Gates Poly Chain® GT®2 Drive Design Manual

Transcription

Drive Design Manual
Workhorse
®
®
Poly Chain GT 2 Belt Drives
Outmuscle and outlast
roller chain in low-speed,
high-torque applications.
THE DRIVING FORCE
IN
POWER TRANSMISSION
NOTE: Click on the desired item or page number to jump directly to that page.
Table Of Contents
Description
Page
Description
Page
Introduction to Poly Chain GT 2 Belt Drives . . . 2-9
Engineering Data. . . . . . . . . . . . . . . . . . . 97
Low Speed Poly Chain GT2 Belt Drive Designs 10-19
Section I — Application Design Considerations
1. Gear Motors/Speed Reducer Drives . . . . 97-98
2. Electric Motor Frame Dimensions . . . . . . . 98
3. Minimum Recommended Sprocket Diameters
for General Purpose Electric Motors. . . . . . 99
4. High Driven Inertia Drives . . . . . . . . . . . 99
5. Air Moving Drives . . . . . . . . . . . . . 99-100
6. Linear Motion Drives . . . . . . . . . . . . . 100
7. High Performance Vehicle Applications . . . 100
8. Belt Drive Registration . . . . . . . . . . 100-101
9. Belt Drive Noise . . . . . . . . . . . . . . . 101
10. Use of Flanged Sprockets . . . . . . . . . . 101
11. Fixed (non-adjustable) Center Distance . 101-102
12. Use of Idlers . . . . . . . . . . . . . . . . . 102
13. Minimum Belt Wrap and Tooth Engagement . 102
14. Adverse Operating Environments . . . . . . 103
®
®
Low Speed Design Calculations . . . . . . . . . . 10-13
Low Speed Drive Selection Procedure . . . . . . 14-18
Low Speed Drive Design Information Sheet . . . . . 19
Poly Chain GT2 Belt Drives
Belt System Specifications . . . . . . . . .
Stock Belt Lengths and Widths . . . . . . .
Standard Belt Drive Selection Procedure . .
Belt Pitch Selection Guide. . . . . . . . . .
NEMA Minimum Sprocket Diameters . . . .
Poly Chain GT2 Service Factors . . . . . .
Poly Chain GT2 Belt Drive Selection Tables
8mm Pitch Belts. . . . . . . . . . . . . .
14mm Pitch Belts . . . . . . . . . . . . .
Poly Chain GT2 Power Rating Tables
8mm Pitch Belts. . . . . . . . . . . . . .
14mm Pitch Belts . . . . . . . . . . . . .
.
.
.
.
.
.
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.
. . 20
. . 21
22-25
. . 25
. . 26
. . 27
. . . 28-41
. . . 42-61
. . . 62-65
. . . 66-70
Poly Chain GT2 Sprocket Specifications
Sprocket Reference Drawings. . . . . . . . . .
8mm Pitch Sprocket Dimension Tables. . . .
14mm Pitch Sprocket Dimension Tables . . .
Sprocket Tolerance Specifications . . . . . . .
Bored-To-Size Sprocket Bore Range Listing . .
Bored-To-Size Sprocket Re-bore Specifications
and Instructions . . . . . . . . . . . . . . . .
.
.
.
.
.
. . 71
72-73
74-77
. . 78
. . 79
. 80-81
Taper-Lock Bushings
Drawings and Dimension Tables . . . . . . . . . . . 82
Stock Bore and Keyseat Information. . . . . . . . 83-84
Taper-Lock Type Sprocket Installation and Removal . 85
Belt Drive Tensioners . . . . . . . . . . . . . . . . 86
Poly Chain GT2 Sprocket Diameter Tables
8mm Pitch Table . . . . . . . . . . . . . . . . . . 87-88
14mm Pitch Table . . . . . . . . . . . . . . . . . 88-89
Short-Length 8mm Pitch Poly Chain GT belt Drives
Introduction . . . . . . . . . . . . . . . . . . .
Belt System Specifications . . . . . . . . . . .
Stock Belt Lengths and Widths . . . . . . . . .
8mm Pitch Belt Drive Selection Tables . . . . .
8mm Pitch Poly Chain GT Power Rating Tables
.
.
.
.
.
. . 90
. . 91
. . 91
92-93
94-96
Section II — Engineering Design Considerations
1. Belt Storage and Handling . . . . . . . . . . 103
2. Center Distance and Belt Length . . . . 103-104
3. Belt Tooth Profiles . . . . . . . . . . . . . . 104
4. Static Conductivity . . . . . . . . . . . . . . 104
5. Sprocket Diameter and Speed . . . . . . . . 105
6. Efficiency . . . . . . . . . . . . . . . . . . . 105
7. Belt Tolerances . . . . . . . . . . . . . . . . 106
8. Belt Installation Tension . . . . . . . . . 106-107
9. Center Distance Allowances
for Installation and Tensioning. . . . . . 107-108
10. Drive Alignment . . . . . . . . . . . . . . . 108
11. Belt Installation . . . . . . . . . . . . . . . . 108
12. Belt Pull Calculations . . . . . . . . . . . . . 109
13. Bearing/Shaft Load Calculations . . . . 109-110
14. Self-Generated Tension . . . . . . . . . . . 110
Technical Data
Troubleshooting . . . . . . . . . . . . . . . . . 111-112
Standard Calculations . . . . . . . . . . . . . . . . 113
Useful Formulas and Calculations . . . . . . . 114-115
Synchronous Belt Product Design Catalogs . . . 116
Standard Synchronous Belt
Product Line Listing . . . . . . . . . . . . 116-130
Belt Drive Application Examples . . . . . . . 131-134
Foreword
Synchronous belts are being used more extensively than ever before in the industry where synchronization of one shaft
speed to another is of primary importance. The Gates Rubber Company has prepared this complete Poly Chain® GT ® Belt
Drive Design Manual to handle these exacting applications. Poly Chain drives also eliminate maintenance and noise problems associated with chain drives and reduce maintenance required on other problem power transmission drives.
Stock Belt Drives are presented in this manual for your convenience. If your drive requirements (Speed, Ratio, Center Distance, Space, Horsepower) are not met, contact your local Gates representative.
Copyright 2000
The Gates Rubber Company
Denver, Colorado 80217
Printed in U.S.A.
Low speed. High speed. And any speed in between.
Gates has your total synchronous belt drive system solution!
Synchronous belt drives are
being used more extensively than
ever for the transfer of power from
one shaft to another, multiplication
of torque, speed reduction or
increase, and synchronization
of shaft operations.
®
®
PowerGrip GT 2
The Racehorse. This is the performance choice for a wide
variety of high-speed (above 500 rpm) drive applications.
PowerGrip GT2 will deliver more power at a lower overall
cost than any other rubber synchronous belt
drive system available.
Gates, the world’s recognized
leader in synchronous belt
technology, continues to meet all
your needs for synchronous belts,
sprockets and bushings across
the broadest range of industry
applications. Choose from a full
line of quality products featuring
leading-edge technologies
that deliver the advantages
you’re looking for:
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Reduced downtime
Reduced over-all drive cost
Reduced drive package size
Increased component life
Increased performance
Energy savings
Reduced acquisition costs
Reduced transaction costs
Increased drive design options
New, improved
synchronous belt lines.
The latest innovations in Gates
synchronous drive systems are two
redesigned and reengineered belt
and sprocket lines. They are the
clear winners in overall cost, drive
selection options and performance
when compared to any other belt
drive products on the market today.
®
®
Poly Chain GT 2
The Workhorse. This is the optimal choice in meeting your
needs for low-speed (below 500 rpm), high-torque drive applications.
The powerful Poly Chain GT2 polyurethane belt drive system will
outperform roller chain drives and any rubber belt drive system
on the market today, delivering the lowest-cost belt drive
system available for low-speed, high-torque applications.
And we can prove it!
1
Taper -Lock®
sprockets & bushings.
Poly Chain GT2 and PowerGrip GT2
belt drive systems feature TaperLock bushings. Advantages of
the Taper-Lock system include:
Made-to-order sprockets.
Gates Made-to-Order (MTO)
Metal Department supports
synchronous MTO sprockets with
90% of Requests For Quote (RFQ)
provided within 48 hours and 84%
of quotes provided within 24
hours. Quoted delivery dates
are met at a 97% rate and most
deliveries are made within four
weeks. Call 800-709-6001
for more information.
Gates Compass® CD-ROM:
selection, maintenance,
and design tool.
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Industry-proven robustness
True running, concentric
Extensive use in
roller chain sprockets
Easy installation and removal
Allows compact
sprocket hub designs
Short length-thru-bore
dimensions
Flush mount with
no protruding hubs
Installs with less axial
sprocket movement than
other bushing systems
The Gates Compass CD-ROM
is a powerful tool offering a
variety of useful information and
features. It makes choosing the
right drive system fast and easy.
Compass contains Design Flex™ II,
Design View™ and Design OHL™ for
invaluable assistance in product
selection, drive design, energy savings calculations, installation and
system cost savings. The CD also
contains eight instructional videos
covering topics such as belt drive
®Taper-Lock is a registered trademark
of the Reliance Electric Corporation.
Design OHL™
▲
2
A partnership commitment.
To ensure that you get the
synchronous drive systems
that are right for your applications,
Gates provides the industry’s
leading support program and the
largest distributor network. You
get local inventory availability and
a single source for all your needs.
You also get access to Gates
Product Application Engineering
Support for unmatched design and
problem-solving expertise in every
aspect of synchronous drive operation. You’re backed by the industry’s largest manufacturer’s field
sales force, voted number one in
a recent Selling Power magazine
survey. Your Gates representatives
are experts in the products they
market and provide a variety of
in-house and on-site training programs. Nobody is as committed
to supporting you as Gates!
It’s obvious!
Gates is your total
synchronous drive solution.
▲ Design Flex II ™
▲ Design View™
troubleshooting, tensioning, safety
and installation. The Compass
CD-ROM is available through
authorized Gates Industrial
Power Transmission Distributors.
With industry-leading technologies,
a complete line of high quality,
top-performing products, and
unmatched customer support,
it’s easy to see that Gates is
the partner to choose in meeting
all your needs for synchronous
belt drive systems.
Poly Chain GT2
New Poly Chain GT2 is Gates most
powerful synchronous belt, ideally
suited for low-speed (below 500
rpm), high torque industrial applications. This improved belt features
a polyurethane body with a robust
aramid fiber tensile cord and new
nylon tooth facing—improvements
that enable increased load-carrying
capacity. Size for size, space for
space, Poly Chain GT2 transmits
up to 30 percent more power than
its predecessor. It also permits the
design of more compact, lighter
weight drives that deliver more
power in less space than any
other belt drive system available.
Poly Chain GT2 is the result of
innovative state-of-the-art design
and engineering. The body and
teeth are made of a durable polyurethane compound, specially
blended for uncompromising
adhesion to the tensile cords and
heavy nylon tooth facing, allowing
for increased tooth shear strength
and excellent flex life. The result is
the toughest belt on the market
by far, virtually immune to abrasion
and chemical attack.
Poly Chain GT2 performs flawlessly, even under the harshest
operating conditions.
The aramid fiber tensile cords constitute the belt’s muscle. The cord
provides exceptional flex fatigue life
and its high impact strength makes
the belt resistant to shock and
surge loading. Poly Chain GT2 drives
dramatically reduce maintenance
costs, expensive production downtime and noise problems associated
with the metal-to-metal contact
of roller chain drives.
The nylon fabric covering the teeth
is highly resistant to oil, chemicals,
pollutants, corrosion and abrasion,
while providing excellent tooth shear
strength and durability. Poly Chain
GT2 belts are exceptionally durable
and remain fully operational under
extreme temperatures ranging
from –65°F up to +185°F
(-54°C to +85°C).
3
Patented tooth facing delivers
more strength, greater tooth
shear strength, reduced friction and
eliminates the need for lubrication.
Poly Chain GT2 belt drives are
virtually maintenance free.
Taper-Lock®
sprockets & bushings.
Polyurethane compound resists oils, chemicals,
pollutants and abrasion. It’s tough
and performs in temperatures ranging
from –65°F to +185°F.
Poly Chain GT2 belt drive systems
feature a new line of sprockets
that have been redesigned to carry
the new increased belt power ratings. These new sprockets utilize
the Taper-Lock bushing system
that has been tested and proven
in industry for many years. This
allows easy sprocket installation
and removal and keeps the hubs
narrow so the length-thru-bore
dimension is less than ever before.
Now, Poly Chain GT2 sprockets will
fit on those applications with short
shafts, with room to spare.
Greater flexibility in design.
In addition, the left-justified hub
design allows shaft mounting close
to outboard bearings. This keeps
the center of load dimension small,
so overhung load values are as
low as possible—lower than any
competitive belt drive system.
How do you calculate
the cost of downtime?
Poly Chain GT2 is the ideal
candidate for low-speed and speed
reducer applications. Its high load
carrying capacity is unmatched by
any competitive belt drive system,
allowing drive designs in widths
narrower than ever before,
approaching roller chain
drive systems.
Poly Chain GT2 sprocket/bushing
systems use less space than conventional sprockets and sheaves.
In comparison with most competitive drives (roller chain or rubber),
Poly Chain GT2 belt drives are as
little as one-half the width and 50
percent lighter. Yet they can deliver
over five times more horsepower
than standard rubber synchronous
systems in the same space.
Savings like these in space and
weight allow for a wide latitude
in design flexibility.
The “normal” downtime costs
and lost productivity resulting
from maintenance and chain
replacement could add up to
Aramid fiber tensile
cords provide extraordinary
load carrying capability. For the same
weight, they have a higher tensile
modulus than steel for incredible
strength and virtually zero elongation.
Exceptional flex fatigue characteristics
combined with the ability to absorb
shock loads make Poly Chain GT2
the ideal drive system choice for
low-speed high-torque applications.
hundreds—if not thousands—of
dollars per drive per year. You have
no choice. If you use roller chain
drives, you must maintain them or
they will break down. Consequently,
regular scheduled maintenance on
your production equipment must
be accomplished to maintain
these roller chain drives, often
resulting in extensive downtime.
Elimination of this downtime
would clearly result in increased
production output.
30
10
More horsepower in
less space for less cost.
Poly Chain GT2 Belt – 14mm Pitch
Poly Chain GT – 14mm Pitch
#80 Single Roller Chain – 1" Pitch
Horsepower
From low-speed fractional horsepower drives to more than 1,200
horsepower, Poly Chain GT2 drives
are unsurpassed in transmitting
positive power over a wide range
of loads, while withstanding power
surges and shock loading. Think
of all the places you could use
a drive system like that!
#60 Single Roller Chain – 3/4" Pitch
#40 Double Roller Chain – 1/2" Pitch
1
10
rpm
100
Horsepower Rating Comparison
(Width is approximately 1” for all transmission media)
4
500
Poly Chain GT2
advantages over roller chain:
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Long, dependable life
Reduced downtime
Virtually maintenance free
No retensioning
Quiet
Minimal vibration
due to chordal action
Virtually no elongation
Clean running system
No expensive oil baths
No lubrication
Resistant to chemicals
and contaminants
Excellent shock load resistance
Save big with
Poly Chain GT2 drives:
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No “hidden costs”
in lost productivity
No “hidden costs”
of ongoing maintenance
Poly Chain GT2 drives
reduce overall costs and can
pay for themselves
in less than one year
Poly Chain GT2 drives will
often outlast roller chain 3 to 1
The hidden costs
of roller chain:
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Expensive drive enclosures
Lubrication systems
Lubricant cost and disposal
Broken chain replacement
Worn sprocket replacement
Maintenance downtime
Safety issues
Environmental noise concerns
5
Poly Chain GT2 Drives are guaranteed to outperform and outmuscle
roller chain and high-performance rubber belt synchronous systems —
at a lower overall service lifetime cost per drive. And here’s proof!
■ Poly Chain
■ Poly Chain
2.5
®
®
GT®2
GT®
■ Dayco
®
2.0
1.91
1.82
1.5
1.0
1.0
0.5
3
5
7.5
10
15
20
Avg.
Cost Ratio
Cost Ratio
1.5
1.84 1.88
1.75
1.66
1.60 1.62
2
®
2.09
1.98
1.88 1.84
1
■ HTD
Eagle Pd™
2.27
2.08
2.0
0.0
®
2.5
2.36 2.34
2.09
■ Goodyear
Panther®
1.72
0.5
0.0
Motor Horsepower
1
2
3
5
7.5
10
15
20
Avg.
Motor Horsepower
Cost Ratio
Cost Ratio
Poly Chain GT2/Roller Chain
(100 rpm Shaft Speed)
Poly Chain GT2/Roller Chain
(200 rpm Shaft Speed)
0.40
0.15
100
0.35
80
0.12
0.09
0.06
0.03
0.00
22
28
30
32
34
36
38
40
48
56
0.25
60
0.20
Drive System Cost
Horsepower – Per mm Width
Horsepower – Per mm Width
0.30
40
0.15
0.10
20
0.05
0.00
28
30
32
34
36
38
40
48
56
0
60
Sprocket Grooves
Sprocket Grooves
1
2
3
5
7.5
10
15
20
Motor Horsepower
Horsepower Per mm Belt Width
Horsepower Per mm Belt Width
System Cost For Motor Horsepowers
Light Package Conveyor Example
(8mm Pitch, 100 rpm Reducer Output
Service Factor Added)
Light Package Conveyor Example
(14mm Pitch, 100 rpm Reducer Output
Service Factor Added)
(1:1 Speed Ratio, 103 rpm Reducer Output)
3.48
3.5
120
11.19
12
3.02
2.83
3.0
100
10
8.71
9.13
2.5
8
2.0
Horsepower Ratings
60
40
20
0
1
2
3
5
7.5
10
15
Motor Horsepower
1.5
Horsepower Ratings
Calculated Overhung Load
80
1.35
1.0
0.5
0.0
H.T.D.
Panther
Eagle
PCGT2
Belt Drive Systems
6
4.45
4
2
0
H.T.D.
Eagle
Panther
PCGT2
Belt Drive Systems
Overhung Load Comparison
Published Horsepower Rating
Published Horsepower Rating
Poly Chain GT2 vs Eagle Pd and Panther
(All drives designed with
comparable diameter sprockets)
Per Inch of Width
(8mm Sprocket, 56 Groove,
100 rpm Reducer Output)
Per Inch of Width
(14mm Sprocket, 56 Groove,
100 rpm Reducer Output)
6
* Because Poly Chain GT2 belts have the highest capacity,
a narrow belt drive can be used, meaning that the center
of the belt load is closer to the reducer bearing, resulting
in less bearing load.
400
Poly Chain GT2
350
300
Poly Chain GT
250
Poly Chain GT
200
Goodyear Eagle
150
Poly Chain GT
% Belt Life
100
Dayco Panther
50
0
8mm
14mm
8mm
14mm
8mm
14mm
Belt Pitch
Gates Reliability Test 8TF-6 & 14TF-1
Gates Reliability Tests 8TF-17 & 14TF-16
Gates Reliability Tests 8TF-6 & 14TF-20
Life Performance Indexes
Poly Chain GT vs Panther, Eagle and Poly Chain GT2
Belt Test
Descriptions
Test ID
8TF-6
8TF-17
14TF-1
14TF-16
14TF-20
Dr
Pitch
8mm
8mm
14mm
14mm
14mm
Competitive Comparisons
Speed
2000 rpm
2000 rpm
1750 rpm
1750 rpm
1750 rpm
Dn
Sprockets
24T/24T
24T/24T
32T/32T
32T/32T
32T/32T
Load
High Torque
High Torque
High Torque
High Torque
High Torque
Note: All competitive belt tests were conducted in a laboratory environment under identical operating conditions
8mm Pitch Product
Line Comparison
Gates
Poly Chain GT2
Goodyear
Eagle Pd
Dayco
RPP Panther
Sprocket Diameters
26
26
20
Sprocket Selections
103
52
80
Center Distance Range
5.51 – 84.72
5.51 – 44.09
3.78 – 83.15
Maximum Speed Ratio
10.18:1
11.20:1
8.73:1
Belt Length Selections
20
14
26
640 – 4480mm
640 – 2400mm
480 – 4400mm
12-21-36-62
16-32
12-22-35-60
22,000+
7,000+
16,500+
Gates
Poly Chain GT2
Goodyear
Eagle Pd
Dayco
RPP Panther
Sprocket Diameters
32
21
23
Sprocket Selections
160
84
115
Center Distance Range
8.54 – 79.09
8.54 – 47.40
7.99 – 89.84
Maximum Speed Ratio
8.00:1
6.00:1
7.71:1
Belt Length Selections
19
14
18
Belt Length Range
994 – 4410mm
994 – 2800mm
966 – 4956mm
Belt Width Selections
20-37-68-90-125
35-53-70-105
20-42-65-90-120
36,000+
8,000+
17,500+
Belt Length Range
Belt Width Selections
Total Drive Combinations
14mm Pitch Product
Line Comparison
Total Drive Combinations
® ™ Eagle PD is a trademark of The Goodyear Tire & Rubber
Company. Dayco and Panther are registered trademarks
and RPP is a trademark of Dayco Products Inc.
7
The bottom line:
Poly Chain GT2 vs. Roller
Chain Savings Calculator
Compared to other drive system
alternatives to roller chain available today, Poly Chain GT2 drives
offer you:
●
●
●
●
This sample calculator below illustrates the dramatic cost savings
of a Poly Chain GT2 drive system
compared to a roller chain system.
The most compact belt
drive system available today
Lowest cost drive
system at low speed
Lowest overhung load generated
on speed reducer shafts
Longest life, width for width
Make the switch
to Poly Chain GT2
Poly Chain GT2 drives tested in
a variety of applications lasted
longer and required less maintenance than the roller chain or rubber belt drives they replaced. The
following industries are ideal for
Poly Chain GT2 drive systems:
That’s why Gates is The Driving
Force In Power Transmission!
Lumber, Pulp & Paper
Conveyors, repulpers,
sentry screens, effluent systems,
presses, waxers, chippers,
debarkers, slashers,
chip ‘n saws, edgers,
roll grinders, screw conveyors,
flotation cells, cut-off saws,
hourglass rolls, dryers, agitators,
calendars, pumps, winders
Packaging
Box makers, carton sealers,
case palletizers, and live roll,
apron, belt, chain and
screw conveyors
Food Processing
ANNUAL COSTS
intain Roller Chain:
Yearly Costs To Ma
– Chain/Belt
Replacement cost
$
33.96
$
13.00
$
28.58
$
13.00
$
6.50
$
?
$
100.00
$
?
$
?
Labor
Replacement cost
– Sprockets
Labor
Lubrication cost
– Labor
Disposal
e
Production Downtim
ints
Employee Compla
tion)
(noise/lost produc
Safety costs
(lube on floor, etc.)
in System:
to Mainta
Annual Total Cost
Annual Total Cost
of New System:
:
to Maintain System
Annual Total Cost
GT2
in
Cha
y
Pol
k:
Pay Bac
rs
tems in Three Yea
t Three Years:
ings in Dollars - Firs
Cost of Systems in
Five Years
– First
Savings in Dollars
Five Years:
*
$
$
$
$
695.33
$
508.99
$
1,085.41
$
819.07
Sav
*
$
$
$
$
0.61
Cost of Sys
*
$
305.25
$
Pumps, bucket elevators,
belt conveyors, icing machines,
elongators, dough mixers,
cookers, mills, bottling machines,
meat grinders, hog dehairers
*
$
195.04
$
186.34
$
110.21
$
System
Cost of New Drive
Unit
Poly Chain® GT2®
Roller Chain
$
0.00
$
186.34
Years
$
Aluminum/Steel
Bucket elevators, shot blasters,
conveyor drives, scrap cutters,
sand seals, drag-out machines,
polishers, cooling chambers,
muffler furnaces,
mandrel stripping rods,
spinner cars, gray iron foundries,
sand conveyors,
bucket elevators, grinders
Petrochemical Industries
Air coolers, chlorine compressors,
processing, centrifuges,
dryers, compressors, pumps
186.34
Sand, Gravel & Concrete
Per Drive
$
266.34
Feeder drives, conveyor drives,
elevators, screw conveyors
Per Drive
rage and that
per year on the ave
ry 3 years;
are replaced once
laced only once eve
t roller chain drives
rep
tha
be
es
to
um
e
ass
hav
t
ly) should
*NOTE: Workshee
ponent cost.
y Chain GT2 belt (on
com
Pol
the
ed
of
ign
1/3
des
ly
at
a proper
calculated
lacement costs are
hence the yearly rep
Glass Manufacturing/Bottles
Conveyors, crushers, grinders,
carton sealers, case palletizers
And more!
Visit www.gates.com/sync
for an online version
Gates Poly Chain GT2 belts are protected by U.S.
patents 4,838,843, 4,605,389, 4,652,252,
5,971,879 and U.S. and foreign patents pending.
8
SAFETY POLICY
WARNING! Be Safe! Gates belt drive systems are very reliable when used
safely and within Gates application recommendations. However, there are
specific USES THAT MUST BE AVOIDED due to the risk of serious injury or
death. These prohibited misuses include:
Primary In Flight Aircraft Systems
Do not use Gates belts, pulleys or sprockets on aircraft, propeller or rotor
drive systems or in-flight accessory drives. Gates belt drive systems are not
intended for aircraft use.
Lift Systems
Do not use Gates belts, pulleys or sprockets in applications that depend
solely upon the belt to raise/lower, support or sustain a mass without an
independent safety backup system. Gates belt drive systems are not
intended for use in applications requiring special “Lift” or “Proof” type chains
with minimum tensile strength or certified/test tensile strength requirements.
Braking Systems
Do not use Gates belts, pulleys or sprockets in applications that depend
solely upon the belt to slow or stop a mass, or to act as a brake without an
independent safety backup system. Gates belt drive systems are not
intended to function as a braking device in “emergency stop” systems.
R
The Driving Force in Power Transmission.
9
Poly Chain® GT®2 Low-Speed Design Load Calculations
For use when designing Poly Chain GT2 belt drives for gear
reducer output shafts and general roller chain conversions.
When designing Poly Chain GT2 belt drives to be used in
low-speed applications (generally 500 rpm and less), traditional
drive design procedures may yield drives with greater-than-needed
capacity. These design load calculations are intended primarily for
applications on the output side of gear reducers, and will yield Poly
Chain GT2 belt drives competitive in both cost and performance
with roller chain and superior to other belt drives.
A recent power transmission industry publication estimated that
half of all U.S. motors operate at less than 60 percent of their rated
load and one third operate at below 50 percent of their rated load.
Significant power losses can also occur in speed reducers, further
reducing the actual torque loads carried by belt drives.
In order to prevent over sizing belt drives for these low speed applications, the design should be based upon the actual system running load. Because the actual running load may or may not be
known, the following three approaches are recommended to assist
the designer in determining the appropriate design load:
I. Actual Operating Loads Known
In those cases where the actual operating load is known, design the
belt drive for the actual operating load rather than for a load based
upon the motor name plate. Use Formula 1 to calculate the proper
drive design load based upon motor load (name plate or measured)
when the belt drive will be installed on the reducer output shaft.
Design Load
Formula 1
Design Load = (Motor Load ) × (Service Factor )
× (%Reducer Efficiency 100)
Motor Load: From user/OEM
Service Factor: From Table 1
% Efficiency: From Speed Reducer Catalog (also refer to
the Reference Data Section on page 12)
Table 1—Service Factors for Low-Speed Roller Chain Drive Conversions
For Drive Selections With Shaft Speeds Less Than 500 rpm
Typical driveRs are electric motors, hydraulic motors, or internal
combustion engines with hydraulic couplings/torque converters.
DriveN Machine
Intermittent
Service
Normal
Service
Continuous
Service
3-5 Hours Daily
8-10 Hours Daily
16-24 Hours Daily
Uniform Load:
Agitators & Mixers: liquid and semi-liquid
Conveyors: light package, oven, ore, sand, salt
Food Equipment: bottling machinery, kettles, cookers, food handling machinery
Line shafts: light or normal service
Paper Industry: agitators, bleachers, calendars, dryer machinery
Printing Machinery: cutters, rotary, embossing & flatbed presses, linotype, folders
1.0
1.2
1.3
Moderate Shock Load:
Agitator Mixers: dough, heavy syrups
Brick & Clay Machinery: auger, brick machines
Conveyors: apron, bucket, pan, elevator
Cranes & Hoists: hoists, elevators
Line Shafts: moderate, heavy service
Paper Industry: yankee dryer, winder drums
Printing Machinery: magazine & newspaper printing presses
Rubber & Plastics Machinery: calendars, rolls, tubers, extruders
1.3
1.4
1.5
Heavy Shock Loads:
Brick & Clay Machinery: mixers, pug mills, rolls
Conveyors: screw, flight
Crushing Machinery: ball mills, jaw crushers, roll crushers
Mills: rotary, ball, pebble, rod, tube
Mixers: concrete
Rubber & Plastics Machinery: mixers, sheeters
1.5
1.6
1.7
Select a driveN load category whose characteristics most closely represent
those of the actual equipment
Additional Guidelines
There are many driveN machines using, or potentially designed to use, roller chain drive systems. When converting these to Poly Chain® GT®2 drives, consider the following additional guidelines.
• Do not overlook the torque multiplying effect of belt drives and speed reducers when calculating with torque loads.
• Engineering judgment should be used in determining a design load for non-standard motors with high starting loads (NEMA C, NEMA D,
Direct Current, etc.).
• See the Reference Data Section for guidance in calculating speed reducer efficiency.
• For guidance in calculating speed reducer efficiency, refer to Speed Reducer Efficiency on Page 12.
10
R
Poly Chain® GT®2 Low-Speed Design Load Calculations—continued
II. Actual Operating Loads Unknown — With Measurements
When the actual system running load is unknown, it must be estimated. This can be done with reasonable accuracy by measuring
the average electrical amperage draw from the motor while under
load, and calculating a motor horsepower output. Speed reducer
efficiency can also be calculated and applied as well.
Three Phase A.C. Motors
Formula 4
Horsepower * =
Amps: as measured (average of 3 phases)
Volts: as measured
Eff: % Eff/100 (from Motor Catalog or Motor Nameplate)
Power Factor: as measured or from Motor Catalog
Use Formulas 2-4 for the most accurate results if all of the needed
formula values are available.
Because values for motor efficiency and power factor may not be
readily available, a common industry accepted practice is to proportion the motor name plate horsepower rating with the motor name
plate amperage rating and actual measured amperage value. Use
Formula 5 for a reasonable estimate of actual motor horsepower
load.
Note: Refer to Power Factor on page 12 for general
power factor and efficiency values.
Alternative Approach
Formula 5
D.C. Motors
Horsepower =
Formula 2
Horsepower * =
(Nameplate hp)(Measured Amps)
(Nameplate Amps)
Nameplate hp: maximum rated motor horsepower
(Motor Nameplate or Motor Catalog)
Measured Amps: as measured (if 3 phase; average of
3 phases)
Nameplate Amps: maximum rated motor amps (Motor
Nameplate or Motor Catalog)
( Amps ) × (Volts ) × (Eff )
746
Amps: as measured
Volts: as measured
Now with a good estimate of the actual motor horsepower load, use
Formula 6 to calculate the proper drive design load (when the belt
drive will be installed on the reducer output shaft).
Single Phase A.C. Motor
Formula 3
Horsepower * =
173
. × ( Amps ) × (Volts ) × (Eff ) × (PF )
746
( Amps ) × (Volts ) × (Eff ) × (PF )
746
Formula 6
Design Load = (Estimated Motor Load ) × (Service Factor )
Amps: as measured
Volts: as measured
Power Factor: as measured or from Motor Catalog
×
% Reducer Efficiency
100
Estimated Motor Load: From Formulas 2-5
Service Factor: From Table 1
% Efficiency: from Speed Reducer Catalog (also refer to
Speed Reducer Efficiency on page 12.
*With an estimate of actual motor load, and the belt drive connected directly to a speed reducer output shaft, use Formula 1 to calculate the drive
design load.
III. Actual Operating Loads Unknown — Without Measurements
It is not always possible to determine actual motor operating loads,
as it may not be possible to take amperage draw measurements
from the motor. In those cases, the following guidelines should be
used with caution, as they may not yield successful results in every
case. They should, however, yield at least comparable, if not improved, service compared to the old roller chain drive.
The procedures which follow in Table 2 should yield at least comparable, if not improved, service compared to the old roller chain drive.
Table 2
Situation
Conclusion
Recommendation
Properly lubricated. Provides more than four
months of continuous service
System is either properly designed or lightly
loaded.
Base belt drive design load on the roller chain
drive horsepower rating.
Properly lubricated. Provides less than four
months of continuous service.
System may have less than adequate load
capacity.
Belt drive design load based on roller chain drive
horsepower rating may result in a poorly performing system. Exercise good engineering judgment.
Unlubricated. Provides more than four months System is lightly loaded.*
continuous service.
Base belt drive design load on roller chain drive
horsepower rating.
Unlubricated. Provides less than four months
continuous service.
Base belt drive design load on roller chain power
rating but exercise good engineering judgment.
It is difficult to conclude whether the system has
been designed with adequate load capacity.*
*Unlubricated roller chain drives do not typically provide more than three to four months of service regardless of design capacity.
R
11
In those cases where the belt drive design load is based upon the
power rating of the existing roller chain drive, use Formula 7 along
with good engineering judgment to calculate the proper drive design load.
Q=
rpm
Q = torque (lb-in)
hp = horsepower
rpm = shaft revolutions/min.
Formula 7
Design Load = (Roller Chain Power Rating )
(hp ) × 63025
Reducer efficiency is then calculated as follows:
× (Service Factor )
Reducer Efficiency =
Roller Chain Power Rating: from Roller Chain
Manufacturer’s Catalog
Service Factor: from Table 1
Output hp or Q
Input hp or Q
A general comparison of speed reducer efficiency is included in
Table 3.
Drive Selection Procedure
Having used one of the previous three approaches to determine a
belt drive design horsepower load, proceed to step 2 of the Belt
Drive Selection Procedure on page 15.
Motor Data
Motor efficiency and power factor data may not be readily available,
Actual values vary and are motor dependent. If catalog data are not
available, typical values are as follows:
Reference Information
Power Factor
Standard Motor: 0.80 typical (range from 0.55 to 0.90)
Speed Reducer Efficiency
If the efficiency of a speed reducer is not published, it can be calculated indirectly from the catalog data. Speed reducer manufacturers generally publish rated input horsepower and rated output
torque for each speed reducer unit in their product line. In order to
calculate speed reducer efficiency, either the rated output torque
must be converted to output horsepower or the rated input horsepower must be converted to input torque. The torque/horsepower
conversion formulas are as follows:
High Efficiency Motor: 0.85 typical (range from 0.73 to
0.88)
Efficiency
Standard Motor: 80% typical (range from 70% to 87%)
High Efficiency Motor: 88% typical (range from 84% to
93%)
Belt Tensioning
Q × (rpm )
hp =
63025
Adequate belt installation tension is critical in preventing belt
ratcheting under peak motor starting loads. To calculate proper belt
installation tension values for Poly Chain GT2 belts, follow the procedures starting on page 106.
hp = horsepower
Q = torque (lb-in)
rpm = shaft revolutions/min
Table 3
Reducer Type
Ratio Range
Reduction
Approx. Efficiency, (%)
Straight Bevel Reducer
1:1 - 4:1
Single
97.0%
Spiral Bevel Reducer
Helical Reducer
Planetary Reducer
Cycloidal Reducer
Worm Gear Reducer
1:1 - 5:1
Single
97.0%
1.2:1 - 6:1
Single
97.0%
to 30:1
Double
94.1%
to 200:1
Triple
91.3%
3.5:1 - 6:1
Single
97.5%
to 30:1
Double
95.1%
to 200:1
Triple
92.7%
to 1800:1
Quadruple
90.4%
6:1 - 119:1
Single
92.5%
to 7,500:1
Double
85.6%
to 658,000:1
Triple
79.1%
5:1 - 75:1
Single
45%-94%
to 6,000:1
Double
28%-65%
Note: Speed ratio ranges and efficiency values are approximate and vary with each manufacturer.
12
R
Copy and use this worksheet to estimate actual belt drive operating loads
based upon the Low-Speed Drive Design Procedure
Drive Design Load Worksheet for Low-Speed Poly Chain GT2 Drives
To
Find
ê
Known Values
Amps
Volts
Motor
%Eff/100
Power
Factor
hp Load
Motor
Amps
Alternating Current
Motor
rpm
Reducer
Ratio
Reducer
%Eff/100
Motor
Torque
Direct Current
Single Phase
Three Phase
(hp )(746)
(V )(Eff )
(hp )(746)
(V )(Eff )(PF )
(hp )(746)
. )(V )(Eff )(PF )
(173
(Amp )(V )(Eff ) (Amp )(V )(Eff )(PF ) (1.73 )(Amp )(V )(Eff )(PF )
Motor
hp
746
746
746
(hpLoad )(63025)
(Motor rpm)
Motor
Torque
(lb-in)
(Motor Torque )(Reducer Speed Ratio )(Reducer Efficiency)
Reducer
Output
Torque
(hp Load )(Reducer Speed Ratio )(Reducer Efficiency)(63025 )
(Motor rpm)
Reducer
Output
Torque
Notes:
1. Amperage measurements should be made under normal operating conditions, or recorded continuously as a function of time.
2. In three phase systems, the formula amperage value is determined by averaging the three individual phase measurements together.
See Low-Speed Drive Design Information Sheet on page 19
for assistance in collecting drive design information.
R
13
Low-Speed Poly Chain® GT®2 Belt Drive Selection Procedure
For drive selections with shaft speeds less than 500 rpm
Selection of a Stock Poly Chain GT2 belt drive system involves
these eight steps:
1. Calculate The Design Horsepower
2. Select The Belt Pitch
3. Select The Sprockets and Belt Length
4. Select The Proper Belt Width
5. Check and Specify Stock Drive Components
6. Installation And Take-up
7. Calculate Belt Tensioning Requirements
8. Verify Speed Reducer Overhung Load
Nameplate hp × Average Measured Amps
Nameplate Amps
5 hp × 4.2 amps
=
7.0 amps
Motor Load = 3.00hp
Motor Load =
Procedure
B. The proper Low-Speed Service Factor is selected from
Table 1 – Service Factors For Low-Speed Roller Chain
Drive Conversions on page 10. The selection is based on the
category of machinery being driven and the number of service
hours per day.
Sample Drive Selection Problem
Example
A blank Low-Speed Drive Design Information Sheet can be found
on page 19. This form provides a convenient method for collecting
data to properly design or convert to a Poly Chain GT2 belt drive.
An Ore Conveyor is found in the Uniform Load drive
group. Reading across to the right, the column heading
for 16-24 hours daily service shows that a 1.3 Service
Factor is recommended.
In this example, an ore conveyor is powered by an electric motor
directly connected to a speed reducer. A Poly Chain GT2 belt drive
is needed to transmit power from the speed reducer output shaft to
the conveyor shaft. The motor is a 5 horsepower, 1750 rpm normal
torque AC motor. The speed reducer is a worm gear type unit with a
50 to 1 speed ratio. The ore conveyor is to be driven at 20 ± 5% rpm
and operates 24 hours per day 7 days a week. The center distance
between shafts is 50.0 inches, but can be altered ± 3.0 inches, if
necessary. The speed reducer output shaft has a 1.500 inch diameter and the conveyor shaft has a 2.000 inch diameter.
Example - Speed Reducer Efficiency Calculation
Speed Reducer Rated Input Load = 6.5 hp
Speed Reducer Rated Output Torque = 6210 lb -in.
Step 1 Calculate The Design Horsepower
Speed Reducer Rated Output Speed = 35 rpm
The Design Horsepower should be calculated as follows:
Design Horsepower = (Motor Load )
× (Low -Speed Service Factor ) × (Reducer Efficiency )
Procedure
A. The motor load can be determined by several methods as
explained in the Low-Speed Drive Load Calculations section
on pages 10-13. The method used for determining motor load
will depend on how much information is available on the application. A worksheet is provided on page 13 to help choose
which method is most appropriate given the information
known.
Example
This example demonstrates the Proportioned Amperage
Rating approach described in Formula 5 on page 11.
Motor = 5.00 hp (nameplate rating)
Rated Output hp
(Rated OutputTorque ) × (OutputSpeed )
=
63025
(6210 lb -in ) × ( 35rpm )
=
63025
Rated Output hp = 3.4
Rated Output Power
Rated Input Power
3.4hp
=
6.5hp
Reducer Efficiency = 0.53 or 53%
Procedure
D. The Design Horsepower can now be determined by multiplying
these three values together.
Nameplate Amps = 7.0
Example - Design Horsepower Calculation
Measured Amps: Phase 1 = 4.1
Phase 2 = 4.4
Phase 3 = 4.2
Motor Load = 3.00 hp
Phase 1+ Phase 2 + Phase 3
3
4.1 amps + 4.4 amps + 4.2 amps
=
3
Average Measured Amps = 4.2 amps
Design Horsepower = (Motor Load )
× (Low − Speed Service Factor )
× (Reducer Efficiency / 100)
Low -Speed Service Factor = 1.3
Reducer Efficiency = 53%
Average Measured Amps =
14
Procedure
C. The Reducer Efficiency is available from the speed reducer
name plate or manufacturers’ catalogs. Often the speed reducer efficiency is not provided directly in manufacturer’s catalog. In such cases the reducer efficiency must be calculated as
described on page 12.
R
Design Horsepower = 2.07 hp
Low-Speed Poly Chain® GT®2 Belt Drive Design Procedure – continued
Step 2 Select The Belt Pitch
Procedure
Using the Design Horsepower and the output speed of the speed
reducer, select the belt pitch from the Belt Pitch Selection Guide
Chart on page 25.
tion, the 49.56 inch value is the closest to the 50.00 inch
target. So, the 32 groove DriveR sprocket, 56 groove
DriveN sprocket, and 14MGT-3136 (224 teeth) belt combination is selected. Also note that the Belt Length Correction Factor is 1.12 with a center distance of 49.56
inches.
Example
Step 4 Select The Proper Belt Width
Reducer Output Speed = 35 rpm
Procedure
Locate 35 rpm on the “RPM of Faster Shaft” scale on the
left side of the chart and move over to where the 2.07 Design Horsepower line intersects. The intersection falls
within the 14mm pitch section.
Horsepower Rating Tables are located on pages 62-70 for
standard belt pitches and stock belt widths. The base horsepower rating is given in the upper table as a function of the speed
(rpm) of the faster shaft and diameter of the small sprocket. The
speed of the faster shaft is located in the left hand column. Across
the top are various stock sprocket sizes. The base horsepower rating of a given sprocket, at a specific speed, is the point at which the
“rpm” row and the “sprocket size” column intersect.
Step 3 Select The Sprockets and Belt Length
Procedure
A. Determine The Belt Drive Speed Ratio: The speed ratio can be
calculated by dividing the speed (rpm) of the faster shaft by the
speed (rpm) of the slower shaft.
Example
Reducer Output Speed = 35 rpm
Ore Conveyor Speed = 20 rpm
rpm of faster shaft 35
Speed Ratio =
=
= 1.75
rpm of slower shaft 20
B. Select The Sprocket Combination and Belt Length: Referring to the Stock Drive Selection Tables on pages 28-61, find
the proper set of tables for the belt pitch (8mm or 14mm) found
in Step 2. Looking down the speed ratio column, find the value
which most closely matches the belt drive speed ratio required.
Reading across the selected speed ratio line, find the stock
DriveR and DriveN sprocket combination available. Reading
further across, locate the belt drive center distance which most
closely matches the target center distance specified. The belt
sizes are listed across the top of the table for each corresponding center distance.
Multiple sprocket combinations will often be available for a
given speed ratio. In such cases, selection of the proper drive
combination will depend on the center distance required, minimum or maximum required sprocket diameters and speed reducer overhung load requirements.
After selecting possible sprocket combinations and center distances, record the belt length (top of column) and the length
factor (bottom of column).
Example
Belt pitch = 14mm
Belt Drive Speed Ratio = 1.750
Center Distance = 50.00 ± 3.00 in. (from the problem
statement)
Refer to the 14mm Pitch Stock Drive Selection Tables on
pages 42-61. Reading down the Speed Ratio Column locate 1.750 on page 52. In this case, there are three different drive combinations available for a 1.750 Speed Ratio.
Checking the center distance values for each combina-
R
This basic horsepower rating must be corrected for speed down
speed ratios, and for the belt length selected. The following formula
should be used to calculate the total drive horsepower rating:
Rated Drive Horsepower = [Rated Base Horsepower
+ Added Horsepower for Speed Ratio]
×(Belt Length Correction Factor)
Referring to the Speed Ratio Add-On Factor Table, select a value
based upon the drive operating speed and the speed ratio. This
value should be added to the basic horsepower rating. Multiply the
corrected rating by the applicable Belt Length Correction Factor determined in Step 3B or from the Belt Length Correction Factor Table. The corrected horsepower rating must equal or exceed design
horsepower.
Where there are several choices, space limitations may control the
selection. In addition, the following guidelines should be considered:
1. Larger sprockets result in reduced belt width.
2. Larger sprockets yield longer drive service life.
3. Avoid drives where the belt width exceeds the smaller
sprocket diameter.
4. Avoid drives where center distance is greater than 8 times
the diameter of the smaller sprocket. Refer to Engineering
Section I-10 on page 101 for additional details.
Example
Referring to the 14mm pitch Horsepower Rating Table for
20mm Wide belts on page 66. Read down the left hand
column for “RPM of Faster Shaft” and locate 35 rpm.
Read the sprocket sizes listed across the top of the table
and locate the 32 groove, 5.614 inch P.D. column. Read
across the “RPM” row and down the sprocket size column
until the two intersect at a Rated Base Horsepower of
1.84 HP.
Next, referencing the Speed Ratio Add-On Correction Table, find the listing for a 1.750 speed ratio. An add-on
factor of 0.07 hp is listed. Then, referencing the Belt
Length Correction Factor Table, find the listing for a
14MGT-3136 belt. A correction factor of 1.12 is listed.
15
Low-Speed Poly Chain® GT®2 Belt Drive Design Procedure – continued
Calculate the Corrected Horsepower Rating:
Rated Drive Horsepower =
[Rated Base Horsepower + Added HPforSpeed Ratio] ×
. )
. hp + 0.07hp] × (112
(Belt LengthCorrection Factor ) = [184
Rated Drive Horsepower = 2.14 hp
The Corrected Horsepower Rating of 2.14 hp exceeds the
Design Horsepower target of 2.07 hp. So, a belt width of
20mm is acceptable.
Step 5 Check and Specify Stock Drive Components
Procedure
A. Check the sprockets selected against any special design
requirements using the dimensions provided in the Sprocket
Specifications Tables on pages 72-77. Use flange diameters
when checking against maximum diameter requirements.
B. Determine the bushing size required for each sprocket
and check bore sizes by using the Sprocket Specification Tables. From the Stock Bushing tables on pages 82-84, check the
bore range and keyway dimensions against the design requirements.
Example
Also from the sprocket data on page 74 we note that the
14MX-32S-20 sprocket requires a 2012 bushing and
the 14MX-56S-20 sprocket requires a 3525 bushing.
On page 82 in the bushing data table, a 2012 bushing
has a bore range of 1/2 to 2-1/8 inches, which includes
the 1-1/2 inch bore required for the driveR shaft. The
3525 bushing has a bore range from 1-3/16 to 3-15/16
inches, which includes the 2 inch bore required for the
driveN shaft.
C. Specify stock drive components using proper
designations.
Example
As can be seen in the Sprocket Specifications Table on
page 74, both of the sprockets are flanged. Therefore, an
additional allowance will be needed for installation over
flanged sprockets. The total installation and tensioning allowances, are shown below.
Installation Allowance = 0.16 in. +1.97 in. = 2.13 in.
Tensioning Allowance = 0.05 in.
Subtracting this from the nominal center distance value
gives a minimum center distance necessary for belt installation of (49.56 inch - 2.13 inch) = 47.43 inches. From
the problem statement, the center distance can be reduced down to 47.0 in. if needed. So, there is sufficient
center distance adjustment to easily install the belt.
Step 7 Calculate Belt Tensioning Requirements
Procedure
A. Calculate base static tension using appropriate Formula 12
on page 107. The m value is listed in Table 10 on page 107.
Example
Belt Pitch = 14mm
Belt Size = 14MGT-3136, 224 teeth (123.46 in. P.L.)
Belt Width = 20mm
DriveR Sprocket = 32 grooves (5.614 in. P.D.)
DriveR Shaft Speed = 35 rpm
DriveN Sprocket = 56 grooves (9.825 in. P.D.)
Actual Center Distance = 49.56 in.
TST =
Example
17.4DHP
+ mS 2 ,pounds
S
where:
Stock drive components are as follows:
DHP = Design Horsepower = 2.07 hp
1 ea. – 14MGT-3136-20 Poly Chain GT2 belt
1 ea. – 14MX-32S-20 driveR sprocket
1 ea. – 2012 Bushing with a 1-1/2 in. bore
1 ea. – 14MX-56S-20 driveN sprocket
1 ea. – 3525 Bushing with a 2 in. bore
m = 0.92, constant for 14mm pitch, 20mm wide belt
from Table 10 on page 107.
S = (Sprocket Diameter) x (Shaft Speed) / 3822.76
= (5.614 in.) x (35 rpm) / 3822.76
S = 0.05
Step 6 Installation and Take-up
Procedure
Because of its high resistance to elongation (stretch), there is no
need to re-tension and take-up a Poly Chain GT2 belt drive. However, some adjustment must be provided when installing synchronous belt drives, as with nearly all power transmission systems, due
to manufacturing and assembly tolerances and initial tensioning re-
16
quirements. Table 11 on page 108 lists the standard installation
and take-up requirements for a given belt length. Additional center
distance adjustment is needed when installing the belt over flanged
sprockets (see Table 11 on page 108.)
R
17.4(2.07)
+ (0.92)(0.05)2
(0.05)
= 700.23 + 0.002lb.
= 700.2 lb.
TST =
TST
TST
Low-Speed Poly Chain® GT®2 Drive Design Procedure – continued
Procedure — continued
B. Calculate minimum and maximum deflection forces using
Formulas 13 and 14 on page 107. The Y value is listed in
Table 10.
Example
C. Determine the deflection distance using 1/64" per inch of
span length.
NOTE: Deflection forces must be applied evenly across
the entire belt width.
Example
Deflection Dis tance =
t
,inches
64
Deflection Dis tance =
49.52
64
a. Calculate the belt span length
 D −d 
t = C 2 −

 2 
2
where:
Deflection Distance = 0.77 in.
t = Span Length, inches
C = Center Distance = 49.56 in.
D = diameter of larger sprocket = 9.825 in. P.D.
d = diameter of smaller sprocket = 5.614 in. P.D.
t=
 9.825 − 5.614
49.562 − 



2
2
D. Applying The Tension:
At the center of span (t), apply a force perpendicular to the belt
span large enough to deflect the belt 0.77 inch from its normal
free position. Be sure that the force is applied evenly across the
entire belt width. Note that one sprocket should be free to rotate
during the belt tensioning process.
t = 49.52 in.
Compare the measured deflection force with the range of minimum to maximum deflection forces calculated previously.
b. Calculate Minimum and Maximum belt deflection
forces referring to Formulas 13 and 14 on page 107:
1. If the measured deflection force is less than the minimum
recommended deflection force, the belt should be tightened.
2. If the measured deflection force is greater than the maximum recommended deflection force, the belt should be
loosened.
t
14
. TST +   Y
L
Min.Deflection Force =
,pounds
16
where:
TST
t
L
Y
= 700.2 pounds static tension as calculated above
= 49.52 inches span length as calculated above
= 123.46 inches belt length
= 134.57 (constant for Table 10 on page 107)
 49.52 
14
. ( 700.2) + 
 (134.57)
 123.46
Min.Deflection Force =
16
Min. Deflection Force = 65 lb.
Example
When the Ore Conveyer belt drive is properly tensioned,
a belt span deflection of 0.77 in. should require a deflection force within the range of 65 to 69 lb.
Step 8 Verify Speed Reducer Overhung Load
Procedure
An Overhung Load calculation verifies that the belt drive system will
not overload the speed reducer shaft and bearings. The Overhung
Load calculation for speed reducers varies from manufacturer to
manufacturer. Please refer to speed reducer catalogs or contact
the speed reducer manufacturer for further assistance.
t
15
. TST +   Y
L
Max .Deflection Force =
,pounds
16
 49.52 
15
. ( 700.2) + 
 (134.57)
 123.46
Max .Deflection Force =
16
Max. Deflection Force = 69 lb.
R
17
Low-Speed Poly Chain® GT®2 Drive Design Procedure – continued
Advantages of the Low-Speed Drive Design Procedure
Having read through the Low-Speed Drive Design Procedure and
example, some may wonder if the extra steps required are really
worth the effort. Absolutely! Using the low-speed drive design techniques for drives operating at speeds less than 500 rpm can result
in a much smaller drive package at a lower cost. Outlined below is a
comparison of the Low-Speed Drive Design Procedure with the traditional drive design procedure. The benefits of designing with a
Low Speed Service Factor, Actual Horsepower Load, and Speed
Reducer Efficiency are demonstrated. Combining these techniques can result in a substantially narrower belt drive width which
saves space and reduces cost.
Comparison 1 — Traditional Drive Design Procedure
The traditional drive design procedure is outlined on pages 22-25
and should still be used for belt drives operating at speeds greater
than 500 rpm. In the past this procedure was used to select all Poly
Chain belt drives. The new “Low-Speed Drive Design Procedure”
results in belt drive systems better sized for low speed power transmission system that typically utilize speed reducers and roller
chain.
Using the traditional design procedure to select the belt drive system for the Ore Conveyor example on pages 14-17 would result in a
much wider belt. The traditional design procedure does not account
for a low-speed service factor, the actual operating load of the motor, or speed reducer efficiency. Rather, the belt selection is based
purely on the name plate horsepower rating of the motor with a
standard service factor. For the Ore Conveyor example this would
mean a 5 hp name plate rating and a 1.7 service factor resulting in a
Design Horsepower for the belt drive of (5.00 hp) x (1.7) = 8.50 hp.
This is over 4 times the Design Horsepower of 2.07 hp determined
using the Low-Speed Drive Design Procedure. Referring to the
Horsepower Rating Tables on pages 66-70, a belt width of 90mm
is required for this higher 8.50 Design Horsepower Load using
the Traditional Design Method compared to a belt width of only
a 20mm for the 2.07 Design Horsepower Load using the
Low-Speed Design Method.
Comparison 2 — Benefit of Low-Speed Service Factor
Using a low-speed service factor can reduce the required belt width
compared to a standard service factor value. The reason for this is
directly related to belt drive operating speeds. Detrimental affects
such as belt tensile cord fatigue and belt wear both occur during belt
drive operation, but accumulate in direct proportion to the operating
speed. Lower operating speeds result in less belt damage over time
allowing the use of less severe service factors in the belt drive selection process. Service factors especially for belt drives operating
at low speeds (500 rpm and less; includes many roller chain applications) are provided in Table 1—Service Factors For Low-Speed
Roller Chain Drive Conversions on page 10.
1.3 low-speed service factor: Design Horsepower = (5.00 hp) x
(1.3) = 6.50 hp. Referring to the Horsepower Rating Tables on
pages 66-70, the belt width required for 6.50 Design Horsepower is only 68mm compared to the 90mm belt width required for the Traditional Design Method in Comparison 1.
Comparison 3 — Benefit of Designing with Actual Motor Load
Typical belt drive selections are based upon motor nameplate
horsepower ratings. However, industry surveys estimate that half of
all U.S. motors operate at less than 60 percent of their rated load,
and one third operate at below 50 percent of their rated load. So,
sizing belt drives based on true operating loads can result in a more
compact sized belt drive system.
Continuing with the Ore Conveyor Example, the Proportioned Amperage Rating approach was used to calculate a Motor Load of 3.00
hp. Substituting the reduced 3.00 hp motor load: Design Horsepower = (3.00 hp) x (1.3) = 3.90 hp. Referring to the Horsepower
Rating Tables on pages 66-70, the belt width required for 3.90 Design Horsepower is only 37mm compared to the 68mm belt width
required in Comparison 2.
Comparison 4 — Benefit of Adjusting for Speed Reducer Efficiency
Due to gear meshing, bearing friction, oil viscosity, etc. power
losses within speed reducers result in heat generation. So, not all
the power applied to the input shaft of a speed reducer is transmitted through to the output shaft. A speed reducer’s efficiency rating
defines how much power loss occurs from within. Typical speed reducer efficiencies can range as high as 97% for well designed helical gear type reducers to as low as 28% for some worm gear type
units (see Table 3 on page 12.) When a belt drive system is powered by the output shaft of a speed reducer, the actual horsepower
load carried by the belt is less due to the reducer power losses. Accounting for this reduced horsepower load when selecting a belt
drive system can result in a narrower belt width.
For the Ore Conveyor Example, the speed reducer efficiency was
calculated to be 53%. Accounting for this 53% efficiency: Design
Horsepower = (3.00 hp) x (1.3) x (53/100) = 2.07 hp. Referring to
the Horsepower Rating Tables on pages 66-70, the belt width required for 2.07 Design Horsepower is only 20mm compared to
the 37mm belt width required in Comparison 3.
Summary
Belt width using the Traditional Drive Design Procedure = 90mm.
Belt width using the Low-Speed Drive Design Procedure = 20mm.
Referring to the Ore Conveyor Example, a low-speed service factor
of 1.3 is recommended for this application. Substituting the reduced
18
R
Low Speed Drive Design Information Sheet
For Drive Selections with Shaft Speeds Less Than 500 rpm
Drive Layout
Distributor:
(check one)
Customer:
Drive Identification (location, number, etc.)
Motor Reducer
Belt Drive Driven
DriveR Information:
Motor Nameplate Data
Rated Horsepower =
Rated RPM =
Efficiency =
Rated Voltage =
Rated Amps =
Rated Torque =
Actual Motor Load =
AC Three-Phase ❑
Motor Type:
Output speed:
AC Single-Phase ❑
Constant ❑
DC (Direct Current) ❑
Variable ❑
Measured Motor Data
Voltage:
Phase 1 =
Phase 2 =
Phase 3 =
Amps:
Phase 1 =
Phase 2 =
Phase 3 =
Reducer Information:
Reducer Type: Helical ❑
Planetary ❑
Cycloidal ❑
Worm ❑
Output RPM =
Rated Input HP/Torque =
Combination Type ❑
Other ❑
Reducer Ratio =
Rated Output HP/Torque =
Existing Drive Information:
Drive Type: Chain ❑
If chain, Type; 2/#60, #80, etc. =
V-Belt ❑
Synchronous Belt ❑
Lubed ❑
Unlubed ❑
Belt Drive on
Reducer Output Shaft
Current Drive Service Life =
DriveR Sprocket/Sheave =
(teeth/OD)
DriveR Shaft Diameter =
DriveN Sprocket/Sheave =
(teeth/OD)DriveN Shaft Diameter =
Center Distance:
Minimum =
Nominal =
Maximum =
Motor Belt Drive
Reducer Driven
Type of Center Distance Adjustment:
Idler used:
Yes ❑
No ❑
Inside ❑
Backside ❑
DriveN Information:
Type of Equipment:
Actual Horsepower Required =
Required Operating RPM =
Required Speed Ratio =
Hours/Day =
Days/Week =
Shock Load: Light ❑
Moderate ❑
Start Up Load: % Overload =
Weeks/Year=
Severe ❑
Starting Torque =
Special Requirements:
Space Limitations:
Maximum DriveR Dia. =
Maximum DriveN Dia. =
Maximum DriveR Width =
Maximum DriveN Width =
Environmental Conditions:
Belt Conductivity Required ❑
Temperature Range =
Oil Mist ❑
Belt Drive on
Reducer Input Shaft
Oil Splash ❑
Moisture ❑
Abrasives ❑
Drive Sketch:
R
19
Gates Poly Chain® GT ®2 Belt System Specifications
To satisfy a wide range of loads, speeds and applications, Poly
Chain GT2 Belts and Sprockets are made in a selection of sizes,
capacities and dimensions.
The three principal dimensions of a belt are:
pitch
pitch length
width
Belt pitch is the distance in millimeters between two adjacent tooth
centers as measured on the pitch line of the belt. Belt pitch length is
the total length (circumference) in millimeters as measured along
the pitch line. The theoretical pitch line of a Poly Chain GT2 Belt lies
within the tensile member.
The three principal dimensions of a sprocket are:
pitch
number of sprocket grooves
width
On the sprocket, pitch is the distance between groove centers and
is measured on the sprocket’s pitch circle. See illustration at right.
The pitch circle of the sprocket coincides with the pitch line of the
belt mating with it. The sprocket’s pitch diameter is always greater
than its outside diameter.
Any Poly Chain GT2 Belt must be run with Poly Chain GT2 sprockets of the same pitch.
Gates Poly Chain GT2 belts are made in 8mm and 14mm pitches.
Standard belt sizes are listed in the stock Poly Chain GT2 Belt Tables on page 21. Specifications for the 8mm and 14mm pitch belts
list the belt pitch lengths, number of teeth, stock widths and appropriate weights. Using the information from these tables, a code for
ordering a specific belt can be determined as shown in the following
examples:
Belt
Pitch
(mm)
Belt
Pitch Length
(mm)
Belt
Width
(mm)
8MGT
640
12
14MGT
1190
37
Sprockets for Poly Chain GT2 belts are also made in 8mm and
14mm pitches. Standard sprocket sizes are listed in the Sprocket
Specification Tables on Pages 72 through 77. For each Poly Chain
GT2 Belt width, there is a table listing the sprocket code symbol, the
applicable bushing style and pertinent dimensional information.
The sprocket code symbol components are determined by using
the following examples:
Pitch
(mm)
Sprocket Designation
& No. of Grooves
Width
(mm)
8MX
48S*
12
14MX
36S*
37
*The “S” is used after the number of grooves to help identify it is a
sprocket and avoid any confusion with the belt code.
The Bushing style to be used with a specific sprocket is listed in the
Sprocket Specifications Tables. Reference to the Stock Bushings
for Poly Chain GT2 Sprockets plus Bore and Keyseat information
on Pages 82 through 84 will give you the data needed to order the
proper bushing. For example,
Style 2517 Bushing with a 2-inch bore
20
R
Gates Poly Chain® GT ®2 Belt Standard Line
Stock Sizes
8mm Pitch Lengths
Designation
No. of
Teeth
8MGT-352
44
8MGT-416
52
8MGT-456
57
8MGT-480
60
8MGT-544
68
8MGT-608
76
8MGT-640
80
8MGT-720
90
8MGT-800
100
8MGT-896
112
8MGT-1000
125
8MGT-1120
140
8MGT-1200
150
8MGT-1280
160
8MGT-1440
180
8MGT-1600
200
8MGT-1792
224
8MGT-2000
250
8MGT-2240
280
8MGT-2400
300
8MGT-2520
315
8MGT-2840
355
8MGT-3200
400
8MGT-3600
450
8MGT-4000
500
8MGT-4480
560
Length
mm
in
352
13.86
416
16.38
456
17.96
480
18.90
544
21.42
608
23.94
640
25.20
720
28.35
800
31.50
896
35.28
1000
39.37
1120
44.09
1200
47.24
1280
50.39
1440
56.69
1600
62.99
1792
70.55
2000
78.74
2240
88.19
2400
94.49
2520
99.21
2840
111.81
3200
125.98
3600
141.73
4000
157.48
4480
176.38
Designation
No. of
Teeth
14MGT-994
7l
14MGT-1120
80
14MGT-1190
85
14MGT-1260
90
14MGT-1400
100
14MGT-1568
112
14MGT-1750
125
14MGT-1890
135
14MGT-1960
140
14MGT-2100
150
14MGT-2240
160
14MGT-2380
170
14MGT-2520
180
14MGT-2660
190
14MGT-2800
200
14MGT-3136
224
14MGT-3304
236
14MGT-3500
250
14MGT-3920
280
14MGT-4410
315
8mm Widths
12mm
(.47 in.)
21mm
(.83 in.)
14mm Pitch Lengths
Length
mm
in
994
39.13
1120
44.09
1190
46.85
1260
49.61
1400
55.12
1568
61.73
1750
68.90
1890
74.41
1960
77.17
2100
82.68
2240
88.19
2380
93.70
2520
99.21
2660
104.72
2800
110.24
3136
123.46
3304
130.08
3500
137.80
3920
154.33
4410
173.62
14mm Widths
36mm
(1.42 in.)
62mm
(2.44 in.)
20mm
(.79 in.)
37mm
(1.46 in.)
68mm
(2.68 in.)
90mm
(3.54 in.)
125mm
(4.92 in.)
Long Length Poly Chain GT2 Belting Stock Widths
8mm Pitch Widths
12mm
21mm
36mm
14mm Pitch Widths
20mm
37mm
Special widths available upon request.
Dimensions are given in inches and millimeters. Inches are shown in black type. Millimeters are shown in blue type.
R
21
Poly Chain® GT®2 Belt Drive Selection Procedure
Selection of a stock Poly Chain GT2 Belt Drive System involves
these seven steps:
Step 3 Select The Sprockets and Belt Length
Procedure
1. Calculate The Design Horsepower
2. Select The Belt Pitch
3. Select The Sprockets And Belt Length
4. Select The Proper Belt Width
5. Check And Specify Stock Drive Component
6. Installation And Take-up
7. Calculate Belt Tensioning Requirements
A. Determine the speed ratio. The speed ratio can be calculated
by dividing the rpm of the faster shaft by the rpm of the slower
shaft.
Example
Motor Speed = 1160 rpm
Gear Pump Speed = 580 rpm
Speed Ratio =
Sample Drive Selection Problem
A gear pump is to be driven by a 30 hp normal torque electric motor
with an output speed of 1160 rpm. The gear pump is to be driven at
580 rpm ±5%. The center distance is to be approximately 30
inches, but can be altered ±3 inches, if necessary. The motor shaft
has a 21 8 inch O.D. and the pump shaft has a 3 inch O.D. The pump
will operate 16 hours a day, five days a week. The pump sprocket is
limited to a maximum of 18 inches O.D. There are no unusual drive
conditions. Design using Poly Chain GT2.
Step 1 Calculate The Design Horsepower
Procedure
To calculate the design horsepower, first determine the relative severity, then select a service factor for the drive. Average hours per
day of service also should be considered. Locate the power source
and the driveN unit in the Service Factor Table on page 27. The design hp then is determined by multiplying the rated hp (usually the
nameplate rating) by the service factor determined above.
B. Select The Sprocket Combination And Belt Length: Referring to the Stock Drive Selection Tables on pages 28-61, find
the proper set of tables for the belt pitch (8mm or 14mm) found
in Step 2. Looking down the speed ratio column, find the value
which most closely matches the belt drive speed ratio required.
Reading across the selected speed ratio line, find the stock
DriveR and DriveN sprocket combination available. Reading
further across, locate the belt drive center distance which most
closely matches the target center distance specified. The belt
sizes are listed across the top of the table for each corresponding center distance.
Multiple sprocket combinations will often be available for a
given speed ratio. In such cases, selection of the proper drive
combination will depend on the center distance required, minimum or maximum required sprocket diameters and the recommended minimum sprocket diameter for electric motors (see
Table 4 on page 26).
After selecting possible sprocket combinations and center distances, record the belt length (top of column) and the length
factor (bottom of column).
Example
Example
Using the Service Factor Table, the driveR can be found
in the first group. Since the pump will run 16 hours per
day, follow the continuous service column down to the
driveN machines group for gear pumps. The recommended Service Factor is 1.7.
Belt pitch = 8mm and 14mm
Belt Drive Speed Ratio = 2.00
Center Distance = 30.00 ±3.00 in.
Design Horsepower = (Motor Load) x (Service Factor)
= (30) x (1.7)
Design Horsepower = 51 hp
Step 2 Select The Belt Pitch
Procedure
Using the design hp and the rpm of the smaller sprocket, select the
belt pitch from the Belt Pitch Selection Guide on page 25.
Example
Motor Speed = 1160 rpm
Locate 1160 rpm on the “RPM of Faster Shaft” scale on
the left side of the chart and move over to where the 51
Design Horsepower line intersects. The intersection falls
within the 8mm pitch range, but near the 14mm pitch
area. Both 8mm and 14mm pitch drives should be considered.
22
rpm of faster shaft 1160
= 2.00
=
rpm of slower shaft 580
R
First, refer to the 8mm Pitch Stock Drive Selection Tables
on pages 28-41. Reading down the Speed Ratio column
locate 2.00 on the bottom of page 34 and the top of page
36. The various sprocket combinations within the allowable center distance range is six. Of these, two are closest to the desired 30 inches. These are 25 to 50 groove,
and 40 to 80 groove sprocket combinations. The minimum sprocket diameter of 6.1 inches for a 30 hp motor at
1160 rpm (See Table 4 on page 26) eliminates the 25 to
50 and 40 to 80 groove sprocket combinations. Therefore,
an 8mm pitch drive will not be utilized for this drive system.
Now refer to the 14mm Pitch Stock Drive Selection Tables on pages 42-61. Reading down the Speed Ratio Column locate 2.00 on page 52. Several combinations are
shown which will meet the 30 ±3 inch center distance requirement. The maximum O.D. limit of 18 inches on the
driveN sprocket eliminates the 56 to 112 groove combination. The preference for a center distance close to 30
inches would favor the 40 to 80 and 28 to 56 groove combinations. However, the 4.912 inch pitch diameter of the
28 groove sprocket is less than the recommended minimum diameter of 6.1 inches for the electric motor. So the
40 groove DriveR sprocket, 80 groove DriveN
sprocket, and 14MX-2380 (170 Tooth) belt combination
is selected. Also note that the Belt Length Correction
Factor is 1.01 with a center distance of 30.11 inches.
Poly Chain® GT®2 Belt Drive Selection Procedure (continued)
C. Check the belt speed. Do not exceed 6500 fpm (feet per minute) with stock sprockets. Belt Speed can be calculated using
the following formula:
across the “RPM” row and down the sprocket size column
until the two intersect at a Rated Base Horsepower of
55.60 hp.
Speed (rpm)
3.82
Next, referencing the Additional Horsepower for Speed
Ratio Factor Table, find the listing for a 2.00 speed ratio.
An add-on factor of 2.65 hp is listed. Then, referencing
the Belt Length Correction Factor Table, find the listing for
a 14MGT-2380 belt. A correction factor of 1.01 is listed.
V (fpm)= PD (inches) ×
Example
14mm Pitch Drive with 40 groove driveR:
V=
7.018 × 1160
= 21311
. fpm
3.82
Calculate the Corrected Horsepower Rating:
Calculating the belt speed for the drive system being
considered shows that the belt speed does not exceed
6500 fpm and can be considered further.
Rated Drive Horsepower =
[Rated Base Horsepower + Added HP for Speed Ratio] ×
(Belt Length Correction Factor) = [55.60 hp + 2.65 hp] ×
(1.01)
Rated Drive Horsepower = 58.83 hp
Step 4 Select The Proper Belt Width
Procedure
Horsepower Rating Tables are located on Pages 62-70 for
standard belt pitches and stock belt widths. The base horsepower rating is given in the upper table as a function of the speed
(rpm) of the faster shaft and diameter of the small sprocket. The
speed of the faster shaft is located in the left hand column. Across
the top are various stock sprocket sizes. The base horsepower rating of a given sprocket, at a specific speed, is the point at which the
“rpm” row and the “sprocket size” column intersect.
This base horsepower rating must be corrected for speed down
speed ratios, and for the belt length selected. The following formula
should be used to calculate the total drive horsepower rating:
Rated Drive Horsepower = [Rated Base Horsepower
+ Additional Horsepower for Speed Ratio]
×(Belt Length Correction Factor)
Referring to the Additional Horsepower for Speed Ratio Factor
Table, select a value based upon the drive operating speed and the
speed ratio. This value should be added to the base horsepower
rating. Multiply the corrected rating by the applicable Belt Length
Correction Factor determined in Step 3B or from the Belt Length
Correction Factor Table. The drive horsepower rating must equal or
exceed design horsepower.
Where there are several choices, space limitations may control the
selection. In addition, the following guidelines should be considered:
1. Larger sprockets result in reduced belt width.
2. Larger sprockets yield longer drive service life.
3. Avoid drives where the belt width exceeds the smaller
sprocket diameter.
4. Avoid drives where center distance is greater than 8 times
the diameter of the smaller sprocket. Refer to Engineering
Section I-10 on page 101 for additional details.
The Drive Horsepower Rating of 58.83 hp exceeds the
Design Horsepower target of 51 hp. So, a belt width of
20mm is acceptable.
Step 5 Check and Specify Stock Drive Components
Procedure
A. Check the sprockets selected in Steps 3 and 4 against the
design requirements using the dimensions provided in the
Sprocket Specification Tables on pages 72 through 77. Use
flange diameters when checking against maximum diameter
requirements.
Example
From the table on page 74, we find the 14MX-80S-20
driveN Sprocket has an overall flange diameter of 14.620
inches, which is less than the 18 inch maximum diameter
specified.
B. Determine the bushing size required for each sprocket
and check bore sizes by using the Sprocket Specification Tables. From the Stock Bushing tables on pages 82-84, check the
bore range and keyway dimensions against the design requirements.
Example
Also from the sprocket data on page 74 we note that the
14MX-40S-20 sprocket requires a 2517 bushing and
the 14MX-80S-20 sprocket requires a 3525 bushing. In
the bushing table on page 82, a 2517 bushing has a
bore range of 1 2 to 21116 inches, which includes the 21 8
inch bore required for the driveR shaft. The 3525 bushing has a bore range from 13 16 to 315 16 inches, which includes the 3 inch bore required for the driveN shaft.
C. Specify stock drive components using proper
designations.
Example
Example
Stock drive components are as follows:
Referring to the 14mm pitch Horsepower Rating Table for
20mm Wide belts on page 66. Read down the left hand
column for “RPM of Faster Shaft” and locate 1160 rpm.
Read the sprocket sizes listed across the top of the table
and locate the 40 groove, 5.614 inch P.D. column. Read
1 ea. 14MGT-2380-20 Poly Chain GT2 belt
1 ea. 14MX-40S-20 driveR sprocket
1 ea. 2517 Bushing with a 2-1/8 in. bore
1 ea. 14MX-80S-20 driveN sprocket
1 ea. 3525 Bushing with a 3 in. bore
R
23
Step 6 Installation and Takeup
B. Calculate minimum and maximum deflection forces using
Formulas 13 and 14 on page 107. The Y value is listed in
Table 10
Procedure
Because of its high resistance to elongation (stretch), there is no
need to re-tension and take up a Poly Chain GT2 belt drive. However, some adjustment must be provided when installing synchronous belt drives, as with nearly all power transmission systems, to
account for manufacturing and assembly tolerances and initial
tensioning requirements. Table 11 on page 108 lists the standard
installation and take-up requirements for a given belt length. Additional center distance adjustment is needed when installing the belt
over flanged sprockets (see Table 11 on page 108.)
Example
As can be seen in the Sprocket Specifications Table on
page 74, both of the sprockets are flanged. Therefore, an
additional allowance will be needed for installation over
flanged sprockets. The total installation and tensioning allowances, are shown below.
Example
a. Calculate the belt span length
 D −d 
t = C 2 −

 2 
where:
t = Span Length, inches
C = Center Distance = 30.11 in.
D = diameter of larger sprocket = 14.036 in. P.D.
d = diameter of smaller sprocket = 7.018 in. P.D.
t=
 14.036 − 7.018
30.112 − 



2
2
Installation Allowance = 0.13 in. + 1.97 in. = 2.10 in.
t = 29.90 in.
Tensioning Allowance = 0.04 in.
b. Calculate Minimum and Maximum belt deflection
forces referring to Formulas 13 and 14 on page 107:
Subtracting this from the nominal center distance value
gives a minimum center distance necessary for belt installation of (30.11 inch – 2.10 inch) = 28.10 inches. From
the problem statement, the center distance can be reduced down to 27.0 in. if necessary. So, there is sufficient center distance adjustment to easily install the
belt.
Procedure
A. Calculate base static tension using appropriate Formula 12
on page 107. The m value is listed in Table 10 on page 107.
Example
Belt Pitch = 14mm
Belt Size = 14MGT-2380, 170 teeth (93.70 in. P.L.)
Belt Width = 20mm
DriveR Sprocket = 40 grooves (7.018 in. P.D.)
DriveR Shaft Speed = 1160 rpm
DriveN Sprocket = 80 grooves (14.036 in. P.D.)
Actual Center Distance = 30.11 in.
TST =
17.4 DHP
+ mS 2, pounds
S
Where:
DHP = Design Horsepower = 51 hp
m = 0.92, constant for 14mm pitch, 20mm wide belt
from Table 10 on page 107
S = (Sprocket Diameter) x (Shaft Speed) / 3822.76
= (7.018 in.) x (1160 rpm) / 3822.76
S = 2.13
TST =
t
14
. TST +   Y
L
Min. Deflection Force =
16
where:
TST
t
L
Y
= 420.78 pounds static tension as calculated before
= 29.90 inches span length as calculated before
= 93.70 inches belt length
= 134.57 (constant for Table 10 on page 107)
Min. Deflection Force =
16
t
15
. TST +   Y
L
Max . Deflection Force =
16
 29.90
15
. ( 420.79) + 
 (134.57)
 93.70
Max . Deflection Force =
16
Max. Deflection Force = 42.13 lb.
17.4 ( 51)
+ (0.92)( 2.13)2
( 2.13)
TST = 420.79 lb.
R
 29.90
14
. ( 420.79) + 
 (134.57)
 93.70
Min. Deflection Force = 39.50 lb.
TST = 416.62 + 4.17 lb.
24
2
D. Applying The Tension:
Procedure - continued
C. Determine the deflection distance using 1/64″ per inch of
span length.
NOTE: Deflection forces must be applied evenly across
the entire belt width.
Example
At the center of span (t), apply a measured force perpendicular
to the belt span large enough to deflect the belt 0.47 inch from
its normal free position. Be sure that the force is applied evenly
across the entire belt width. Note that one sprocket should be
free to rotate during the belt tensioning process.
Compare the measured deflection force with the range of minimum to maximum deflection forces calculated before.
Deflection Distance =
t
,inches
64
1. If the measured deflection force is less than the minimum recommended deflection force, the belt should be
tightened.
Deflection Distance =
29.9
64
2. If the measured deflection force is greater than the
maximum recommended deflection force, the belt
should be loosened.
Deflection Distance = 0.47 in.
Example
When the Gear Pump belt drive is properly tensioned, a
belt span deflection of 0.47 in. should require a deflection
force within the range of 40 to 42 lb.
Belt Pitch Selection Guide
10000
7000
5000
3450
1750
1160
RPM of Faster Shaft
870
600
400
8mm
Poly Chain GT2
200
14mm
Poly Chain GT2
100
80
60
40
Nonstandard
20
10
0.1
0.2
0.4
0.6 0.8 1.0
2.0
4.0
6.0 8.0 10
20
40
60
80 100
200
400
600 800 1000
Design Horsepower
R
25
Table No. 4
Minimum Recommended Sprocket Pitch Diameters
for General Purpose Electric Motors
Synchronous Belt Drives
For a given motor horsepower and speed, the total belt pull is related to the motor sprocket size. As this size decreases, the total belt pull increases. Therefore, to limit the resultant load on motor shaft and bearings, NEMA lists minimum sprocket sizes for the various motors. The
sprocket on the motor (DriveR Sheave) should be at least as large as the diameter specified in Table No. 4.
Motor RPM (60 Cycle and 50 Cycle Electric Motors)
Motor
Horsepower
575
485*
690
575*
870
725*
1160
950*
1750
1425*
3450
2850*
Motor
Horsepower
1
2
—
—
2.0
—
—
—
1
4
—
—
2.2
2.0
—
—
3
2.7
2.3
2.2
2.2
2.0
—
1
2.7
2.7
2.2
2.2
2.2
2.0
1 12
2
3.4
2.7
2.7
2.2
2.2
2.2
2
3
4.1
3.4
2.7
2.7
2.2
2.2
3
5
4.1
4.1
3.4
2.7
2.7
2.2
5
2
4.7
4.1
4.0
3.4
2.7
2.7
7 12
10
5.4
4.7
4.0
4.0
3.4
2.7
10
15
6.1
5.4
4.7
4.0
4.0
3.4
15
20
7.4
6.1
5.4
4.7
4.0
4.0
20
25
8.1
7.4
6.1
5.4
4.0
4.0
25
30
9.0
8.1
6.1
6.1
4.7
—
30
40
9.0
9.0
7.4
6.1
5.4
—
40
50
9.9
9.0
7.6
7.4
6.1
—
50
60
10.8
9.9
9.0
7.2
6.7
—
60
75
12.6
11.7
8.6
9.0
7.7
—
75
100
16.2
13.5
10.8
9.0
7.7
—
100
125
18.0
16.2
13.5
10.8
9.5#
—
125
150
19.8
18.0
16.2
11.7
9.5
—
150
200
19.8
19.8
19.8
—
11.9
—
200
250
19.8
19.8
—
—
—
—
250
300
24.3
24.3
—
—
—
—
300
3
1
1
7
1
1
2
2
4
* These RPM are for 50 cycle electric motors.
# Use 8.6 for Frame Number 444 T only.
Data in the white area of Table No. 4 are from NEMA Standard MG-1-14-42, June, 1972. Data in the gray area are from MG-1-14-43, January, 1968. The
blue area is a composite of electric motor manufacturers data. They are generally conservative, and specific motors and bearings may permit the use of a
smaller motor sprocket. Consult the motor manufacturer. See Engineering Section I-3 page 99.
26
R
Poly Chain® GT®2 Service Factors
DriveN Machine
DriveR
The driveN machines listed below are
representative samples only. Select a
driveN machine whose load characteristics
most closely approximate those of the
machine being considered.
AC Motors: Normal Torque, Squirrel Cage, Synchronous, Split Phase, Inverter Controlled
AC Motors: High Torque, High Slip, Repulsion-Induction, Single Phase, Series Wound, Slip Ring.
DC Motors: Shunt Wound, Stepper Motors
DC Motors: Series Wound, Compound Wound,
Servo Motors.
Engines: Multiple Cylinder Internal Combustion.
Engines: Single Cylinder Internal Combustion.
Line shafts Clutches
Intermittent
Service
Normal Service
Continuous
Service
Intermittent
Service
Normal Service
Continuous
Service
Up to 8 Hours
Daily or
Seasonal
8-16 Hours
Daily
16-24 Hours
Daily
Up to 8 Hours
Daily or
Seasonal
8-16 Hours
Daily
16-24 Hours
Daily
Display, Dispensing Equipment
Instrumentation
Measuring Equipment
Medical Equipment
Office, Projection Equipment
1.0
1.2
1.4
1.2
1.4
1.6
Appliances, Sweepers, Sewing Machines
Screens, Oven Screens, Drum, Conical
Woodworking Equipment: (Light)
Band Saws, Drills, Lathes
1.1
1.3
1.5
1.3
1.5
1.7
Agitators for Liquids
Conveyors: Belt, Light Package
Drill Press, Lathes, Saws
Laundry Machinery
Woodworking Equipment: (Heavy)
Circular Saws, Joiners, Planers
1.2
1.4
1.6
1.6
1.8
2.0
Agitators: Semi-liquid
Compressors: Centrifugal
Conveyor Belt: Coal, Ore, Sand
Dough Mixers
Line Shafts
Machine Tools: Grinder, Shaper
Boring Mill, Milling Machines
Paper Machinery (except Pulpers)
Presses, Punches, Shears
Printing Machinery
Pumps: Centrifugal, Gear
Screens: Revolving, Vibratory
1.3
1.5
1.7
1.6
1.8
2.0
Brick Machinery (except Pug Mills)
Conveyor: Apron, Pan, Bucket, Elevator
Extractors, Washers
Fans, Centrifugal Blowers
Generators & Exciters
Hoists
Rubber Calender, Mills, Extruders
1.4
1.6
1.8
1.8
2.0
2.2
Centrifuges
Screw Conveyors
Hammer Mills
Paper Pulpers
Textile Machinery
1.5
1.7
1.9
1.9
2.1
2.3
Blowers: Positive Displacement
Mine Fans
Pulverizers
1.6
1.8
2.0
2.0
2.2
2.4
Compressors, Reciprocating
Crushers: Gyratory, Jaw, Roll
Mills: Ball, Rod, Pebble, etc.
Pumps, Reciprocating
Saw Mill Equipment
1.7
1.9
2.1
2.1
2.3
2.5
R
27
Table No. 5
Drive Selection Table
8mm PITCH BELTS
Sprocket
Combinations
DriveN
8MGT-1200
P.L 47.24
150 teeth
8MGT-1280
P.L 50.39
160 teeth
8MGT-1440
P.L 56.69
180 teeth
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.042
1.050
1.050
1.053
1.056
1.056
1.057
1.059
1.060
1.060
1.063
1.063
1.067
1.067
1.067
1.071
1.071
1.071
1.104
1.105
1.111
1.111
1.117
1.118
1.119
1.120
1.120
1.125
1.125
1.125
1.125
8MGT-1120
P.L 44.09
140 teeth
Length Factor*
2.206
2.506
2.807
3.008
3.208
3.409
3.609
3.810
4.010
4.211
4.511
4.812
5.013
5.314
5.614
6.015
6.316
6.717
7.118
7.519
8.020
5.013
4.211
6.316
4.010
3.810
7.519
5.614
3.609
5.314
7.118
3.409
6.717
3.208
4.812
8.020
3.008
4.511
6.015
5.314
4.211
4.010
5.013
6.717
3.810
7.519
2.807
5.614
3.609
4.511
6.316
9.023
8MGT-1000
P.L 39.37
125 teeth
22
25
28
30
32
34
36
38
40
42
45
48
50
53
56
60
63
67
71
75
80
50
42
63
40
38
75
56
36
53
71
34
67
32
48
80
30
45
60
53
42
40
50
67
38
75
28
56
36
45
63
90
16.22
15.75
15.28
14.96
14.65
14.33
14.02
13.70
13.39
13.07
12.60
12.13
11.81
11.34
10.87
10.24
9.76
9.13
8.50
13.47
9.29
12.28
10.94
8.26
15.12
12.83
10.55
11.73
13.38
13.70
12.20
9.68
14.01
8.49
15.51
11.33
14.33
12.99
10.31
18.58
18.11
17.64
17.32
17.01
16.69
16.38
16.06
15.75
15.43
14.96
14.49
14.17
13.70
13.23
12.60
12.12
11.49
10.86
10.23
9.45
14.33
15.59
12.36
15.90
16.22
10.55
13.46
16.53
13.93
11.18
16.85
11.81
17.16
14.72
9.84
17.48
15.19
12.91
14.09
15.74
16.06
14.56
12.04
16.37
10.86
17.87
13.70
16.69
15.35
12.67
20.15
19.68
19.21
18.90
18.58
18.27
17.95
17.64
17.32
17.01
16.53
16.06
15.75
15.27
14.80
14.17
13.70
13.07
12.44
11.81
11.02
15.90
17.16
13.93
17.48
17.79
12.12
15.04
18.11
15.51
12.75
18.42
13.38
18.74
16.30
11.41
19.05
16.77
14.49
15.67
17.32
17.63
16.14
13.62
17.95
12.43
19.45
15.27
18.26
16.93
14.25
10.22
21.73
21.26
20.79
20.47
20.16
19.84
19.53
19.21
18.90
18.58
18.11
17.64
17.32
16.85
16.38
15.75
15.27
14.64
14.01
13.38
12.60
17.48
18.74
15.51
19.05
19.37
13.70
16.61
19.68
17.08
14.33
20.00
14.96
20.31
17.87
12.99
20.63
18.34
16.06
17.24
18.89
19.21
17.71
15.19
19.52
14.01
21.02
16.85
19.84
18.50
15.82
11.80
24.88
24.41
23.94
23.62
23.31
22.99
22.68
22.36
22.05
21.73
21.26
20.79
20.47
20.00
19.53
18.90
18.42
17.79
17.16
16.53
15.75
20.63
21.89
18.66
22.20
22.52
16.85
19.76
22.83
20.23
17.48
23.15
18.11
23.46
21.02
16.14
23.78
21.49
19.21
20.39
22.04
22.36
20.86
18.34
22.67
17.16
24.17
20.00
22.99
21.65
18.97
14.95
0.91
0.96
1.00
1.03
1.05
1.10
8MGT-896
P.L 35.28
112 teeth
2.206
2.506
2.807
3.008
3.208
3.409
3.609
3.810
4.010
4.211
4.511
4.812
5.013
5.314
5.614
6.015
6.316
6.717
7.118
7.519
8.020
4.812
4.010
6.015
3.810
3.609
7.118
5.314
3.409
5.013
6.717
3.208
6.316
3.008
4.511
7.519
2.807
4.211
5.614
4.812
3.810
3.609
4.511
6.015
3.409
6.717
2.506
5.013
3.208
4.010
5.614
8.020
8MGT-800
P.L 31.50
100 teeth
22
25
28
30
32
34
36
38
40
42
45
48
50
53
56
60
63
67
71
75
80
48
40
60
38
36
71
53
34
50
67
32
63
30
45
75
28
42
56
48
38
36
45
60
34
67
25
50
32
40
56
80
Speed
Ratio
8MGT-720
P.L 28.35
90 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
Grooves (Inches) Grooves (Inches)
Center Distance, Inches
8MGT-640
P.L 25.20
80 teeth
DriveR
9.13
8.66
8.19
7.88
7.56
7.25
6.93
6.62
6.30
5.99
5.51
10.71
10.24
9.77
9.45
9.14
8.82
8.51
8.19
7.88
7.56
7.09
6.62
6.30
5.83
12.28
11.81
11.34
11.03
10.71
10.40
10.08
9.77
9.45
9.14
8.66
8.19
7.88
7.40
6.93
14.17
13.70
13.23
12.92
12.60
12.29
11.97
11.66
11.34
11.03
10.55
10.08
9.77
9.29
8.82
8.19
7.72
6.14
6.46
7.72
8.03
9.29
6.46
6.77
8.03
8.35
9.61
9.92
9.92
11.18
7.95
11.50
11.81
7.09
8.66
6.06
7.17
10.24
7.64
9.06
12.13
9.53
7.40
8.98
10.55
7.72
5.28
9.29
6.85
10.87
8.43
12.44
7.40
12.76
10.32
11.97
13.23
10.00
13.54
13.86
8.19
11.10
14.17
11.57
8.82
14.49
9.45
14.80
12.36
8.03
5.75
9.61
7.32
6.30
6.61
6.22
7.87
8.19
6.69
11.18
8.90
6.61
7.79
9.45
9.76
8.27
6.93
8.50
10.08
8.43
7.24
5.90
10.00
5.82
8.82
7.48
11.58
7.40
10.39
9.05
0.79
0.83
0.87
13.07
10.79
8.50
9.68
11.34
11.65
10.16
7.63
11.97
*This length factor must be used to determine the proper belt width.
Center Distance is greater than eight times the small diameter and the large sprocket is not flanged. See Engineering Section I-10 for additional details.
28
R
8mm PITCH BELTS
Sprocket
Combinations
8MGT-1600
P.L 62.99
200 teeth
8MGT-1792
P.L 70.55
224 teeth
8MGT-2000
P.L 78.74
250 teeth
8MGT-2240
P.L 88.19
280 teeth
8MGT-2400
P.L 94.49
300 teeth
8MGT-2520
P.L 99.21
315 teeth
8MGT-2840
P.L 111.81
355 teeth
8MGT-3200
P.L 125.98
400 teeth
8MGT-3600
P.L 141.73
450 teeth
8MGT-4000
P.L 157.48
500 teeth
8MGT-4480
P.L 176.38
560 teeth
Speed
Ratio
28.03
27.56
27.09
26.77
26.46
26.14
25.83
25.51
25.20
24.88
24.41
23.94
23.62
23.15
22.68
22.05
21.57
20.94
20.31
19.68
18.90
23.78
25.04
21.81
25.35
25.67
20.00
22.91
25.98
23.38
20.63
26.30
21.26
26.61
24.17
19.29
26.93
24.64
22.36
23.54
25.19
25.51
24.01
21.49
25.82
20.31
27.32
23.15
26.14
24.80
22.12
18.10
31.81
31.34
30.87
30.55
30.24
29.92
29.61
29.29
28.98
28.66
28.19
27.72
27.40
26.93
26.46
25.83
25.35
24.72
24.09
23.46
22.68
27.56
28.82
25.59
29.13
29.45
23.78
26.69
29.76
27.16
24.41
30.08
25.04
30.39
27.95
23.07
30.71
28.42
26.14
27.32
28.97
29.29
27.79
25.27
29.60
24.09
31.10
26.93
29.92
28.58
25.90
21.88
35.90
35.43
34.96
34.65
34.33
34.02
33.70
33.39
33.07
32.76
32.28
31.81
31.50
31.02
30.55
29.92
29.45
28.82
28.19
27.56
26.77
31.65
32.91
29.68
33.23
33.54
27.87
30.79
33.86
31.26
28.50
34.17
29.13
34.49
32.05
27.16
34.80
32.52
30.24
31.42
33.07
33.39
31.89
29.37
33.70
28.19
35.20
31.02
34.02
32.68
30.00
25.98
40.63
40.16
39.69
39.37
39.06
38.74
38.43
38.11
37.80
37.48
37.01
36.54
36.22
35.75
35.28
34.65
34.17
33.54
32.91
32.28
31.50
36.38
37.64
34.41
37.95
38.27
32.60
35.51
38.58
35.98
33.23
38.90
33.86
39.21
36.77
31.89
39.53
37.24
34.96
36.14
37.79
38.11
36.61
34.09
38.42
32.91
39.92
35.75
38.74
37.40
34.72
30.71
43.78
43.31
42.84
42.52
42.21
41.89
41.58
41.26
40.95
40.63
40.16
39.69
39.37
38.90
38.43
37.80
37.32
36.69
36.06
35.43
34.65
39.53
40.79
37.56
41.10
41.42
35.75
38.66
41.73
39.13
36.38
42.05
37.01
42.36
39.92
35.04
42.68
40.39
38.11
39.29
40.94
41.26
39.76
37.24
41.57
36.06
43.07
38.90
41.89
40.55
37.87
33.86
46.14
45.67
45.20
44.88
44.57
44.25
43.94
43.62
43.31
42.99
42.52
42.05
41.73
41.26
40.79
40.16
39.68
39.05
38.42
37.79
37.01
41.89
43.15
39.92
43.46
43.78
38.11
41.02
44.09
41.49
38.74
44.41
39.37
44.72
42.28
37.40
45.04
42.75
40.47
41.65
43.30
43.62
42.12
39.60
43.93
38.42
45.43
41.26
44.25
42.91
40.23
36.22
52.44
51.97
51.50
51.18
50.87
50.55
50.24
49.92
49.61
49.29
48.82
48.35
48.03
47.56
47.09
46.46
45.98
45.35
44.72
44.09
43.31
48.19
49.45
46.22
49.76
50.08
44.41
47.32
50.39
47.79
45.04
50.71
45.67
51.02
48.58
43.70
51.34
49.05
46.77
47.95
49.60
49.92
48.42
45.90
50.23
44.72
51.73
47.56
50.55
49.21
46.53
42.52
59.52
59.05
58.58
58.27
57.95
57.64
57.32
57.01
56.69
56.38
55.90
55.43
55.12
54.64
54.17
53.54
53.07
52.44
51.81
51.18
50.39
55.27
56.53
53.31
56.85
57.16
51.49
54.41
57.48
54.88
52.12
57.79
52.75
58.11
55.67
50.79
58.42
56.14
53.86
55.04
56.69
57.01
55.51
52.99
57.32
51.81
58.82
54.64
57.64
56.30
53.62
49.60
67.40
66.93
66.46
66.14
65.83
65.51
65.20
64.88
64.57
64.25
63.78
63.31
62.99
62.52
62.05
61.42
60.94
60.31
59.68
59.05
58.27
63.15
64.41
61.18
64.72
65.04
59.37
62.28
65.35
62.75
60.00
65.67
60.63
65.98
63.54
58.66
66.30
64.01
61.73
62.91
64.57
64.88
63.38
60.86
65.19
59.68
66.69
62.52
65.51
64.17
61.49
57.48
75.27
74.80
74.33
74.02
73.70
73.39
73.07
72.76
72.44
72.13
71.65
71.18
70.87
70.39
69.92
69.29
68.82
68.19
67.56
66.93
66.14
71.02
72.28
69.06
72.60
72.91
67.24
70.16
73.23
70.63
67.87
73.54
68.50
73.86
71.42
66.54
74.17
71.89
69.61
70.79
72.44
72.76
71.26
68.74
73.07
67.56
74.57
70.39
73.39
72.05
69.37
65.35
84.72
84.25
83.78
83.47
83.15
82.84
82.52
82.21
81.89
81.58
81.10
80.63
80.32
79.84
79.37
78.74
78.27
77.64
77.01
76.38
75.59
80.47
81.73
78.51
82.05
82.36
76.69
79.61
82.68
80.08
77.32
82.99
77.95
83.31
80.87
75.99
83.62
81.34
79.06
80.24
81.89
82.21
80.71
78.19
82.52
77.01
84.02
79.84
82.84
81.50
78.82
74.80
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.042
1.050
1.050
1.053
1.056
1.056
1.057
1.059
1.060
1.060
1.063
1.063
1.067
1.067
1.067
1.071
1.071
1.071
1.104
1.105
1.111
1.111
1.117
1.118
1.119
1.120
1.120
1.125
1.125
1.125
1.125
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
1.14
DriveR
DriveN
No. of
grooves
No. of
grooves
22
25
28
30
32
34
36
38
40
42
45
48
50
53
56
60
63
67
71
75
80
48
40
60
38
36
71
53
34
50
67
32
63
30
45
75
28
42
56
48
38
36
45
60
34
67
25
50
32
40
56
80
22
25
28
30
32
34
36
38
40
42
45
48
50
53
56
60
63
67
71
75
80
50
42
63
40
38
75
56
36
53
71
34
67
32
48
80
30
45
60
53
42
40
50
67
38
75
28
56
36
45
63
90
Length Factor*
R
29
Table No. 5
8mm PITCH BELTS
Sprocket
Combinations
DriveN
9.21
10.23
6.60
8.50
8.74
12.60
13.94
12.91
10.55
11.49
9.44
11.81
9.92
7.30
11.10
12.12
8.49
10.39
9.84
8.97
7.24
11.42
10.55
8.81
7.07
7.94
13.31
12.44
10.70
8.96
6.92
6.21
5.49
9.29
8.18
6.20
8.50
7.78
7.07
10.86
9.76
7.78
10.07
9.36
8.65
7.22
12.75
11.65
9.67
11.96
11.25
10.54
9.12
5.81
6.67
7.39
6.82
8.25
8.96
7.23
8.81
10.39
8.72
10.14
10.86
8.16
12.28
7.60
14.80
13.69
11.72
14.01
13.30
12.59
11.17
9.02
10.77
12.19
12.90
10.21
14.32
9.66
8.66
8.10
7.55
6.75
10.23
9.68
9.13
8.33
5.64
6.36
5.24
7.07
5.96
7.22
7.94
6.82
8.65
7.54
6.42
5.86
11.81
11.26
10.70
9.91
6.97
8.80
9.51
8.40
10.23
9.12
8.00
7.44
13.70
13.15
12.59
11.80
8.87
10.69
11.41
10.30
12.12
11.01
9.90
9.34
8.38
15.74
15.19
14.64
13.85
10.92
12.74
13.45
12.34
14.16
13.06
11.95
11.39
11.49
10.15
13.14
17.00
18.34
17.32
14.96
15.90
13.85
16.22
14.32
11.72
15.51
16.53
12.90
14.80
11.16
10.45
12.35
17.71
16.85
15.11
13.37
9.02
17.16
16.06
14.08
16.37
15.66
14.95
13.53
11.39
13.13
14.55
15.27
12.58
16.69
12.02
9.32
10.75
18.11
17.55
17.00
16.21
13.28
15.10
15.82
14.71
16.53
15.42
14.31
13.76
13.06
11.72
14.72
18.58
19.92
18.89
16.53
17.48
15.43
17.79
15.90
13.29
17.08
18.11
14.48
16.37
12.74
12.03
13.92
19.29
18.42
16.69
14.95
10.60
18.74
17.63
15.66
17.95
17.24
16.53
15.10
12.97
14.71
16.13
16.84
14.15
18.26
13.60
10.90
12.33
19.68
19.13
18.58
17.79
14.86
16.68
17.39
16.28
18.10
17.00
15.89
15.33
14.64
13.30
16.29
20.15
21.49
20.47
18.11
19.05
17.00
19.37
17.47
14.87
18.66
19.68
16.05
17.95
14.32
13.60
15.50
20.86
20.00
18.26
16.53
12.18
20.31
19.21
17.23
19.52
18.81
18.10
16.68
14.55
16.28
17.71
18.42
15.73
19.84
15.18
12.48
13.91
21.26
20.70
20.15
19.36
16.44
18.26
18.97
17.86
19.68
18.57
17.46
16.91
17.79
16.45
19.44
23.30
24.64
23.62
21.26
22.20
20.15
22.52
20.62
18.02
21.81
22.83
19.20
21.10
17.47
16.76
18.65
24.01
23.15
21.41
19.68
15.33
23.46
22.36
20.39
22.67
21.96
21.25
19.83
17.70
19.44
20.86
21.57
18.88
22.99
18.33
15.64
17.06
24.41
23.85
23.30
22.51
19.59
21.41
22.12
21.01
22.83
21.72
20.62
20.06
0.79
0.83
0.87
0.91
0.96
1.00
7.56
8.90
7.87
5.51
6.45
6.77
9.13
10.47
9.45
7.08
8.03
5.97
8.34
6.45
6.05
7.08
7.63
8.66
5.34
6.92
8.27
7.40
5.66
7.71
6.60
6.84
10.71
12.05
11.02
8.66
9.60
7.55
9.92
8.02
8MGT-896
P.L 35.28
112 teeth
9.13
8MGT-800
P.L 31.50
100 teeth
8MGT-1440
P.L 56.69
180 teeth
1.127
1.127
1.132
1.133
1.136
1.143
1.143
1.167
1.167
1.176
1.178
1.183
1.184
1.188
1.189
1.190
1.190
1.194
1.196
1.200
1.200
1.200
1.200
1.200
1.214
1.235
1.244
1.250
1.250
1.250
1.250
1.250
1.260
1.262
1.263
1.264
1.267
1.268
1.268
1.270
1.273
1.280
1.286
1.313
1.313
1.316
1.324
1.325
1.333
1.333
1.333
1.333
8MGT-1280
P.L 50.39
160 teeth
Length Factor*
7.118
8.020
6.015
3.409
2.506
3.208
4.812
4.211
5.614
4.010
5.314
7.118
4.511
3.810
6.316
5.013
7.519
8.020
6.717
3.008
3.609
4.812
6.015
9.023
3.409
4.211
5.614
4.010
4.511
5.013
6.015
7.519
6.316
5.314
4.812
6.717
3.810
7.118
9.023
8.020
2.807
3.208
3.609
4.211
6.316
5.013
4.511
5.314
4.010
4.812
5.614
6.015
8MGT-1200
P.L 47.24
150 teeth
71
80
60
34
25
32
48
42
56
40
53
71
45
38
63
50
75
80
67
30
36
48
60
90
34
42
56
40
45
50
60
75
63
53
48
67
38
71
90
80
28
32
36
42
63
50
45
53
40
48
56
60
8MGT-1120
P.L 44.09
140 teeth
6.316
7.118
5.314
3.008
2.206
2.807
4.211
3.609
4.812
3.409
4.511
6.015
3.810
3.208
5.314
4.211
6.316
6.717
5.614
2.506
3.008
4.010
5.013
7.519
2.807
3.409
4.511
3.208
3.609
4.010
4.812
6.015
5.013
4.211
3.810
5.314
3.008
5.614
7.118
6.316
2.206
2.506
2.807
3.208
4.812
3.810
3.409
4.010
3.008
3.609
4.211
4.511
8MGT-1000
P.L 39.37
125 teeth
63
71
53
30
22
28
42
36
48
34
45
60
38
32
53
42
63
67
56
25
30
40
50
75
28
34
45
32
36
40
48
60
50
42
38
53
30
56
71
63
22
25
28
32
48
38
34
40
30
36
42
45
Speed
Ratio
8MGT-720
P.L 28.35
90 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
8MGT-640
P.L 25.20
80 teeth
DriveR
10.78
14.64
15.98
14.96
12.59
13.54
11.49
13.85
11.96
9.35
13.15
14.17
10.54
12.43
8.80
8.08
9.99
15.35
14.48
12.75
11.01
1.03
1.05
1.10
30
R
8mm PITCH BELTS
Sprocket
Combinations
8MGT-1600
P.L 62.99
200 teeth
8MGT-1792
P.L 70.55
224 teeth
8MGT-2000
P.L 78.74
250 teeth
8MGT-2240
P.L 88.19
280 teeth
8MGT-2400
P.L 94.49
300 teeth
8MGT-2520
P.L 99.21
315 teeth
8MGT-2840
P.L 111.81
355 teeth
8MGT-3200
P.L 125.98
400 teeth
8MGT-3600
P.L 141.73
450 teeth
8MGT-4000
P.L 157.48
500 teeth
8MGT-4480
P.L 176.38
560 teeth
Speed
Ratio
20.94
19.60
22.59
26.45
27.79
26.77
24.41
25.35
23.30
25.67
23.78
21.17
24.96
25.98
22.36
24.25
20.62
19.91
21.80
27.16
26.30
24.56
22.83
18.49
26.61
25.51
23.54
25.82
25.11
24.40
22.98
20.85
22.59
24.01
24.72
22.03
26.14
21.48
18.79
20.22
27.56
27.00
26.45
25.66
22.74
24.56
25.27
24.16
25.98
24.87
23.77
23.22
24.72
23.38
26.37
30.23
31.57
30.55
28.19
29.13
27.08
29.45
27.56
24.95
28.74
29.76
26.14
28.03
24.40
23.69
25.58
30.94
30.08
28.34
26.61
22.27
30.39
29.29
27.32
29.60
28.89
28.18
26.76
24.63
26.37
27.79
28.50
25.82
29.92
25.26
22.58
24.00
31.34
30.79
30.23
29.44
26.52
28.34
29.05
27.94
29.76
28.65
27.55
27.00
28.82
27.48
30.47
34.33
35.67
34.65
32.28
33.23
31.18
33.54
31.65
29.05
32.83
33.86
30.23
32.12
28.50
27.79
29.68
35.04
34.17
32.44
30.70
26.37
34.49
33.38
31.41
33.70
32.99
32.28
30.86
28.73
30.47
31.88
32.59
29.91
34.01
29.36
26.68
28.10
35.43
34.88
34.33
33.54
30.62
32.43
33.15
32.04
33.85
32.75
31.65
31.09
33.54
32.20
35.20
39.05
40.39
39.37
37.01
37.95
35.90
38.27
36.38
33.78
37.56
38.58
34.96
36.85
33.22
32.51
34.41
39.76
38.90
37.16
35.43
31.09
39.21
38.11
36.14
38.42
37.71
37.00
35.59
33.46
35.19
36.61
37.32
34.64
38.74
34.09
31.40
32.82
40.16
39.61
39.05
38.26
35.35
37.16
37.87
36.77
38.58
37.48
36.37
35.82
36.69
35.35
38.35
42.20
43.54
42.52
40.16
41.10
39.05
41.42
39.53
36.93
40.71
41.73
38.11
40.00
36.37
35.66
37.56
42.91
42.05
40.31
38.58
34.24
42.36
41.26
39.29
41.57
40.87
40.16
38.74
36.61
38.34
39.76
40.47
37.79
41.89
37.24
34.55
35.98
43.31
42.76
42.20
41.42
38.50
40.31
41.02
39.92
41.73
40.63
39.52
38.97
39.05
37.71
40.71
44.56
45.90
44.88
42.52
43.46
41.41
43.78
41.89
39.29
43.07
44.09
40.47
42.36
38.73
38.03
39.92
45.27
44.41
42.67
40.94
36.61
44.72
43.62
41.65
43.93
43.23
42.52
41.10
38.97
40.70
42.12
42.83
40.15
44.25
39.60
36.92
38.34
45.67
45.12
44.56
43.78
40.86
42.67
43.38
42.28
44.09
42.99
41.88
41.33
45.35
44.01
47.01
50.86
52.20
51.18
48.82
49.76
47.71
50.08
48.19
45.59
49.37
50.39
46.77
48.66
45.03
44.33
46.22
51.57
50.71
48.97
47.24
42.91
51.02
49.92
47.95
50.23
49.53
48.82
47.40
45.27
47.00
48.42
49.13
46.45
50.55
45.90
43.22
44.64
51.97
51.42
50.86
50.08
47.16
48.97
49.68
48.58
50.39
49.29
48.18
47.63
52.44
51.10
54.09
57.95
59.29
58.27
55.90
56.85
54.80
57.16
55.27
52.67
56.45
57.48
53.85
55.74
52.12
51.41
53.30
58.66
57.79
56.06
54.33
49.99
58.11
57.00
55.04
57.32
56.61
55.90
54.48
52.36
54.09
55.51
56.22
53.54
57.63
52.98
50.30
51.72
59.05
58.50
57.95
57.16
54.24
56.06
56.77
55.66
57.48
56.37
55.27
54.72
60.31
58.97
61.97
65.82
67.16
66.14
63.78
64.72
62.68
65.04
63.15
60.55
64.33
65.35
61.73
63.62
60.00
59.29
61.18
66.53
65.67
63.93
62.20
57.87
65.98
64.88
62.91
65.19
64.49
63.78
62.36
60.23
61.96
63.38
64.09
61.41
65.51
60.86
58.18
59.60
66.93
66.38
65.82
65.04
62.12
63.93
64.64
63.54
65.35
64.25
63.14
62.59
68.19
66.85
69.84
73.70
75.04
74.02
71.65
72.60
70.55
72.91
71.02
68.42
72.20
73.23
69.60
71.49
67.87
67.16
69.05
74.41
73.54
71.81
70.08
65.74
73.86
72.75
70.79
73.07
72.36
71.65
70.23
68.11
69.84
71.26
71.97
69.29
73.38
68.74
66.06
67.48
74.80
74.25
73.70
72.91
70.00
71.81
72.52
71.41
73.23
72.12
71.02
70.47
77.64
76.30
79.29
83.15
84.49
83.47
81.10
82.05
80.00
82.36
80.47
77.87
81.65
82.68
79.05
80.94
77.32
76.61
78.50
83.86
82.99
81.26
79.53
75.19
83.31
82.20
80.24
82.52
81.81
81.10
79.68
77.56
79.29
80.71
81.42
78.74
82.83
78.19
75.51
76.93
84.25
83.70
83.15
82.36
79.45
81.26
81.97
80.86
82.68
81.57
80.47
79.92
1.127
1.127
1.132
1.133
1.136
1.143
1.143
1.167
1.167
1.176
1.178
1.183
1.184
1.188
1.189
1.190
1.190
1.194
1.196
1.200
1.200
1.200
1.200
1.200
1.214
1.235
1.244
1.250
1.250
1.250
1.250
1.250
1.260
1.262
1.263
1.264
1.267
1.268
1.268
1.270
1.273
1.280
1.286
1.313
1.313
1.316
1.324
1.325
1.333
1.333
1.333
1.333
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
1.14
DriveR
DriveN
No. of
grooves
No. of
grooves
63
71
53
30
22
28
42
36
48
34
45
60
38
32
53
42
63
67
56
25
30
40
50
75
28
34
45
32
36
40
48
60
50
42
38
53
30
56
71
63
22
25
28
32
48
38
34
40
30
36
42
45
71
80
60
34
25
32
48
42
56
40
53
71
45
38
63
50
75
80
67
30
36
48
60
90
34
42
56
40
45
50
60
75
63
53
48
67
38
71
90
80
28
32
36
42
63
50
45
53
40
48
56
60
Length Factor*
R
31
Table No. 5
8mm PITCH BELTS
Sprocket
Combinations
DriveN
8MGT-1200
P.L 47.24
150 teeth
8MGT-1280
P.L 50.39
160 teeth
8MGT-1440
P.L 56.69
180 teeth
Length Factor*
1.333
1.339
1.340
1.340
1.343
1.357
1.360
1.364
1.389
1.395
1.396
1.400
1.400
1.400
1.400
1.406
1.412
1.415
1.420
1.429
1.429
1.429
1.429
1.440
1.455
1.471
1.472
1.474
1.479
1.489
1.493
1.500
1.500
1.500
1.500
1.500
1.500
1.500
1.509
1.520
1.545
1.556
1.559
1.563
1.563
1.575
1.577
1.578
1.579
1.595
1.600
1.600
12.56
13.27
14.38
13.83
11.20
18.42
18.97
19.52
16.83
16.44
14.53
17.94
16.04
15.09
7.05
6.65
6.25
8.63
8.24
7.84
6.22
5.81
10.21
9.82
9.42
7.81
7.41
12.11
11.71
11.31
9.71
9.31
7.70
14.16
13.76
13.36
11.77
11.37
9.76
7.61
8.17
5.26
5.67
6.08
9.19
9.75
6.86
7.26
7.67
10.77
11.32
8.45
8.85
9.25
5.95
7.55
12.66
13.22
10.35
10.75
11.15
7.84
9.46
9.11
14.71
15.26
12.40
12.80
13.20
9.91
11.52
16.52
16.12
15.73
14.14
13.74
12.14
10.12
11.49
17.07
17.62
14.77
15.16
15.56
12.29
13.89
8.41
9.86
8.97
12.50
11.46
10.47
11.92
11.03
14.55
13.51
12.85
14.29
13.40
16.91
15.88
14.43
15.87
14.98
18.49
17.45
14.14
14.85
15.96
15.40
12.78
19.99
20.54
21.10
18.41
18.01
16.11
19.52
17.62
16.67
9.95
19.12
18.73
15.08
15.63
19.83
17.14
14.44
13.08
20.38
20.94
18.56
18.17
17.77
15.78
16.34
10.30
19.67
19.27
18.88
17.29
16.89
15.30
13.30
14.66
20.22
20.78
17.92
18.32
18.72
15.45
17.05
10.59
16.01
17.44
16.56
20.06
19.03
17.29
18.01
19.11
18.56
15.94
23.14
23.70
24.25
21.56
21.17
19.27
22.67
20.77
19.82
13.13
22.27
21.88
18.23
18.79
22.98
20.29
17.60
16.24
23.54
24.09
21.72
21.32
20.92
18.94
19.50
13.49
22.82
22.43
22.03
20.45
20.05
18.46
16.47
17.82
23.38
23.93
21.08
21.47
21.87
18.61
20.20
13.78
19.17
20.60
19.72
23.22
22.18
8.60
9.32
10.44
9.88
10.98
11.69
12.80
12.25
9.61
16.84
17.39
17.95
15.26
14.86
12.96
16.36
14.46
13.51
15.97
15.57
11.91
12.47
16.68
13.98
11.27
9.91
17.23
17.79
15.41
15.01
14.62
12.62
13.18
17.55
17.15
13.50
14.05
18.26
15.56
12.86
11.49
18.81
19.36
16.99
16.59
16.19
14.20
14.76
18.09
17.70
17.30
15.71
15.32
13.72
11.71
13.08
18.65
19.20
16.35
16.74
17.14
13.87
15.47
0.91
0.96
1.00
1.03
1.05
6.48
7.26
8.38
7.82
10.54
11.10
11.65
8.95
8.55
6.63
10.06
8.15
7.19
12.43
12.99
13.54
10.85
10.45
8.53
11.96
10.05
9.09
14.48
15.03
15.58
12.89
12.50
10.59
14.00
12.10
11.14
11.56
11.16
7.48
8.04
12.27
9.57
13.61
13.21
9.54
10.10
14.32
11.62
8.90
12.83
13.38
11.00
10.60
10.20
8.19
8.75
14.87
15.42
13.05
12.65
12.25
10.25
10.81
7.39
7.94
8.50
5.79
5.38
8.96
9.52
10.07
7.37
6.97
6.90
8.48
6.57
6.50
6.10
8.09
7.69
9.67
9.27
7.22
8.80
6.08
10.38
7.67
7.78
8.33
5.93
5.53
9.36
9.91
7.52
7.12
6.71
10.93
11.49
9.10
8.70
8.30
6.84
7.44
6.39
9.03
7.98
6.49
7.96
7.06
10.61
9.57
0.79
0.83
0.87
6.36
8MGT-1120
P.L 44.09
140 teeth
8.020
7.519
6.717
7.118
9.023
3.810
3.409
3.008
5.013
5.314
6.717
4.211
5.614
6.316
11.229
4.511
4.812
7.519
7.118
4.010
6.015
8.020
9.023
3.609
3.208
5.013
5.314
5.614
7.118
6.717
11.229
4.211
4.511
4.812
6.015
6.316
7.519
9.023
8.020
3.810
3.409
5.614
5.314
5.013
7.519
6.316
11.229
7.118
6.015
6.717
4.010
4.812
8MGT-1000
P.L 39.37
125 teeth
80
75
67
71
90
38
34
30
50
53
67
42
56
63
112
45
48
75
71
40
60
80
90
36
32
50
53
56
71
67
112
42
45
48
60
63
75
90
80
38
34
56
53
50
75
63
112
71
60
67
40
48
8MGT-896
P.L 35.28
112 teeth
6.015
5.614
5.013
5.314
6.717
2.807
2.506
2.206
3.609
3.810
4.812
3.008
4.010
4.511
8.020
3.208
3.409
5.314
5.013
2.807
4.211
5.614
6.316
2.506
2.206
3.409
3.609
3.810
4.812
4.511
7.519
2.807
3.008
3.208
4.010
4.211
5.013
6.015
5.314
2.506
2.206
3.609
3.409
3.208
4.812
4.010
7.118
4.511
3.810
4.211
2.506
3.008
8MGT-800
P.L 31.50
100 teeth
60
56
50
53
67
28
25
22
36
38
48
30
40
45
80
32
34
53
50
28
42
56
63
25
22
34
36
38
48
45
75
28
30
32
40
42
50
60
53
25
22
36
34
32
48
40
71
45
38
42
25
30
Speed
Ratio
8MGT-720
P.L 28.35
90 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
8MGT-640
P.L 25.20
80 teeth
DriveR
1.10
32
R
8mm PITCH BELTS
Sprocket
Combinations
8MGT-1600
P.L 62.99
200 teeth
8MGT-1792
P.L 70.55
224 teeth
8MGT-2000
P.L 78.74
250 teeth
8MGT-2240
P.L 88.19
280 teeth
8MGT-2400
P.L 94.49
300 teeth
8MGT-2520
P.L 99.21
315 teeth
8MGT-2840
P.L 111.81
355 teeth
8MGT-3200
P.L 125.98
400 teeth
8MGT-3600
P.L 141.73
450 teeth
8MGT-4000
P.L 157.48
500 teeth
8MGT-4480
P.L 176.38
560 teeth
Speed
Ratio
20.45
21.16
22.27
21.71
19.10
26.29
26.85
27.40
24.71
24.32
22.42
25.82
23.92
22.97
16.30
25.42
25.03
21.39
21.94
26.13
23.45
20.75
19.40
26.69
27.24
24.87
24.47
24.08
22.10
22.65
16.67
25.97
25.58
25.18
23.60
23.20
21.62
19.63
20.98
26.53
27.08
24.23
24.63
25.02
21.77
23.36
16.96
22.32
23.75
22.88
26.37
25.34
24.23
24.94
26.05
25.49
22.88
30.07
30.63
31.18
28.49
28.10
26.20
29.60
27.70
26.76
20.09
29.21
28.81
25.17
25.73
29.91
27.23
24.54
23.19
30.47
31.02
28.65
28.25
27.86
25.88
26.43
20.47
29.75
29.36
28.97
27.38
26.99
25.40
23.42
24.77
30.31
30.86
28.01
28.41
28.80
25.55
27.14
20.76
26.11
27.54
26.66
30.15
29.12
28.33
29.04
30.15
29.59
26.98
34.17
34.72
35.27
32.59
32.20
30.30
33.69
31.80
30.85
24.20
33.30
32.91
29.27
29.82
34.01
31.33
28.64
27.29
34.56
35.11
32.75
32.35
31.96
29.98
30.53
24.58
33.85
33.46
33.06
31.48
31.08
29.50
27.52
28.87
34.40
34.95
32.11
32.51
32.90
29.65
31.24
24.88
30.21
31.63
30.76
34.24
33.22
33.06
33.77
34.87
34.32
31.71
38.89
39.45
40.00
37.32
36.92
35.03
38.42
36.53
35.58
28.93
38.03
37.63
34.00
34.55
38.74
36.05
33.37
32.02
39.29
39.84
37.47
37.08
36.68
34.71
35.26
29.31
38.58
38.18
37.79
36.21
35.81
34.23
32.25
33.60
39.13
39.68
36.84
37.23
37.63
34.38
35.97
29.61
34.94
36.36
35.49
38.97
37.94
36.21
36.92
38.02
37.47
34.86
42.05
42.60
43.15
40.47
40.07
38.18
41.57
39.68
38.73
32.09
41.18
40.78
37.15
37.70
41.89
39.20
36.52
35.17
42.44
42.99
40.62
40.23
39.83
37.86
38.41
32.47
41.73
41.33
40.94
39.36
38.96
37.38
35.40
36.75
42.28
42.83
39.99
40.38
40.78
37.54
39.12
32.77
38.09
39.51
38.64
42.12
41.09
38.57
39.28
40.38
39.83
37.22
44.41
44.96
45.51
42.83
42.43
40.54
43.93
42.04
41.09
34.45
43.54
43.14
39.51
40.06
44.25
41.56
38.88
37.53
44.80
45.35
42.98
42.59
42.19
40.22
40.77
34.83
44.09
43.69
43.30
41.72
41.32
39.74
37.76
39.11
44.64
45.19
42.35
42.74
43.14
39.90
41.48
35.14
40.45
41.87
41.00
44.48
43.45
44.87
45.58
46.68
46.13
43.53
50.71
51.26
51.81
49.13
48.73
46.84
50.23
48.34
47.39
40.76
49.84
49.44
45.81
46.37
50.55
47.87
45.18
43.84
51.10
51.65
49.28
48.89
48.50
46.52
47.07
41.14
50.39
49.99
49.60
48.02
47.63
46.05
44.07
45.41
50.94
51.49
48.65
49.04
49.44
46.20
47.78
41.44
46.75
48.18
47.31
50.78
49.76
51.96
52.67
53.77
53.22
50.61
57.79
58.34
58.89
56.21
55.82
53.93
57.32
55.43
54.48
47.84
56.92
56.53
52.90
53.45
57.63
54.95
52.27
50.92
58.18
58.74
56.37
55.98
55.58
53.61
54.16
48.23
57.47
57.08
56.69
55.11
54.71
53.13
51.16
52.50
58.03
58.58
55.74
56.13
56.53
53.29
54.87
48.54
53.84
55.26
54.39
57.87
56.84
59.83
60.54
61.65
61.09
58.49
65.67
66.22
66.77
64.09
63.69
61.80
65.19
63.30
62.35
55.72
64.80
64.40
60.78
61.33
65.51
62.83
60.14
58.80
66.06
66.61
64.25
63.85
63.46
61.48
62.04
56.11
65.35
64.96
64.56
62.98
62.59
61.01
59.04
60.38
65.90
66.45
63.61
64.01
64.40
61.17
62.74
56.42
61.72
63.14
62.27
65.74
64.72
67.71
68.42
69.52
68.97
66.37
73.54
74.09
74.64
71.96
71.57
69.68
73.07
71.18
70.23
63.60
72.67
72.28
68.65
69.20
73.38
70.70
68.02
66.68
73.94
74.49
72.12
71.73
71.33
69.36
69.91
63.99
73.22
72.83
72.44
70.86
70.46
68.89
66.91
68.25
73.78
74.33
71.49
71.88
72.28
69.04
70.62
64.30
69.59
71.01
70.15
73.62
72.59
77.16
77.87
78.97
78.42
75.82
82.99
83.54
84.09
81.42
81.02
79.13
82.52
80.63
79.68
73.05
82.12
81.73
78.10
78.66
82.83
80.15
77.47
76.13
83.39
83.94
81.57
81.18
80.78
78.81
79.36
73.44
82.68
82.28
81.89
80.31
79.92
78.34
76.36
77.71
83.23
83.78
80.94
81.33
81.73
78.49
80.07
73.75
79.05
80.47
79.60
83.07
82.04
1.333
1.339
1.340
1.340
1.343
1.357
1.360
1.364
1.389
1.395
1.396
1.400
1.400
1.400
1.400
1.406
1.412
1.415
1.420
1.429
1.429
1.429
1.429
1.440
1.455
1.471
1.472
1.474
1.479
1.489
1.493
1.500
1.500
1.500
1.500
1.500
1.500
1.500
1.509
1.520
1.545
1.556
1.559
1.563
1.563
1.575
1.577
1.578
1.579
1.595
1.600
1.600
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
1.14
DriveR
DriveN
No. of
grooves
No. of
grooves
60
56
50
53
67
28
25
22
36
38
48
30
40
45
80
32
34
53
50
28
42
56
63
25
22
34
36
38
48
45
75
28
30
32
40
42
50
60
53
25
22
36
34
32
48
40
71
45
38
42
25
30
80
75
67
71
90
38
34
30
50
53
67
42
56
63
112
45
48
75
71
40
60
80
90
36
32
50
53
56
71
67
112
42
45
48
60
63
75
90
80
38
34
56
53
50
75
63
112
71
60
67
40
48
Length Factor*
R
33
Table No. 5
8mm PITCH BELTS
Sprocket
Combinations
DriveN
11.71
16.28
10.41
17.46
14.92
15.32
14.04
15.71
14.44
12.51
11.86
11.61
12.89
10.64
9.75
11.18
14.38
10.69
8.21
13.66
14.94
12.70
11.81
13.55
16.75
13.07
10.62
16.03
17.30
15.07
14.19
7.34
8.25
9.14
6.83
9.26
10.15
11.04
8.76
7.59
11.32
12.21
13.10
10.83
9.68
13.70
14.59
15.47
13.21
12.08
7.96
9.54
7.02
8.61
10.19
11.44
8.26
12.09
7.66
5.68
9.25
6.37
5.86
7.29
10.83
7.98
7.48
8.88
12.73
9.90
9.40
10.79
13.50
10.34
14.14
8.42
14.78
11.96
11.47
12.85
15.86
12.72
16.50
10.84
17.14
14.33
13.85
15.22
5.16
6.79
6.97
8.39
6.46
8.90
10.30
8.40
6.09
7.69
9.29
7.49
6.75
9.08
8.35
6.51
5.99
10.66
9.94
8.12
7.62
7.11
11.19
7.80
12.56
11.84
10.04
9.54
9.04
10.98
12.36
10.48
8.56
13.25
9.89
14.61
13.89
12.10
11.61
11.12
6.57
5.82
8.17
7.43
6.59
9.76
9.03
8.54
11.67
10.94
0.79
0.83
0.87
0.91
9.97
8.00
5.40
5.81
9.58
7.00
7.41
6.09
7.81
6.50
11.16
8.59
9.00
7.69
9.40
8.10
13.05
10.50
10.90
9.61
11.30
10.01
8.05
7.39
7.27
8.86
7.20
10.44
6.69
9.11
12.34
8.62
6.54
7.83
5.54
8.13
9.42
7.14
6.23
9.71
11.00
8.74
7.84
5.95
6.65
7.55
6.36
6.22
8MGT-1440
P.L 56.69
180 teeth
9.33
13.91
8.01
15.10
12.55
12.95
11.66
13.35
12.07
10.12
9.47
8.38
8MGT-1280
P.L 50.39
160 teeth
7.25
11.86
6.80
8MGT-1200
P.L 47.24
150 teeth
Length Factor*
1.600
1.607
1.607
1.636
1.647
1.656
1.658
1.667
1.667
1.667
1.667
1.672
1.675
1.680
1.690
1.698
1.714
1.727
1.750
1.750
1.750
1.763
1.765
1.767
1.775
1.778
1.778
1.786
1.786
1.800
1.800
1.818
1.853
1.861
1.867
1.867
1.867
1.868
1.875
1.875
1.875
1.893
1.905
1.909
1.920
1.969
1.971
1.972
1.972
1.974
2.000
2.000
8MGT-1120
P.L 44.09
140 teeth
8.020
4.511
9.023
3.609
5.614
5.314
6.316
5.013
6.015
7.519
8.020
11.229
6.717
4.211
7.118
9.023
4.812
3.810
5.614
6.316
14.036
6.717
6.015
5.314
7.118
8.020
11.229
5.013
7.519
4.511
9.023
4.010
6.316
6.717
5.614
11.229
14.036
7.118
6.015
7.519
9.023
5.314
8.020
4.211
4.812
6.316
6.717
7.118
14.036
7.519
5.013
5.614
8MGT-1000
P.L 39.37
125 teeth
80
45
90
36
56
53
63
50
60
75
80
112
67
42
71
90
48
38
56
63
140
67
60
53
71
80
112
50
75
45
90
40
63
67
56
112
140
71
60
75
90
53
80
42
48
63
67
71
140
75
50
56
8MGT-896
P.L 35.28
112 teeth
5.013
2.807
5.614
2.206
3.409
3.208
3.810
3.008
3.609
4.511
4.812
6.717
4.010
2.506
4.211
5.314
2.807
2.206
3.208
3.609
8.020
3.810
3.409
3.008
4.010
4.511
6.316
2.807
4.211
2.506
5.013
2.206
3.409
3.609
3.008
6.015
7.519
3.810
3.208
4.010
4.812
2.807
4.211
2.206
2.506
3.208
3.409
3.609
7.118
3.810
2.506
2.807
8MGT-800
P.L 31.50
100 teeth
50
28
56
22
34
32
38
30
36
45
48
67
40
25
42
53
28
22
32
36
80
38
34
30
40
45
63
28
42
25
50
22
34
36
30
60
75
38
32
40
48
28
42
22
25
32
34
36
71
38
25
28
Speed
Ratio
8MGT-720
P.L 28.35
90 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
8MGT-640
P.L 25.20
80 teeth
DriveR
13.30
17.85
12.00
19.04
16.50
16.89
15.62
17.29
16.02
14.09
13.45
15.13
18.32
14.65
12.22
17.61
18.88
16.65
15.77
14.88
19.43
13.59
20.62
18.07
18.47
17.20
18.87
17.60
15.67
15.03
10.87
16.72
19.90
16.23
13.81
19.18
20.45
18.23
17.35
18.05
22.58
16.76
23.77
21.23
21.63
20.35
22.02
20.75
18.84
18.20
14.07
19.87
23.05
19.39
16.98
22.34
23.61
21.38
20.51
15.28
16.17
17.04
14.80
13.67
9.52
17.44
14.31
18.08
12.43
18.72
15.92
15.43
16.80
9.73
16.86
17.75
18.62
16.38
15.25
11.14
19.02
15.90
19.66
14.03
20.29
17.50
17.01
18.38
11.35
20.02
20.90
21.78
19.54
18.42
14.35
22.18
19.06
22.81
17.20
23.45
20.66
20.18
21.53
14.57
13.36
14.73
12.87
10.98
15.62
12.29
16.98
16.26
14.48
13.99
13.51
14.95
16.32
14.46
12.58
17.20
13.88
18.55
17.84
16.06
15.58
15.09
16.53
17.90
16.04
14.17
18.77
15.47
20.13
19.41
17.65
17.16
16.68
10.62
13.72
13.00
13.01
16.09
15.37
14.60
17.67
16.95
16.19
19.25
18.53
19.69
21.05
19.21
17.35
21.93
18.64
23.28
22.57
20.81
20.32
19.84
11.19
19.36
22.40
21.69
0.96
1.00
1.03
1.05
1.10
34
R
8mm PITCH BELTS
Sprocket
Combinations
8MGT-1600
P.L 62.99
200 teeth
8MGT-1792
P.L 70.55
224 teeth
8MGT-2000
P.L 78.74
250 teeth
8MGT-2240
P.L 88.19
280 teeth
8MGT-2400
P.L 94.49
300 teeth
8MGT-2520
P.L 99.21
315 teeth
8MGT-2840
P.L 111.81
355 teeth
8MGT-3200
P.L 125.98
400 teeth
8MGT-3600
P.L 141.73
450 teeth
8MGT-4000
P.L 157.48
500 teeth
8MGT-4480
P.L 176.38
560 teeth
Speed
Ratio
21.21
25.73
19.93
26.92
24.38
24.78
23.51
25.18
23.91
22.00
21.36
17.25
23.03
26.21
22.55
20.15
25.49
26.76
24.54
23.66
13.84
23.18
24.06
24.93
22.70
21.58
17.54
25.33
22.22
25.96
20.37
26.60
23.81
23.33
24.69
17.76
14.19
22.85
24.21
22.37
20.52
25.09
21.81
26.44
25.72
23.96
23.48
23.00
14.47
22.52
25.56
24.84
24.99
29.52
23.72
30.70
28.17
28.56
27.29
28.96
27.69
25.78
25.15
21.06
26.82
29.99
26.34
23.94
29.27
30.54
28.32
27.45
17.70
26.97
27.84
28.72
26.49
25.37
21.35
29.11
26.01
29.75
24.17
30.38
27.60
27.12
28.47
21.57
18.05
26.64
28.00
26.16
24.32
28.87
25.60
30.22
29.50
27.75
27.27
26.79
18.33
26.31
29.34
28.63
29.10
33.61
27.82
34.80
32.26
32.66
31.39
33.06
31.79
29.88
29.25
25.17
30.92
34.08
30.44
28.05
33.37
34.64
32.42
31.55
21.84
31.07
31.94
32.81
30.59
29.48
25.47
33.21
30.11
33.84
28.28
34.48
31.70
31.22
32.57
25.69
22.20
30.74
32.10
30.26
28.43
32.97
29.70
34.32
33.60
31.85
31.37
30.90
22.49
30.42
33.44
32.73
33.83
38.34
32.55
39.52
36.99
37.39
36.12
37.78
36.52
34.61
33.98
29.92
35.64
38.81
35.17
32.78
38.10
39.36
37.15
36.27
26.60
35.80
36.67
37.54
35.32
34.21
30.22
37.94
34.84
38.57
33.01
39.20
36.43
35.95
37.30
30.44
26.97
35.47
36.82
35.00
33.16
37.70
34.44
39.04
38.33
36.58
36.10
35.63
27.26
35.15
38.17
37.45
36.98
41.49
35.71
42.67
40.14
40.54
39.27
40.93
39.67
37.77
37.13
33.07
38.80
41.96
38.32
35.94
41.25
42.51
40.30
39.43
29.77
38.95
39.82
40.69
38.47
37.36
33.37
41.09
38.00
41.72
36.17
42.35
39.58
39.10
40.45
33.60
30.14
38.63
39.98
38.15
36.32
40.85
37.59
42.19
41.48
39.73
39.26
38.78
30.43
38.30
41.32
40.61
39.34
43.85
38.07
45.03
42.50
42.90
41.63
43.29
42.03
40.13
39.49
35.44
41.16
44.32
40.68
38.30
43.61
44.87
42.66
41.79
32.14
41.31
42.18
43.05
40.84
39.72
35.74
43.45
40.36
44.08
38.53
44.71
41.94
41.47
42.81
35.97
32.51
40.99
42.34
40.51
38.68
43.21
39.95
44.55
43.84
42.10
41.62
41.14
32.81
40.66
43.68
42.97
45.64
50.15
44.38
51.33
48.81
49.20
47.94
49.60
48.33
46.43
45.80
41.75
47.46
50.62
46.98
44.61
49.91
51.17
48.96
48.09
38.46
47.61
48.49
49.36
47.14
46.03
42.05
49.75
46.66
50.38
44.84
51.01
48.25
47.77
49.12
42.28
38.84
47.29
48.64
46.82
44.99
49.51
46.26
50.86
50.14
48.40
47.92
47.45
39.14
46.97
49.98
49.27
52.73
57.24
51.47
58.42
55.89
56.29
55.02
56.68
55.42
53.52
52.89
48.84
54.55
57.71
54.07
51.70
57.00
58.26
56.05
55.18
45.57
54.70
55.57
56.44
54.23
53.12
49.15
56.84
53.75
57.47
51.93
58.10
55.33
54.86
56.20
49.38
45.95
54.38
55.73
53.91
52.08
56.60
53.35
57.94
57.23
55.49
55.01
54.54
46.25
54.06
57.07
56.36
60.61
65.11
59.34
66.29
63.77
64.16
62.90
64.56
63.29
61.40
60.77
56.73
62.43
65.58
61.95
59.58
64.87
66.14
63.92
63.06
53.46
62.58
63.45
64.32
62.11
61.00
57.03
64.71
61.63
65.35
59.81
65.98
63.21
62.74
64.08
57.26
53.84
62.26
63.61
61.79
59.96
64.47
61.23
65.82
65.11
63.37
62.89
62.42
54.14
61.94
64.95
64.24
68.49
72.99
67.22
74.17
71.64
72.04
70.78
72.43
71.17
69.28
68.64
64.61
70.30
73.46
69.83
67.45
72.75
74.01
71.80
70.93
61.34
70.46
71.33
72.19
69.98
68.88
64.91
72.59
69.51
73.22
67.69
73.85
71.09
70.61
71.96
65.14
61.72
70.14
71.48
69.66
67.84
72.35
69.11
73.69
72.98
71.24
70.77
70.29
62.03
69.82
72.82
72.11
77.94
82.44
76.68
83.62
81.10
81.49
80.23
81.88
80.62
78.73
78.10
74.06
79.75
82.91
79.28
76.91
82.20
83.46
81.25
80.38
70.80
79.91
80.78
81.65
79.43
78.33
74.37
82.04
78.96
82.67
77.14
83.30
80.54
80.06
81.41
74.60
71.19
79.59
80.93
79.12
77.30
81.80
78.56
83.14
82.43
80.69
80.22
79.75
71.49
79.27
82.28
81.56
1.600
1.607
1.607
1.636
1.647
1.656
1.658
1.667
1.667
1.667
1.667
1.672
1.675
1.680
1.690
1.698
1.714
1.727
1.750
1.750
1.750
1.763
1.765
1.767
1.775
1.778
1.778
1.786
1.786
1.800
1.800
1.818
1.853
1.861
1.867
1.867
1.867
1.868
1.875
1.875
1.875
1.893
1.905
1.909
1.920
1.969
1.971
1.972
1.972
1.974
2.000
2.000
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
1.14
DriveR
DriveN
No. of
grooves
No. of
grooves
50
28
56
22
34
32
38
30
36
45
48
67
40
25
42
53
28
22
32
36
80
38
34
30
40
45
63
28
42
25
50
22
34
36
30
60
75
38
32
40
48
28
42
22
25
32
34
36
71
38
25
28
80
45
90
36
56
53
63
50
60
75
80
112
67
42
71
90
48
38
56
63
140
67
60
53
71
80
112
50
75
45
90
40
63
67
56
112
140
71
60
75
90
53
80
42
48
63
67
71
140
75
50
56
Length Factor*
R
35
Table No. 5
8mm PITCH BELTS
Sprocket
Combinations
DriveN
Length Factor*
8MGT-1200
P.L 47.24
150 teeth
8MGT-1280
P.L 50.39
160 teeth
8MGT-1440
P.L 56.69
180 teeth
2.000
2.000
2.000
2.000
2.045
2.083
2.088
2.090
2.094
2.100
2.105
2.113
2.120
2.143
2.143
2.182
2.206
2.219
2.222
2.222
2.233
2.240
2.240
2.250
2.250
2.250
2.273
2.333
2.333
2.344
2.353
2.367
2.368
2.393
2.400
2.400
2.409
2.489
2.500
2.500
2.500
2.500
2.520
2.535
2.536
2.545
2.642
2.647
2.667
2.667
2.679
2.680
8MGT-1120
P.L 44.09
140 teeth
6.015
8.020
9.023
11.229
4.511
7.519
7.118
14.036
6.717
6.316
8.020
11.229
5.314
6.015
9.023
4.812
7.519
7.118
8.020
14.036
6.717
5.614
11.229
6.316
9.023
18.046
5.013
11.229
14.036
7.519
8.020
7.118
9.023
6.717
6.015
18.046
5.314
11.229
7.519
8.020
9.023
14.036
6.316
18.046
7.118
5.614
14.036
9.023
8.020
11.229
7.519
6.717
8MGT-1000
P.L 39.37
125 teeth
60
80
90
112
45
75
71
140
67
63
80
112
53
60
90
48
75
71
80
140
67
56
112
63
90
180
50
112
140
75
80
71
90
67
60
180
53
112
75
80
90
140
63
180
71
56
140
90
80
112
75
67
8MGT-896
P.L 35.28
112 teeth
3.008
4.010
4.511
5.614
2.206
3.609
3.409
6.717
3.208
3.008
3.810
5.314
2.506
2.807
4.211
2.206
3.409
3.208
3.609
6.316
3.008
2.506
5.013
2.807
4.010
8.020
2.206
4.812
6.015
3.208
3.409
3.008
3.810
2.807
2.506
7.519
2.206
4.511
3.008
3.208
3.609
5.614
2.506
7.118
2.807
2.206
5.314
3.409
3.008
4.211
2.807
2.506
8MGT-800
P.L 31.50
100 teeth
30
40
45
56
22
36
34
67
32
30
38
53
25
28
42
22
34
32
36
63
30
25
50
28
40
80
22
48
60
32
34
30
38
28
25
75
22
45
30
32
36
56
25
71
28
22
53
34
30
42
28
25
Speed
Ratio
8MGT-720
P.L 28.35
90 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
8MGT-640
P.L 25.20
80 teeth
DriveR
5.30
6.92
8.53
10.44
7.94
12.51
10.04
8.76
14.88
12.43
11.19
16.46
14.03
12.79
9.99
18.31
14.75
15.24
18.05
15.62
14.39
11.63
19.89
16.34
16.82
15.84
15.03
11.40
16.48
13.30
13.80
12.72
15.73
16.21
14.17
10.20
17.42
16.61
13.00
18.06
14.90
15.39
14.32
17.31
17.80
15.76
11.83
19.00
18.20
14.60
19.64
16.48
16.97
15.91
14.29
15.59
8.73
14.78
11.54
15.87
17.17
10.40
16.36
13.14
17.46
18.75
12.03
17.94
14.75
21.21
18.79
17.57
14.85
23.04
19.51
19.99
11.46
20.47
20.96
18.94
15.06
22.16
21.36
17.79
22.80
19.65
20.14
19.08
11.72
20.62
21.91
15.27
21.11
17.93
7.23
8.82
10.41
6.72
7.24
12.31
8.68
9.18
14.36
10.77
11.26
16.73
13.16
13.65
6.13
6.65
7.76
8.26
9.69
10.18
8.07
11.76
12.25
10.18
14.14
14.63
12.58
6.30
5.43
7.91
7.06
9.50
8.67
11.41
10.59
6.97
8.56
5.73
10.15
6.86
7.38
12.06
8.82
9.32
8.21
13.47
12.65
8.97
14.11
10.91
11.41
10.31
6.02
6.26
7.64
7.89
9.24
9.83
11.15
11.90
13.22
5.13
6.78
8.40
10.33
6.95
12.40
9.10
6.78
8.39
9.98
11.89
13.94
16.31
8.86
17.90
10.53
19.47
12.17
5.86
6.99
6.35
7.51
8.03
8.88
8.95
8.34
9.46
7.08
9.97
10.80
11.05
10.45
11.55
9.24
12.05
12.87
13.45
12.86
13.94
11.67
14.43
15.25
15.04
14.46
15.53
13.28
16.02
16.84
16.63
16.05
17.12
14.89
17.61
18.42
5.63
6.39
7.27
6.51
8.12
9.72
11.63
13.69
7.12
6.48
9.09
8.48
7.20
11.19
10.59
9.37
16.06
9.05
13.59
13.00
11.81
17.65
10.73
15.18
14.60
13.43
19.23
12.37
16.78
16.20
15.03
22.63
15.41
11.92
19.80
19.23
20.29
18.08
20.77
21.58
22.38
15.62
19.95
19.38
18.22
12.18
21.33
5.33
6.98
8.61
10.54
12.61
15.00
16.58
18.17
6.22
5.99
7.85
7.65
9.45
9.60
11.37
11.69
13.43
14.08
15.81
15.68
17.39
17.27
18.98
6.61
7.33
8.61
9.50
10.73
6.59
7.25
8.24
9.23
10.18
11.33
12.26
11.95
13.14
9.24
13.73
14.65
13.56
14.75
10.92
15.33
16.24
15.17
16.34
12.58
16.92
17.83
20.44
22.14
12.37
18.37
19.52
15.83
20.10
21.00
0.83
0.87
0.91
0.96
1.00
1.03
1.05
1.10
0.79
36
R
8mm PITCH BELTS
Sprocket
Combinations
8MGT-1600
P.L 62.99
200 teeth
8MGT-1792
P.L 70.55
224 teeth
8MGT-2000
P.L 78.74
250 teeth
8MGT-2240
P.L 88.19
280 teeth
8MGT-2400
P.L 94.49
300 teeth
8MGT-2520
P.L 99.21
315 teeth
8MGT-2840
P.L 111.81
355 teeth
8MGT-3200
P.L 125.98
400 teeth
8MGT-3600
P.L 141.73
450 teeth
8MGT-4000
P.L 157.48
500 teeth
8MGT-4480
P.L 176.38
560 teeth
Speed
Ratio
24.36
21.96
20.74
18.05
26.19
22.67
23.15
14.74
23.63
24.12
22.10
18.26
25.31
24.51
20.96
25.95
22.82
23.30
22.25
15.01
23.78
25.07
18.48
24.27
21.11
28.15
25.75
24.54
21.87
29.98
26.46
26.94
18.61
27.42
27.90
25.90
22.08
29.10
28.30
24.76
29.73
26.61
27.09
26.05
18.89
27.57
28.86
22.30
28.05
24.91
13.89
29.57
22.45
19.10
26.76
26.20
27.24
25.06
27.73
28.53
14.21
29.33
22.66
26.91
26.35
25.21
19.38
28.28
14.47
27.40
29.08
19.59
25.36
26.50
22.88
27.06
27.95
32.25
29.85
28.65
25.99
34.07
30.57
31.05
22.78
31.53
32.00
30.00
26.21
33.20
32.40
28.88
33.83
30.72
31.20
30.16
23.06
31.68
32.96
26.43
32.16
29.03
18.20
33.67
26.58
23.28
30.87
30.31
31.35
29.17
31.83
32.63
18.54
33.43
26.80
31.02
30.46
29.32
23.56
32.39
18.81
31.50
33.18
23.77
29.47
30.61
27.02
31.17
32.06
36.98
34.59
33.39
30.74
38.80
35.30
35.78
27.55
36.26
36.73
34.74
30.96
37.93
37.13
33.61
38.56
35.45
35.93
34.89
27.84
36.41
37.69
31.18
36.89
33.77
23.08
38.40
31.33
28.06
35.60
35.04
36.08
33.92
36.56
37.36
23.42
38.16
31.55
35.76
35.19
34.07
28.35
37.12
23.70
36.24
37.91
28.56
34.22
35.34
31.77
35.91
36.79
40.13
37.74
36.55
33.90
41.95
38.46
38.93
30.73
39.41
39.89
37.90
34.12
41.08
40.28
36.77
41.71
38.61
39.09
38.05
31.02
39.56
40.84
34.35
40.04
36.92
26.29
41.55
34.50
31.24
38.76
38.20
39.24
37.07
39.72
40.51
26.64
41.31
34.72
38.91
38.35
37.23
31.53
40.27
26.92
39.39
41.07
31.75
37.38
38.50
34.94
39.06
39.95
42.49
40.11
38.91
36.27
44.31
40.82
41.30
33.10
41.77
42.25
40.26
36.49
43.44
42.65
39.14
44.07
40.97
41.45
40.41
33.40
41.93
43.20
36.72
42.40
39.29
28.69
43.91
36.87
33.62
41.12
40.56
41.60
39.44
42.08
42.88
29.05
43.67
37.09
41.28
40.72
39.59
33.91
42.63
29.33
41.75
43.43
34.13
39.74
40.87
37.31
41.43
42.31
48.80
46.41
45.22
42.58
50.62
47.12
47.60
39.44
48.08
48.55
46.57
42.81
49.74
48.95
45.45
50.38
47.28
47.75
46.72
39.73
48.23
49.50
43.04
48.71
45.60
35.07
50.22
43.19
39.96
47.43
46.87
47.91
45.75
48.39
49.18
35.43
49.97
43.41
47.58
47.02
45.90
40.25
48.94
35.72
48.06
49.73
40.47
46.06
47.18
43.64
47.74
48.62
55.88
53.50
52.31
49.68
57.70
54.21
54.69
46.55
55.17
55.64
53.66
49.91
56.83
56.04
52.54
57.46
54.37
54.85
53.81
46.85
55.32
56.59
50.14
55.80
52.69
42.22
57.30
50.29
47.07
54.52
53.96
55.00
52.85
55.48
56.27
42.59
57.06
50.52
54.68
54.12
53.00
47.37
56.03
42.88
55.15
56.82
47.59
53.15
54.27
50.74
54.83
55.71
63.76
61.38
60.19
57.57
65.58
62.09
62.57
54.44
63.05
63.52
61.54
57.80
64.71
63.92
60.42
65.34
62.25
62.72
61.69
54.74
63.20
64.47
58.03
63.68
60.58
50.14
65.18
58.18
54.97
62.40
61.85
62.88
60.73
63.35
64.15
50.51
64.94
58.41
62.56
62.00
60.88
55.27
63.91
50.81
63.03
64.70
55.50
61.04
62.15
58.63
62.71
63.59
71.64
69.26
68.07
65.45
73.46
69.97
70.45
62.33
70.92
71.40
69.42
65.68
72.58
71.79
68.30
73.22
70.13
70.60
69.57
62.64
71.08
72.35
65.91
71.55
68.46
58.05
73.06
66.06
62.86
70.28
69.73
70.76
68.61
71.23
72.03
58.42
72.82
66.29
70.44
69.88
68.77
63.17
71.79
58.72
70.91
72.58
63.39
68.92
70.03
66.52
70.59
71.47
81.09
78.72
77.53
74.91
82.91
79.43
79.90
71.80
80.38
80.85
78.87
75.14
82.04
81.25
77.76
82.67
79.58
80.06
79.03
72.10
80.53
81.80
75.37
81.01
77.91
67.53
82.51
75.52
72.33
79.74
79.18
80.21
78.07
80.69
81.48
67.91
82.27
75.75
79.89
79.34
78.22
72.63
81.24
68.21
80.37
82.03
72.86
78.38
79.49
75.98
80.05
80.92
2.000
2.000
2.000
2.000
2.045
2.083
2.088
2.090
2.094
2.100
2.105
2.113
2.120
2.143
2.143
2.182
2.206
2.219
2.222
2.222
2.233
2.240
2.240
2.250
2.250
2.250
2.273
2.333
2.333
2.344
2.353
2.367
2.368
2.393
2.400
2.400
2.409
2.489
2.500
2.500
2.500
2.500
2.520
2.535
2.536
2.545
2.642
2.647
2.667
2.667
2.679
2.680
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
25.79
18.62
15.22
22.97
22.40
23.45
21.26
23.93
24.74
25.54
18.83
23.12
22.55
21.40
15.49
24.49
23.60
25.30
15.69
21.55
22.70
19.04
23.27
24.16
1.14
DriveR
DriveN
No. of
grooves
No. of
grooves
30
40
45
56
22
36
34
67
32
30
38
53
25
28
42
22
34
32
36
63
30
25
50
28
40
80
22
48
60
32
34
30
38
28
25
75
22
45
30
32
36
56
25
71
28
22
53
34
30
42
28
25
60
80
90
112
45
75
71
140
67
63
80
112
53
60
90
48
75
71
80
140
67
56
112
63
90
180
50
112
140
75
80
71
90
67
60
180
53
112
75
80
90
140
63
180
71
56
140
90
80
112
75
67
Length Factor*
R
37
Table No. 5
8mm PITCH BELTS
Sprocket
Combinations
DriveN
Length Factor*
8MGT-1200
P.L 47.24
150 teeth
8MGT-1280
P.L 50.39
160 teeth
8MGT-1440
P.L 56.69
180 teeth
2.687
2.727
2.800
2.800
2.800
2.813
2.840
2.857
2.857
2.864
2.917
2.947
2.987
3.000
3.000
3.000
3.045
3.111
3.111
3.155
3.200
3.214
3.214
3.227
3.294
3.333
3.343
3.396
3.409
3.500
3.500
3.556
3.600
3.600
3.636
3.684
3.733
3.733
3.750
3.889
4.000
4.000
4.000
4.091
4.118
4.226
4.286
4.375
4.480
4.480
4.500
4.667
8MGT-1120
P.L 44.09
140 teeth
18.046
6.015
11.229
14.036
22.457
9.023
7.118
8.020
18.046
6.316
14.036
11.229
22.457
7.519
9.023
18.046
6.717
11.229
14.036
22.457
8.020
9.023
18.046
7.118
11.229
14.036
22.457
18.046
7.519
11.229
14.036
22.457
9.023
18.046
8.020
14.036
11.229
22.457
18.046
14.036
11.229
18.046
22.457
9.023
14.036
22.457
18.046
14.036
11.229
22.457
18.046
14.036
8MGT-1000
P.L 39.37
125 teeth
180
60
112
140
224
90
71
80
180
63
140
112
224
75
90
180
67
112
140
224
80
90
180
71
112
140
224
180
75
112
140
224
90
180
80
140
112
224
180
140
112
180
224
90
140
224
180
140
112
224
180
140
8MGT-896
P.L 35.28
112 teeth
6.717
2.206
4.010
5.013
8.020
3.208
2.506
2.807
6.316
2.206
4.812
3.810
7.519
2.506
3.008
6.015
2.206
3.609
4.511
7.118
2.506
2.807
5.614
2.206
3.409
4.211
6.717
5.314
2.206
3.208
4.010
6.316
2.506
5.013
2.206
3.810
3.008
6.015
4.812
3.609
2.807
4.511
5.614
2.206
3.409
5.314
4.211
3.208
2.506
5.013
4.010
3.008
8MGT-800
P.L 31.50
100 teeth
67
22
40
50
80
32
25
28
63
22
48
38
75
25
30
60
22
36
45
71
25
28
56
22
34
42
67
53
22
32
40
63
25
50
22
38
30
60
48
36
28
45
56
22
34
53
42
32
25
50
40
30
Speed
Ratio
8MGT-720
P.L 28.35
90 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
8MGT-640
P.L 25.20
80 teeth
DriveR
5.83
7.47
9.09
11.02
13.09
15.47
9.37
17.06
11.06
18.64
12.71
21.81
15.97
12.56
6.18
7.85
6.74
7.46
9.81
8.75
9.64
11.90
10.87
12.09
14.30
13.28
13.70
15.89
14.89
15.31
17.48
16.49
18.51
20.66
19.67
7.19
8.82
10.75
12.83
15.21
16.80
18.39
9.50
11.19
12.84
21.55
12.69
16.10
5.52
5.08
5.75
7.45
9.43
7.59
11.54
9.77
13.95
12.22
15.54
13.84
17.14
15.45
20.32
18.65
6.79
8.44
10.39
12.47
14.87
9.63
16.46
11.32
18.05
12.98
21.22
16.24
12.89
6.93
8.94
7.71
11.07
9.90
13.50
12.36
15.10
13.98
16.70
15.59
19.89
18.80
6.37
8.05
10.01
12.11
14.51
9.75
16.11
11.45
17.70
13.11
9.57
20.88
16.38
13.08
5.93
7.65
9.63
11.75
14.16
9.88
15.76
11.58
17.35
13.24
9.69
20.53
16.52
13.21
7.90
10.10
12.57
14.19
15.80
19.01
9.14
11.28
13.70
15.31
10.01
11.71
16.91
9.81
13.38
20.10
13.34
16.65
7.43
10.13
11.84
9.93
13.51
13.46
16.79
10.30
12.77
14.40
16.01
10.05
19.22
13.59
7.61
10.32
12.03
10.17
13.71
13.72
16.99
10.29
13.85
1.05
1.10
7.12
5.92
0.79
0.83
0.87
8.09
0.91
0.96
1.00
1.03
38
R
8mm PITCH BELTS
Sprocket
Combinations
8MGT-4000
P.L 157.48
500 teeth
8MGT-4480
P.L 176.38
560 teeth
24.05
19.61
16.42
26.87
25.80
15.42
27.84
23.45
20.35
30.98
29.92
19.80
31.95
27.60
24.55
23.71
19.75
16.56
15.61
27.51
23.59
20.49
20.00
31.62
27.74
24.69
23.28
16.69
19.89
26.02
15.80
27.09
20.62
23.74
16.82
20.03
11.77
15.93
20.76
23.88
16.12
22.42
16.95
26.23
20.89
11.95
17.09
20.24
16.30
21.03
24.09
12.07
17.22
1.14
8MGT-3600
P.L 141.73
450 teeth
31.40
29.77
19.54
32.28
27.45
24.34
22.20
8MGT-3200
P.L 125.98
400 teeth
27.29
25.65
15.17
28.18
23.31
20.14
23.06
21.98
8MGT-2840
P.L 111.81
355 teeth
29.62
31.73
30.76
19.34
32.61
24.12
27.31
24.38
19.47
16.22
8MGT-2520
P.L 99.21
315 teeth
25.50
27.62
26.64
14.98
28.51
19.94
23.17
23.49
21.84
8MGT-2400
P.L 94.49
300 teeth
14.72
28.76
23.02
19.80
24.72
16.02
19.33
8MGT-2240
P.L 88.19
280 teeth
8MGT-1792
P.L 70.55
224 teeth
24.97
19.19
15.89
21.69
23.82
22.84
8MGT-2000
P.L 78.74
250 teeth
8MGT-1600
P.L 62.99
200 teeth
Speed
Ratio
19.07
32.86
27.16
23.98
16.43
21.17
30.14
20.20
31.20
24.83
27.88
14.63
20.33
24.97
28.03
20.53
14.87
30.36
25.10
15.04
20.72
25.24
28.25
15.22
20.85
25.38
23.97
37.59
31.92
28.78
18.75
34.37
36.46
35.50
24.25
37.35
28.92
32.07
19.07
36.13
34.51
24.45
37.02
32.22
29.14
19.32
35.72
34.66
24.73
36.69
32.36
29.35
19.58
24.93
36.36
32.51
29.49
19.83
34.89
25.13
35.95
29.64
32.65
20.02
25.27
29.78
32.80
25.47
20.27
35.11
29.92
20.46
25.68
30.06
33.02
20.65
25.81
30.20
27.20
40.74
35.09
31.97
22.12
37.53
39.62
38.65
27.48
40.50
32.11
35.24
22.45
39.29
37.68
27.69
40.17
35.39
32.33
22.71
38.88
37.83
27.97
39.85
35.53
32.54
22.97
28.18
39.52
35.68
32.69
23.23
38.05
28.38
39.11
32.83
35.83
23.43
28.52
32.97
35.97
28.73
23.68
38.27
33.12
23.88
28.93
33.26
36.19
24.07
29.07
33.40
29.61
43.11
37.46
34.35
24.60
39.89
41.98
41.02
29.89
42.86
34.49
37.61
24.93
41.66
40.04
30.10
42.54
37.76
34.71
25.20
41.25
40.19
30.38
42.21
37.91
34.93
25.47
30.59
41.88
38.05
35.07
25.73
40.42
30.80
41.47
35.22
38.20
25.93
30.94
35.36
38.35
31.15
26.19
40.64
35.51
26.39
31.36
35.65
38.57
26.59
31.50
35.79
36.01
49.41
43.79
40.69
31.13
46.21
48.29
47.33
36.30
49.17
40.84
43.94
31.47
47.97
46.36
36.51
48.84
44.09
41.06
31.75
47.56
46.51
36.80
48.52
44.24
41.28
32.02
37.01
48.19
44.38
41.43
32.29
46.74
37.22
47.79
41.57
44.53
32.50
37.36
41.72
44.68
37.58
32.77
46.96
41.87
32.97
37.79
42.01
44.91
33.18
37.93
42.16
43.17
56.50
50.89
47.82
38.37
53.30
55.38
54.42
43.46
56.26
47.96
51.04
38.72
55.06
53.46
43.68
55.94
51.19
48.19
39.01
54.65
53.61
43.97
55.61
51.34
48.41
39.29
44.18
55.29
51.49
48.56
39.57
53.84
44.40
54.88
48.71
51.64
39.78
44.55
48.85
51.79
44.76
40.05
54.06
49.00
40.26
44.98
49.15
52.02
40.47
45.12
49.29
51.10
64.38
58.79
55.72
46.37
61.19
63.26
62.31
51.40
64.14
55.87
58.94
46.72
62.94
61.34
51.62
63.82
59.09
56.10
47.01
62.54
61.50
51.91
63.49
59.24
56.32
47.30
52.13
63.17
59.39
56.47
47.58
61.72
52.35
62.77
56.62
59.54
47.79
52.49
56.77
59.69
52.71
48.08
61.95
56.92
48.29
52.93
57.06
59.92
48.50
53.08
57.21
59.02
72.26
66.67
63.62
54.32
69.07
71.14
70.19
59.32
72.02
63.77
66.83
54.69
70.82
69.23
59.54
71.70
66.98
64.00
54.98
70.42
69.38
59.83
71.37
67.13
64.22
55.27
60.06
71.05
67.28
64.37
55.55
69.61
60.28
70.65
64.52
67.43
55.77
60.42
64.67
67.58
60.65
56.06
69.84
64.82
56.27
60.87
64.97
67.81
56.49
61.01
65.12
68.51
81.71
76.14
73.09
63.84
78.53
80.60
79.64
68.81
81.47
73.24
76.29
64.21
80.28
78.68
69.03
81.15
76.44
73.47
64.51
79.88
78.84
69.33
80.83
76.59
73.70
64.80
69.55
80.51
76.75
73.85
65.09
79.07
69.77
80.11
74.00
76.90
65.31
69.92
74.15
77.05
70.15
65.60
79.30
74.30
65.82
70.37
74.45
77.28
66.04
70.52
74.60
2.687
2.727
2.800
2.800
2.800
2.813
2.840
2.857
2.857
2.864
2.917
2.947
2.987
3.000
3.000
3.000
3.045
3.111
3.111
3.155
3.200
3.214
3.214
3.227
3.294
3.333
3.343
3.396
3.409
3.500
3.500
3.556
3.600
3.600
3.636
3.684
3.733
3.733
3.750
3.889
4.000
4.000
4.000
4.091
4.118
4.226
4.286
4.375
4.480
4.480
4.500
4.667
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
DriveR
DriveN
No. of
grooves
No. of
grooves
67
22
40
50
80
32
25
28
63
22
48
38
75
25
30
60
22
36
45
71
25
28
56
22
34
42
67
53
22
32
40
63
25
50
22
38
30
60
48
36
28
45
56
22
34
53
42
32
25
50
40
30
180
60
112
140
224
90
71
80
180
63
140
112
224
75
90
180
67
112
140
224
80
90
180
71
112
140
224
180
75
112
140
224
90
180
80
140
112
224
180
140
112
180
224
90
140
224
180
140
112
224
180
140
Length Factor*
R
39
Table No. 5
8mm PITCH BELTS
Sprocket
Combinations
DriveN
224
180
224
140
180
112
180
224
140
224
180
224
180
224
140
180
224
224
180
224
224
180
224
224
22.457
18.046
22.457
14.036
18.046
11.229
18.046
22.457
14.036
22.457
18.046
22.457
18.046
22.457
14.036
18.046
22.457
22.457
18.046
22.457
22.457
18.046
22.457
22.457
Length Factor*
7.78
0.79
0.83
0.87
0.91
0.96
10.51
1.00
8MGT-1200
P.L 47.24
150 teeth
8MGT-1120
P.L 44.09
140 teeth
8MGT-1000
P.L 39.37
125 teeth
8MGT-896
P.L 35.28
112 teeth
8MGT-800
P.L 31.50
100 teeth
4.667
4.737
4.978
5.000
5.000
5.091
5.294
5.333
5.600
5.600
5.625
5.895
6.000
6.222
6.364
6.429
6.588
7.000
7.200
7.467
8.000
8.182
8.960
10.182
8MGT-1440
P.L 56.69
180 teeth
4.812
3.810
4.511
2.807
3.609
2.206
3.409
4.211
2.506
4.010
3.208
3.810
3.008
3.609
2.206
2.807
3.409
3.208
2.506
3.008
2.807
2.206
2.506
2.206
8MGT-1280
P.L 50.39
160 teeth
48
38
45
28
36
22
34
42
25
40
32
38
30
36
22
28
34
32
25
30
28
22
25
22
Speed
Ratio
8MGT-720
P.L 28.35
90 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
8MGT-640
P.L 25.20
80 teeth
DriveR
10.41
13.97
12.23
13.90
17.20
8.61
10.59
14.16
8.78
10.77
14.35
1.03
1.05
1.10
40
R
8mm PITCH BELTS
Sprocket
Combinations
12.65
17.05
17.74
12.77
21.71
17.18
12.94
17.36
13.12
17.55
1.14
1.18
8MGT-4480
P.L 176.38
560 teeth
16.93
8MGT-4000
P.L 157.48
500 teeth
12.53
8MGT-3600
P.L 141.73
450 teeth
21.51
8MGT-3200
P.L 125.98
400 teeth
17.55
8MGT-2840
P.L 111.81
355 teeth
21.30
16.68
24.30
16.80
8MGT-2520
P.L 99.21
315 teeth
17.35
12.30
20.44
12.42
8MGT-2400
P.L 94.49
300 teeth
16.55
8MGT-2240
P.L 88.19
280 teeth
8MGT-1792
P.L 70.55
224 teeth
12.18
8MGT-2000
P.L 78.74
250 teeth
8MGT-1600
P.L 62.99
200 teeth
Speed
Ratio
15.34
20.99
15.51
25.52
21.12
28.46
21.25
15.69
25.73
15.81
21.38
15.92
21.51
16.04
25.94
21.64
16.16
16.27
21.83
16.39
16.51
22.02
16.68
16.85
20.77
25.95
20.96
30.35
26.08
33.24
26.22
21.15
30.56
21.28
26.35
21.40
26.48
21.52
30.77
26.62
21.65
21.77
26.82
21.90
22.02
27.02
22.21
22.39
24.20
29.21
24.39
33.55
29.34
36.41
29.48
24.59
33.76
24.72
29.62
24.84
29.75
24.97
33.97
29.89
25.10
25.23
30.09
25.36
25.48
30.30
25.68
25.87
26.72
31.64
26.91
35.94
31.77
38.79
31.91
27.11
36.15
27.24
32.05
27.37
32.19
27.50
36.37
32.32
27.63
27.76
32.53
27.89
28.02
32.74
28.22
28.41
33.31
38.07
33.52
42.30
38.21
45.13
38.35
33.72
42.52
33.85
38.49
33.99
38.64
34.12
42.74
38.78
34.26
34.39
38.99
34.53
34.66
39.20
34.86
35.06
40.61
45.26
40.82
49.44
45.41
52.24
45.55
41.03
49.66
41.17
45.69
41.30
45.84
41.44
49.88
45.98
41.58
41.72
46.19
41.85
41.99
46.41
42.20
42.40
48.65
53.22
48.86
57.36
53.37
60.14
53.51
49.07
57.58
49.21
53.66
49.35
53.80
49.49
57.81
53.95
49.63
49.77
54.17
49.91
50.06
54.38
50.27
50.48
56.63
61.16
56.85
65.27
61.31
68.04
61.45
57.06
65.49
57.21
61.60
57.35
61.75
57.49
65.72
61.89
57.64
57.78
62.11
57.92
58.06
62.33
58.28
58.49
66.18
70.67
66.40
74.75
70.81
77.51
70.96
66.62
74.98
66.76
71.11
66.91
71.26
67.05
75.20
71.41
67.20
67.34
71.63
67.49
67.63
71.85
67.85
68.07
4.667
4.737
4.978
5.000
5.000
5.091
5.294
5.333
5.600
5.600
5.625
5.895
6.000
6.222
6.364
6.429
6.588
7.000
7.200
7.467
8.000
8.182
8.960
10.182
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
DriveR
DriveN
No. of
grooves
No. of
grooves
48
38
45
28
36
22
34
42
25
40
32
38
30
36
22
28
34
32
25
30
28
22
25
22
224
180
224
140
180
112
180
224
140
224
180
224
180
224
140
180
224
224
180
224
224
180
224
224
R
41
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
14MGT-1750
P.L 68.90
125 teeth
14MGT-1890
P.L 74.41
135 teeth
14MGT-1960
P.L 77.17
140 teeth
Length Factor*
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.026
1.026
1.027
1.028
1.029
1.029
1.030
1.031
1.032
1.033
1.034
1.036
1.042
1.047
1.050
1.053
1.054
1.056
1.056
1.057
1.057
1.059
1.060
1.060
1.061
1.063
1.063
14MGT-1568
P.L 61.73
112 teeth
4.912
5.088
5.263
5.439
5.614
5.790
5.965
6.141
6.316
6.492
6.667
6.842
7.018
7.544
7.895
8.421
8.772
9.299
9.825
10.527
11.053
11.755
12.457
13.158
14.036
6.842
7.018
6.667
6.492
6.141
6.316
5.965
5.790
5.614
5.439
5.263
5.088
8.772
7.895
11.053
7.018
6.842
6.667
13.158
6.492
9.825
6.316
9.299
12.457
6.141
5.965
11.755
14MGT-1400
P.L 55.12
100 teeth
28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
39
40
38
37
35
36
34
33
32
31
30
29
50
45
63
40
39
38
75
37
56
36
53
71
35
34
67
14MGT-1260
P.L 49.61
90 teeth
4.912
5.088
5.263
5.439
5.614
5.790
5.965
6.141
6.316
6.492
6.667
6.842
7.018
7.544
7.895
8.421
8.772
9.299
9.825
10.527
11.053
11.755
12.457
13.158
14.036
6.667
6.842
6.492
6.316
5.965
6.141
5.790
5.614
5.439
5.263
5.088
4.912
8.421
7.544
10.527
6.667
6.492
6.316
12.457
6.141
9.299
5.965
8.772
11.755
5.790
5.614
11.053
14MGT-1190
P.L 46.85
85 teeth
28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
38
39
37
36
34
35
33
32
31
30
29
28
48
43
60
38
37
36
71
35
53
34
50
67
33
32
63
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
11.85
11.57
11.30
11.02
10.75
10.47
10.20
9.92
9.64
9.37
9.09
8.82
8.54
14.33
14.05
13.78
13.50
13.23
12.95
12.68
12.40
12.12
11.85
11.57
11.30
11.02
10.19
9.64
15.71
15.43
15.16
14.88
14.61
14.33
14.06
13.78
13.50
13.23
12.95
12.68
12.40
11.57
11.02
10.20
9.65
17.09
16.81
16.54
16.26
15.99
15.71
15.44
15.16
14.88
14.61
14.33
14.06
13.78
12.95
12.40
11.58
11.03
10.20
19.84
19.57
19.29
19.02
18.74
18.47
18.19
17.91
17.64
17.36
17.09
16.81
16.54
15.71
15.16
14.33
13.78
12.95
12.13
23.15
22.87
22.60
22.32
22.05
21.77
21.50
21.22
20.94
20.67
20.39
20.12
19.84
19.01
18.46
17.64
17.09
16.26
15.43
14.33
13.50
26.73
26.46
26.18
25.91
25.63
25.36
25.08
24.80
24.53
24.25
23.98
23.70
23.43
22.60
22.05
21.22
20.67
19.84
19.02
17.91
17.09
15.99
14.88
21.49
21.77
12.95
23.84
23.56
24.11
24.39
24.94
24.67
25.22
25.49
25.77
26.04
26.32
26.60
20.95
22.32
17.50
23.70
23.98
24.25
14.33
24.53
19.43
24.80
20.26
15.43
25.08
25.36
16.53
29.49
29.21
28.94
28.66
28.39
28.11
27.84
27.56
27.28
27.01
26.73
26.46
26.18
25.35
24.80
23.98
23.43
22.60
21.77
20.67
19.84
18.74
17.64
16.54
15.16
26.59
26.32
26.87
27.15
27.70
27.42
27.97
28.25
28.52
28.80
29.08
29.35
23.70
25.08
20.25
26.46
26.73
27.01
17.08
27.28
22.18
27.56
23.01
18.19
27.83
28.11
19.29
30.87
30.59
30.32
30.04
29.77
29.49
29.22
28.94
28.66
28.39
28.11
27.84
27.56
26.73
26.18
25.36
24.81
23.98
23.15
22.05
21.22
20.12
19.02
17.92
16.54
27.97
27.70
28.25
28.53
29.08
28.80
29.35
29.63
29.90
30.18
30.46
30.73
25.08
26.46
21.63
27.84
28.11
28.39
18.46
28.66
23.56
28.94
24.39
19.57
29.21
29.49
20.67
8.95
8.68
9.23
9.51
10.06
9.78
10.33
10.61
10.88
11.16
11.44
11.71
11.43
11.16
11.71
11.99
12.54
12.26
12.81
13.09
13.36
13.64
13.92
14.19
9.92
12.81
12.54
13.09
13.37
13.92
13.64
14.19
14.47
14.74
15.02
15.30
15.57
9.92
11.30
14.19
13.92
14.47
14.75
15.30
15.02
15.57
15.85
16.12
16.40
16.68
16.95
11.30
12.68
16.95
16.67
17.22
17.50
18.05
17.78
18.33
18.60
18.88
19.15
19.43
19.71
14.06
15.43
8.82
9.09
9.37
11.30
11.57
11.85
12.68
12.95
13.23
14.06
14.33
14.61
16.81
17.09
17.36
20.25
19.98
20.53
20.81
21.36
21.08
21.63
21.91
22.18
22.46
22.74
23.01
17.36
18.74
13.91
20.12
20.39
20.67
9.64
12.12
13.50
14.88
9.92
12.40
13.78
15.16
10.61
17.64
12.54
17.91
13.36
20.94
15.84
21.22
16.67
10.19
10.47
12.67
12.95
14.05
14.33
15.43
15.71
18.19
18.47
0.68
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
42
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-2100
P.L 82.68
150 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2520
P.L 99.21
180 teeth
14MGT-2660
P.L 104.72
190 teeth
14MGT-2800
P.L 110.24
200 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
Speed
Ratio
33.62
33.35
33.07
32.80
32.52
32.25
31.97
31.69
31.42
31.14
30.87
30.59
30.32
29.49
28.94
28.11
27.56
26.73
25.91
24.80
23.98
22.88
21.77
20.67
19.29
30.73
30.45
31.00
31.28
31.83
31.56
32.11
32.38
32.66
32.93
33.21
33.49
27.84
29.21
24.39
30.59
30.87
31.14
21.22
31.42
26.32
31.69
27.15
22.32
31.97
32.25
23.42
36.38
36.10
35.83
35.55
35.28
35.00
34.73
34.45
34.17
33.90
33.62
33.35
33.07
32.24
31.69
30.87
30.32
29.49
28.66
27.56
26.73
25.63
24.53
23.43
22.05
33.48
33.21
33.76
34.04
34.59
34.31
34.86
35.14
35.41
35.69
35.97
36.24
30.59
31.97
27.14
33.35
33.62
33.90
23.97
34.17
29.07
34.45
29.90
25.08
34.72
35.00
26.18
39.13
38.86
38.58
38.31
38.03
37.76
37.48
37.20
36.93
36.65
36.38
36.10
35.83
35.00
34.45
33.62
33.07
32.24
31.42
30.31
29.49
28.39
27.28
26.18
24.80
36.24
35.96
36.51
36.79
37.34
37.07
37.62
37.89
38.17
38.44
38.72
39.00
33.35
34.72
29.90
36.10
36.38
36.65
26.73
36.93
31.83
37.20
32.66
27.83
37.48
37.76
28.93
41.89
41.61
41.34
41.06
40.79
40.51
40.24
39.96
39.68
39.41
39.13
38.86
38.58
37.75
37.20
36.38
35.83
35.00
34.17
33.07
32.24
31.14
30.04
28.94
27.56
38.99
38.72
39.27
39.55
40.10
39.82
40.37
40.65
40.92
41.20
41.48
41.75
36.10
37.48
32.66
38.86
39.13
39.41
29.48
39.68
34.58
39.96
35.41
30.59
40.23
40.51
31.69
44.64
44.37
44.09
43.82
43.54
43.27
42.99
42.71
42.44
42.16
41.89
41.61
41.34
40.51
39.96
39.13
38.58
37.75
36.93
35.82
35.00
33.90
32.79
31.69
30.31
41.75
41.47
42.02
42.30
42.85
42.58
43.13
43.40
43.68
43.95
44.23
44.51
38.86
40.23
35.41
41.61
41.89
42.16
32.24
42.44
37.34
42.71
38.17
33.34
42.99
43.27
34.44
47.40
47.13
46.85
46.58
46.30
46.03
45.75
45.47
45.20
44.92
44.65
44.37
44.10
43.27
42.72
41.89
41.34
40.51
39.69
38.58
37.76
36.66
35.55
34.45
33.07
44.51
44.23
44.78
45.06
45.61
45.34
45.89
46.16
46.44
46.71
46.99
47.27
41.62
42.99
38.17
44.37
44.65
44.92
35.00
45.20
40.10
45.47
40.93
36.10
45.75
46.03
37.20
54.01
53.74
53.46
53.19
52.91
52.64
52.36
52.08
51.81
51.53
51.26
50.98
50.71
49.88
49.33
48.50
47.95
47.12
46.30
45.19
44.37
43.27
42.16
41.06
39.68
51.12
50.84
51.39
51.67
52.22
51.95
52.50
52.77
53.05
53.32
53.60
53.88
48.23
49.60
44.78
50.98
51.26
51.53
41.61
51.81
46.71
52.08
47.54
42.71
52.36
52.64
43.82
57.32
57.05
56.77
56.50
56.22
55.95
55.67
55.39
55.12
54.84
54.57
54.29
54.02
53.19
52.64
51.81
51.26
50.43
49.61
48.50
47.68
46.58
45.47
44.37
42.99
54.43
54.15
54.70
54.98
55.53
55.26
55.81
56.08
56.36
56.63
56.91
57.19
51.54
52.91
48.09
54.29
54.57
54.84
44.92
55.12
50.02
55.39
50.85
46.02
55.67
55.95
47.13
61.18
60.90
60.63
60.35
60.08
59.80
59.53
59.25
58.97
58.70
58.42
58.15
57.87
57.04
56.49
55.67
55.12
54.29
53.46
52.36
51.53
50.43
49.33
48.23
46.85
58.28
58.01
58.56
58.84
59.39
59.11
59.66
59.94
60.21
60.49
60.77
61.04
55.39
56.77
51.95
58.15
58.42
58.70
48.78
58.97
53.87
59.25
54.70
49.88
59.52
59.80
50.98
69.45
69.17
68.90
68.62
68.35
68.07
67.80
67.52
67.24
66.97
66.69
66.42
66.14
65.31
64.76
63.94
63.39
62.56
61.73
60.63
59.80
58.70
57.60
56.50
55.12
66.55
66.28
66.83
67.11
67.66
67.38
67.93
68.21
68.48
68.76
69.04
69.31
63.66
65.04
60.22
66.42
66.69
66.97
57.05
67.24
62.14
67.52
62.97
58.15
67.79
68.07
59.25
79.09
78.82
78.54
78.27
77.99
77.72
77.44
77.16
76.89
76.61
76.34
76.06
75.79
74.96
74.41
73.58
73.03
72.20
71.38
70.27
69.45
68.35
67.24
66.14
64.76
76.20
75.92
76.47
76.75
77.30
77.03
77.58
77.85
78.13
78.40
78.68
78.96
73.31
74.68
69.86
76.06
76.34
76.61
66.69
76.89
71.79
77.16
72.62
67.79
77.44
77.72
68.90
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.026
1.026
1.027
1.028
1.029
1.029
1.030
1.031
1.032
1.033
1.034
1.036
1.042
1.047
1.050
1.053
1.054
1.056
1.056
1.057
1.057
1.059
1.060
1.060
1.061
1.063
1.063
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
0.96
DriveR
DriveN
No. of
grooves
No. of
grooves
28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
38
39
37
36
34
35
33
32
31
30
29
28
48
43
60
38
37
36
71
35
53
34
50
67
33
32
63
28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
39
40
38
37
35
36
34
33
32
31
30
29
50
45
63
40
39
38
75
37
56
36
53
71
35
34
67
Length Factor*
R
43
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
14MGT-1750
P.L 68.90
125 teeth
14MGT-1890
P.L 74.41
135 teeth
14MGT-1960
P.L 77.17
140 teeth
Length Factor*
1.065
1.067
1.067
1.067
1.069
1.071
1.071
1.075
1.081
1.083
1.086
1.088
1.091
1.094
1.097
1.100
1.103
1.103
1.104
1.107
1.111
1.111
1.114
1.116
1.117
1.118
1.119
1.120
1.121
1.125
1.125
1.125
1.125
1.127
1.127
1.129
1.132
1.132
1.133
1.138
1.143
1.143
1.147
1.152
1.154
1.156
1.161
1.162
1.163
1.167
1.167
1.172
14MGT-1568
P.L 61.73
112 teeth
5.790
5.614
8.421
14.036
5.439
5.263
10.527
7.544
7.018
6.842
6.667
6.492
6.316
6.141
5.965
5.790
5.614
7.544
9.299
5.439
7.018
8.772
6.842
8.421
11.755
6.667
13.158
9.825
6.492
6.316
7.895
11.053
15.790
12.457
14.036
6.141
7.544
10.527
5.965
5.790
5.614
7.018
6.842
6.667
7.895
6.492
6.316
7.544
8.772
6.141
9.825
5.965
14MGT-1400
P.L 55.12
100 teeth
33
32
48
80
31
30
60
43
40
39
38
37
36
35
34
33
32
43
53
31
40
50
39
48
67
38
75
56
37
36
45
63
90
71
80
35
43
60
34
33
32
40
39
38
45
37
36
43
50
35
56
34
14MGT-1260
P.L 49.61
90 teeth
5.439
5.263
7.895
13.158
5.088
4.912
9.825
7.018
6.492
6.316
6.141
5.965
5.790
5.614
5.439
5.263
5.088
6.842
8.421
4.912
6.316
7.895
6.141
7.544
10.527
5.965
11.755
8.772
5.790
5.614
7.018
9.825
14.036
11.053
12.457
5.439
6.667
9.299
5.263
5.088
4.912
6.141
5.965
5.790
6.842
5.614
5.439
6.492
7.544
5.263
8.421
5.088
14MGT-1190
P.L 46.85
85 teeth
31
30
45
75
29
28
56
40
37
36
35
34
33
32
31
30
29
39
48
28
36
45
35
43
60
34
67
50
33
32
40
56
80
63
71
31
38
53
30
29
28
35
34
33
39
32
31
37
43
30
48
29
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
10.74
11.02
13.22
13.50
9.23
14.60
14.88
10.61
15.98
16.26
11.99
18.74
19.02
14.74
22.05
22.32
18.05
25.63
25.91
21.63
28.39
28.66
24.39
15.84
28.94
29.21
21.22
25.77
26.59
26.87
27.14
27.42
27.70
27.97
28.25
28.52
28.80
25.90
23.28
29.07
26.73
24.11
27.01
24.66
19.70
27.28
17.62
22.59
27.56
27.83
25.49
20.80
29.77
30.04
25.77
17.22
30.32
30.59
22.60
27.15
27.97
28.25
28.52
28.80
29.08
29.35
29.63
29.90
30.18
27.28
24.66
30.45
28.11
25.49
28.39
26.04
21.08
28.66
19.01
23.97
28.94
29.21
26.87
22.18
11.30
11.57
13.78
14.05
15.16
15.43
16.54
16.81
8.12
8.95
9.23
9.50
9.78
10.05
10.33
10.61
10.88
11.16
8.26
10.60
11.43
11.71
11.98
12.26
12.53
12.81
13.09
13.36
13.64
10.74
11.99
12.81
13.09
13.36
13.64
13.91
14.19
14.47
14.74
15.02
12.12
11.43
9.09
13.91
11.57
9.36
11.84
9.50
15.29
12.95
10.33
13.22
10.88
13.37
14.19
14.47
14.74
15.02
15.29
15.57
15.85
16.12
16.40
13.50
10.88
16.67
14.33
11.71
14.60
12.26
19.29
19.57
11.57
16.12
16.95
17.22
17.50
17.77
18.05
18.33
18.60
18.88
19.15
16.26
13.64
19.43
17.08
14.46
17.36
15.01
9.64
12.12
13.50
14.88
17.64
22.60
22.87
14.88
19.43
20.25
20.53
20.80
21.08
21.36
21.63
21.91
22.18
22.46
19.56
16.94
22.73
20.39
17.77
20.67
18.32
13.35
20.94
9.91
10.19
12.39
12.67
10.32
13.77
14.05
11.70
10.19
15.15
15.43
13.09
12.94
17.91
18.19
15.84
11.15
16.25
21.22
21.49
19.15
14.45
26.18
26.46
18.46
23.01
23.84
24.11
24.39
24.66
24.94
25.22
25.49
25.77
26.04
23.15
20.53
26.32
23.97
21.36
24.25
21.91
16.94
24.53
14.87
19.84
24.80
25.08
22.73
18.04
20.11
17.76
29.49
27.42
23.01
29.76
30.04
30.32
28.25
28.52
28.80
27.01
29.07
29.35
27.56
25.76
29.63
24.24
29.90
0.94
15.97
14.74
15.98
16.26
16.53
14.46
14.74
15.01
13.22
15.29
15.57
13.77
11.97
15.84
10.45
16.12
18.46
16.39
11.97
18.74
19.01
19.29
17.22
17.50
17.77
15.98
18.05
18.32
16.53
14.73
18.60
13.21
18.87
21.77
19.70
15.28
22.04
22.32
22.60
20.53
20.80
21.08
19.28
21.35
21.63
19.83
18.04
21.90
16.52
22.18
25.35
23.28
18.87
25.63
25.90
26.18
24.11
24.39
24.66
22.87
24.94
25.21
23.42
21.63
25.49
20.11
25.77
18.73
16.38
28.11
26.04
21.62
28.38
28.66
28.94
26.87
27.14
27.42
25.63
27.69
27.97
26.18
24.38
28.24
22.86
28.52
0.75
0.77
0.81
0.85
0.89
0.92
10.46
8.39
12.95
10.87
14.33
12.26
15.71
13.64
10.74
11.02
11.29
9.22
9.50
9.77
10.60
13.22
13.50
13.77
11.70
11.98
12.25
10.46
12.53
12.81
11.01
9.21
13.08
14.60
14.88
15.15
13.08
13.36
13.63
11.84
13.91
14.19
12.39
10.59
14.46
10.88
13.36
0.68
0.73
10.05
10.32
8.52
44
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-2100
P.L 82.68
150 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2520
P.L 99.21
180 teeth
14MGT-2660
P.L 104.72
190 teeth
14MGT-2800
P.L 110.24
200 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
Speed
Ratio
32.52
32.80
28.52
19.98
33.07
33.35
25.35
29.90
30.73
31.00
31.28
31.56
31.83
32.11
32.38
32.66
32.93
30.04
27.42
33.21
30.87
28.25
31.14
28.80
23.83
31.42
21.76
26.73
31.69
31.97
29.62
24.93
17.89
22.86
20.52
32.24
30.18
25.76
32.52
32.79
33.07
31.00
31.28
31.55
29.76
31.83
32.10
30.31
28.52
32.38
27.00
32.66
35.28
35.55
31.28
22.73
35.83
36.10
28.11
32.66
33.48
33.76
34.03
34.31
34.59
34.86
35.14
35.41
35.69
32.79
30.17
35.96
33.62
31.00
33.90
31.55
26.59
34.17
24.52
29.48
34.45
34.72
32.38
27.69
20.65
25.62
23.27
35.00
32.93
28.52
35.27
35.55
35.83
33.76
34.03
34.31
32.52
34.58
34.86
33.07
31.27
35.14
29.76
35.41
38.03
38.31
34.03
25.49
38.58
38.86
30.86
35.41
36.24
36.51
36.79
37.07
37.34
37.62
37.89
38.17
38.44
35.55
32.93
38.72
36.38
33.76
36.65
34.31
29.34
36.93
27.27
32.24
37.20
37.48
35.13
30.45
23.41
28.38
26.03
37.75
35.69
31.27
38.03
38.30
38.58
36.51
36.79
37.06
35.27
37.34
37.62
35.82
34.03
37.89
32.51
38.17
40.79
41.06
36.79
28.24
41.34
41.61
33.62
38.17
38.99
39.27
39.54
39.82
40.10
40.37
40.65
40.92
41.20
38.30
35.69
41.47
39.13
36.51
39.41
37.06
32.10
39.68
30.03
34.99
39.96
40.23
37.89
33.20
26.17
31.13
28.79
40.51
38.44
34.03
40.79
41.06
41.34
39.27
39.54
39.82
38.03
40.09
40.37
38.58
36.79
40.65
35.27
40.92
43.54
43.82
39.54
31.00
44.09
44.37
36.37
40.92
41.75
42.02
42.30
42.58
42.85
43.13
43.40
43.68
43.95
41.06
38.44
44.23
41.89
39.27
42.16
39.82
34.85
42.44
32.79
37.75
42.71
42.99
40.64
35.96
28.92
33.89
31.54
43.26
41.20
36.78
43.54
43.82
44.09
42.02
42.30
42.57
40.78
42.85
43.13
41.33
39.54
43.40
38.02
43.68
46.30
46.58
42.30
33.76
46.85
47.13
39.13
43.68
44.51
44.78
45.06
45.34
45.61
45.89
46.16
46.44
46.71
43.82
41.20
46.99
44.65
42.03
44.92
42.58
37.61
45.20
35.55
40.51
45.47
45.75
43.41
38.72
31.68
36.65
34.30
46.02
43.96
39.54
46.30
46.58
46.85
44.78
45.06
45.33
43.54
45.61
45.89
44.09
42.30
46.16
40.78
46.44
52.91
53.19
48.91
40.37
53.46
53.74
45.74
50.29
51.12
51.40
51.67
51.95
52.22
52.50
52.77
53.05
53.32
50.43
47.81
53.60
51.26
48.64
51.53
49.19
44.23
51.81
42.16
47.12
52.08
52.36
50.02
45.33
38.29
43.26
40.91
52.63
50.57
46.15
52.91
53.19
53.46
51.39
51.67
51.94
50.15
52.22
52.50
50.70
48.91
52.77
47.39
53.05
56.22
56.50
52.22
43.68
56.77
57.05
49.05
53.60
54.43
54.71
54.98
55.26
55.53
55.81
56.08
56.36
56.63
53.74
51.12
56.91
54.57
51.95
54.84
52.50
47.54
55.12
45.47
50.43
55.39
55.67
53.33
48.64
41.61
46.57
44.23
55.94
53.88
49.46
56.22
56.50
56.77
54.70
54.98
55.25
53.46
55.53
55.81
54.01
52.22
56.08
50.70
56.36
60.08
60.35
56.08
47.53
60.63
60.90
52.91
57.46
58.28
58.56
58.84
59.11
59.39
59.66
59.94
60.21
60.49
57.60
54.98
60.76
58.42
55.80
58.70
56.35
51.39
58.97
49.32
54.29
59.25
59.52
57.18
52.49
45.46
50.43
48.08
59.80
57.73
53.32
60.08
60.35
60.63
58.56
58.83
59.11
57.32
59.39
59.66
57.87
56.08
59.94
54.56
60.21
68.35
68.62
64.35
55.81
68.90
69.17
61.18
65.73
66.55
66.83
67.11
67.38
67.66
67.93
68.21
68.48
68.76
65.87
63.25
69.03
66.69
64.07
66.97
64.62
59.66
67.24
57.59
62.56
67.52
67.79
65.45
60.76
53.73
58.70
56.35
68.07
66.00
61.59
68.35
68.62
68.90
66.83
67.10
67.38
65.59
67.66
67.93
66.14
64.35
68.21
62.83
68.48
77.99
78.27
73.99
65.45
78.54
78.82
70.82
75.37
76.20
76.48
76.75
77.03
77.30
77.58
77.85
78.13
78.40
75.51
72.89
78.68
76.34
73.72
76.61
74.27
69.31
76.89
67.24
72.20
77.16
77.44
75.10
70.41
63.38
68.34
66.00
77.71
75.65
71.24
77.99
78.27
78.54
76.47
76.75
77.03
75.23
77.30
77.58
75.78
73.99
77.85
72.48
78.13
1.065
1.067
1.067
1.067
1.069
1.071
1.071
1.075
1.081
1.083
1.086
1.088
1.091
1.094
1.097
1.100
1.103
1.103
1.104
1.107
1.111
1.111
1.114
1.116
1.117
1.118
1.119
1.120
1.121
1.125
1.125
1.125
1.125
1.127
1.127
1.129
1.132
1.132
1.133
1.138
1.143
1.143
1.147
1.152
1.154
1.156
1.161
1.162
1.163
1.167
1.167
1.172
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
0.96
DriveR
DriveN
No. of
grooves
No. of
grooves
31
30
45
75
29
28
56
40
37
36
35
34
33
32
31
30
29
39
48
28
36
45
35
43
60
34
67
50
33
32
40
56
80
63
71
31
38
53
30
29
28
35
34
33
39
32
31
37
43
30
48
29
33
32
48
80
31
30
60
43
40
39
38
37
36
35
34
33
32
43
53
31
40
50
39
48
67
38
75
56
37
36
45
63
90
71
80
35
43
60
34
33
32
40
39
38
45
37
36
43
50
35
56
34
Length Factor*
R
45
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
14.60
11.28
16.39
14.87
17.36
14.04
19.15
17.63
8.10
9.91
10.59
12.39
11.97
13.77
13.35
15.15
16.11
17.91
11.54
10.18
8.66
12.66
11.14
14.04
12.52
15.43
13.91
18.18
16.66
21.49
19.97
10.46
12.94
9.89
14.32
11.28
15.70
12.66
18.46
15.42
12.37
13.88
21.76
18.73
15.68
10.73
9.49
11.01
8.24
9.76
10.04
8.79
10.31
13.22
11.97
13.49
10.72
12.25
12.52
11.28
10.03
12.80
10.59
13.07
14.60
13.35
14.87
12.11
13.63
13.90
12.66
11.41
14.18
10.16
14.46
10.87
9.62
8.37
13.35
12.10
10.85
9.60
14.73
13.49
12.24
10.99
15.98
14.73
16.25
13.49
15.01
15.28
14.04
12.79
15.56
11.54
15.84
10.84
16.11
14.87
13.62
12.37
18.73
17.49
19.01
16.25
17.77
18.04
16.80
15.55
18.32
14.30
18.59
13.61
18.87
17.62
16.38
15.13
12.63
22.04
20.80
22.32
19.55
21.07
21.35
20.10
18.86
21.62
17.61
21.90
16.92
22.18
20.93
19.69
18.44
15.95
9.89
12.38
13.76
15.14
10.16
11.54
12.93
17.90
11.93
15.69
8.92
10.17
11.41
12.66
12.79
14.04
14.17
15.42
16.93
18.18
10.45
10.03
12.93
9.73
13.21
10.99
12.24
10.29
12.51
14.31
11.12
14.59
12.37
13.62
11.67
13.90
9.72
15.69
12.50
15.97
13.75
15.00
13.06
15.28
11.10
0.68
0.73
0.75
0.77
10.72
8.50
9.75
14MGT-1960
P.L 77.17
140 teeth
13.63
12.11
13.22
9.90
15.01
13.49
11.15
9.63
14MGT-1890
P.L 74.41
135 teeth
11.84
9.35
14MGT-1750
P.L 68.90
125 teeth
Length Factor*
1.176
1.178
1.179
1.182
1.183
1.184
1.188
1.189
1.190
1.194
1.194
1.194
1.196
1.200
1.200
1.200
1.200
1.207
1.212
1.214
1.216
1.219
1.226
1.229
1.231
1.233
1.233
1.241
1.244
1.250
1.250
1.250
1.250
1.250
1.250
1.258
1.260
1.263
1.264
1.265
1.267
1.268
1.268
1.270
1.276
1.282
1.286
1.286
1.290
1.297
1.300
1.302
14MGT-1568
P.L 61.73
112 teeth
7.018
9.299
5.790
6.842
12.457
7.895
6.667
11.053
13.158
6.492
7.544
14.036
11.755
6.316
8.421
10.527
15.790
6.141
7.018
5.965
7.895
6.842
6.667
7.544
8.421
6.492
9.299
6.316
9.825
6.141
7.018
7.895
8.772
10.527
13.158
6.842
11.053
8.421
11.755
7.544
6.667
12.457
15.790
14.036
6.492
8.772
6.316
7.895
7.018
8.421
6.842
9.825
14MGT-1400
P.L 55.12
100 teeth
40
53
33
39
71
45
38
63
75
37
43
80
67
36
48
60
90
35
40
34
45
39
38
43
48
37
53
36
56
35
40
45
50
60
75
39
63
48
67
43
38
71
90
80
37
50
36
45
40
48
39
56
14MGT-1260
P.L 49.61
90 teeth
5.965
7.895
4.912
5.790
10.527
6.667
5.614
9.299
11.053
5.439
6.316
11.755
9.825
5.263
7.018
8.772
13.158
5.088
5.790
4.912
6.492
5.614
5.439
6.141
6.842
5.263
7.544
5.088
7.895
4.912
5.614
6.316
7.018
8.421
10.527
5.439
8.772
6.667
9.299
5.965
5.263
9.825
12.457
11.053
5.088
6.842
4.912
6.141
5.439
6.492
5.263
7.544
14MGT-1190
P.L 46.85
85 teeth
34
45
28
33
60
38
32
53
63
31
36
67
56
30
40
50
75
29
33
28
37
32
31
35
39
30
43
29
45
28
32
36
40
48
60
31
50
38
53
34
30
56
71
63
29
39
28
35
31
37
30
43
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
20.66
17.35
22.46
20.94
12.78
19.42
21.21
14.85
24.25
20.93
26.04
24.52
16.37
23.00
24.80
18.44
15.40
25.07
23.56
14.15
17.47
25.35
22.31
19.27
27.00
23.69
28.80
27.28
19.13
25.76
27.55
21.20
18.16
27.83
26.31
16.91
20.23
28.11
25.07
22.03
21.21
15.25
18.99
14.28
20.24
21.48
13.30
25.63
24.38
25.90
23.14
24.66
24.93
23.69
22.45
25.21
21.20
25.49
20.51
25.76
24.52
23.28
22.03
19.54
15.79
24.79
18.84
22.58
17.87
23.83
25.07
16.90
18.45
15.27
18.73
16.51
17.76
15.82
18.04
13.87
21.76
18.58
22.04
19.82
21.07
19.13
21.34
17.19
14.67
25.35
22.17
25.62
23.41
24.65
22.72
24.93
20.78
28.38
27.14
28.66
25.90
27.42
27.69
26.45
25.21
27.97
23.96
28.24
23.27
28.52
27.27
26.03
24.79
22.30
18.56
27.55
21.60
25.34
20.63
26.58
27.83
19.66
14.93
17.44
28.10
24.92
28.38
26.17
27.41
25.47
27.69
23.54
28.38
25.07
30.18
28.66
20.51
27.14
28.93
22.58
19.54
29.21
27.69
18.29
21.61
29.49
26.45
23.41
15.79
29.76
28.52
30.04
27.28
28.80
29.07
27.83
26.59
29.35
25.34
29.62
24.65
29.90
28.66
27.41
26.17
23.68
19.94
28.93
22.99
26.72
22.01
27.96
29.21
21.04
16.31
18.82
29.48
26.30
29.76
27.55
28.79
26.86
29.07
24.92
0.81
0.85
0.89
0.92
0.94
46
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-2100
P.L 82.68
150 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2520
P.L 99.21
180 teeth
14MGT-2660
P.L 104.72
190 teeth
14MGT-2800
P.L 110.24
200 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
Speed
Ratio
31.14
27.83
32.93
31.41
23.27
29.90
31.69
25.34
22.30
31.97
30.45
21.05
24.37
32.24
29.21
26.17
18.56
32.52
31.27
32.79
30.03
31.55
31.83
30.58
29.34
32.10
28.10
32.38
27.41
32.65
31.41
30.17
28.93
26.44
22.70
31.69
25.74
29.48
24.77
30.72
31.96
23.80
19.08
21.58
32.24
29.06
32.51
30.30
31.55
29.61
31.82
27.67
33.89
30.58
35.69
34.17
26.03
32.65
34.45
28.10
25.06
34.72
33.20
23.81
27.13
35.00
31.96
28.92
21.32
35.27
34.03
35.55
32.79
34.31
34.58
33.34
32.10
34.86
30.85
35.13
30.16
35.41
34.17
32.92
31.68
29.19
25.46
34.44
28.50
32.23
27.53
33.48
34.72
26.56
21.85
24.34
34.99
31.82
35.27
33.06
34.30
32.37
34.58
30.43
36.65
33.34
38.44
36.93
28.78
35.41
37.20
30.85
27.81
37.48
35.96
26.57
29.89
37.75
34.72
31.68
24.08
38.03
36.79
38.30
35.54
37.06
37.34
36.10
34.85
37.61
33.61
37.89
32.92
38.16
36.92
35.68
34.44
31.95
28.22
37.20
31.26
34.99
30.29
36.23
37.47
29.32
24.61
27.10
37.75
34.57
38.03
35.82
37.06
35.12
37.33
33.19
39.40
36.09
41.20
39.68
31.54
38.16
39.96
33.61
30.57
40.23
38.71
29.33
32.64
40.51
37.47
34.44
26.84
40.78
39.54
41.06
38.30
39.82
40.09
38.85
37.61
40.37
36.37
40.64
35.67
40.92
39.68
38.44
37.19
34.71
30.97
39.95
34.02
37.74
33.05
38.99
40.23
32.08
27.37
29.86
40.50
37.33
40.78
38.57
39.81
37.88
40.09
35.95
42.16
38.85
43.95
42.44
34.29
40.92
42.71
36.37
33.33
42.99
41.47
32.08
35.40
43.26
40.23
37.19
29.60
43.54
42.30
43.81
41.05
42.57
42.85
41.61
40.36
43.12
39.12
43.40
38.43
43.67
42.43
41.19
39.95
37.46
33.73
42.71
36.77
40.50
35.80
41.74
42.98
34.83
30.13
32.62
43.26
40.09
43.54
41.33
42.57
40.64
42.85
38.70
44.92
41.61
46.71
45.20
37.06
43.68
45.47
39.13
36.09
45.75
44.23
34.85
38.16
46.02
42.99
39.95
32.36
46.30
45.06
46.57
43.81
45.33
45.61
44.37
43.13
45.88
41.88
46.16
41.19
46.43
45.19
43.95
42.71
40.22
36.49
45.47
39.53
43.26
38.56
44.50
45.74
37.60
32.89
35.38
46.02
42.85
46.30
44.09
45.33
43.40
45.61
41.46
51.53
48.22
53.32
51.81
43.67
50.29
52.08
45.74
42.70
52.36
50.84
41.46
44.77
52.63
49.60
46.56
38.97
52.91
51.67
53.18
50.43
51.94
52.22
50.98
49.74
52.49
48.49
52.77
47.80
53.05
51.80
50.56
49.32
46.84
43.11
52.08
46.15
49.87
45.18
51.11
52.36
44.21
39.51
42.00
52.63
49.46
52.91
50.70
51.94
50.01
52.22
48.07
54.84
51.53
56.63
55.12
46.98
53.60
55.39
49.05
46.01
55.67
54.15
44.77
48.08
55.94
52.91
49.87
42.28
56.22
54.98
56.49
53.74
55.25
55.53
54.29
53.05
55.80
51.80
56.08
51.11
56.36
55.11
53.87
52.63
50.15
46.42
55.39
49.46
53.18
48.49
54.42
55.67
47.52
42.82
45.31
55.94
52.77
56.22
54.01
55.25
53.32
55.53
51.39
58.70
55.39
60.49
58.97
50.83
57.45
59.25
52.90
49.87
59.52
58.01
48.63
51.94
59.80
56.76
53.73
46.14
60.07
58.83
60.35
57.59
59.11
59.38
58.14
56.90
59.66
55.66
59.94
54.97
60.21
58.97
57.73
56.49
54.00
50.28
59.25
53.31
57.04
52.34
58.28
59.52
51.38
46.68
49.17
59.80
56.62
60.07
57.86
59.11
57.17
59.38
55.24
66.97
63.66
68.76
67.24
59.11
65.73
67.52
61.17
58.14
67.79
66.28
56.90
60.21
68.07
65.04
62.00
54.41
68.34
67.10
68.62
65.86
67.38
67.65
66.41
65.17
67.93
63.93
68.21
63.24
68.48
67.24
66.00
64.76
62.27
58.55
67.52
61.58
65.31
60.62
66.55
67.79
59.65
54.95
57.44
68.07
64.89
68.34
66.14
67.38
65.45
67.65
63.51
76.61
73.30
78.40
76.89
68.75
75.37
77.16
70.82
67.79
77.44
75.92
66.54
69.85
77.71
74.68
71.65
64.06
77.99
76.75
78.27
75.51
77.02
77.30
76.06
74.82
77.58
73.58
77.85
72.89
78.13
76.89
75.64
74.40
71.92
68.20
77.16
71.23
74.95
70.26
76.20
77.44
69.30
64.60
67.09
77.71
74.54
77.99
75.78
77.02
75.09
77.30
73.16
1.176
1.178
1.179
1.182
1.183
1.184
1.188
1.189
1.190
1.194
1.194
1.194
1.196
1.200
1.200
1.200
1.200
1.207
1.212
1.214
1.216
1.219
1.226
1.229
1.231
1.233
1.233
1.241
1.244
1.250
1.250
1.250
1.250
1.250
1.250
1.258
1.260
1.263
1.264
1.265
1.267
1.268
1.268
1.270
1.276
1.282
1.286
1.286
1.290
1.297
1.300
1.302
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
0.96
DriveR
DriveN
No. of
grooves
No. of
grooves
34
45
28
33
60
38
32
53
63
31
36
67
56
30
40
50
75
29
33
28
37
32
31
35
39
30
43
29
45
28
32
36
40
48
60
31
50
38
53
34
30
56
71
63
29
39
28
35
31
37
30
43
40
53
33
39
71
45
38
63
75
37
43
80
67
36
48
60
90
35
40
34
45
39
38
43
48
37
53
36
56
35
40
45
50
60
75
39
63
48
67
43
38
71
90
80
37
50
36
45
40
48
39
56
Length Factor*
R
47
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
12.92
14.17
9.86
13.06
11.12
9.16
12.37
10.42
11.25
14.45
12.50
10.55
13.75
11.80
12.64
15.83
13.89
11.94
15.13
13.19
10.25
10.58
8.63
9.88
9.18
10.16
10.43
8.75
8.05
10.01
9.31
10.29
11.67
12.64
9.99
12.92
9.29
11.25
10.55
12.50
11.80
10.12
12.78
9.41
14.31
15.55
17.06
18.31
12.19
15.40
18.59
16.65
14.70
17.89
15.95
13.02
20.37
21.62
15.51
18.71
21.89
19.96
18.01
21.20
19.26
16.34
11.34
12.70
14.67
13.69
17.20
18.17
15.53
18.45
14.83
16.78
16.08
18.03
17.33
15.66
18.30
14.96
13.28
11.59
14.26
12.58
20.51
21.48
18.84
21.75
18.15
20.09
19.39
21.34
20.64
18.98
21.61
18.28
16.61
14.93
17.58
15.90
24.10
25.06
22.43
25.34
21.74
23.68
22.98
24.92
24.23
22.57
25.20
21.87
20.20
18.53
21.18
19.50
20.22
19.53
13.08
14.07
21.47
19.11
23.81
23.12
16.70
17.68
25.06
22.70
15.57
13.06
14.03
11.38
14.30
10.68
12.63
11.93
13.88
13.19
11.51
14.16
10.81
14.44
15.41
12.77
15.69
12.07
14.02
13.32
15.27
14.57
12.90
15.54
12.19
10.51
10.10
11.49
8.88
8.17
11.38
10.68
12.76
12.06
14.15
13.45
16.91
16.21
10.14
12.63
10.25
14.02
11.64
15.40
13.03
18.16
15.79
9.44
9.54
11.93
9.01
8.30
11.51
10.80
10.93
13.32
10.23
12.89
12.19
10.38
9.67
8.95
11.77
11.06
10.35
12.32
14.70
11.62
14.28
13.58
10.05
13.16
12.45
11.75
15.09
17.46
14.39
17.04
16.35
12.83
15.92
15.22
14.52
9.56
12.06
13.45
14.83
17.60
11.97
18.41
20.78
17.71
20.36
19.66
16.16
19.24
18.54
17.84
14.33
20.91
15.31
0.68
0.73
0.75
0.77
0.81
0.85
14MGT-1960
P.L 77.17
140 teeth
11.54
12.79
14MGT-1890
P.L 74.41
135 teeth
9.05
10.30
14MGT-1750
P.L 68.90
125 teeth
Length Factor*
1.303
1.310
1.313
1.316
1.321
1.324
1.325
1.333
1.333
1.333
1.333
1.339
1.340
1.340
1.343
1.344
1.345
1.351
1.357
1.359
1.364
1.371
1.379
1.387
1.389
1.393
1.395
1.395
1.396
1.400
1.400
1.400
1.406
1.412
1.415
1.420
1.429
1.429
1.429
1.429
1.432
1.433
1.436
1.452
1.455
1.465
1.471
1.472
1.474
1.479
1.483
1.489
14MGT-1568
P.L 61.73
112 teeth
7.544
6.667
11.053
8.772
6.492
7.895
9.299
7.018
8.421
10.527
14.036
13.158
11.755
12.457
15.790
7.544
6.842
8.772
6.667
9.299
7.895
8.421
7.018
7.544
8.772
6.842
9.299
10.527
11.755
9.825
11.053
19.650
7.895
8.421
13.158
12.457
7.018
8.772
14.036
15.790
9.299
7.544
9.825
7.895
8.421
11.053
8.772
9.299
9.825
12.457
7.544
11.755
14MGT-1400
P.L 55.12
100 teeth
43
38
63
50
37
45
53
40
48
60
80
75
67
71
90
43
39
50
38
53
45
48
40
43
50
39
53
60
67
56
63
112
45
48
75
71
40
50
80
90
53
43
56
45
48
63
50
53
56
71
43
67
14MGT-1260
P.L 49.61
90 teeth
5.790
5.088
8.421
6.667
4.912
5.965
7.018
5.263
6.316
7.895
10.527
9.825
8.772
9.299
11.755
5.614
5.088
6.492
4.912
6.842
5.790
6.141
5.088
5.439
6.316
4.912
6.667
7.544
8.421
7.018
7.895
14.036
5.614
5.965
9.299
8.772
4.912
6.141
9.825
11.053
6.492
5.263
6.842
5.439
5.790
7.544
5.965
6.316
6.667
8.421
5.088
7.895
14MGT-1190
P.L 46.85
85 teeth
33
29
48
38
28
34
40
30
36
45
60
56
50
53
67
32
29
37
28
39
33
35
29
31
36
28
38
43
48
40
45
80
32
34
53
50
28
35
56
63
37
30
39
31
33
43
34
36
38
48
29
45
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
23.96
25.21
19.11
22.30
25.48
23.54
21.60
24.79
22.85
19.94
15.06
16.31
18.27
17.29
26.72
27.96
21.87
25.06
28.24
26.30
24.36
27.55
25.61
22.70
17.83
19.08
21.03
20.06
15.44
26.85
27.82
25.19
28.10
24.50
26.44
25.74
27.68
26.99
25.33
27.96
24.63
22.96
21.29
23.94
22.27
28.10
29.34
23.25
26.44
29.62
27.68
25.74
28.93
26.99
24.08
19.21
20.47
22.41
21.44
16.83
28.23
29.20
26.57
29.48
25.88
27.82
27.12
29.06
28.37
26.71
29.34
26.01
24.35
22.68
25.32
23.65
22.00
24.36
21.31
23.95
23.25
19.77
22.83
22.14
21.44
17.94
24.50
18.92
26.57
25.88
19.47
20.45
27.82
25.46
18.34
15.95
24.76
27.12
24.07
26.70
26.01
22.53
25.59
24.90
24.20
20.71
27.26
21.69
27.95
27.26
20.86
21.83
29.20
26.84
19.73
17.34
26.15
28.50
25.45
28.09
27.39
23.91
26.97
26.28
25.58
22.10
28.64
23.07
0.89
0.92
0.94
48
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-2100
P.L 82.68
150 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2520
P.L 99.21
180 teeth
14MGT-2660
P.L 104.72
190 teeth
14MGT-2800
P.L 110.24
200 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
Speed
Ratio
30.86
32.10
26.01
29.20
32.37
30.44
28.50
31.68
29.75
26.84
21.98
23.23
25.17
24.20
19.60
30.99
31.96
29.33
32.23
28.64
30.57
29.88
31.82
31.13
29.46
32.09
28.77
27.11
25.44
28.08
26.41
33.61
34.85
28.77
31.95
35.13
33.20
31.26
34.44
32.50
29.60
24.74
25.99
27.93
26.96
22.37
33.75
34.71
32.09
34.99
31.39
33.33
32.64
34.57
33.88
32.22
34.85
31.53
29.86
28.20
30.83
29.17
17.41
33.47
32.77
26.39
27.36
34.71
32.36
25.27
22.89
31.66
34.02
30.97
33.60
32.91
29.44
32.49
31.80
31.10
27.62
34.15
28.60
36.37
37.61
31.53
34.71
37.89
35.95
34.02
37.19
35.26
32.35
27.50
28.75
30.69
29.72
25.14
36.50
37.47
34.84
37.75
34.15
36.09
35.39
37.33
36.64
34.98
37.61
34.29
32.62
30.96
33.59
31.93
20.20
36.22
35.53
29.15
30.12
37.47
35.11
28.03
25.66
34.42
36.77
33.73
36.36
35.66
32.20
35.25
34.55
33.86
30.39
36.91
31.36
39.12
40.36
34.28
37.46
40.64
38.71
36.77
39.95
38.02
35.11
30.26
31.51
33.45
32.48
27.90
39.26
40.23
37.60
40.50
36.91
38.84
38.15
40.09
39.39
37.73
40.36
37.04
35.38
33.72
36.35
34.69
22.98
38.98
38.29
31.91
32.88
40.22
37.87
30.79
28.42
37.18
39.53
36.48
39.11
38.42
34.95
38.00
37.31
36.62
33.15
39.66
34.12
41.88
43.12
37.04
40.22
43.40
41.46
39.53
42.71
40.77
37.87
33.02
34.27
36.21
35.24
30.66
42.01
42.98
40.36
43.26
39.66
41.60
40.91
42.84
42.15
40.49
43.12
39.80
38.14
36.48
39.11
37.44
25.75
41.73
41.04
34.67
35.64
42.98
40.63
33.55
31.19
39.93
42.29
39.24
41.87
41.18
37.71
40.76
40.07
39.38
35.91
42.42
36.88
44.64
45.88
39.80
42.98
46.16
44.22
42.29
45.47
43.53
40.63
35.79
37.03
38.97
38.00
33.43
44.78
45.74
43.12
46.02
42.43
44.36
43.67
45.60
44.91
43.25
45.88
42.56
40.90
39.24
41.87
40.21
28.52
44.50
43.80
37.43
38.40
45.74
43.39
36.32
33.95
42.69
45.05
42.00
44.63
43.94
40.48
43.52
42.83
42.14
38.67
45.18
39.64
51.25
52.49
46.42
49.59
52.77
50.84
48.90
52.08
50.14
47.24
42.40
43.65
45.58
44.61
40.05
51.39
52.35
49.73
52.63
49.04
50.97
50.28
52.21
51.52
49.86
52.49
49.17
47.51
45.85
48.48
46.82
35.16
51.11
50.42
44.05
45.02
52.35
50.00
42.94
40.58
49.31
51.66
48.62
51.24
50.55
47.09
50.14
49.44
48.75
45.29
51.79
46.26
54.56
55.80
49.73
52.90
56.08
54.15
52.21
55.39
53.46
50.55
45.71
46.96
48.90
47.93
43.36
54.70
55.66
53.04
55.94
52.35
54.28
53.59
55.52
54.83
53.18
55.80
52.48
50.83
49.17
51.79
50.13
38.48
54.42
53.73
47.36
48.33
55.66
53.31
46.25
43.89
52.62
54.97
51.93
54.55
53.86
50.40
53.45
52.75
52.06
48.60
55.11
49.57
58.42
59.66
53.58
56.76
59.93
58.00
56.07
59.24
57.31
54.41
49.57
50.82
52.75
51.78
47.22
58.55
59.52
56.90
59.79
56.20
58.14
57.45
59.38
58.69
57.03
59.66
56.34
54.68
53.02
55.65
53.99
42.35
58.27
57.58
51.22
52.19
59.52
57.17
50.11
47.75
56.48
58.83
55.78
58.41
57.72
54.26
57.30
56.61
55.92
52.46
58.96
53.43
66.69
67.93
61.86
65.03
68.20
66.27
64.34
67.51
65.58
62.68
57.85
59.09
61.02
60.06
55.49
66.82
67.79
65.17
68.07
64.48
66.41
65.72
67.65
66.96
65.30
67.93
64.61
62.95
61.30
63.92
62.26
50.63
66.55
65.85
59.50
60.46
67.79
65.44
58.39
56.03
64.75
67.10
64.06
66.68
65.99
62.53
65.58
64.88
64.19
60.73
67.23
61.70
76.33
77.57
71.50
74.68
77.85
75.92
73.99
77.16
75.23
72.33
67.50
68.74
70.67
69.70
65.14
76.47
77.44
74.81
77.71
74.12
76.05
75.36
77.30
76.61
74.95
77.57
74.26
72.60
70.94
73.57
71.91
60.29
76.19
75.50
69.15
70.11
77.43
75.09
68.04
65.68
74.39
76.74
73.70
76.33
75.64
72.18
75.22
74.53
73.84
70.38
76.88
71.35
1.303
1.310
1.313
1.316
1.321
1.324
1.325
1.333
1.333
1.333
1.333
1.339
1.340
1.340
1.343
1.344
1.345
1.351
1.357
1.359
1.364
1.371
1.379
1.387
1.389
1.393
1.395
1.395
1.396
1.400
1.400
1.400
1.406
1.412
1.415
1.420
1.429
1.429
1.429
1.429
1.432
1.433
1.436
1.452
1.455
1.465
1.471
1.472
1.474
1.479
1.483
1.489
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
30.71
30.02
23.62
24.60
31.95
29.60
22.50
20.12
28.90
31.26
28.21
30.84
30.15
26.68
29.73
29.04
28.34
24.86
31.39
25.83
0.96
DriveR
DriveN
No. of
grooves
No. of
grooves
33
29
48
38
28
34
40
30
36
45
60
56
50
53
67
32
29
37
28
39
33
35
29
31
36
28
38
43
48
40
45
80
32
34
53
50
28
35
56
63
37
30
39
31
33
43
34
36
38
48
29
45
43
38
63
50
37
45
53
40
48
60
80
75
67
71
90
43
39
50
38
53
45
48
40
43
50
39
53
60
67
56
63
112
45
48
75
71
40
50
80
90
53
43
56
45
48
63
50
53
56
71
43
67
Length Factor*
R
49
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
13.02
12.32
9.48
14.41
13.71
10.88
17.18
16.48
13.67
7.99
9.69
9.79
9.08
10.50
12.19
11.06
11.76
9.20
11.19
10.48
11.89
13.58
9.61
12.45
13.15
10.60
12.58
11.87
13.28
14.96
11.01
13.84
14.54
12.00
9.92
10.63
11.31
12.02
12.71
13.41
15.35
14.65
16.05
17.73
13.80
16.61
17.31
14.78
12.22
15.48
16.18
10.42
13.21
18.67
17.97
19.37
21.04
17.12
19.92
20.62
18.10
15.56
18.80
19.50
13.71
16.55
11.19
9.32
9.73
12.58
10.73
11.13
13.97
12.13
11.35
13.92
16.74
14.91
9.39
10.04
11.89
11.44
13.28
12.83
14.67
15.61
17.44
8.23
10.75
12.15
9.45
9.85
10.85
13.54
10.54
11.26
12.25
8.80
11.31
10.16
12.71
11.57
8.36
10.88
12.28
9.97
14.10
12.96
10.66
13.67
11.38
16.31
13.34
14.05
15.03
11.59
16.87
15.74
13.46
16.44
14.17
19.63
16.68
17.38
18.36
14.95
20.19
19.06
16.80
19.76
17.51
14.08
12.92
9.57
10.98
12.38
12.59
15.16
15.94
18.49
8.92
10.29
11.44
11.69
12.83
10.09
10.78
13.09
14.22
11.50
8.48
11.00
12.40
13.80
13.59
15.87
17.00
14.30
12.72
16.57
0.68
0.73
0.75
0.77
0.81
8.67
14MGT-1960
P.L 77.17
140 teeth
11.64
10.93
8.11
14MGT-1890
P.L 74.41
135 teeth
9.14
8.42
8.55
9.26
14MGT-1750
P.L 68.90
125 teeth
Length Factor*
1.493
1.500
1.500
1.500
1.500
1.500
1.509
1.514
1.514
1.515
1.536
1.538
1.548
1.552
1.556
1.558
1.559
1.563
1.563
1.575
1.577
1.578
1.579
1.600
1.600
1.600
1.606
1.607
1.607
1.613
1.615
1.622
1.647
1.651
1.655
1.656
1.658
1.667
1.667
1.667
1.667
1.672
1.675
1.697
1.698
1.703
1.710
1.714
1.714
1.718
1.724
1.744
14MGT-1568
P.L 61.73
112 teeth
19.650
7.895
8.421
10.527
13.158
15.790
14.036
9.299
9.825
8.772
7.544
10.527
8.421
7.895
9.825
11.755
9.299
8.772
13.158
11.053
19.650
12.457
10.527
8.421
9.825
14.036
9.299
7.895
15.790
8.772
11.053
10.527
9.825
12.457
8.421
9.299
11.053
8.772
10.527
13.158
14.036
19.650
11.755
9.825
15.790
11.053
9.299
8.421
10.527
11.755
8.772
13.158
14MGT-1400
P.L 55.12
100 teeth
112
45
48
60
75
90
80
53
56
50
43
60
48
45
56
67
53
50
75
63
112
71
60
48
56
80
53
45
90
50
63
60
56
71
48
53
63
50
60
75
80
112
67
56
90
63
53
48
60
67
50
75
14MGT-1260
P.L 49.61
90 teeth
13.158
5.263
5.614
7.018
8.772
10.527
9.299
6.141
6.492
5.790
4.912
6.842
5.439
5.088
6.316
7.544
5.965
5.614
8.421
7.018
12.457
7.895
6.667
5.263
6.141
8.772
5.790
4.912
9.825
5.439
6.842
6.492
5.965
7.544
5.088
5.614
6.667
5.263
6.316
7.895
8.421
11.755
7.018
5.790
9.299
6.492
5.439
4.912
6.141
6.842
5.088
7.544
14MGT-1190
P.L 46.85
85 teeth
75
30
32
40
50
60
53
35
37
33
28
39
31
29
36
43
34
32
48
40
71
45
38
30
35
50
33
28
56
31
39
37
34
43
29
32
38
30
36
45
48
67
40
33
53
37
31
28
35
39
29
43
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
20.49
19.79
16.99
13.46
24.08
23.38
20.60
17.09
13.52
15.95
22.27
21.57
22.96
24.63
20.73
23.52
24.21
21.70
19.18
22.40
23.10
17.34
20.16
26.84
26.14
23.36
19.86
16.32
18.73
25.03
24.33
25.72
27.39
23.49
26.28
26.97
24.46
21.95
25.16
25.86
20.12
22.92
28.22
27.53
24.74
21.25
17.72
20.12
26.41
25.72
27.11
28.77
24.88
27.66
28.35
25.85
23.33
26.54
27.24
21.51
24.31
18.32
20.86
23.65
21.83
16.32
22.53
24.35
14.01
23.23
20.29
20.99
21.96
18.58
23.78
22.66
20.41
23.36
21.12
17.72
16.57
21.10
23.62
26.41
24.60
19.11
25.29
27.11
16.82
25.99
23.05
23.75
24.73
21.35
26.54
25.43
23.18
26.12
23.88
20.50
19.36
22.48
25.01
27.79
25.98
20.50
26.68
28.49
18.22
27.37
24.44
25.14
26.11
22.74
27.93
26.81
24.57
27.51
25.27
21.89
20.76
16.93
19.19
20.32
17.64
16.07
19.89
14.33
19.56
22.09
14.38
20.54
22.79
23.91
21.25
19.69
23.49
17.97
22.34
24.86
17.19
23.31
25.56
26.68
24.01
22.46
26.25
20.76
23.72
26.24
18.60
24.70
26.94
28.06
25.40
23.85
27.64
22.15
0.85
0.89
0.92
0.94
14.70
17.25
20.06
18.23
12.68
18.93
20.75
50
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-2660
P.L 104.72
190 teeth
14MGT-2800
P.L 110.24
200 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
0.96
14MGT-2520
P.L 99.21
180 teeth
25.25
27.77
30.55
28.74
23.28
29.44
31.25
21.01
30.13
27.20
27.90
28.87
25.51
30.68
29.57
27.33
30.27
28.03
24.66
23.53
16.19
26.49
29.01
21.39
27.47
29.70
30.82
28.16
26.62
30.40
24.92
14MGT-2380
P.L 93.70
170 teeth
30.98
30.28
27.50
24.02
20.50
22.89
29.17
28.48
29.87
31.53
27.64
30.42
31.11
28.61
26.10
29.30
30.00
24.28
27.07
14MGT-2240
P.L 88.19
160 teeth
14MGT-2100
P.L 82.68
150 teeth
Speed
Ratio
18.03
33.74
33.04
30.26
26.78
23.28
25.66
31.93
31.24
32.62
34.29
30.40
33.18
33.87
31.37
28.86
32.06
32.76
27.04
29.83
18.53
28.02
30.53
33.31
31.50
26.05
32.20
34.00
23.79
32.89
29.97
30.66
31.63
28.28
33.44
32.33
30.10
33.03
30.79
27.43
26.31
19.02
29.25
31.77
24.17
30.23
32.46
33.58
30.93
29.39
33.16
27.69
20.83
36.49
35.80
33.02
29.54
26.05
28.42
34.69
33.99
35.38
37.04
33.16
35.93
36.63
34.13
31.62
34.82
35.52
29.81
32.59
21.33
30.78
33.29
36.07
34.26
28.82
34.96
36.76
26.56
35.65
32.73
33.42
34.39
31.04
36.20
35.09
32.86
35.78
33.56
30.20
29.08
21.83
32.02
34.53
26.95
32.99
35.22
36.34
33.69
32.15
35.92
30.46
23.61
39.25
38.56
35.78
32.31
28.82
31.19
37.45
36.75
38.14
39.80
35.92
38.69
39.38
36.89
34.38
37.58
38.27
32.57
35.35
24.12
33.54
36.05
38.83
37.02
31.58
37.71
39.52
29.34
38.41
35.49
36.18
37.15
33.81
38.96
37.85
35.62
38.54
36.32
32.96
31.84
24.62
34.78
37.29
29.72
35.75
37.98
39.09
36.45
34.91
38.68
33.23
26.39
42.01
41.31
38.54
35.07
31.58
33.95
40.20
39.51
40.90
42.56
38.67
41.45
42.14
39.64
37.14
40.34
41.03
35.33
38.11
26.90
36.30
38.81
41.58
39.78
34.35
40.47
42.28
32.10
41.16
38.25
38.94
39.91
36.57
41.72
40.61
38.38
41.30
39.07
35.73
34.61
27.41
37.54
40.05
32.49
38.51
40.74
41.85
39.21
37.67
41.43
35.99
29.17
44.77
44.07
41.30
37.83
34.35
36.72
42.96
42.27
43.66
45.32
41.44
44.21
44.90
42.41
39.91
43.10
43.79
38.10
40.88
29.69
39.07
41.57
44.34
42.54
37.11
43.23
45.04
34.87
43.93
41.01
41.70
42.67
39.33
44.48
43.37
41.14
44.06
41.84
38.50
37.38
30.20
40.31
42.81
35.27
41.28
43.50
44.61
41.97
40.44
44.20
38.76
35.82
51.38
50.69
47.92
44.45
40.98
43.34
49.58
48.89
50.27
51.93
48.05
50.82
51.51
49.02
46.52
49.71
50.41
44.72
47.49
36.34
45.69
48.19
50.96
49.16
43.74
49.85
51.65
41.50
50.54
47.63
48.32
49.29
45.96
51.09
49.98
47.76
50.68
48.46
45.12
44.00
36.85
46.93
49.42
41.90
47.90
50.12
51.23
48.59
47.06
50.81
45.38
39.14
54.69
54.00
51.23
47.77
44.29
46.65
52.89
52.20
53.58
55.24
51.37
54.13
54.83
52.33
49.84
53.03
53.72
48.03
50.81
39.66
49.00
51.50
54.27
52.47
47.05
53.16
54.96
44.82
53.85
50.94
51.63
52.60
49.27
54.40
53.30
51.08
53.99
51.77
48.43
47.32
40.18
50.24
52.74
45.22
51.21
53.43
54.54
51.90
50.37
54.12
48.70
43.01
58.55
57.85
55.09
51.62
48.15
50.51
56.75
56.05
57.44
59.10
55.22
57.99
58.68
56.19
53.70
56.88
57.57
51.89
54.66
43.53
52.86
55.36
58.13
56.33
50.91
57.02
58.82
48.69
57.71
54.80
55.49
56.46
53.13
58.26
57.15
54.93
57.85
55.63
52.29
51.18
44.05
54.10
56.60
49.08
55.07
57.29
58.40
55.76
54.23
57.98
52.56
51.29
66.82
66.13
63.36
59.90
56.43
58.79
65.02
64.33
65.71
67.37
63.50
66.26
66.95
64.46
61.97
65.16
65.85
60.17
62.94
51.82
61.14
63.63
66.40
64.60
59.19
65.29
67.09
56.97
65.98
63.08
63.77
64.73
61.41
66.53
65.43
63.21
66.12
63.90
60.57
59.46
52.35
62.38
64.87
57.37
63.34
65.56
66.67
64.04
62.51
66.25
60.84
60.96
76.46
75.77
73.01
69.55
66.09
68.44
74.67
73.98
75.36
77.02
73.15
75.91
76.60
74.11
71.62
74.80
75.49
69.82
72.59
61.49
70.79
73.28
76.05
74.25
68.85
74.94
76.74
66.63
75.63
72.72
73.42
74.38
71.06
76.18
75.07
72.86
75.77
73.55
70.23
69.12
62.02
72.03
74.52
67.03
72.99
75.21
76.32
73.69
72.16
75.90
70.49
1.493
1.500
1.500
1.500
1.500
1.500
1.509
1.514
1.514
1.515
1.536
1.538
1.548
1.552
1.556
1.558
1.559
1.563
1.563
1.575
1.577
1.578
1.579
1.600
1.600
1.600
1.606
1.607
1.607
1.613
1.615
1.622
1.647
1.651
1.655
1.656
1.658
1.667
1.667
1.667
1.667
1.672
1.675
1.697
1.698
1.703
1.710
1.714
1.714
1.718
1.724
1.744
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
DriveR
DriveN
No. of
grooves
No. of
grooves
75
30
32
40
50
60
53
35
37
33
28
39
31
29
36
43
34
32
48
40
71
45
38
30
35
50
33
28
56
31
39
37
34
43
29
32
38
30
36
45
48
67
40
33
53
37
31
28
35
39
29
43
112
45
48
60
75
90
80
53
56
50
43
60
48
45
56
67
53
50
75
63
112
71
60
48
56
80
53
45
90
50
63
60
56
71
48
53
63
50
60
75
80
112
67
56
90
63
53
48
60
67
50
75
Length Factor*
R
51
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
14MGT-1750
P.L 68.90
125 teeth
14MGT-1890
P.L 74.41
135 teeth
14MGT-1960
P.L 77.17
140 teeth
Length Factor*
1.750
1.750
1.750
1.763
1.765
1.767
1.775
1.778
1.778
1.786
1.800
1.800
1.806
1.811
1.818
1.821
1.828
1.853
1.860
1.861
1.867
1.867
1.867
1.868
1.875
1.875
1.875
1.893
1.909
1.914
1.919
1.923
1.931
1.935
1.969
1.971
1.972
1.972
1.974
2.000
2.000
2.000
2.000
2.000
2.027
2.029
2.030
2.032
2.051
2.069
2.083
2.088
14MGT-1568
P.L 61.73
112 teeth
9.825
11.053
24.562
11.755
10.527
9.299
12.457
14.036
19.650
8.772
11.053
15.790
9.825
11.755
10.527
12.457
9.299
11.053
14.036
11.755
9.825
19.650
24.562
12.457
10.527
13.158
15.790
9.299
11.053
11.755
12.457
13.158
9.825
10.527
11.053
11.755
12.457
24.562
13.158
9.825
10.527
14.036
15.790
19.650
13.158
12.457
11.755
11.053
14.036
10.527
13.158
12.457
14MGT-1400
P.L 55.12
100 teeth
56
63
140
67
60
53
71
80
112
50
63
90
56
67
60
71
53
63
80
67
56
112
140
71
60
75
90
53
63
67
71
75
56
60
63
67
71
140
75
56
60
80
90
112
75
71
67
63
80
60
75
71
14MGT-1260
P.L 49.61
90 teeth
5.614
6.316
14.036
6.667
5.965
5.263
7.018
7.895
11.053
4.912
6.141
8.772
5.439
6.492
5.790
6.842
5.088
5.965
7.544
6.316
5.263
10.527
13.158
6.667
5.614
7.018
8.421
4.912
5.790
6.141
6.492
6.842
5.088
5.439
5.614
5.965
6.316
12.457
6.667
4.912
5.263
7.018
7.895
9.825
6.492
6.141
5.790
5.439
6.842
5.088
6.316
5.965
14MGT-1190
P.L 46.85
85 teeth
32
36
80
38
34
30
40
45
63
28
35
50
31
37
33
39
29
34
43
36
30
60
75
38
32
40
48
28
33
35
37
39
29
31
32
34
36
71
38
28
30
40
45
56
37
35
33
31
39
29
36
34
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
9.69
11.10
9.49
12.50
10.91
15.29
13.71
18.62
17.06
22.22
20.67
24.99
23.44
26.38
24.83
10.22
11.82
10.01
11.63
13.21
12.84
14.43
16.00
11.95
16.20
17.77
19.32
15.33
13.28
19.82
21.38
22.92
18.96
16.95
22.59
24.14
25.69
21.74
19.74
23.98
25.53
27.07
23.13
21.14
11.13
12.53
9.61
13.92
11.03
16.70
13.84
20.02
17.19
9.81
11.22
8.91
10.34
12.63
10.13
11.75
10.53
11.94
9.72
13.34
11.15
15.42
12.96
14.55
12.07
16.12
13.96
9.93
11.34
10.25
12.75
13.08
15.54
18.75
16.32
17.89
15.45
19.45
17.31
13.52
16.45
18.88
23.62
20.80
14.74
22.35
19.94
21.50
19.09
23.05
20.93
17.19
20.07
22.48
26.39
23.57
17.56
25.12
22.72
24.27
21.87
25.82
23.70
19.99
22.85
25.25
27.77
24.96
18.97
26.51
24.11
25.66
23.26
27.20
25.09
21.39
24.24
26.64
9.03
10.46
11.87
12.19
14.68
11.29
15.58
18.02
14.70
10.66
12.06
9.84
13.46
11.27
10.37
10.05
9.15
11.47
10.58
9.96
12.87
11.99
11.39
10.49
16.25
14.09
13.21
12.31
11.41
15.67
14.80
14.21
13.33
12.43
19.58
17.44
16.57
15.70
14.82
19.00
18.15
17.56
16.70
15.82
19.21
21.63
18.35
14.98
23.18
21.06
20.20
19.34
18.47
22.61
21.76
21.18
20.33
19.46
21.99
24.40
21.14
17.81
25.95
23.83
22.98
22.12
21.26
25.38
24.53
23.96
23.11
22.25
23.39
25.79
22.53
19.22
27.34
25.22
24.37
23.51
22.66
26.77
25.92
25.35
24.50
23.64
10.17
9.27
11.59
10.70
13.00
12.12
11.53
15.79
14.93
14.94
19.13
18.27
13.88
18.60
22.74
21.89
17.56
15.34
21.39
25.51
24.66
20.37
18.17
22.78
26.90
26.05
21.77
19.58
10.08
10.60
11.51
11.65
12.55
13.45
14.33
9.38
10.82
12.24
15.05
11.76
12.67
15.06
15.94
16.82
17.69
14.00
18.40
15.18
16.07
18.72
19.59
20.45
21.31
17.69
22.02
18.84
19.71
21.51
22.37
23.23
24.09
20.49
24.79
21.64
22.50
22.91
23.77
24.62
25.48
21.89
26.18
23.04
23.90
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
10.41
8.60
7.99
8.11
0.68
52
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-2800
P.L 110.24
200 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2660
P.L 104.72
190 teeth
14MGT-2240
P.L 88.19
160 teeth
29.14
27.60
31.90
30.36
34.66
33.12
26.75
28.30
29.83
25.90
23.92
16.67
30.53
27.73
21.77
29.27
26.88
28.43
26.03
29.97
27.86
24.17
27.01
29.40
17.02
29.52
31.06
32.60
28.67
26.69
19.51
33.29
30.49
24.55
32.03
29.65
31.19
28.80
32.73
30.62
26.95
29.78
32.16
19.87
32.28
33.82
35.36
31.44
29.47
22.32
36.05
33.26
27.33
34.79
32.41
33.95
31.57
35.49
33.39
29.72
32.54
34.93
22.69
35.04
36.58
38.11
34.20
32.23
25.12
38.81
36.02
30.11
37.55
35.18
36.71
34.33
38.25
36.15
32.49
35.31
37.69
25.49
26.16
28.56
25.31
22.02
30.10
27.99
27.14
26.29
25.44
29.53
28.69
28.12
27.27
26.42
28.93
31.32
28.08
24.81
32.86
30.75
29.91
29.06
28.21
32.30
31.45
30.88
30.04
29.19
31.70
34.08
30.85
27.59
35.62
33.52
32.67
31.83
30.98
35.06
34.22
33.65
32.80
31.96
25.56
29.66
28.82
24.55
22.39
17.50
25.69
26.55
27.40
28.25
24.68
28.95
25.82
26.67
28.34
32.43
31.58
27.33
25.18
20.35
28.47
29.32
30.17
31.02
27.46
31.71
28.60
29.45
0.99
0.96
14MGT-2520
P.L 99.21
180 teeth
14MGT-2100
P.L 82.68
150 teeth
Speed
Ratio
37.42
35.89
31.11
35.19
34.35
30.11
27.97
23.18
31.24
32.09
32.94
33.78
30.24
34.48
31.37
32.22
34.46
36.85
33.62
30.37
38.38
36.28
35.44
34.59
33.75
37.82
36.98
36.41
35.57
34.72
19.59
33.88
37.95
37.11
32.88
30.75
25.99
34.01
34.86
35.70
36.54
33.01
37.24
34.14
34.99
40.18
38.65
21.39
37.81
39.34
40.87
36.96
35.00
27.91
41.57
38.78
32.88
40.31
37.94
39.47
37.10
41.01
38.91
35.26
38.07
40.45
28.29
21.99
37.23
39.61
36.38
33.14
41.14
39.04
38.20
37.36
36.52
40.58
39.74
39.18
38.33
37.49
22.46
36.65
40.71
39.87
35.65
33.53
28.79
36.78
37.62
38.46
39.31
35.78
40.00
36.91
37.75
42.94
41.41
24.23
40.57
42.11
43.64
39.73
37.77
30.70
44.33
41.54
35.66
43.08
40.70
42.24
39.86
43.77
41.68
38.03
40.84
43.21
31.08
24.84
40.00
42.37
39.15
35.92
43.90
41.81
40.97
40.13
39.29
43.34
42.50
41.94
41.10
40.26
25.32
39.42
43.48
42.64
38.42
36.30
31.59
39.55
40.39
41.23
42.07
38.55
42.77
39.68
40.52
49.56
48.03
30.97
47.19
48.72
50.25
46.35
44.40
37.37
50.95
48.16
42.29
49.69
47.33
48.86
46.49
50.39
48.30
44.66
47.46
49.83
37.75
31.59
46.62
48.99
45.78
42.56
50.52
48.43
47.59
46.75
45.91
49.96
49.12
48.56
47.72
46.89
32.08
46.05
50.10
49.26
45.06
42.95
38.26
46.18
47.02
47.86
48.70
45.19
49.39
46.31
47.15
52.87
51.34
34.32
50.51
52.04
53.57
49.67
47.72
40.70
54.26
51.48
45.61
53.01
50.64
52.17
49.80
53.70
51.61
47.98
50.77
53.14
41.09
34.95
49.94
52.31
49.10
45.88
53.83
51.74
50.91
50.07
49.23
53.27
52.44
51.88
51.04
50.20
35.45
49.36
53.41
52.57
48.38
46.27
41.60
49.49
50.33
51.17
52.01
48.51
52.71
49.63
50.47
56.73
55.20
38.22
54.37
55.90
57.42
53.53
51.58
44.57
58.12
55.34
49.48
56.86
54.50
56.03
53.66
57.56
55.47
51.84
54.63
57.00
44.96
38.85
53.80
56.16
52.96
49.74
57.69
55.60
54.77
53.93
53.09
57.13
56.30
55.74
54.90
54.06
39.35
53.23
57.27
56.43
52.24
50.14
45.48
53.36
54.20
55.03
55.87
52.37
56.57
53.49
54.33
65.01
63.48
46.55
62.64
64.17
65.70
61.81
59.86
52.88
66.39
63.61
57.77
65.14
62.78
64.31
61.94
65.83
63.75
60.13
62.91
65.28
53.27
47.19
62.08
64.44
61.24
58.03
65.97
63.88
63.05
62.21
61.38
65.41
64.58
64.02
63.18
62.35
47.71
61.51
65.54
64.71
60.53
58.43
53.79
61.64
62.48
63.31
64.15
60.66
64.84
61.78
62.61
74.65
73.13
56.25
72.30
73.82
75.35
71.46
69.52
62.55
76.04
73.26
67.43
74.79
72.43
73.96
71.60
75.48
73.40
69.79
72.57
74.93
62.94
56.90
71.73
74.09
70.90
67.69
75.62
73.53
72.70
71.87
71.03
75.06
74.23
73.67
72.84
72.00
57.42
71.17
75.20
74.36
70.19
68.09
63.47
71.30
72.13
72.97
73.80
70.32
74.50
71.43
72.27
1.750
1.750
1.750
1.763
1.765
1.767
1.775
1.778
1.778
1.786
1.800
1.800
1.806
1.811
1.818
1.821
1.828
1.853
1.860
1.861
1.867
1.867
1.867
1.868
1.875
1.875
1.875
1.893
1.909
1.914
1.919
1.923
1.931
1.935
1.969
1.971
1.972
1.972
1.974
2.000
2.000
2.000
2.000
2.000
2.027
2.029
2.030
2.032
2.051
2.069
2.083
2.088
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
DriveR
DriveN
No. of
grooves
No. of
grooves
32
36
80
38
34
30
40
45
63
28
35
50
31
37
33
39
29
34
43
36
30
60
75
38
32
40
48
28
33
35
37
39
29
31
32
34
36
71
38
28
30
40
45
56
37
35
33
31
39
29
36
34
56
63
140
67
60
53
71
80
112
50
63
90
56
67
60
71
53
63
80
67
56
112
140
71
60
75
90
53
63
67
71
75
56
60
63
67
71
140
75
56
60
80
90
112
75
71
67
63
80
60
75
71
Length Factor*
R
53
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
Length Factor*
9.50
8.86
14MGT-1750
P.L 68.90
125 teeth
14MGT-1890
P.L 74.41
135 teeth
14MGT-1960
P.L 77.17
140 teeth
2.090
2.093
2.094
2.100
2.100
2.105
2.113
2.143
2.143
2.152
2.161
2.162
2.172
2.206
2.219
2.222
2.222
2.233
2.240
2.240
2.250
2.250
2.250
2.273
2.286
2.290
2.308
2.310
2.333
2.333
2.344
2.353
2.366
2.367
2.368
2.393
2.400
2.419
2.424
2.432
2.448
2.489
2.500
2.500
2.500
2.500
2.500
2.507
2.535
2.536
2.571
2.581
14MGT-1568
P.L 61.73
112 teeth
24.562
15.790
11.755
11.053
29.475
14.036
19.650
10.527
13.158
12.457
11.755
14.036
11.053
13.158
12.457
14.036
24.562
11.755
19.650
29.475
11.053
15.790
31.580
13.158
14.036
12.457
15.790
11.755
19.650
24.562
13.158
14.036
29.475
12.457
15.790
11.755
31.580
13.158
14.036
15.790
12.457
19.650
13.158
14.036
15.790
24.562
35.089
29.475
31.580
12.457
15.790
14.036
14MGT-1400
P.L 55.12
100 teeth
140
90
67
63
168
80
112
60
75
71
67
80
63
75
71
80
140
67
112
168
63
90
180
75
80
71
90
67
112
140
75
80
168
71
90
67
180
75
80
90
71
112
75
80
90
140
200
168
180
71
90
80
14MGT-1260
P.L 49.61
90 teeth
11.755
7.544
5.614
5.263
14.036
6.667
9.299
4.912
6.141
5.790
5.439
6.492
5.088
5.965
5.614
6.316
11.053
5.263
8.772
13.158
4.912
7.018
14.036
5.790
6.141
5.439
6.842
5.088
8.421
10.527
5.614
5.965
12.457
5.263
6.667
4.912
13.158
5.439
5.790
6.492
5.088
7.895
5.263
5.614
6.316
9.825
14.036
11.755
12.457
4.912
6.141
5.439
14MGT-1190
P.L 46.85
85 teeth
67
43
32
30
80
38
53
28
35
33
31
37
29
34
32
36
63
30
50
75
28
40
80
33
35
31
39
29
48
60
32
34
71
30
38
28
75
31
33
37
29
45
30
32
36
56
80
67
71
28
35
31
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
10.20
10.72
11.63
13.57
14.45
16.94
17.81
15.57
20.58
21.44
18.42
23.36
24.22
19.83
24.75
25.61
10.94
12.36
9.38
9.91
10.84
10.31
11.75
10.02
8.98
14.12
17.81
20.61
14.58
12.00
12.91
10.88
18.53
15.30
16.19
17.07
14.24
17.94
15.42
16.31
14.36
22.15
18.97
19.84
20.70
17.93
21.57
19.09
19.96
18.05
24.92
21.76
22.63
23.49
20.74
24.34
21.89
22.75
20.86
22.02
14.94
26.31
23.16
24.02
24.88
22.14
25.73
23.29
24.15
22.27
15.17
11.88
12.79
13.69
9.50
10.95
13.81
17.19
20.83
23.62
25.01
15.28
10.43
11.87
14.70
18.06
12.15
21.69
15.93
24.47
18.78
25.86
20.19
10.14
12.11
11.00
13.03
11.07
13.93
15.54
14.48
16.43
12.26
17.31
19.21
18.17
20.09
16.05
20.96
22.01
20.99
22.88
18.90
23.74
23.41
22.39
24.28
20.32
25.14
15.51
12.23
11.11
15.67
14.59
19.34
18.29
22.14
21.11
23.54
22.51
10.25
13.15
11.19
14.05
16.56
12.38
17.44
20.21
16.16
21.08
23.01
19.02
23.87
24.40
20.44
25.26
15.78
14.71
12.49
16.68
19.46
18.42
16.28
20.34
12.46
11.34
15.90
14.83
12.60
19.58
18.54
16.40
22.26
21.23
19.14
23.13
14.35
22.39
21.36
19.26
23.66
22.64
20.56
24.53
15.85
23.79
22.76
20.68
13.38
11.45
16.80
12.71
14.95
20.46
16.52
18.66
23.26
19.38
21.48
24.65
20.80
22.88
0.81
0.85
0.89
0.92
0.94
9.61
9.73
12.35
11.22
10.36
10.48
0.68
0.73
0.75
0.77
13.27
54
R
14mm PITCH BELTS
Sprocket
Combinations
24.81
17.85
29.08
25.95
26.80
27.66
24.93
28.51
26.07
26.93
25.06
27.59
20.71
31.85
28.72
29.58
30.43
27.72
31.28
28.85
29.70
27.84
30.37
23.54
34.61
31.50
32.35
33.20
30.49
34.04
31.63
32.48
30.62
27.78
18.20
30.56
21.07
28.64
23.01
33.33
23.91
33.14
26.36
37.37
34.27
35.12
35.96
33.27
36.81
34.40
35.25
33.40
20.51
36.09
26.73
35.91
29.16
40.14
37.04
37.88
38.73
36.04
39.57
37.17
38.01
36.17
23.41
38.86
29.54
38.68
31.96
42.90
39.81
40.65
41.50
38.81
42.34
39.94
40.78
38.94
26.27
41.63
32.34
31.41
25.81
34.17
28.60
36.94
31.38
39.70
34.16
42.47
36.95
26.20
25.18
27.06
23.13
27.91
18.43
28.98
27.97
29.83
25.93
30.69
21.30
31.75
30.75
32.61
28.73
33.46
24.15
26.33
25.31
29.11
28.10
31.88
30.88
34.53
33.53
35.38
31.51
36.22
26.97
20.85
34.66
33.65
37.30
36.30
38.14
34.29
38.99
29.78
23.76
37.43
36.43
40.07
39.07
40.91
37.07
41.76
32.59
26.63
40.20
39.20
27.18
23.25
28.04
29.96
26.06
30.81
32.73
28.85
33.59
35.51
31.64
36.35
38.27
34.42
39.12
41.05
37.20
41.89
26.45
25.43
23.38
27.31
18.78
26.58
25.56
23.50
29.23
28.22
26.18
30.09
21.66
29.36
28.35
26.31
32.01
31.00
28.98
32.86
24.51
32.14
31.13
29.10
18.34
34.78
33.78
31.76
35.63
27.34
34.91
33.91
31.89
21.31
37.56
36.56
34.55
38.40
30.15
37.69
36.68
34.67
24.22
27.44
23.62
25.68
0.96
25.80
36.56
41.36
42.21
40.33
39.33
37.33
41.18
32.96
40.46
39.46
37.46
27.10
32.58
43.21
47.99
48.83
26.42
45.32
38.65
49.52
46.44
47.28
48.12
45.45
48.96
46.57
47.41
45.58
33.07
48.25
39.03
27.00
49.10
43.60
24.30
46.70
45.71
47.54
43.73
48.39
39.28
33.43
46.83
45.84
27.47
47.68
43.85
48.52
24.87
46.97
45.97
43.98
47.81
39.66
47.10
46.10
44.11
33.92
30.22
26.43
28.47
32.99
29.23
31.26
35.76
32.02
34.04
38.53
34.80
36.81
41.31
37.59
39.59
27.93
25.32
47.94
44.24
46.23
0.99
1.01
1.03
1.05
1.07
1.12
14MGT-4410
P.L 173.62
315 teeth
22.94
33.78
38.60
39.44
14MGT-3920
P.L 154.33
280 teeth
20.05
31.00
35.83
36.68
14MGT-3500
P.L 137.79
250 teeth
28.22
33.07
33.91
14MGT-3304
P.L 130.08
236 teeth
25.43
30.30
31.15
14MGT-3136
P.L 123.46
224 teeth
14MGT-2660
P.L 104.72
190 teeth
22.64
27.53
28.38
14MGT-2800
P.L 110.24
200 teeth
14MGT-2520
P.L 99.21
180 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2100
P.L 82.68
150 teeth
Speed
Ratio
35.94
46.53
51.31
52.15
29.86
48.64
41.98
52.84
49.76
50.60
51.44
48.77
52.28
49.89
50.73
48.90
36.44
51.57
42.37
30.46
52.41
46.92
27.82
50.02
49.03
50.86
47.05
51.70
42.62
36.81
50.15
49.17
30.93
51.00
47.18
51.84
28.40
50.29
49.30
47.31
51.13
43.00
50.42
49.43
47.44
37.30
31.40
28.85
51.26
47.57
49.56
39.86
50.40
55.17
56.01
33.84
52.51
45.87
56.70
53.62
54.46
55.30
52.64
56.14
53.76
54.59
52.77
40.36
55.43
46.25
34.44
56.27
50.79
31.85
53.89
52.90
54.73
50.92
55.57
46.51
40.73
54.02
53.03
34.92
54.86
51.05
55.70
32.44
54.15
53.16
51.18
54.99
46.89
54.28
53.30
51.31
41.23
28.33
35.40
32.91
55.12
51.44
53.43
48.22
58.69
63.45
64.29
42.28
60.79
54.18
64.98
61.91
62.75
63.58
60.93
64.42
62.04
62.88
61.06
48.72
63.72
54.57
42.90
64.55
59.09
40.38
62.17
61.19
63.01
59.22
63.85
54.83
49.10
62.31
61.32
43.39
63.15
59.35
63.98
40.99
62.44
61.46
59.48
63.28
55.22
62.57
61.59
59.61
49.61
37.08
43.89
41.47
63.41
59.75
61.72
57.93
68.36
73.10
73.94
52.06
70.45
63.86
74.63
71.57
72.40
73.24
70.59
74.07
71.70
72.54
70.72
58.45
73.37
64.26
52.69
74.21
68.76
50.22
71.83
70.85
72.67
68.89
73.51
64.52
58.83
71.97
70.99
53.19
72.80
69.02
73.64
50.84
72.10
71.12
69.15
72.94
64.91
72.23
71.25
69.29
59.34
47.04
53.70
51.33
73.07
69.42
71.38
2.090
2.093
2.094
2.100
2.100
2.105
2.113
2.143
2.143
2.152
2.161
2.162
2.172
2.206
2.219
2.222
2.222
2.233
2.240
2.240
2.250
2.250
2.250
2.273
2.286
2.290
2.308
2.310
2.333
2.333
2.344
2.353
2.366
2.367
2.368
2.393
2.400
2.419
2.424
2.432
2.448
2.489
2.500
2.500
2.500
2.500
2.500
2.507
2.535
2.536
2.571
2.581
1.14
1.16
1.20
1.25
DriveR
DriveN
No. of
grooves
No. of
grooves
67
43
32
30
80
38
53
28
35
33
31
37
29
34
32
36
63
30
50
75
28
40
80
33
35
31
39
29
48
60
32
34
71
30
38
28
75
31
33
37
29
45
30
32
36
56
80
67
71
28
35
31
140
90
67
63
168
80
112
60
75
71
67
80
63
75
71
80
140
67
112
168
63
90
180
75
80
71
90
67
112
140
75
80
168
71
90
67
180
75
80
90
71
112
75
80
90
140
200
168
180
71
90
80
Length Factor*
R
55
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
Length Factor*
14MGT-1960
P.L 77.17
140 teeth
14MGT-1260
P.L 49.61
90 teeth
14MGT-1190
P.L 46.85
85 teeth
2.586
2.605
2.642
2.647
2.667
2.667
2.667
2.679
2.687
2.727
2.759
2.800
2.800
2.800
2.800
2.813
2.817
2.857
2.857
2.872
2.903
2.917
2.947
2.985
2.987
3.000
3.000
3.000
3.027
3.103
3.111
3.111
3.155
3.170
3.175
3.200
3.214
3.214
3.256
3.294
3.333
3.343
3.360
3.394
3.396
3.500
3.500
3.500
3.556
3.571
3.590
3.600
14MGT-1890
P.L 74.41
135 teeth
13.158
19.650
24.562
15.790
14.036
29.475
35.089
13.158
31.580
15.790
14.036
19.650
24.562
29.475
39.300
15.790
35.089
14.036
31.580
19.650
15.790
24.562
19.650
35.089
39.300
15.790
29.475
31.580
19.650
15.790
19.650
24.562
39.300
29.475
35.089
19.650
15.790
31.580
24.562
19.650
35.089
39.300
29.475
19.650
31.580
19.650
24.562
29.475
39.300
35.089
24.562
31.580
14MGT-1750
P.L 68.90
125 teeth
75
112
140
90
80
168
200
75
180
90
80
112
140
168
224
90
200
80
180
112
90
140
112
200
224
90
168
180
112
90
112
140
224
168
200
112
90
180
140
112
200
224
168
112
180
112
140
168
224
200
140
180
14MGT-1568
P.L 61.73
112 teeth
5.088
7.544
9.299
5.965
5.263
11.053
13.158
4.912
11.755
5.790
5.088
7.018
8.772
10.527
14.036
5.614
12.457
4.912
11.053
6.842
5.439
8.421
6.667
11.755
13.158
5.263
9.825
10.527
6.492
5.088
6.316
7.895
12.457
9.299
11.053
6.141
4.912
9.825
7.544
5.965
10.527
11.755
8.772
5.790
9.299
5.614
7.018
8.421
11.053
9.825
6.842
8.772
14MGT-1400
P.L 55.12
100 teeth
29
43
53
34
30
63
75
28
67
33
29
40
50
60
80
32
71
28
63
39
31
48
38
67
75
30
56
60
37
29
36
45
71
53
63
35
28
56
43
34
60
67
50
33
53
32
40
48
63
56
39
50
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
12.58
16.02
19.71
22.51
14.57
23.91
16.07
11.56
12.83
15.06
16.63
18.78
19.50
21.60
20.92
23.01
12.69
16.14
19.83
22.64
24.04
11.67
12.94
15.18
16.75
18.90
19.62
21.72
14.90
21.04
23.13
16.41
13.05
16.87
19.73
21.16
15.30
19.02
21.85
23.25
13.16
16.98
15.01
19.85
16.52
21.28
15.12
16.63
11.78
0.68
0.73
0.75
0.77
0.81
13.27
17.10
19.97
21.40
13.38
17.21
15.23
20.09
15.34
16.74
21.52
16.85
13.49
17.33
15.45
20.21
16.97
21.64
15.56
17.08
15.66
17.19
15.77
17.30
0.92
0.94
0.85
0.89
56
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-4410
P.L 173.62
315 teeth
14MGT-2800
P.L 110.24
200 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-2660
P.L 104.72
190 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-2520
P.L 99.21
180 teeth
23.74
25.81
Speed
Ratio
29.49
21.89
26.55
28.60
32.27
24.75
18.67
29.35
31.39
35.04
27.58
21.65
32.14
34.17
37.81
30.40
24.57
34.93
36.94
40.59
33.21
27.46
37.71
39.72
21.26
54.41
47.15
41.60
51.57
53.56
35.88
28.90
54.55
33.38
51.70
53.69
47.53
41.97
36.23
19.93
24.47
22.83
27.29
25.70
30.10
28.55
32.90
31.37
35.69
34.19
38.48
20.04
16.65
22.95
19.77
25.82
22.78
28.67
25.72
31.50
28.63
34.32
20.16
23.07
25.94
28.79
31.62
22.67
34.44
20.27
23.18
16.97
26.06
20.10
28.91
23.12
31.74
26.07
19.71
34.56
28.98
22.89
17.08
20.21
23.23
26.18
29.10
22.87
35.97
27.65
26.72
39.37
31.24
31.01
43.32
35.35
62.70
55.48
49.99
59.88
61.85
44.37
37.66
62.84
41.95
60.01
61.98
55.86
50.36
44.74
32.81
60.14
38.13
62.12
42.43
55.99
60.27
50.62
56.12
38.60
33.37
60.40
45.23
42.79
56.25
60.53
56.38
50.99
33.81
45.59
39.06
56.50
60.66
43.27
51.24
56.63
39.41
34.26
45.96
56.76
43.63
56.89
51.61
46.20
34.70
39.87
51.74
43.99
72.37
65.17
59.73
69.55
71.52
54.19
47.65
72.50
51.82
69.68
71.65
65.56
60.11
54.57
43.05
69.81
48.13
71.78
52.32
65.69
69.95
60.36
65.82
48.61
43.64
70.08
55.06
52.68
65.95
70.21
66.08
60.75
44.10
55.44
49.09
66.21
70.34
53.17
61.00
66.34
49.45
44.57
55.81
66.47
53.54
66.60
61.38
56.06
45.03
49.93
61.51
53.91
2.586
2.605
2.642
2.647
2.667
2.667
2.667
2.679
2.687
2.727
2.759
2.800
2.800
2.800
2.800
2.813
2.817
2.857
2.857
2.872
2.903
2.917
2.947
2.985
2.987
3.000
3.000
3.000
3.027
3.103
3.111
3.111
3.155
3.170
3.175
3.200
3.214
3.214
3.256
3.294
3.333
3.343
3.360
3.394
3.396
3.500
3.500
3.500
3.556
3.571
3.590
3.600
26.83
29.62
32.40
35.17
37.94
40.72
23.87
25.93
19.36
26.68
28.73
22.25
29.48
31.51
25.11
19.00
32.27
34.29
27.94
21.99
35.05
37.07
30.76
24.92
37.84
39.85
33.58
27.81
21.59
47.36
25.76
44.50
46.49
40.29
34.65
28.74
23.99
26.80
29.60
32.39
35.18
37.97
44.63
26.06
28.85
31.64
34.42
37.20
39.98
19.47
24.11
22.36
26.92
19.58
22.48
25.23
29.73
19.22
25.34
28.06
32.52
22.22
28.18
30.89
35.31
25.15
31.01
33.70
38.09
28.05
33.83
46.62
26.21
40.41
44.76
34.89
40.54
24.23
27.05
29.85
32.64
35.43
38.22
22.02
19.70
24.35
19.81
22.60
27.17
22.72
25.46
29.97
25.58
19.55
28.31
32.77
28.43
22.56
31.13
35.56
31.25
25.49
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
0.96
14MGT-3304
P.L 130.08
236 teeth
14MGT-2380
P.L 93.70
170 teeth
26.70
19.01
14MGT-3136
P.L 123.46
224 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2100
P.L 82.68
150 teeth
47.23
39.91
34.28
44.37
46.36
28.39
50.55
43.26
37.67
47.70
49.69
31.87
24.67
50.68
29.31
47.83
49.82
43.64
38.04
32.22
47.96
25.10
49.95
29.77
43.76
48.09
38.28
43.89
25.53
51.83
29.34
53.82
33.84
47.66
51.96
42.22
47.78
29.79
33.95
38.35
34.07
28.40
44.89
29.19
26.54
40.66
45.01
40.79
35.25
48.22
32.69
30.11
44.02
48.35
44.14
38.65
52.09
36.71
34.19
47.91
52.22
48.04
42.59
22.35
29.54
40.91
45.14
26.99
35.49
41.04
33.03
25.97
44.27
48.48
30.56
38.89
44.39
26.29
37.06
30.23
48.16
52.35
34.65
42.83
48.29
30.57
29.88
41.16
27.32
41.29
35.85
30.11
33.38
44.52
30.90
44.64
39.25
33.61
37.41
48.42
35.00
48.54
43.20
37.65
1.25
DriveR
DriveN
No. of
grooves
No. of
grooves
29
43
53
34
30
63
75
28
67
33
29
40
50
60
80
32
71
28
63
39
31
48
38
67
75
30
56
60
37
29
36
45
71
53
63
35
28
56
43
34
60
67
50
33
53
32
40
48
63
56
39
50
75
112
140
90
80
168
200
75
180
90
80
112
140
168
224
90
200
80
180
112
90
140
112
200
224
90
168
180
112
90
112
140
224
168
200
112
90
180
140
112
200
224
168
112
180
112
140
168
224
200
140
180
Length Factor*
R
57
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
112
140
112
168
224
180
200
140
112
140
168
112
140
180
200
224
140
200
180
168
224
140
168
140
168
200
224
180
140
168
180
200
140
168
224
180
168
140
180
168
224
140
180
200
168
200
180
224
168
200
180
200
19.650
24.562
19.650
29.475
39.300
31.580
35.089
24.562
19.650
24.562
29.475
19.650
24.562
31.580
35.089
39.300
24.562
35.089
31.580
29.475
39.300
24.562
29.475
24.562
29.475
35.089
39.300
31.580
24.562
29.475
31.580
35.089
24.562
29.475
39.300
31.580
29.475
24.562
31.580
29.475
39.300
24.562
31.580
35.089
29.475
35.089
31.580
39.300
29.475
35.089
31.580
35.089
Length Factor*
0.68
0.73
0.75
0.77
0.81
0.85
14MGT-1750
P.L 68.90
125 teeth
14MGT-1568
P.L 61.73
112 teeth
14MGT-1400
P.L 55.12
100 teeth
14MGT-1260
P.L 49.61
90 teeth
14MGT-1190
P.L 46.85
85 teeth
3.613
3.684
3.733
3.733
3.733
3.750
3.774
3.784
3.862
3.889
3.907
4.000
4.000
4.000
4.000
4.000
4.118
4.167
4.186
4.200
4.226
4.242
4.308
4.375
4.421
4.444
4.480
4.500
4.516
4.541
4.615
4.651
4.667
4.667
4.667
4.737
4.800
4.828
4.865
4.941
4.978
5.000
5.000
5.000
5.091
5.128
5.143
5.209
5.250
5.263
5.294
5.405
14MGT-1960
P.L 77.17
140 teeth
5.439
6.667
5.263
7.895
10.527
8.421
9.299
6.492
5.088
6.316
7.544
4.912
6.141
7.895
8.772
9.825
5.965
8.421
7.544
7.018
9.299
5.790
6.842
5.614
6.667
7.895
8.772
7.018
5.439
6.492
6.842
7.544
5.263
6.316
8.421
6.667
6.141
5.088
6.492
5.965
7.895
4.912
6.316
7.018
5.790
6.842
6.141
7.544
5.614
6.667
5.965
6.492
14MGT-1890
P.L 74.41
135 teeth
31
38
30
45
60
48
53
37
29
36
43
28
35
45
50
56
34
48
43
40
53
33
39
32
38
45
50
40
31
37
39
43
30
36
48
38
35
29
37
34
45
28
36
40
33
39
35
43
32
38
34
37
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
15.88
17.41
15.99
17.52
12.91
16.10
17.63
13.01
16.21
17.74
0.89
0.92
0.94
58
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-2100
P.L 82.68
150 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2520
P.L 99.21
180 teeth
14MGT-2660
P.L 104.72
190 teeth
14MGT-2800
P.L 110.24
200 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
Speed
Ratio
20.38
23.30
17.18
23.41
26.17
20.32
26.29
29.03
23.34
29.15
31.86
26.30
31.98
20.03
34.68
29.21
34.81
23.21
41.41
36.09
41.54
30.45
44.77
39.49
44.90
33.96
48.67
43.44
48.80
38.00
25.60
35.58
31.34
43.56
48.92
43.69
38.24
49.05
43.81
35.92
31.67
26.01
43.93
31.89
36.15
38.59
26.32
44.05
38.71
44.17
38.82
32.22
26.63
36.49
44.30
38.94
36.61
32.44
44.42
39.06
26.84
36.72
39.17
44.54
36.84
39.29
27.14
44.66
36.95
32.77
39.40
32.88
37.06
27.35
39.52
32.99
37.18
33.10
57.02
51.86
57.15
46.56
35.03
44.22
40.22
51.99
57.27
52.11
46.80
57.40
52.24
44.58
40.56
35.47
52.36
40.79
44.82
47.16
35.80
52.49
47.28
52.61
47.40
41.14
36.13
45.17
52.73
47.52
45.29
41.37
52.86
47.64
36.35
45.41
47.76
52.98
45.52
47.88
36.68
53.10
45.64
41.71
48.00
41.82
45.76
36.90
48.12
41.94
45.88
42.05
66.73
61.63
66.86
56.42
45.38
54.15
50.29
61.76
66.98
61.88
56.67
67.11
62.01
54.51
50.64
45.84
62.14
50.88
54.76
57.04
46.18
62.26
57.16
62.39
57.29
51.24
46.53
55.12
62.51
57.41
55.24
51.47
62.64
57.53
46.76
55.36
57.65
62.77
55.48
57.78
47.10
62.89
55.61
51.83
57.90
51.95
55.73
47.33
58.02
52.06
55.85
52.18
3.613
3.684
3.733
3.733
3.733
3.750
3.774
3.784
3.862
3.889
3.907
4.000
4.000
4.000
4.000
4.000
4.118
4.167
4.186
4.200
4.226
4.242
4.308
4.375
4.421
4.444
4.480
4.500
4.516
4.541
4.615
4.651
4.667
4.667
4.667
4.737
4.800
4.828
4.865
4.941
4.978
5.000
5.000
5.000
5.091
5.128
5.143
5.209
5.250
5.263
5.294
5.405
20.50
20.61
20.72
17.29
23.53
17.39
20.43
26.41
20.54
23.45
29.27
23.56
23.65
17.50
26.53
20.65
17.60
20.75
31.47
27.04
39.62
45.02
39.74
34.19
45.15
39.86
31.81
27.36
36.57
23.70
28.42
31.01
39.98
27.58
32.03
34.54
29.39
23.68
26.41
32.10
26.52
20.23
32.22
26.64
29.33
34.93
29.44
23.43
35.05
29.56
20.61
23.79
26.75
29.68
20.55
20.81
23.75
26.86
20.65
26.98
20.75
29.79
23.86
29.91
23.97
36.68
31.13
36.80
31.24
24.01
40.10
34.65
40.22
34.77
27.90
32.37
40.34
34.88
32.48
28.11
40.46
35.00
17.70
20.86
23.90
17.81
20.97
24.01
17.91
21.08
24.12
27.09
20.86
21.12
30.02
24.07
21.23
18.02
21.19
24.23
27.21
20.96
30.14
24.18
28.75
36.92
31.35
28.86
24.21
37.04
31.46
21.33
24.29
30.25
21.43
24.39
28.97
31.58
37.16
29.08
31.69
32.59
35.11
40.58
32.70
35.23
27.43
30.37
21.53
21.27
24.50
37.28
29.19
24.52
31.80
24.62
29.30
40.70
32.81
28.43
35.34
28.53
32.93
31.91
24.73
29.41
24.83
35.45
28.64
33.04
28.75
1.12
1.14
1.16
18.12
21.30
24.34
21.06
27.32
21.17
18.23
21.40
24.45
21.63
21.38
24.61
21.74
0.96
27.87
23.18
36.21
41.66
36.33
30.67
41.79
36.45
28.20
23.49
0.99
1.01
1.03
1.05
1.07
1.20
1.25
DriveR
DriveN
No. of
grooves
No. of
grooves
31
38
30
45
60
48
53
37
29
36
43
28
35
45
50
56
34
48
43
40
53
33
39
32
38
45
50
40
31
37
39
43
30
36
48
38
35
29
37
34
45
28
36
40
33
39
35
43
32
38
34
37
112
140
112
168
224
180
200
140
112
140
168
112
140
180
200
224
140
200
180
168
224
140
168
140
168
200
224
180
140
168
180
200
140
168
224
180
168
140
180
168
224
140
180
200
168
200
180
224
168
200
180
200
Length Factor*
R
59
Table No. 6
14mm PITCH BELTS
Sprocket
Combinations
DriveN
14MGT-1750
P.L 68.90
125 teeth
14MGT-1890
P.L 74.41
135 teeth
14MGT-1960
P.L 77.17
140 teeth
Length Factor*
14MGT-1568
P.L 61.73
112 teeth
29.475
31.580
35.089
29.475
39.300
31.580
35.089
39.300
29.475
31.580
35.089
39.300
29.475
31.580
39.300
35.089
31.580
39.300
35.089
39.300
31.580
35.089
39.300
35.089
39.300
35.089
39.300
35.089
39.300
39.300
39.300
39.300
14MGT-1400
P.L 55.12
100 teeth
168
180
200
168
224
180
200
224
168
180
200
224
168
180
224
200
180
224
200
224
180
200
224
200
224
200
224
200
224
224
224
224
14MGT-1260
P.L 49.61
90 teeth
5.439
5.790
6.316
5.263
7.018
5.614
6.141
6.842
5.088
5.439
5.965
6.667
4.912
5.263
6.492
5.790
5.088
6.316
5.614
6.141
4.912
5.439
5.965
5.263
5.790
5.088
5.614
4.912
5.439
5.263
5.088
4.912
14MGT-1190
P.L 46.85
85 teeth
31
33
36
30
40
32
35
39
29
31
34
38
28
30
37
33
29
36
32
35
28
31
34
30
33
29
32
28
31
30
29
28
Speed
Ratio
14MGT-1120
P.L 44.09
80 teeth
No.
Pitch
No.
Pitch
of
Diameter
of
Diameter
14MGT-994
P.L 39.13
71 teeth
DriveR
0.68
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
5.419
5.455
5.556
5.600
5.600
5.625
5.714
5.744
5.793
5.806
5.882
5.895
6.000
6.000
6.054
6.061
6.207
6.222
6.250
6.400
6.429
6.452
6.588
6.667
6.788
6.897
7.000
7.143
7.226
7.467
7.724
8.000
60
R
14mm PITCH BELTS
Sprocket
Combinations
14MGT-3304
P.L 130.08
236 teeth
14MGT-3500
P.L 137.79
250 teeth
14MGT-3920
P.L 154.33
280 teeth
14MGT-4410
P.L 173.62
315 teeth
14MGT-3136
P.L 123.46
224 teeth
14MGT-2660
P.L 104.72
190 teeth
Speed
Ratio
18.00
21.48
35.57
33.15
28.85
35.68
18.19
21.69
24.93
22.04
32.25
29.73
25.14
35.80
33.37
29.07
18.29
21.79
25.03
22.14
32.36
29.84
35.91
33.48
22.25
25.24
29.95
29.17
33.59
25.34
29.28
30.06
25.44
33.71
29.38
23.19
29.49
23.28
29.59
23.38
29.70
23.48
23.58
23.67
23.77
39.64
37.29
33.21
39.75
27.66
37.41
33.32
27.76
39.87
37.52
33.43
27.86
39.99
37.63
27.96
33.53
37.75
28.07
33.64
28.17
37.86
33.75
28.27
33.86
28.37
33.97
28.47
34.08
28.58
28.68
28.78
28.88
48.24
45.99
42.17
48.36
37.23
46.11
42.28
37.34
48.48
46.23
42.39
37.45
48.60
46.35
37.56
42.51
46.46
37.67
42.62
37.78
46.58
42.74
37.88
42.85
37.99
42.96
38.10
43.08
38.21
38.32
38.43
38.54
58.14
55.97
52.30
58.26
47.67
56.09
52.42
47.79
58.39
56.21
52.53
47.90
58.51
56.33
48.01
52.65
56.45
48.13
52.77
48.24
56.57
52.89
48.36
53.01
48.47
53.12
48.58
53.24
48.70
48.81
48.93
49.04
5.419
5.455
5.556
5.600
5.600
5.625
5.714
5.744
5.793
5.806
5.882
5.895
6.000
6.000
6.054
6.061
6.207
6.222
6.250
6.400
6.429
6.452
6.588
6.667
6.788
6.897
7.000
7.143
7.226
7.467
7.724
8.000
18.10
21.58
24.82
1.14
1.16
18.70
14MGT-2800
P.L 110.24
200 teeth
14MGT-2520
P.L 99.21
180 teeth
14MGT-2380
P.L 93.70
170 teeth
14MGT-2240
P.L 88.19
160 teeth
14MGT-2100
P.L 82.68
150 teeth
24.71
21.84
32.03
29.52
24.93
32.14
21.94
29.62
25.03
33.26
28.96
22.35
25.55
25.65
25.75
0.96
0.99
1.01
1.03
1.05
1.07
1.12
1.20
1.25
DriveR
DriveN
No. of
grooves
No. of
grooves
31
33
36
30
40
32
35
39
29
31
34
38
28
30
37
33
29
36
32
35
28
31
34
30
33
29
32
28
31
30
29
28
168
180
200
168
224
180
200
224
168
180
200
224
168
180
224
200
180
224
200
224
180
200
224
200
224
200
224
200
224
224
224
224
Length Factor*
R
61
Horsepower Rating for 12mm Wide
8mm Pitch Poly Chain® GT®2 Belts
RPM
OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
Rated Base Horsepower for Small Sprocket
(Number of Grooves and Pitch Diameter, Inches)
22
2.206
25
2.506
28
2.807
0.077
0.14
0.24
0.29
0.37
0.44
0.54
0.61
0.70
1.00
1.12
1.28
1.60
1.83
2.06
2.49
2.81
2.92
3.29
3.33
3.73
4.01
4.13
4.51
5.12
7.23
8.07
11.3
12.6
14.2
15.5
16.9
18.1
0.088
0.17
0.27
0.34
0.43
0.51
0.63
0.70
0.81
1.16
1.30
1.49
1.86
2.13
2.39
2.90
3.27
3.39
3.83
3.87
4.34
4.67
4.80
5.26
5.96
8.43
9.42
13.1
14.7
16.6
18.2
19.7
21.2
0.100
0.19
0.31
0.38
0.49
0.58
0.71
0.80
0.92
1.31
1.48
1.69
2.11
2.42
2.71
3.30
3.72
3.86
4.36
4.41
4.95
5.32
5.47
5.99
6.79
9.61
10.7
15.0
16.8
18.9
20.7
22.5
24.2
30
3.008
0.11
0.20
0.34
0.41
0.53
0.63
0.77
0.86
0.99
1.42
1.59
1.82
2.28
2.61
2.93
3.56
4.02
4.17
4.70
4.76
5.34
5.74
5.91
6.47
7.34
10.4
11.6
16.2
18.2
20.4
22.4
24.3
26.1
32
3.208
0.12
0.22
0.36
0.44
0.57
0.67
0.82
0.92
1.06
1.52
1.71
1.96
2.44
2.80
3.14
3.82
4.31
4.47
5.05
5.11
5.74
6.17
6.35
6.95
7.89
11.2
12.5
17.4
19.5
21.9
24.0
26.1
28.0
34
3.409
36
3.609
0.12
0.23
0.38
0.47
0.61
0.72
0.88
0.99
1.13
1.62
1.83
2.09
2.61
2.99
3.36
4.08
4.61
4.78
5.39
5.46
6.13
6.59
6.78
7.42
8.43
11.9
13.3
18.6
20.8
23.4
25.7
27.8
29.8
38
3.810
0.13
0.25
0.41
0.50
0.64
0.76
0.93
1.05
1.20
1.72
1.94
2.22
2.77
3.17
3.57
4.34
4.90
5.08
5.73
5.81
6.51
7.00
7.21
7.89
8.96
12.7
14.2
19.8
22.1
24.9
27.2
29.5
31.6
40
4.010
0.14
0.26
0.43
0.53
0.68
0.81
0.99
1.11
1.27
1.82
2.05
2.35
2.94
3.36
3.78
4.59
5.18
5.38
6.07
6.15
6.90
7.42
7.64
8.36
9.49
13.4
15.0
21.0
23.4
26.3
28.8
31.1
33.4
42
4.211
0.15
0.27
0.45
0.56
0.72
0.85
1.04
1.17
1.34
1.92
2.17
2.48
3.10
3.55
3.99
4.84
5.47
5.68
6.41
6.49
7.28
7.83
8.06
8.82
10.0
14.2
15.9
22.1
24.7
27.7
30.3
32.8
35.1
45
4.511
0.15
0.29
0.48
0.59
0.75
0.89
1.10
1.23
1.41
2.02
2.28
2.61
3.26
3.73
4.19
5.10
5.76
5.97
6.74
6.83
7.66
8.23
8.48
9.28
10.5
14.9
16.7
23.2
26.0
29.1
31.8
34.3
36.7
0.16
0.31
0.51
0.63
0.81
0.96
1.18
1.32
1.52
2.17
2.44
2.80
3.50
4.00
4.50
5.47
6.18
6.41
7.24
7.33
8.22
8.84
9.10
9.96
11.3
16.0
17.9
24.9
27.8
31.1
34.0
36.6
39.1
48
4.812
0.18
0.33
0.55
0.67
0.86
1.02
1.26
1.41
1.62
2.32
2.61
2.99
3.73
4.28
4.81
5.84
6.60
6.85
7.73
7.83
8.78
9.44
9.72
10.6
12.1
17.1
19.1
26.5
29.6
33.1
36.1
38.9
50
5.013
0.18
0.34
0.57
0.70
0.90
1.07
1.31
1.47
1.69
2.42
2.72
3.11
3.89
4.46
5.01
6.09
6.88
7.14
8.06
8.16
9.15
9.84
10.1
11.1
12.6
17.8
19.9
27.6
30.8
34.4
37.5
40.3
53
5.314
0.19
0.36
0.61
0.74
0.95
1.13
1.39
1.56
1.79
2.56
2.89
3.30
4.13
4.73
5.31
6.46
7.29
7.57
8.54
8.65
9.71
10.4
10.7
11.8
13.3
18.9
21.1
29.2
32.5
36.3
39.5
56
5.614
60
6.015
0.20
0.38
0.64
0.79
1.01
1.19
1.47
1.64
1.89
2.71
3.05
3.49
4.36
4.99
5.61
6.82
7.70
7.99
9.02
9.14
10.3
11.0
11.3
12.4
14.1
19.9
22.2
30.8
34.2
38.2
0.22
0.41
0.68
0.84
1.08
1.28
1.57
1.76
2.03
2.90
3.26
3.74
4.67
5.35
6.01
7.30
8.25
8.56
9.66
9.78
11.0
11.8
12.1
13.3
15.1
21.3
23.8
32.8
36.5
40.5
63
6.316
0.23
0.43
0.72
0.88
1.13
1.34
1.65
1.85
2.13
3.04
3.42
3.92
4.90
5.61
6.31
7.66
8.65
8.98
10.1
10.3
11.5
12.4
12.7
13.9
15.8
22.3
24.9
34.3
38.1
67
6.717
71
7.118
0.24
0.46
0.76
0.94
1.20
1.43
1.75
1.96
2.26
3.23
3.64
4.16
5.20
5.96
6.70
8.14
9.19
9.53
10.8
10.9
12.2
13.1
13.5
14.8
16.8
23.7
26.4
36.3
40.2
0.26
0.49
0.81
0.99
1.27
1.51
1.85
2.08
2.39
3.42
3.85
4.41
5.50
6.30
7.08
8.61
9.72
10.1
11.4
11.5
12.9
13.9
14.3
15.6
17.7
25.0
27.8
38.1
42.2
75
7.519
0.27
0.51
0.85
1.05
1.34
1.59
1.95
2.19
2.52
3.61
4.06
4.65
5.80
6.65
7.47
9.07
10.2
10.6
12.0
12.1
13.6
14.6
15.1
16.5
18.7
26.3
29.3
40.0
Use this sprocket only if required to obtain speed ratio or to meet diameter limitations. See Engineering Section II-5 for additional details.
RPM
OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
Poly Chain GT2 Belt Length
Correction Factor Table
Additional Horsepower for Speed Ratio
of Speed-Down Drives
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.05
0.05
0.08
0.09
0.14
0.16
0.19
0.21
0.23
0.26
1.12
to
1.19
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.04
0.05
0.05
0.06
0.06
0.07
0.08
0.08
0.08
0.09
0.11
0.16
0.19
0.28
0.32
0.38
0.42
0.47
0.52
1.20
to
1.30
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.05
0.06
0.07
0.08
0.08
0.10
0.10
0.11
0.12
0.13
0.14
0.16
0.25
0.28
0.42
0.49
0.56
0.63
0.70
0.78
1.31
to
1.45
0.00
0.00
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.04
0.04
0.06
0.07
0.08
0.09
0.11
0.11
0.13
0.13
0.15
0.16
0.17
0.19
0.22
0.33
0.38
0.56
0.65
0.75
0.85
0.94
1.03
1.46
to
1.65
0.00
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.04
0.05
0.05
0.07
0.08
0.09
0.12
0.14
0.14
0.16
0.16
0.19
0.20
0.21
0.23
0.27
0.41
0.47
0.70
0.81
0.94
1.06
1.17
1.29
1.66
to
1.99
2.00
to
2.63
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.05
0.06
0.07
0.08
0.10
0.11
0.14
0.16
0.17
0.19
0.20
0.23
0.25
0.25
0.28
0.33
0.49
0.56
0.85
0.97
1.13
1.27
1.41
1.55
0.00
0.01
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.06
0.07
0.08
0.10
0.12
0.13
0.16
0.19
0.20
0.23
0.23
0.26
0.29
0.30
0.33
0.38
0.58
0.66
0.99
1.13
1.32
1.48
1.64
1.81
2.64
to
4.47
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.07
0.08
0.09
0.11
0.13
0.15
0.19
0.22
0.23
0.26
0.26
0.30
0.33
0.34
0.38
0.44
0.66
0.75
1.13
1.30
1.50
1.69
1.88
2.07
4.48
and
Over
0.00
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.07
0.08
0.10
0.13
0.15
0.17
0.21
0.24
0.25
0.29
0.30
0.34
0.37
0.38
0.42
0.49
0.74
0.85
1.27
1.46
1.69
1.90
2.11
2.32
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
8MGT-640
8MGT-720
8MGT-800
8MGT-896
8MGT-1000
8MGT-1120
8MGT-1200
8MGT-1280
8MGT-1440
8MGT-1600
8MGT-1792
8MGT-2000
8MGT-2240
8MGT-2400
8MGT-2520
8MGT-2840
8MGT-3200
8MGT-3600
8MGT-4000
8MGT-4480
80
90
100
112
125
140
150
160
180
200
224
250
280
300
315
355
400
450
500
560
0.79
0.83
0.87
0.91
0.96
1.00
1.03
1.05
1.10
1.14
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
Speed Reducer Output Shaft Speed
For 1750 rpm Motor Input
Reducer Speed Ratio
Reducer Output Speed
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
Rated Drive Horsepower = [Rated Base Horsepower + Additional Horsepower for Speed Ratio] × Belt Length Correction Factor
62
R
80
8.020
0.29
0.55
0.91
1.12
1.43
1.69
2.08
2.33
2.68
3.84
4.32
4.94
6.18
7.07
7.95
9.65
10.9
11.3
12.8
12.9
14.5
15.6
16.0
17.5
19.9
27.9
31.1
42.2
RPM
OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
22
2.206
0.13
0.25
0.42
0.51
0.66
0.78
0.95
1.07
1.22
1.75
1.97
2.25
2.80
3.20
3.60
4.37
4.92
5.11
5.76
5.83
6.53
7.02
7.22
7.90
8.96
12.6
14.1
19.7
22.0
24.8
27.2
29.5
31.7
25
2.506
0.15
0.29
0.48
0.59
0.76
0.90
1.10
1.23
1.42
2.02
2.28
2.60
3.25
3.72
4.18
5.07
5.72
5.94
6.70
6.78
7.60
8.17
8.41
9.20
10.4
14.7
16.5
23.0
25.8
29.0
31.8
34.5
37.1
28
2.807
0.17
0.33
0.55
0.67
0.86
1.02
1.25
1.40
1.61
2.30
2.59
2.96
3.69
4.23
4.75
5.77
6.51
6.76
7.62
7.72
8.66
9.30
9.58
10.5
11.9
16.8
18.8
26.3
29.4
33.1
36.3
39.4
42.3
30
3.008
0.19
0.35
0.59
0.72
0.93
1.10
1.35
1.51
1.73
2.48
2.79
3.19
3.99
4.56
5.13
6.23
7.03
7.30
8.23
8.34
9.35
10.1
10.3
11.3
12.9
18.2
20.3
28.4
31.8
35.8
39.2
42.5
45.7
32
3.208
0.20
0.38
0.63
0.77
0.99
1.17
1.44
1.62
1.86
2.66
2.99
3.42
4.28
4.90
5.50
6.68
7.55
7.83
8.84
8.95
10.0
10.8
11.1
12.2
13.8
19.5
21.8
30.5
34.1
38.4
42.1
45.6
49.0
34
3.409
36
3.609
0.21
0.40
0.67
0.83
1.06
1.25
1.54
1.72
1.98
2.84
3.19
3.66
4.57
5.23
5.88
7.14
8.06
8.36
9.44
9.56
10.7
11.5
11.9
13.0
14.7
20.9
23.3
32.6
36.5
41.0
44.9
48.6
52.2
38
3.810
0.23
0.43
0.71
0.88
1.12
1.33
1.63
1.83
2.11
3.01
3.39
3.88
4.85
5.56
6.24
7.59
8.57
8.89
10.0
10.2
11.4
12.3
12.6
13.8
15.7
22.2
24.8
34.6
38.8
43.5
47.7
51.6
55.3
40
4.010
0.24
0.45
0.75
0.93
1.19
1.41
1.73
1.94
2.23
3.19
3.59
4.11
5.14
5.88
6.61
8.03
9.07
9.41
10.6
10.8
12.1
13.0
13.4
14.6
16.6
23.5
26.3
36.7
41.0
46.1
50.4
54.5
58.4
42
4.211
0.25
0.48
0.80
0.98
1.25
1.49
1.82
2.05
2.35
3.37
3.79
4.34
5.42
6.21
6.98
8.48
9.57
9.93
11.2
11.4
12.7
13.7
14.1
15.4
17.5
24.8
27.7
38.7
43.2
48.5
53.0
57.3
61.3
45
4.511
0.27
0.50
0.84
1.03
1.32
1.56
1.92
2.15
2.47
3.54
3.99
4.56
5.70
6.53
7.34
8.92
10.1
10.5
11.8
11.9
13.4
14.4
14.8
16.2
18.4
26.1
29.2
40.7
45.4
50.9
55.7
60.1
64.3
0.29
0.54
0.90
1.10
1.42
1.68
2.06
2.31
2.66
3.80
4.28
4.90
6.12
7.01
7.88
9.57
10.8
11.2
12.7
12.8
14.4
15.5
15.9
17.4
19.8
28.0
31.3
43.6
48.7
54.5
59.5
64.1
68.4
48
4.812
0.31
0.58
0.96
1.18
1.51
1.79
2.20
2.46
2.84
4.06
4.57
5.23
6.54
7.48
8.41
10.2
11.5
12.0
13.5
13.7
15.4
16.5
17.0
18.6
21.1
29.9
33.4
46.5
51.8
58.0
63.2
68.0
50
5.013
0.32
0.60
1.00
1.23
1.58
1.87
2.29
2.57
2.96
4.23
4.76
5.45
6.81
7.80
8.77
10.7
12.0
12.5
14.1
14.3
16.0
17.2
17.7
19.4
22.0
31.2
34.8
48.3
53.9
60.2
65.6
70.5
53
5.314
56
5.614
0.34
0.64
1.06
1.30
1.67
1.98
2.43
2.72
3.13
4.49
5.05
5.78
7.22
8.27
9.30
11.3
12.8
13.2
14.9
15.1
17.0
18.3
18.8
20.6
23.4
33.0
36.9
51.1
56.9
63.6
69.1
60
6.015
0.36
0.67
1.12
1.38
1.77
2.09
2.57
2.88
3.31
4.74
5.33
6.11
7.63
8.74
9.82
11.9
13.5
14.0
15.8
16.0
17.9
19.3
19.9
21.7
24.7
34.8
38.9
53.9
59.9
66.8
0.38
0.72
1.20
1.47
1.89
2.24
2.75
3.08
3.55
5.07
5.71
6.54
8.17
9.36
10.5
12.8
14.4
15.0
16.9
17.1
19.2
20.6
21.2
23.3
26.4
37.3
41.6
57.4
63.8
70.9
63
6.316
0.40
0.76
1.26
1.55
1.98
2.35
2.88
3.23
3.72
5.32
5.99
6.86
8.57
9.82
11.0
13.4
15.1
15.7
17.7
18.0
20.1
21.6
22.3
24.4
27.7
39.1
43.6
60.0
66.6
67
6.717
71
7.118
0.43
0.80
1.34
1.64
2.11
2.50
3.06
3.43
3.95
5.65
6.37
7.29
9.10
10.4
11.7
14.2
16.1
16.7
18.8
19.1
21.4
23.0
23.7
25.9
29.4
41.4
46.2
63.4
70.3
75
7.519
0.45
0.85
1.41
1.74
2.23
2.64
3.24
3.64
4.18
5.98
6.74
7.71
9.63
11.0
12.4
15.1
17.0
17.6
19.9
20.2
22.6
24.3
25.0
27.4
31.0
43.7
48.7
66.7
73.8
0.48
0.90
1.49
1.83
2.35
2.79
3.42
3.83
4.41
6.31
7.10
8.13
10.2
11.6
13.1
15.9
17.9
18.6
21.0
21.3
23.8
25.6
26.4
28.8
32.7
46.0
51.3
70.0
80
8.020
0.51
0.96
1.59
1.95
2.50
2.97
3.64
4.08
4.69
6.72
7.56
8.65
10.8
12.4
13.9
16.9
19.1
19.8
22.3
22.6
25.3
27.2
28.0
30.7
34.8
48.8
54.3
73.9
RPM OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.07
0.08
0.10
0.14
0.16
0.25
0.28
0.33
0.37
0.41
0.45
1.12
to
1.19
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.19
0.29
0.33
0.49
0.57
0.66
0.74
0.82
0.90
1.20
to
1.30
0.00
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.04
0.05
0.06
0.07
0.09
0.10
0.12
0.14
0.15
0.17
0.17
0.20
0.21
0.22
0.25
0.29
0.43
0.49
0.74
0.85
0.99
1.11
1.23
1.36
1.31
to
1.45
0.00
0.01
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.06
0.07
0.08
0.10
0.12
0.13
0.16
0.19
0.20
0.23
0.23
0.26
0.29
0.30
0.33
0.38
0.58
0.66
0.99
1.13
1.32
1.48
1.64
1.81
1.46
to
1.65
1.66
to
1.99
0.00
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.07
0.08
0.10
0.12
0.14
0.16
0.21
0.24
0.25
0.28
0.29
0.33
0.36
0.37
0.41
0.48
0.72
0.82
1.23
1.42
1.64
1.85
2.05
2.26
0.00
0.01
0.02
0.02
0.03
0.03
0.04
0.05
0.06
0.09
0.10
0.11
0.15
0.17
0.20
0.25
0.28
0.30
0.34
0.35
0.39
0.43
0.44
0.49
0.57
0.86
0.99
1.48
1.70
1.97
2.22
2.47
2.71
2.00
to
2.63
0.01
0.01
0.02
0.03
0.03
0.04
0.05
0.06
0.07
0.10
0.12
0.13
0.17
0.20
0.23
0.29
0.33
0.35
0.40
0.40
0.46
0.50
0.52
0.58
0.67
1.01
1.15
1.73
1.99
2.30
2.59
2.88
3.16
2.64
to
4.47
0.01
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.12
0.13
0.15
0.20
0.23
0.26
0.33
0.38
0.39
0.45
0.46
0.53
0.57
0.59
0.66
0.76
1.15
1.32
1.97
2.27
2.63
2.96
3.29
3.62
4.48
and
Over
0.01
0.01
0.03
0.03
0.04
0.05
0.07
0.07
0.09
0.13
0.15
0.17
0.22
0.26
0.30
0.37
0.43
0.44
0.51
0.52
0.59
0.64
0.67
0.74
0.86
1.29
1.48
2.22
2.55
2.96
3.33
3.70
4.07
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
8MGT-640
8MGT-720
8MGT-800
8MGT-896
8MGT-1000
8MGT-1120
8MGT-1200
8MGT-1280
8MGT-1440
8MGT-1600
8MGT-1792
8MGT-2000
8MGT-2240
8MGT-2400
8MGT-2520
8MGT-2840
8MGT-3200
8MGT-3600
8MGT-4000
8MGT-4480
80
90
100
112
125
140
150
160
180
200
224
250
280
300
315
355
400
450
500
560
0.79
0.83
0.87
0.91
0.96
1.00
1.03
1.05
1.10
1.14
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
R
63
RPM
OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
22
2.206
0.23
0.43
0.71
0.88
1.12
1.33
1.63
1.83
2.10
3.00
3.37
3.85
4.80
5.49
6.17
7.48
8.44
8.76
9.87
9.99
11.2
12.0
12.4
13.5
15.4
21.7
24.2
33.7
37.8
42.5
46.6
50.6
54.4
25
2.506
0.26
0.50
0.82
1.01
1.30
1.54
1.89
2.11
2.43
3.47
3.90
4.46
5.57
6.38
7.16
8.69
9.81
10.2
11.5
11.6
13.0
14.0
14.4
15.8
17.9
25.3
28.3
39.4
44.2
49.7
54.5
59.1
63.6
28
2.807
0.30
0.56
0.93
1.15
1.47
1.74
2.14
2.40
2.76
3.94
4.43
5.07
6.33
7.25
8.14
9.89
11.2
11.6
13.1
13.2
14.8
15.9
16.4
18.0
20.4
28.8
32.2
45.0
50.4
56.7
62.2
67.5
72.5
30
3.008
0.32
0.61
1.01
1.24
1.59
1.88
2.31
2.59
2.97
4.25
4.78
5.47
6.84
7.82
8.79
10.7
12.1
12.5
14.1
14.3
16.0
17.2
17.7
19.4
22.0
31.2
34.9
48.7
54.5
61.3
67.2
72.9
78.3
32
3.208
0.35
0.65
1.08
1.33
1.70
2.01
2.47
2.77
3.19
4.56
5.13
5.87
7.33
8.39
9.43
11.5
12.9
13.4
15.1
15.3
17.2
18.5
19.0
20.8
23.7
33.5
37.5
52.3
58.5
65.8
72.1
78.2
83.9
34
3.409
0.37
0.69
1.15
1.42
1.81
2.15
2.64
2.96
3.40
4.86
5.48
6.27
7.83
8.96
10.1
12.2
13.8
14.3
16.2
16.4
18.4
19.8
20.3
22.3
25.3
35.8
40.0
55.9
62.5
70.3
77.0
83.4
89.4
36
3.609
38
3.810
40
4.010
42
4.211
45
4.511
48
4.812
50
5.013
53
5.314
56
5.614
60
6.015
63
6.316
67
6.717
71
7.118
75
7.519
80
8.020
0.41
0.78
1.29
1.59
2.04
2.42
2.97
3.32
3.82
5.47
6.16
7.05
8.81
10.1
11.3
13.8
15.6
16.1
18.2
18.4
20.7
22.2
22.9
25.1
28.5
40.3
45.1
62.9
70.3
78.9
86.4
93.4
100.1
0.44
0.82
1.36
1.68
2.15
2.55
3.13
3.51
4.03
5.77
6.50
7.44
9.29
10.6
12.0
14.5
16.4
17.0
19.2
19.5
21.8
23.5
24.2
26.5
30.0
42.5
47.6
66.3
74.1
83.2
90.9
98.3
105.2
0.46
0.86
1.43
1.76
2.26
2.68
3.29
3.69
4.24
6.07
6.83
7.82
9.77
11.2
12.6
15.3
17.3
17.9
20.2
20.5
23.0
24.7
25.4
27.8
31.6
44.8
50.0
69.7
77.9
87.3
95.4
103.0
110.2
0.49
0.93
1.54
1.89
2.43
2.87
3.53
3.96
4.55
6.51
7.33
8.39
10.5
12.0
13.5
16.4
18.5
19.2
21.7
22.0
24.7
26.5
27.3
29.9
33.9
48.0
53.7
74.7
83.4
93.4
102.0
109.9
117.3
0.53
0.99
1.64
2.02
2.59
3.07
3.77
4.23
4.86
6.96
7.83
8.97
11.2
12.8
14.4
17.5
19.8
20.5
23.2
23.5
26.3
28.3
29.2
31.9
36.2
51.3
57.3
79.6
88.8
99.4
108.3
116.6
0.55
1.03
1.71
2.11
2.70
3.20
3.93
4.40
5.07
7.25
8.16
9.34
11.7
13.4
15.0
18.3
20.6
21.4
24.2
24.5
27.5
29.5
30.4
33.3
37.8
53.4
59.7
82.9
92.4
103.3
112.5
120.9
0.58
1.09
1.82
2.23
2.86
3.39
4.16
4.67
5.37
7.69
8.66
9.91
12.4
14.2
15.9
19.4
21.9
22.7
25.6
25.9
29.1
31.3
32.2
35.3
40.0
56.6
63.2
87.6
97.6
109.0
118.5
0.61
1.15
1.92
2.36
3.03
3.58
4.40
4.93
5.68
8.12
9.14
10.5
13.1
15.0
16.8
20.5
23.1
24.0
27.1
27.4
30.8
33.1
34.0
37.2
42.3
59.7
66.7
92.3
102.7
114.5
0.66
1.24
2.05
2.53
3.24
3.84
4.71
5.28
6.08
8.70
9.79
11.2
14.0
16.0
18.0
21.9
24.7
25.7
29.0
29.3
32.9
35.4
36.4
39.9
45.2
63.9
71.3
98.4
109.4
121.6
0.69
1.30
2.16
2.65
3.40
4.03
4.94
5.54
6.38
9.13
10.3
11.8
14.7
16.8
18.9
23.0
26.0
26.9
30.4
30.8
34.5
37.1
38.2
41.8
47.4
66.9
74.7
102.9
114.2
0.73
1.38
2.29
2.82
3.61
4.28
5.25
5.89
6.78
9.69
10.9
12.5
15.6
17.9
20.1
24.4
27.6
28.6
32.3
32.7
36.7
39.4
40.6
44.4
50.3
71.0
79.2
108.8
120.5
0.78
1.46
2.42
2.98
3.82
4.53
5.56
6.23
7.17
10.3
11.5
13.2
16.5
18.9
21.3
25.8
29.2
30.3
34.1
34.6
38.8
41.7
42.9
46.9
53.2
75.0
83.5
114.4
126.5
0.82
1.54
2.56
3.14
4.03
4.78
5.86
6.57
7.56
10.8
12.2
13.9
17.4
19.9
22.4
27.2
30.7
31.9
36.0
36.4
40.9
43.9
45.2
49.4
56.1
78.9
87.9
119.9
0.87
1.64
2.72
3.35
4.29
5.08
6.24
7.00
8.05
11.5
13.0
14.8
18.5
21.2
23.8
29.0
32.7
33.9
38.3
38.7
43.5
46.7
48.1
52.6
59.6
83.7
93.2
126.6
0.39
0.74
1.22
1.50
1.93
2.28
2.80
3.14
3.61
5.17
5.82
6.66
8.32
9.52
10.7
13.0
14.7
15.2
17.2
17.4
19.5
21.0
21.6
23.7
26.9
38.1
42.6
59.4
66.4
74.6
81.7
88.4
94.8
RPM OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.00
0.00
0.00
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.05
0.06
0.07
0.08
0.08
0.10
0.10
0.11
0.12
0.13
0.14
0.16
0.25
0.28
0.42
0.49
0.56
0.63
0.70
0.77
1.12
to
1.19
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.05
0.06
0.07
0.08
0.10
0.11
0.14
0.16
0.17
0.19
0.20
0.23
0.25
0.25
0.28
0.33
0.49
0.56
0.85
0.97
1.13
1.27
1.41
1.55
1.20
to
1.30
0.00
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.07
0.08
0.10
0.13
0.15
0.17
0.21
0.24
0.25
0.29
0.30
0.34
0.37
0.38
0.42
0.49
0.74
0.85
1.27
1.46
1.69
1.90
2.11
2.33
1.31
to
1.45
0.01
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.07
0.10
0.11
0.13
0.17
0.20
0.23
0.28
0.32
0.34
0.39
0.39
0.45
0.49
0.51
0.56
0.65
0.99
1.13
1.69
1.94
2.25
2.54
2.82
3.10
1.46
to
1.65
0.01
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.12
0.14
0.16
0.21
0.25
0.28
0.35
0.41
0.42
0.49
0.49
0.56
0.61
0.63
0.70
0.82
1.23
1.41
2.11
2.43
2.82
3.17
3.52
3.87
1.66
to
1.99
2.00
to
2.63
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.10
0.15
0.17
0.20
0.25
0.30
0.34
0.42
0.49
0.51
0.58
0.59
0.68
0.74
0.76
0.85
0.98
1.48
1.69
2.54
2.92
3.38
3.80
4.23
4.65
0.01
0.02
0.03
0.04
0.06
0.07
0.09
0.10
0.12
0.17
0.20
0.23
0.30
0.35
0.39
0.49
0.57
0.59
0.68
0.69
0.79
0.86
0.89
0.99
1.14
1.73
1.97
2.96
3.40
3.95
4.44
4.93
5.43
2.64
to
4.47
0.01
0.02
0.04
0.05
0.07
0.08
0.10
0.11
0.13
0.20
0.23
0.26
0.34
0.39
0.45
0.56
0.65
0.68
0.78
0.79
0.90
0.98
1.01
1.13
1.31
1.97
2.25
3.38
3.89
4.51
5.07
5.64
6.20
4.48
and
Over
0.01
0.03
0.04
0.06
0.07
0.09
0.11
0.13
0.15
0.22
0.25
0.30
0.38
0.44
0.51
0.63
0.73
0.76
0.88
0.89
1.01
1.10
1.14
1.27
1.47
2.22
2.54
3.80
4.38
5.07
5.71
6.34
6.97
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
8MGT-640
8MGT-720
8MGT-800
8MGT-896
8MGT-1000
8MGT-1120
8MGT-1200
8MGT-1280
8MGT-1440
8MGT-1600
8MGT-1792
8MGT-2000
8MGT-2240
8MGT-2400
8MGT-2520
8MGT-2840
8MGT-3200
8MGT-3600
8MGT-4000
8MGT-4480
80
90
100
112
125
140
150
160
180
200
224
250
280
300
315
355
400
450
500
560
0.79
0.83
0.87
0.91
0.96
1.00
1.03
1.05
1.10
1.14
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
64
R
RPM
OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
22
2.206
0.40
0.74
1.23
1.51
1.94
2.29
2.81
3.15
3.62
5.16
5.80
6.63
8.27
9.46
10.6
12.9
14.5
15.1
17.0
17.2
19.3
20.7
21.3
23.3
26.4
37.3
41.7
58.1
65.0
73.2
80.3
87.1
93.7
25
2.506
28
2.807
30
3.008
32
3.208
34
3.409
36
3.609
38
3.810
40
4.010
42
4.211
45
4.511
48
4.812
50
5.013
53
5.314
56
5.614
60
6.015
63
6.316
67
6.717
71
7.118
75
7.519
80
8.020
0.46
0.86
1.42
1.75
2.24
2.65
3.25
3.64
4.18
5.98
6.72
7.69
9.60
11.0
12.3
15.0
16.9
17.5
19.8
20.0
22.4
24.1
24.8
27.2
30.8
43.5
48.7
67.9
76.0
85.6
93.9
101.8
109.5
0.52
0.97
1.61
1.98
2.54
3.00
3.68
4.13
4.75
6.79
7.63
8.73
10.9
12.5
14.0
17.0
19.2
19.9
22.5
22.8
25.6
27.5
28.3
30.9
35.1
49.7
55.5
77.5
86.8
97.7
107.1
116.2
124.9
0.56
1.05
1.73
2.13
2.73
3.24
3.97
4.45
5.12
7.32
8.24
9.43
11.8
13.5
15.1
18.4
20.8
21.5
24.3
24.6
27.6
29.7
30.5
33.4
37.9
53.7
60.1
83.9
93.9
105.6
115.8
125.5
134.8
0.60
1.12
1.86
2.29
2.93
3.47
4.26
4.77
5.49
7.85
8.83
10.1
12.6
14.5
16.2
19.7
22.3
23.1
26.1
26.4
29.6
31.9
32.8
35.9
40.7
57.7
64.5
90.1
100.8
113.4
124.2
134.6
144.5
0.63
1.19
1.98
2.44
3.13
3.70
4.54
5.09
5.86
8.38
9.43
10.8
13.5
15.4
17.3
21.1
23.8
24.7
27.9
28.2
31.7
34.0
35.0
38.3
43.5
61.6
68.9
96.2
107.7
121.0
132.6
143.6
154.0
0.67
1.27
2.11
2.59
3.32
3.93
4.82
5.41
6.22
8.90
10.0
11.5
14.3
16.4
18.4
22.4
25.3
26.2
29.6
30.0
33.7
36.2
37.2
40.8
46.3
65.5
73.3
102.3
114.4
128.5
140.7
152.3
163.3
0.71
1.34
2.23
2.74
3.51
4.16
5.11
5.73
6.59
9.42
10.6
12.1
15.2
17.4
19.5
23.7
26.8
27.8
31.4
31.8
35.6
38.3
39.5
43.2
49.0
69.4
77.6
108.3
121.1
136.0
148.8
160.9
172.3
0.75
1.41
2.35
2.89
3.70
4.39
5.39
6.04
6.95
9.94
11.2
12.8
16.0
18.3
20.6
25.0
28.3
29.3
33.1
33.5
37.6
40.4
41.6
45.6
51.7
73.3
81.9
114.2
127.6
143.2
156.6
169.2
181.1
0.79
1.49
2.47
3.04
3.90
4.61
5.66
6.35
7.31
10.5
11.8
13.5
16.8
19.3
21.7
26.3
29.7
30.9
34.8
35.3
39.6
42.5
43.8
47.9
54.4
77.1
86.2
120.0
134.1
150.4
164.3
177.4
189.7
0.85
1.60
2.65
3.26
4.18
4.95
6.08
6.82
7.84
11.2
12.6
14.5
18.1
20.7
23.3
28.3
31.9
33.1
37.4
37.9
42.5
45.7
47.0
51.5
58.4
82.7
92.5
128.7
143.6
160.9
175.6
189.3
202.1
0.90
1.70
2.83
3.48
4.46
5.29
6.49
7.28
8.37
12.0
13.5
15.4
19.3
22.1
24.8
30.2
34.1
35.4
39.9
40.4
45.4
48.8
50.2
55.0
62.4
88.3
98.7
137.1
153.0
171.2
186.5
200.8
0.94
1.77
2.95
3.63
4.65
5.51
6.76
7.58
8.73
12.5
14.1
16.1
20.1
23.0
25.9
31.5
35.5
36.9
41.6
42.1
47.3
50.8
52.3
57.3
65.0
92.0
102.8
142.7
159.1
177.9
193.7
208.2
1.00
1.88
3.13
3.85
4.93
5.84
7.17
8.04
9.25
13.2
14.9
17.1
21.3
24.4
27.5
33.4
37.7
39.1
44.1
44.7
50.1
53.9
55.5
60.7
68.9
97.5
108.9
151.0
168.1
187.7
204.0
1.06
1.99
3.30
4.06
5.21
6.17
7.58
8.50
9.78
14.0
15.7
18.0
22.5
25.8
29.0
35.2
39.8
41.3
46.6
47.2
53.0
56.9
58.6
64.1
72.8
102.9
114.9
159.0
176.9
197.2
1.13
2.13
3.54
4.35
5.58
6.61
8.11
9.10
10.5
15.0
16.9
19.3
24.1
27.6
31.0
37.7
42.6
44.2
49.9
50.5
56.7
60.9
62.7
68.7
77.9
110.0
122.8
169.5
188.3
209.4
1.19
2.23
3.71
4.57
5.86
6.93
8.51
9.55
11.0
15.7
17.7
20.3
25.3
29.0
32.6
39.6
44.7
46.4
52.3
53.0
59.5
63.9
65.8
72.0
81.7
115.3
128.6
177.2
196.7
1.26
2.37
3.94
4.85
6.22
7.37
9.05
10.1
11.7
16.7
18.8
21.5
26.9
30.8
34.6
42.0
47.5
49.3
55.6
56.3
63.1
67.9
69.9
76.4
86.7
122.2
136.3
187.3
207.4
1.34
2.51
4.17
5.13
6.58
7.80
9.57
10.7
12.3
17.7
19.9
22.8
28.4
32.6
36.6
44.5
50.2
52.1
58.8
59.5
66.8
71.8
73.9
80.8
91.6
129.1
143.9
197.1
217.9
1.41
2.65
4.40
5.41
6.94
8.22
10.1
11.3
13.0
18.6
21.0
24.0
30.0
34.3
38.6
46.9
52.9
54.9
62.0
62.7
70.4
75.6
77.8
85.1
96.5
135.8
151.3
206.6
1.50
2.82
4.69
5.76
7.39
8.75
10.7
12.0
13.9
19.8
22.3
25.5
31.9
36.5
41.1
49.9
56.3
58.4
65.9
66.7
74.8
80.4
82.8
90.5
102.6
144.2
160.4
218.0
RPM OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
4500
5000
5500
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.00
0.00
0.01
0.01
0.01
0.02
0.02
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.10
0.12
0.14
0.15
0.17
0.17
0.19
0.21
0.22
0.24
0.28
0.42
0.49
0.73
0.84
0.97
1.09
1.21
1.33
1.12
to
1.19
0.00
0.01
0.02
0.02
0.03
0.03
0.04
0.05
0.06
0.08
0.10
0.11
0.15
0.17
0.19
0.24
0.28
0.29
0.34
0.34
0.39
0.42
0.44
0.49
0.56
0.85
0.97
1.46
1.68
1.94
2.19
2.43
2.67
1.20
to
1.30
0.01
0.01
0.03
0.03
0.04
0.05
0.06
0.07
0.09
0.13
0.15
0.17
0.22
0.25
0.29
0.36
0.42
0.44
0.50
0.51
0.58
0.63
0.66
0.73
0.84
1.27
1.46
2.18
2.51
2.91
3.28
3.64
4.00
1.31
to
1.45
0.01
0.02
0.03
0.04
0.06
0.07
0.09
0.10
0.11
0.17
0.19
0.23
0.29
0.34
0.39
0.49
0.56
0.58
0.67
0.68
0.78
0.84
0.87
0.97
1.13
1.70
1.94
2.91
3.35
3.88
4.37
4.85
5.34
1.46
to
1.65
1.66
to
1.99
0.01
0.02
0.04
0.05
0.07
0.08
0.11
0.12
0.14
0.21
0.24
0.28
0.36
0.42
0.49
0.61
0.70
0.73
0.84
0.85
0.97
1.06
1.09
1.21
1.41
2.12
2.43
3.64
4.19
4.85
5.46
6.07
6.67
0.01
0.03
0.05
0.06
0.08
0.10
0.13
0.15
0.17
0.25
0.29
0.34
0.44
0.51
0.58
0.73
0.84
0.87
1.00
1.02
1.16
1.27
1.31
1.46
1.69
2.55
2.91
4.37
5.02
5.82
6.55
7.28
8.01
2.00
to
2.63
0.02
0.03
0.06
0.07
0.10
0.12
0.15
0.17
0.20
0.30
0.34
0.40
0.51
0.59
0.68
0.85
0.98
1.02
1.17
1.19
1.36
1.48
1.53
1.70
1.97
2.97
3.40
5.10
5.86
6.80
7.64
8.49
9.34
2.64
to
4.47
0.02
0.04
0.07
0.09
0.11
0.14
0.17
0.19
0.23
0.34
0.39
0.45
0.58
0.68
0.78
0.97
1.12
1.16
1.34
1.36
1.55
1.69
1.75
1.94
2.25
3.40
3.88
5.82
6.70
7.76
8.74
9.71
10.7
4.48
and
Over
0.02
0.04
0.08
0.10
0.13
0.15
0.19
0.22
0.26
0.38
0.44
0.51
0.66
0.76
0.87
1.09
1.26
1.31
1.51
1.53
1.75
1.90
1.97
2.18
2.53
3.82
4.37
6.55
7.53
8.74
9.83
10.9
12.0
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
8MGT-640
8MGT-720
8MGT-800
8MGT-896
8MGT-1000
8MGT-1120
8MGT-1200
8MGT-1280
8MGT-1440
8MGT-1600
8MGT-1792
8MGT-2000
8MGT-2240
8MGT-2400
8MGT-2520
8MGT-2840
8MGT-3200
8MGT-3600
8MGT-4000
8MGT-4480
80
90
100
112
125
140
150
160
180
200
224
250
280
300
315
355
400
450
500
560
0.79
0.83
0.87
0.91
0.96
1.00
1.03
1.05
1.10
1.14
1.18
1.22
1.26
1.29
1.31
1.36
1.40
1.45
1.49
1.53
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
R
65
RPM
OF
FASTER 28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
SHAFT 4.912 5.088 5.263 5.439 5.614 5.790 5.965 6.141 6.316 6.492 6.667 6.842 7.018 7.544 7.895 8.421 8.772 9.299 9.825 10.527 11.053 11.755 12.457 13.158 14.036
10 0.50 0.52 0.54 0.56 0.58 0.60 0.62 0.64 0.66 0.68 0.70 0.72 0.74 0.80 0.84 0.90 0.94 1.00 1.06 1.14 1.19
20 0.94 0.98 1.02 1.06 1.10 1.14 1.18 1.21 1.25 1.29 1.33 1.37 1.41 1.52 1.60 1.71 1.79 1.90 2.01 2.16 2.27
35 1.57 1.64 1.71 1.77 1.84 1.90 1.97 2.03 2.10 2.16 2.23 2.29 2.35 2.55 2.67 2.86 2.99 3.18 3.37 3.62 3.80
44 1.94 2.02 2.10 2.18 2.27 2.35 2.43 2.51 2.59 2.67 2.75 2.83 2.91 3.14 3.30 3.54 3.69 3.93 4.16 4.47 4.70
58 2.50 2.60 2.71 2.81 2.92 3.02 3.12 3.23 3.33 3.43 3.54 3.64 3.74 4.05 4.25 4.56 4.76 5.06 5.36 5.76 6.05
70 2.96 3.09 3.21 3.34 3.46 3.59 3.71 3.83 3.96 4.08 4.20 4.32 4.44 4.81 5.05 5.41 5.65 6.01 6.37 6.84 7.19
88 3.65 3.80 3.96 4.11 4.26 4.42 4.57 4.72 4.87 5.03 5.18 5.33 5.48 5.93 6.23 6.67 6.97 7.41 7.85 8.43 8.87
100 4.10 4.27 4.44 4.62 4.79 4.96 5.13 5.31 5.48 5.65 5.82 5.99 6.15 6.66 7.00 7.50 7.83 8.33 8.82 9.48 9.97
117 4.72 4.93 5.12 5.33 5.52 5.72 5.92 6.12 6.32 6.51 6.71 6.90 7.10 7.69 8.07 8.65 9.04 9.61 10.2 10.9 11.5
175 6.80 7.09 7.38 7.67 7.95 8.24 8.53 8.82 9.10 9.39 9.67 9.95 10.2 11.1 11.6 12.5 13.0 13.9 14.7 15.8 16.6
200 7.67 7.99 8.32 8.65 8.97 9.30 9.62 9.95 10.3 10.6 10.9 11.2 11.6 12.5 13.1 14.1 14.7 15.7 16.6 17.8 18.7
233 8.79 9.17 9.55 9.93 10.3 10.7 11.0 11.4 11.8 12.2 12.5 12.9 13.3 14.4 15.1 16.2 16.9 18.0 19.0 20.5 21.5
300 11.0 11.5 12.0 12.5 12.9 13.4 13.9 14.3 14.8 15.3 15.7 16.2 16.7 18.0 19.0 20.3 21.2 22.6 23.9 25.7 27.1
350 12.7 13.2 13.8 14.3 14.8 15.4 15.9 16.5 17.0 17.5 18.1 18.6 19.1 20.7 21.8 23.4 24.4 26.0 27.5 29.6 31.1
400 14.3 14.9 15.5 16.1 16.7 17.3 18.0 18.6 19.2 19.8 20.4 21.0 21.6 23.4 24.6 26.3 27.5 29.3 31.0 33.3 35.1
500 17.4 18.2 18.9 19.7 20.4 21.2 21.9 22.7 23.4 24.2 24.9 25.6 26.4 28.6 30.0 32.2 33.6 35.8 37.9 40.7 42.8
575 19.7 20.6 21.4 22.3 23.1 24.0 24.8 25.7 26.5 27.4 28.2 29.0 29.9 32.4 34.0 36.5 38.1 40.5 43.0 46.2 48.6
600 20.5 21.4 22.3 23.1 24.0 24.9 25.8 26.7 27.6 28.4 29.3 30.2 31.0 33.6 35.3 37.9 39.6 42.1 44.6 48.0 50.4
690 23.2 24.2 25.2 26.2 27.2 28.2 29.2 30.2 31.2 32.2 33.2 34.2 35.1 38.1 40.0 42.9 44.8 47.7 50.5 54.3 57.1
700 23.5 24.5 25.5 26.5 27.6 28.6 29.6 30.6 31.6 32.6 33.6 34.6 35.6 38.6 40.5 43.5 45.4 48.3 51.2 55.0 57.9
800 26.4 27.6 28.7 29.9 31.0 32.2 33.3 34.4 35.6 36.7 37.8 39.0 40.1 43.4 45.6 48.9 51.1 54.4 57.6 61.9 65.1
870 28.4 29.7 30.9 32.2 33.4 34.6 35.9 37.1 38.3 39.5 40.8 42.0 43.2 46.8 49.2 52.7 55.1 58.6 62.1 66.7 70.1
900 29.3 30.6 31.9 33.1 34.4 35.7 37.0 38.2 39.5 40.7 42.0 43.2 44.5 48.2 50.7 54.3 56.7 60.4 64.0 68.7 72.2
1000 32.1 33.5 35.0 36.4 37.8 39.2 40.6 42.0 43.3 44.7 46.1 47.5 48.8 52.9 55.6 59.6 62.3 66.2 70.2 75.4 79.2
1160 36.6 38.2 39.8 41.4 43.0 44.6 46.2 47.8 49.4 50.9 52.5 54.1 55.6 60.3 63.3 67.9 70.9 75.4 79.9 85.8 90.2
1750 52.3 54.6 56.9 59.2 61.5 63.8 66.1 68.3 70.6 72.8 75.0 77.3 79.5 86.1 90.4 96.8 101.1 107.4 113.6 121.8 127.8
2000 58.6 61.2 63.8 66.4 69.0 71.5 74.1 76.6 79.1 81.6 84.1 86.6 89.1 96.4 101.2 108.4 113.1 120.1 126.9 135.9 142.5
3000 82.4 86.0 89.7 93.3 96.8 100.4 103.9 107.4 110.8 114.2 117.6 121.0 124.4 134.2 140.7
3450 92.3 96.4 100.4 104.4 108.3 112.3 116.2 120.0 123.8 127.6 131.3 135.0 138.7
4000 103.8 108.3 112.8 117.2 121.6 125.9 130.2 134.4 138.6
RPM OF
FASTER
SHAFT
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.00
0.01
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.06
0.07
0.08
0.10
0.11
0.13
0.16
0.19
0.20
0.22
0.23
0.26
0.28
0.29
0.33
0.38
0.57
0.65
0.98
1.12
1.30
1.12
to
1.19
0.01
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.11
0.13
0.15
0.20
0.23
0.26
0.33
0.37
0.39
0.45
0.46
0.52
0.57
0.59
0.65
0.76
1.14
1.30
1.96
2.25
2.61
1.20
to
1.30
0.01
0.02
0.03
0.04
0.06
0.07
0.09
0.10
0.11
0.17
0.20
0.23
0.29
0.34
0.39
0.49
0.56
0.59
0.67
0.68
0.78
0.85
0.88
0.98
1.13
1.71
1.95
2.93
3.37
3.91
1.31
to
1.45
0.01
0.03
0.05
0.06
0.08
0.09
0.11
0.13
0.15
0.23
0.26
0.30
0.39
0.46
0.52
0.65
0.75
0.78
0.90
0.91
1.04
1.13
1.17
1.30
1.51
2.28
2.61
3.91
4.50
5.21
1.46
to
1.65
0.02
0.03
0.06
0.07
0.09
0.11
0.14
0.16
0.19
0.29
0.33
0.38
0.49
0.57
0.65
0.81
0.94
0.98
1.12
1.14
1.30
1.42
1.47
1.63
1.89
2.85
3.26
4.89
5.62
6.52
1.27 1.35 1.43 1.52
2.42 2.56 2.71 2.89
4.05 4.30 4.54 4.85
5.00 5.31 5.61 5.99
6.45 6.84 7.23 7.72
7.66 8.13 8.59 9.17
9.45 10.0 10.6 11.3
10.6 11.3 11.9 12.7
12.3 13.0 13.7 14.7
17.7 18.8 19.8 21.2
20.0 21.2 22.4 23.9
22.9 24.3 25.7 27.4
28.8 30.6 32.3 34.5
33.1 35.1 37.1 39.6
37.4 39.6 41.9 44.7
45.6 48.4 51.2 54.6
51.7 54.9 58.0 61.9
53.7 57.0 60.2 64.2
60.8 64.5 68.2 72.7
61.6 65.3 69.0 73.6
69.3 73.5 77.7 82.8
74.7 79.2 83.6 89.1
76.9 81.5 86.1 91.8
84.3 89.4 94.4 100.6
95.9 101.7 107.3 114.3
135.7 143.5 151.1 160.4
151.2 159.6
1.66
to
1.99
2.00
to
2.63
0.02
0.04
0.07
0.09
0.11
0.14
0.17
0.20
0.23
0.34
0.39
0.46
0.59
0.68
0.78
0.98
1.12
1.17
1.35
1.37
1.56
1.70
1.76
1.95
2.27
3.42
3.91
5.86
6.74
7.82
0.02
0.05
0.08
0.10
0.13
0.16
0.20
0.23
0.27
0.40
0.46
0.53
0.68
0.80
0.91
1.14
1.31
1.37
1.57
1.60
1.82
1.98
2.05
2.28
2.65
3.99
4.56
6.84
7.87
9.12
2.64
to
4.47
0.03
0.05
0.09
0.11
0.15
0.18
0.23
0.26
0.30
0.46
0.52
0.61
0.78
0.91
1.04
1.30
1.50
1.56
1.80
1.82
2.08
2.27
2.35
2.61
3.02
4.56
5.21
7.82
8.99
10.4
4.48
and
Over
0.03
0.06
0.10
0.13
0.17
0.21
0.26
0.29
0.34
0.51
0.59
0.68
0.88
1.03
1.17
1.47
1.69
1.76
2.02
2.05
2.35
2.55
2.64
2.93
3.40
5.13
5.86
8.80
10.1
11.7
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
14MGT-994
14MGT-1120
14MGT-1190
14MGT-1260
14MGT-1400
14MGT-1568
14MGT-1750
14MGT-1890
14MGT-1960
14MGT-2100
14MGT-2240
14MGT-2380
14MGT-2520
14MGT-2660
14MGT-2800
14MGT-3136
14MGT-3304
14MGT-3500
14MGT-3920
14MGT-4410
71
80
85
90
100
112
125
135
140
150
160
170
180
190
200
224
236
250
280
315
0.68
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
0.96
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
66
R
RPM
OF
FASTER 28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
SHAFT 4.912 5.088 5.263 5.439 5.614 5.790 5.965 6.141 6.316 6.492 6.667 6.842 7.018 7.544 7.895 8.421 8.772 9.299 9.825 10.527 11.053 11.755 12.457 13.158 14.036
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
0.92
1.74
2.91
3.59
4.62
5.48
6.75
7.58
8.74
12.6
14.2
16.3
20.4
23.4
26.4
32.2
36.5
37.9
42.9
43.4
48.8
52.6
54.2
59.4
67.7
96.7
108.4
152.4
170.8
192.0
0.96
1.82
3.03
3.74
4.81
5.71
7.04
7.90
9.11
13.1
14.8
17.0
21.3
24.4
27.5
33.6
38.1
39.5
44.7
45.3
51.0
54.9
56.6
62.1
70.7
101.0
113.3
159.2
178.3
200.4
1.00
1.89
3.16
3.89
5.01
5.94
7.32
8.22
9.48
13.6
15.4
17.7
22.2
25.5
28.7
35.0
39.6
41.2
46.6
47.2
53.1
57.2
58.9
64.7
73.7
105.3
118.1
165.9
185.8
208.7
1.03
1.96
3.28
4.04
5.20
6.18
7.61
8.54
9.85
14.2
16.0
18.4
23.0
26.5
29.8
36.4
41.2
42.8
48.5
49.1
55.3
59.5
61.3
67.3
76.6
109.6
122.8
172.5
193.2
216.9
1.07
2.03
3.40
4.19
5.39
6.40
7.89
8.86
10.2
14.7
16.6
19.1
23.9
27.5
31.0
37.8
42.8
44.5
50.3
51.0
57.4
61.8
63.7
69.9
79.6
113.8
127.6
179.1
200.5
225.0
1.11
2.10
3.52
4.34
5.59
6.63
8.17
9.18
10.6
15.3
17.2
19.7
24.8
28.5
32.1
39.2
44.4
46.1
52.2
52.9
59.5
64.1
66.0
72.5
82.6
118.0
132.3
185.7
207.7
233.0
1.15
2.18
3.64
4.49
5.78
6.86
8.45
9.50
11.0
15.8
17.8
20.4
25.7
29.5
33.2
40.6
45.9
47.7
54.0
54.7
61.6
66.4
68.4
75.0
85.5
122.2
137.0
192.2
214.9
240.9
1.18
2.25
3.76
4.64
5.97
7.09
8.74
9.81
11.3
16.3
18.4
21.1
26.5
30.5
34.4
41.9
47.5
49.4
55.9
56.6
63.7
68.6
70.7
77.6
88.4
126.4
141.7
198.6
222.0
248.7
1.22
2.32
3.88
4.79
6.16
7.32
9.02
10.1
11.7
16.8
19.0
21.8
27.4
31.5
35.5
43.3
49.1
51.0
57.7
58.5
65.8
70.9
73.0
80.2
91.3
130.6
146.3
205.0
229.0
256.4
1.26
2.39
4.00
4.93
6.35
7.55
9.30
10.4
12.1
17.4
19.6
22.5
28.3
32.5
36.6
44.7
50.6
52.6
59.6
60.3
67.9
73.2
75.4
82.7
94.3
134.7
151.0
211.4
236.0
1.30
2.46
4.12
5.08
6.54
7.77
9.58
10.8
12.4
17.9
20.2
23.2
29.1
33.4
37.7
46.1
52.2
54.2
61.4
62.2
70.0
75.4
77.7
85.3
97.1
138.8
155.6
217.6
242.9
1.33
2.53
4.24
5.23
6.73
8.00
9.85
11.1
12.8
18.4
20.8
23.9
30.0
34.4
38.8
47.4
53.7
55.8
63.2
64.0
72.1
77.6
80.0
87.8
100.0
142.9
160.2
223.9
249.8
1.37
2.60
4.36
5.37
6.92
8.22
10.1
11.4
13.1
18.9
21.4
24.5
30.8
35.4
39.9
48.8
55.3
57.4
65.0
65.9
74.2
79.9
82.3
90.3
102.9
147.0
164.8
230.1
256.5
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.01
0.01
0.02
0.03
0.03
0.04
0.05
0.06
0.07
0.11
0.12
0.14
0.18
0.21
0.24
0.30
0.35
0.36
0.42
0.42
0.48
0.52
0.54
0.60
0.70
1.05
1.21
1.81
2.08
2.41
1.12
to
1.19
0.01
0.02
0.04
0.05
0.07
0.08
0.11
0.12
0.14
0.21
0.24
0.28
0.36
0.42
0.48
0.60
0.69
0.72
0.83
0.84
0.97
1.05
1.09
1.21
1.40
2.11
2.41
3.62
4.16
4.83
1.20
to
1.30
0.02
0.04
0.06
0.08
0.10
0.13
0.16
0.18
0.21
0.32
0.36
0.42
0.54
0.63
0.72
0.90
1.04
1.08
1.25
1.27
1.45
1.57
1.63
1.81
2.10
3.16
3.62
5.42
6.24
7.23
1.31
to
1.45
0.02
0.05
0.08
0.11
0.14
0.17
0.21
0.24
0.28
0.42
0.48
0.56
0.72
0.84
0.96
1.21
1.39
1.45
1.66
1.69
1.93
2.10
2.17
2.41
2.80
4.22
4.82
7.23
8.32
9.64
1.46
to
1.65
1.66
to
1.99
0.03
0.06
0.11
0.13
0.17
0.21
0.27
0.30
0.35
0.53
0.60
0.70
0.90
1.05
1.21
1.51
1.73
1.81
2.08
2.11
2.41
2.62
2.71
3.01
3.50
5.27
6.03
9.04
10.4
12.1
0.04
0.07
0.13
0.16
0.21
0.25
0.32
0.36
0.42
0.63
0.72
0.84
1.08
1.27
1.45
1.81
2.08
2.17
2.50
2.53
2.89
3.15
3.25
3.62
4.20
6.33
7.23
10.8
12.5
14.5
1.56
2.95
4.95
6.11
7.87
9.34
11.5
12.9
14.9
21.5
24.3
27.9
35.1
40.3
45.5
55.5
62.9
65.4
74.0
75.0
84.4
91.0
93.7
102.9
117.2
167.2
187.3
260.3
1.67
3.16
5.30
6.54
8.43
10.0
12.3
13.9
16.0
23.1
26.1
29.9
37.6
43.2
48.7
59.5
67.5
70.1
79.4
80.4
90.5
97.5
100.5
110.3
125.6
179.2
200.5
1.74
3.30
5.53
6.83
8.80
10.5
12.9
14.5
16.7
24.1
27.2
31.3
39.3
45.1
50.9
62.2
70.5
73.2
82.9
84.0
94.6
101.9
105.0
115.2
131.2
187.0
209.2
1.85
3.51
5.88
7.26
9.36
11.1
13.7
15.4
17.8
25.6
29.0
33.3
41.8
48.0
54.2
66.2
75.0
77.9
88.3
89.4
100.6
108.4
111.7
122.6
139.6
198.7
222.1
1.96
3.72
6.23
7.69
9.91
11.8
14.5
16.3
18.8
27.2
30.7
35.2
44.3
50.9
57.4
70.1
79.5
82.6
93.5
94.7
106.6
114.8
118.3
129.8
147.8
210.2
234.8
2.10
3.99
6.69
8.26
10.6
12.7
15.6
17.5
20.2
29.2
33.0
37.9
47.6
54.7
61.7
75.4
85.4
88.7
100.5
101.8
114.6
123.4
127.1
139.4
158.7
225.3
251.5
2.21
4.20
7.04
8.69
11.2
13.3
16.4
18.4
21.3
30.7
34.7
39.8
50.1
57.5
64.9
79.3
89.8
93.3
105.7
107.0
120.5
129.7
133.7
146.6
166.8
236.5
263.7
2.35
4.47
7.50
9.25
11.9
14.2
17.5
19.6
22.7
32.7
36.9
42.4
53.3
61.3
69.1
84.4
95.7
99.4
112.5
114.0
128.3
138.1
142.3
156.0
177.5
251.1
279.7
2.50
4.74
7.95
9.82
12.7
15.0
18.5
20.8
24.1
34.7
39.2
45.0
56.6
65.0
73.3
89.6
101.5
105.4
119.4
120.9
136.0
146.5
150.9
165.4
188.1
265.5
295.3
2.64
5.02
8.41
10.4
13.4
15.9
19.6
22.0
25.4
36.7
41.4
47.6
59.8
68.7
77.5
94.7
107.3
111.4
126.1
127.7
143.7
154.7
159.4
174.7
198.5
279.6
2.82
5.35
8.97
11.1
14.3
17.0
20.9
23.5
27.1
39.2
44.2
50.8
63.8
73.3
82.7
101.0
114.4
118.8
134.5
136.2
153.2
164.9
169.9
186.1
211.4
296.8
RPM OF
FASTER
SHAFT
1.48
2.81
4.71
5.81
7.49
8.90
11.0
12.3
14.2
20.5
23.1
26.6
33.4
38.4
43.3
52.8
59.9
62.2
70.4
71.4
80.3
86.5
89.2
97.9
111.5
159.2
178.3
248.4
2.00
to
2.63
0.04
0.08
0.15
0.19
0.24
0.30
0.37
0.42
0.49
0.74
0.84
0.98
1.27
1.48
1.69
2.11
2.43
2.53
2.91
2.95
3.38
3.67
3.80
4.22
4.89
7.38
8.44
12.7
14.6
16.9
2.64
to
4.47
0.05
0.10
0.17
0.21
0.28
0.34
0.42
0.48
0.56
0.84
0.96
1.12
1.45
1.69
1.93
2.41
2.77
2.89
3.33
3.38
3.86
4.19
4.34
4.82
5.59
8.44
9.64
14.5
16.6
19.3
4.48
and
Over
0.05
0.11
0.19
0.24
0.31
0.38
0.48
0.54
0.63
0.95
1.08
1.26
1.63
1.90
2.17
2.71
3.12
3.25
3.74
3.80
4.34
4.72
4.88
5.42
6.29
9.49
10.8
16.3
18.7
21.7
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
14MGT-994
14MGT-1120
14MGT-1190
14MGT-1260
14MGT-1400
14MGT-1568
14MGT-1750
14MGT-1890
14MGT-1960
14MGT-2100
14MGT-2240
14MGT-2380
14MGT-2520
14MGT-2660
14MGT-2800
14MGT-3136
14MGT-3304
14MGT-3500
14MGT-3920
14MGT-4410
71
80
85
90
100
112
125
135
140
150
160
170
180
190
200
224
236
250
280
315
0.68
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
0.96
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
R
67
RPM
OF
FASTER 28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
SHAFT 4.912 5.088 5.263 5.439 5.614 5.790 5.965 6.141 6.316 6.492 6.667 6.842 7.018 7.544 7.895 8.421 8.772 9.299 9.825 10.527 11.053 11.755 12.457 13.158 14.036
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
1.69
3.20
5.35
6.60
8.49
10.1
12.4
13.9
16.1
23.1
26.1
29.9
37.5
43.1
48.5
59.2
67.0
69.6
78.8
79.8
89.8
96.7
99.6
109.2
124.4
177.7
199.3
280.1
313.9
353.0
1.76
3.34
5.58
6.88
8.85
10.5
12.9
14.5
16.7
24.1
27.2
31.2
39.1
44.9
50.6
61.8
70.0
72.6
82.2
83.3
93.7
100.9
104.0
114.1
129.9
185.7
208.2
292.6
327.7
368.4
1.83
3.47
5.80
7.15
9.20
10.9
13.5
15.1
17.4
25.1
28.3
32.5
40.7
46.8
52.7
64.3
72.9
75.7
85.7
86.8
97.6
105.1
108.3
118.9
135.4
193.5
217.0
304.8
341.4
383.5
1.90
3.60
6.02
7.43
9.56
11.3
14.0
15.7
18.1
26.1
29.4
33.7
42.4
48.6
54.8
66.9
75.8
78.7
89.1
90.2
101.6
109.4
112.7
123.7
140.9
201.4
225.8
317.1
355.0
398.6
1.97
3.73
6.25
7.70
9.91
11.8
14.5
16.3
18.8
27.0
30.5
35.0
44.0
50.5
56.9
69.5
78.7
81.7
92.5
93.7
105.5
113.6
117.0
128.4
146.3
209.1
234.5
329.2
368.4
413.5
2.04
3.87
6.47
7.98
10.3
12.2
15.0
16.9
19.5
28.0
31.6
36.3
45.6
52.3
59.0
72.0
81.6
84.7
95.9
97.2
109.4
117.8
121.4
133.2
151.7
216.9
243.2
341.2
381.8
428.2
2.11
4.00
6.69
8.25
10.6
12.6
15.5
17.5
20.1
29.0
32.7
37.6
47.2
54.2
61.1
74.5
84.4
87.7
99.3
100.6
113.2
122.0
125.7
137.9
157.1
224.6
251.8
353.2
394.9
442.7
2.18
4.13
6.91
8.52
11.0
13.0
16.1
18.0
20.8
30.0
33.8
38.8
48.8
56.0
63.1
77.1
87.3
90.7
102.7
104.0
117.1
126.1
130.0
142.6
162.5
232.3
260.4
365.0
408.0
457.1
2.25
4.26
7.13
8.79
11.3
13.4
16.6
18.6
21.5
30.9
34.9
40.1
50.3
57.8
65.2
79.6
90.2
93.7
106.1
107.5
121.0
130.3
134.3
147.3
167.9
240.0
269.0
376.8
421.0
471.2
2.31
4.39
7.35
9.07
11.7
13.9
17.1
19.2
22.1
31.9
36.0
41.3
51.9
59.7
67.3
82.1
93.1
96.7
109.5
110.9
124.8
134.4
138.5
152.0
173.2
247.6
277.5
388.5
433.8
2.38
4.52
7.57
9.34
12.0
14.3
17.6
19.8
22.8
32.9
37.1
42.6
53.5
61.5
69.3
84.6
95.9
99.6
112.8
114.3
128.6
138.6
142.8
156.7
178.5
255.2
286.0
400.0
446.5
2.45
4.65
7.79
9.61
12.4
14.7
18.1
20.4
23.5
33.8
38.2
43.8
55.1
63.3
71.3
87.1
98.7
102.6
116.2
117.6
132.5
142.7
147.0
161.3
183.8
262.7
294.4
411.5
459.0
2.52
4.78
8.01
9.88
12.7
15.1
18.6
20.9
24.1
34.8
39.3
45.1
56.7
65.1
73.4
89.6
101.6
105.5
119.5
121.0
136.3
146.8
151.3
166.0
189.1
270.2
302.8
422.9
471.5
2.72
5.17
8.66
10.7
13.8
16.4
20.2
22.6
26.1
37.7
42.5
48.8
61.4
70.5
79.5
97.1
110.0
114.3
129.5
131.1
147.7
159.0
163.9
179.9
204.9
292.6
327.7
456.4
2.86
5.43
9.09
11.2
14.5
17.2
21.2
23.8
27.4
39.6
44.7
51.3
64.5
74.1
83.5
102.1
115.7
120.1
136.1
137.8
155.2
167.2
172.3
189.0
215.4
307.4
344.2
478.4
3.06
5.81
9.74
12.0
15.5
18.4
22.7
25.5
29.4
42.4
47.9
55.0
69.1
79.4
89.6
109.4
124.0
128.8
145.9
147.8
166.4
179.2
184.7
202.7
230.9
329.3
368.5
3.20
6.07
10.2
12.6
16.2
19.2
23.7
26.6
30.7
44.3
50.0
57.5
72.2
83.0
93.6
114.3
129.6
134.6
152.4
154.4
173.9
187.3
193.0
211.7
241.2
343.7
384.5
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.01
0.02
0.04
0.05
0.06
0.08
0.10
0.11
0.13
0.19
0.22
0.26
0.33
0.39
0.44
0.55
0.64
0.66
0.76
0.78
0.89
0.96
1.00
1.11
1.28
1.94
2.21
3.32
3.82
4.43
1.12
to
1.19
0.02
0.04
0.08
0.10
0.13
0.16
0.20
0.22
0.26
0.39
0.44
0.52
0.67
0.78
0.89
1.11
1.27
1.33
1.53
1.55
1.77
1.93
2.00
2.22
2.57
3.88
4.43
6.65
7.65
8.87
1.20
to
1.30
0.03
0.07
0.12
0.15
0.19
0.23
0.29
0.33
0.39
0.58
0.66
0.77
1.00
1.16
1.33
1.66
1.91
1.99
2.29
2.33
2.66
2.89
2.99
3.32
3.86
5.82
6.65
9.97
11.5
13.3
1.31
to
1.45
0.04
0.09
0.16
0.19
0.26
0.31
0.39
0.44
0.52
0.78
0.89
1.03
1.33
1.55
1.77
2.22
2.55
2.66
3.06
3.10
3.54
3.85
3.99
4.43
5.14
7.75
8.86
13.3
15.3
17.7
1.46
to
1.65
0.06
0.11
0.19
0.24
0.32
0.39
0.49
0.55
0.65
0.97
1.11
1.29
1.66
1.94
2.22
2.77
3.18
3.32
3.82
3.88
4.43
4.82
4.98
5.54
6.43
9.69
11.1
16.6
19.1
22.2
3.60
6.83
11.5
14.1
18.2
21.6
26.7
30.0
34.6
49.9
56.4
64.8
81.4
93.5
105.5
128.9
146.1
151.7
171.9
174.1
196.0
211.1
217.5
238.6
271.7
386.3
431.6
3.86
7.34
12.3
15.2
19.6
23.3
28.7
32.2
37.2
53.7
60.6
69.6
87.5
100.5
113.4
138.5
157.0
163.1
184.7
187.0
210.6
226.8
233.6
256.3
291.7
414.1
462.2
4.06
7.72
12.9
16.0
20.6
24.5
30.2
33.9
39.1
56.4
63.7
73.2
92.0
105.7
119.2
145.7
165.1
171.5
194.2
196.7
221.4
238.4
245.6
269.4
306.6
434.6
484.6
4.33
8.22
13.8
17.0
21.9
26.0
32.1
36.1
41.7
60.1
67.9
78.0
98.0
112.6
127.0
155.2
175.8
182.7
206.8
209.5
235.8
253.9
261.5
286.8
326.2
461.6
514.0
4.59
8.72
14.6
18.0
23.3
27.6
34.1
38.3
44.2
63.8
72.0
82.7
104.0
119.5
134.8
164.6
186.5
193.7
219.4
222.2
250.0
269.2
277.3
304.0
345.7
488.0
542.7
4.85
9.22
15.4
19.1
24.6
29.2
36.0
40.5
46.7
67.4
76.1
87.4
109.9
126.3
142.4
174.0
197.1
204.7
231.8
234.8
264.1
284.3
292.9
321.0
364.9
513.8
RPM OF
FASTER
SHAFT
3.40
6.45
10.8
13.3
17.2
20.4
25.2
28.3
32.7
47.1
53.2
61.1
76.8
88.3
99.6
121.6
137.9
143.2
162.2
164.3
185.0
199.2
205.3
225.2
256.5
365.2
408.3
1.66
to
1.99
2.00
to
2.63
0.07
0.13
0.23
0.29
0.39
0.47
0.58
0.66
0.78
1.16
1.33
1.55
1.99
2.33
2.66
3.32
3.82
3.99
4.59
4.65
5.32
5.78
5.98
6.65
7.71
11.6
13.3
19.9
22.9
26.6
0.08
0.16
0.27
0.34
0.45
0.54
0.68
0.78
0.91
1.36
1.55
1.81
2.33
2.71
3.10
3.88
4.46
4.65
5.35
5.43
6.20
6.75
6.98
7.75
9.00
13.6
15.5
23.3
26.8
31.0
2.64
to
4.47
0.09
0.18
0.31
0.39
0.51
0.62
0.78
0.89
1.04
1.55
1.77
2.06
2.66
3.10
3.54
4.43
5.10
5.32
6.11
6.20
7.09
7.71
7.98
8.86
10.3
15.5
17.7
26.6
30.6
35.4
4.48
and
Over
0.10
0.20
0.35
0.44
0.58
0.70
0.88
1.00
1.17
1.74
1.99
2.32
2.99
3.49
3.99
4.98
5.73
5.98
6.88
6.98
7.98
8.67
8.97
9.97
11.6
17.4
19.9
29.9
34.4
39.9
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
14MGT-994
14MGT-1120
14MGT-1190
14MGT-1260
14MGT-1400
14MGT-1568
14MGT-1750
14MGT-1890
14MGT-1960
14MGT-2100
14MGT-2240
14MGT-2380
14MGT-2520
14MGT-2660
14MGT-2800
14MGT-3136
14MGT-3304
14MGT-3500
14MGT-3920
14MGT-4410
71
80
85
90
100
112
125
135
140
150
160
170
180
190
200
224
236
250
280
315
0.68
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
0.96
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
68
R
5.18
9.84
16.5
20.4
26.2
31.2
38.4
43.2
49.9
72.0
81.3
93.3
117.3
134.8
152.0
185.7
210.3
218.4
247.2
250.4
281.6
303.1
312.2
342.1
388.6
545.5
RPM
OF
FASTER 28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
SHAFT 4.912 5.088 5.263 5.439 5.614 5.790 5.965 6.141 6.316 6.492 6.667 6.842 7.018 7.544 7.895 8.421 8.772 9.299 9.825 10.527 11.053 11.755 12.457 13.158 14.036
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
2.24
4.24
7.08
8.73
11.2
13.3
16.4
18.4
21.3
30.6
34.5
39.6
49.7
57.0
64.2
78.3
88.7
92.1
104.3
105.6
118.8
127.9
131.8
144.6
164.7
235.2
263.8
370.8
415.5
467.2
2.33
4.42
7.38
9.10
11.7
13.9
17.1
19.2
22.2
31.9
36.0
41.3
51.8
59.5
67.0
81.8
92.6
96.2
108.8
110.2
124.0
133.6
137.6
151.0
172.0
245.7
275.5
387.2
433.8
487.6
2.42
4.59
7.68
9.47
12.2
14.5
17.8
20.0
23.1
33.2
37.4
43.0
53.9
61.9
69.8
85.2
96.4
100.2
113.4
114.8
129.2
139.2
143.4
157.3
179.2
256.1
287.2
403.5
451.9
507.6
2.52
4.77
7.97
9.83
12.7
15.0
18.5
20.8
24.0
34.5
38.9
44.7
56.1
64.4
72.6
88.6
100.3
104.2
117.9
119.4
134.4
144.8
149.2
163.7
186.4
266.5
298.8
419.7
469.9
527.6
2.61
4.94
8.27
10.2
13.1
15.6
19.2
21.6
24.9
35.8
40.4
46.4
58.2
66.8
75.3
91.9
104.1
108.1
122.4
124.0
139.6
150.3
154.9
170.0
193.6
276.8
310.3
435.7
487.6
547.2
2.70
5.12
8.56
10.6
13.6
16.1
19.9
22.3
25.8
37.1
41.9
48.0
60.3
69.3
78.1
95.3
108.0
112.1
127.0
128.6
144.8
155.9
160.6
176.3
200.8
287.1
321.9
451.7
505.3
566.7
2.79
5.29
8.85
10.9
14.1
16.7
20.6
23.1
26.6
38.4
43.3
49.7
62.4
71.7
80.8
98.7
111.8
116.1
131.5
133.1
149.9
161.4
166.3
182.5
207.9
297.3
333.3
467.4
522.7
585.9
2.88
5.47
9.15
11.3
14.5
17.2
21.3
23.9
27.5
39.7
44.8
51.4
64.5
74.1
83.6
102.0
115.6
120.1
136.0
137.7
155.0
167.0
172.0
188.8
215.1
307.5
344.7
483.2
540.1
605.0
2.97
5.64
9.44
11.6
15.0
17.8
21.9
24.6
28.4
41.0
46.2
53.1
66.6
76.5
86.3
105.4
119.4
124.0
140.4
142.2
160.1
172.4
177.7
195.0
222.2
317.6
356.0
498.7
557.2
623.7
3.06
5.81
9.73
12.0
15.5
18.4
22.6
25.4
29.3
42.2
47.7
54.7
68.7
79.0
89.0
108.7
123.2
127.9
144.9
146.7
165.2
177.9
183.4
201.2
229.3
327.7
367.3
514.2
574.2
3.15
5.98
10.0
12.4
15.9
18.9
23.3
26.2
30.2
43.5
49.1
56.4
70.8
81.4
91.7
112.0
126.9
131.8
149.3
151.2
170.3
183.4
189.0
207.4
236.3
337.7
378.5
529.4
591.0
3.24
6.16
10.3
12.7
16.4
19.5
24.0
26.9
31.1
44.8
50.5
58.0
72.9
83.8
94.4
115.3
130.7
135.7
153.7
155.7
175.3
188.8
194.6
213.6
243.3
347.7
389.6
544.6
607.6
3.33
6.33
10.6
13.1
16.8
20.0
24.7
27.7
32.0
46.1
52.0
59.7
75.0
86.2
97.1
118.7
134.4
139.7
158.2
160.2
180.4
194.3
200.2
219.7
250.3
357.7
400.8
559.7
624.1
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.01
0.03
0.05
0.06
0.09
0.10
0.13
0.15
0.17
0.26
0.29
0.34
0.44
0.51
0.59
0.73
0.84
0.88
1.01
1.03
1.17
1.28
1.32
1.47
1.70
2.56
2.93
4.40
5.06
5.86
1.12
to
1.19
0.03
0.06
0.10
0.13
0.17
0.21
0.26
0.29
0.34
0.51
0.59
0.68
0.88
1.03
1.17
1.47
1.69
1.76
2.02
2.05
2.35
2.55
2.64
2.93
3.40
5.14
5.87
8.80
10.1
11.7
1.20
to
1.30
0.04
0.09
0.15
0.19
0.26
0.31
0.39
0.44
0.51
0.77
0.88
1.02
1.32
1.54
1.76
2.20
2.53
2.64
3.04
3.08
3.52
3.83
3.96
4.40
5.10
7.70
8.80
13.2
15.2
17.6
1.31
to
1.45
0.06
0.12
0.21
0.26
0.34
0.41
0.52
0.59
0.69
1.03
1.17
1.37
1.76
2.05
2.35
2.93
3.37
3.52
4.05
4.10
4.69
5.10
5.28
5.86
6.80
10.3
11.7
17.6
20.2
23.5
1.46
to
1.65
1.66
to
1.99
0.07
0.15
0.26
0.32
0.43
0.51
0.65
0.73
0.86
1.28
1.47
1.71
2.20
2.57
2.93
3.67
4.22
4.40
5.06
5.13
5.86
6.38
6.60
7.33
8.50
12.8
14.7
22.0
25.3
29.3
0.09
0.18
0.31
0.39
0.51
0.62
0.77
0.88
1.03
1.54
1.76
2.05
2.64
3.08
3.52
4.40
5.06
5.28
6.07
6.16
7.04
7.65
7.92
8.80
10.2
15.4
17.6
26.4
30.3
35.2
3.78
7.19
12.0
14.9
19.1
22.7
28.0
31.5
36.3
52.4
59.1
67.9
85.3
98.0
110.6
135.1
153.1
159.0
180.1
182.4
205.4
221.2
228.0
250.2
285.0
406.8
455.5
633.1
4.05
7.70
12.9
15.9
20.5
24.4
30.0
33.7
38.9
56.2
63.4
72.8
91.5
105.1
118.5
144.8
164.1
170.5
193.1
195.6
220.3
237.2
244.5
268.3
305.6
435.8
487.7
4.23
8.03
13.5
16.6
21.4
25.4
31.4
35.2
40.7
58.7
66.2
76.0
95.6
109.8
123.8
151.3
171.5
178.1
201.8
204.4
230.1
247.9
255.4
280.2
319.2
454.9
508.9
4.50
8.54
14.3
17.7
22.8
27.0
33.3
37.5
43.2
62.4
70.4
80.9
101.7
116.8
131.8
161.0
182.5
189.5
214.7
217.4
244.8
263.7
271.7
298.1
339.5
483.4
540.3
4.76
9.05
15.2
18.7
24.1
28.6
35.3
39.7
45.8
66.1
74.6
85.7
107.7
123.8
139.6
170.6
193.3
200.8
227.5
230.4
259.4
279.4
287.8
315.8
359.6
511.3
571.2
5.11
9.72
16.3
20.1
25.9
30.8
38.0
42.7
49.2
71.0
80.2
92.1
115.8
133.0
150.1
183.3
207.8
215.8
244.4
247.6
278.7
300.1
309.2
339.2
386.1
548.1
611.7
5.38
10.2
17.1
21.1
27.2
32.4
39.9
44.9
51.8
74.7
84.3
96.9
121.8
139.9
157.8
192.8
218.5
227.0
257.0
260.3
293.0
315.6
325.1
356.6
405.8
575.3
641.5
5.72
10.9
18.2
22.5
29.0
34.5
42.5
47.8
55.1
79.6
89.8
103.2
129.7
149.1
168.1
205.4
232.7
241.7
273.8
277.3
312.1
336.0
346.2
379.6
431.8
610.9
680.4
6.07
11.5
19.3
23.9
30.8
36.6
45.1
50.7
58.5
84.4
95.3
109.5
137.6
158.2
178.4
217.9
246.9
256.4
290.3
294.1
330.9
356.2
367.0
402.4
457.5
645.8
718.4
6.42
12.2
20.4
25.2
32.5
38.7
47.7
53.6
61.8
89.3
100.8
115.7
145.5
167.2
188.5
230.3
260.9
271.0
306.8
310.7
349.6
376.3
387.6
424.9
482.9
680.1
6.85
13.0
21.8
26.9
34.7
41.3
50.9
57.2
66.0
95.3
107.5
123.5
155.3
178.4
201.2
245.7
278.4
289.1
327.2
331.4
372.8
401.2
413.2
452.8
514.3
721.9
RPM OF
FASTER
SHAFT
3.60
6.84
11.5
14.1
18.2
21.6
26.7
30.0
34.6
49.9
56.3
64.6
81.2
93.3
105.2
128.5
145.6
151.3
171.4
173.6
195.4
210.5
216.9
238.1
271.2
387.3
433.8
604.1
2.00
to
2.63
0.10
0.21
0.36
0.45
0.60
0.72
0.90
1.03
1.20
1.80
2.05
2.39
3.08
3.59
4.11
5.13
5.90
6.16
7.08
7.18
8.21
8.93
9.24
10.3
11.9
18.0
20.5
30.8
35.4
41.1
2.64
to
4.47
0.12
0.23
0.41
0.52
0.68
0.82
1.03
1.17
1.37
2.05
2.35
2.73
3.52
4.10
4.69
5.86
6.74
7.04
8.09
8.21
9.38
10.2
10.6
11.7
13.6
20.5
23.5
35.2
40.5
46.9
4.48
and
Over
0.13
0.26
0.46
0.58
0.77
0.92
1.16
1.32
1.54
2.31
2.64
3.07
3.96
4.62
5.28
6.60
7.59
7.92
9.10
9.24
10.6
11.5
11.9
13.2
15.3
23.1
26.4
39.6
45.5
52.8
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
14MGT-994
14MGT-1120
14MGT-1190
14MGT-1260
14MGT-1400
14MGT-1568
14MGT-1750
14MGT-1890
14MGT-1960
14MGT-2100
14MGT-2240
14MGT-2380
14MGT-2520
14MGT-2660
14MGT-2800
14MGT-3136
14MGT-3304
14MGT-3500
14MGT-3920
14MGT-4410
71
80
85
90
100
112
125
135
140
150
160
170
180
190
200
224
236
250
280
315
0.68
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
0.96
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
R
69
RPM
OF
FASTER 28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
SHAFT 4.912 5.088 5.263 5.439 5.614 5.790 5.965 6.141 6.316 6.492 6.667 6.842 7.018 7.544 7.895 8.421 8.772 9.299 9.825 10.527 11.053 11.755 12.457 13.158 14.036
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
3.11
5.89
9.84
12.1
15.6
18.5
22.8
25.6
29.5
42.5
47.9
55.0
69.0
79.2
89.2
108.8
123.2
127.9
144.8
146.7
165.0
177.7
183.1
200.8
228.7
326.7
366.3
515.0
577.0
648.8
3.24
6.14
10.3
12.6
16.3
19.3
23.8
26.7
30.8
44.3
50.0
57.3
71.9
82.6
93.1
113.6
128.6
133.5
151.2
153.1
172.3
185.5
191.1
209.7
238.8
341.3
382.7
537.8
602.5
677.2
3.37
6.38
10.7
13.1
16.9
20.1
24.7
27.8
32.0
46.1
52.0
59.7
74.9
86.0
96.9
118.3
133.9
139.1
157.5
159.5
179.5
193.3
199.2
218.5
248.9
355.7
398.8
560.4
627.6
705.1
3.49
6.62
11.1
13.7
17.6
20.9
25.7
28.9
33.3
47.9
54.1
62.0
77.9
89.4
100.8
123.0
139.3
144.7
163.8
165.9
186.7
201.1
207.2
227.3
258.9
370.1
415.0
582.9
652.6
732.8
3.62
6.87
11.5
14.2
18.2
21.6
26.7
29.9
34.5
49.7
56.1
64.4
80.8
92.8
104.6
127.7
144.6
150.2
170.1
172.2
193.9
208.8
215.1
236.1
268.9
384.4
431.0
605.1
677.2
760.0
3.75
7.11
11.9
14.7
18.9
22.4
27.6
31.0
35.8
51.5
58.1
66.7
83.8
96.2
108.4
132.4
150.0
155.7
176.3
178.6
201.1
216.5
223.1
244.8
278.9
398.7
447.0
627.3
701.8
787.1
3.88
7.35
12.3
15.2
19.5
23.2
28.6
32.1
37.0
53.3
60.2
69.0
86.7
99.6
112.2
137.0
155.2
161.2
182.6
184.9
208.2
224.2
231.0
253.5
288.8
412.9
462.9
649.2
726.0
813.8
4.00
7.59
12.7
15.7
20.2
24.0
29.5
33.2
38.2
55.1
62.2
71.4
89.6
103.0
116.1
141.7
160.5
166.7
188.8
191.2
215.3
231.9
238.9
262.2
298.7
427.1
478.8
671.0
750.1
840.2
4.13
7.83
13.1
16.2
20.8
24.7
30.5
34.2
39.5
56.9
64.2
73.7
92.5
106.3
119.8
146.3
165.8
172.2
195.0
197.5
222.4
239.5
246.8
270.8
308.6
441.1
494.4
692.6
773.8
866.2
4.26
8.07
13.5
16.7
21.5
25.5
31.4
35.3
40.7
58.7
66.2
76.0
95.5
109.7
123.6
151.0
171.1
177.7
201.2
203.8
229.5
247.1
254.7
279.5
318.4
455.1
510.1
714.1
797.5
4.38
8.31
13.9
17.2
22.1
26.3
32.4
36.4
41.9
60.4
68.2
78.3
98.4
113.0
127.4
155.6
176.3
183.1
207.4
210.0
236.5
254.7
262.5
288.1
328.2
469.1
525.7
735.3
820.8
4.51
8.55
14.3
17.7
22.7
27.0
33.3
37.4
43.2
62.2
70.2
80.6
101.3
116.3
131.2
160.2
181.5
188.5
213.5
216.3
243.5
262.3
270.3
296.6
337.9
482.9
541.2
756.4
843.8
4.63
8.79
14.7
18.2
23.4
27.8
34.2
38.5
44.4
64.0
72.2
82.9
104.2
119.7
134.9
164.8
186.7
194.0
219.7
222.5
250.5
269.9
278.1
305.2
347.7
496.8
556.6
777.4
866.8
5.01
9.51
15.9
19.6
25.3
30.1
37.0
41.6
48.0
69.3
78.2
89.8
112.8
129.6
146.1
178.5
202.3
210.1
238.0
241.1
271.4
292.4
301.3
330.6
376.7
537.9
602.4
839.1
5.26
9.98
16.7
20.6
26.6
31.6
38.9
43.7
50.5
72.8
82.1
94.3
118.5
136.2
153.6
187.6
212.6
220.8
250.1
253.4
285.3
307.3
316.6
347.5
395.9
565.0
632.6
879.4
5.63
10.7
17.9
22.1
28.5
33.8
41.7
46.9
54.1
78.0
88.0
101.1
127.1
146.0
164.6
201.2
228.0
236.8
268.2
271.7
305.9
329.5
339.5
372.6
424.4
605.3
677.3
5.87
11.2
18.7
23.1
29.7
35.3
43.5
48.9
56.5
81.5
92.0
105.6
132.7
152.5
172.0
210.2
238.2
247.4
280.2
283.8
319.6
344.2
354.7
389.2
443.3
631.9
706.8
10
20
35
44
58
70
88
100
117
175
200
233
300
350
400
500
575
600
690
700
800
870
900
1000
1160
1750
2000
3000
3450
4000
1.00
to
1.04
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.05
to
1.11
0.02
0.04
0.07
0.09
0.12
0.14
0.18
0.20
0.24
0.36
0.41
0.47
0.61
0.71
0.81
1.02
1.17
1.22
1.40
1.42
1.63
1.77
1.83
2.04
2.36
3.56
4.07
6.11
7.02
8.14
1.12
to
1.19
0.04
0.08
0.14
0.18
0.24
0.29
0.36
0.41
0.48
0.71
0.82
0.95
1.22
1.43
1.63
2.04
2.34
2.45
2.81
2.85
3.26
3.55
3.67
4.08
4.73
7.13
8.15
12.2
14.1
16.3
1.20
to
1.30
0.06
0.12
0.21
0.27
0.35
0.43
0.54
0.61
0.71
1.07
1.22
1.42
1.83
2.14
2.44
3.05
3.51
3.67
4.22
4.28
4.89
5.32
5.50
6.11
7.09
10.7
12.2
18.3
21.1
24.4
1.31
to
1.45
0.08
0.16
0.29
0.36
0.47
0.57
0.72
0.81
0.95
1.43
1.63
1.90
2.44
2.85
3.26
4.07
4.68
4.89
5.62
5.70
6.52
7.09
7.33
8.14
9.45
14.3
16.3
24.4
28.1
32.6
1.46
to
1.65
0.10
0.20
0.36
0.45
0.59
0.71
0.90
1.02
1.19
1.78
2.04
2.37
3.05
3.56
4.07
5.09
5.85
6.11
7.03
7.13
8.15
8.86
9.16
10.2
11.8
17.8
20.4
30.5
35.1
40.7
6.61
12.6
21.1
26.0
33.5
39.8
49.1
55.1
63.6
91.8
103.6
119.0
149.6
172.0
193.9
236.9
268.5
278.9
315.9
320.0
360.3
388.0
399.8
438.6
499.4
710.2
793.4
7.10
13.5
22.6
27.9
36.0
42.7
52.7
59.2
68.4
98.7
111.4
127.9
160.8
184.8
208.4
254.6
288.6
299.7
339.5
343.8
387.1
416.8
429.5
471.1
536.2
761.3
849.6
7.47
14.2
23.8
29.4
37.8
45.0
55.4
62.3
71.9
103.8
117.1
134.5
169.1
194.4
219.2
267.8
303.5
315.2
357.0
361.6
407.0
438.3
451.5
495.3
563.6
799.0
890.9
7.95
15.1
25.3
31.3
40.3
47.9
59.0
66.4
76.6
110.5
124.8
143.3
180.2
207.0
233.5
285.3
323.3
335.8
380.2
385.1
433.4
466.7
480.8
527.2
599.7
848.5
944.9
8.43
16.0
26.9
33.2
42.7
50.8
62.6
70.4
81.3
117.3
132.4
152.1
191.1
219.7
247.7
302.6
342.9
356.2
403.3
408.4
459.6
494.8
509.7
558.8
635.4
897.0
997.7
8.91
16.9
28.4
35.1
45.2
53.7
66.2
74.4
85.9
124.0
140.0
160.7
202.0
232.2
261.8
319.9
362.4
376.4
426.1
431.6
485.5
522.6
538.4
590.1
670.7
944.5
RPM OF
FASTER
SHAFT
6.24
11.9
19.9
24.5
31.6
37.6
46.3
52.0
60.1
86.7
97.8
112.3
141.2
162.3
183.0
223.6
253.4
263.2
298.2
302.0
340.0
366.2
377.3
414.0
471.5
671.3
750.5
1.66
to
1.99
2.00
to
2.63
0.12
0.24
0.43
0.54
0.71
0.86
1.08
1.22
1.43
2.14
2.44
2.85
3.67
4.28
4.89
6.11
7.03
7.33
8.43
8.55
9.77
10.6
11.0
12.2
14.2
21.4
24.4
36.7
42.2
48.9
0.14
0.29
0.50
0.63
0.83
1.00
1.25
1.43
1.67
2.49
2.85
3.32
4.28
4.99
5.70
7.13
8.20
8.55
9.84
9.98
11.4
12.4
12.8
14.3
16.5
24.9
28.5
42.8
49.2
57.0
2.64
to
4.47
0.16
0.33
0.57
0.72
0.94
1.14
1.43
1.63
1.91
2.85
3.26
3.80
4.89
5.70
6.52
8.14
9.37
9.77
11.2
11.4
13.0
14.2
14.7
16.3
18.9
28.5
32.6
48.9
56.2
65.2
4.48
and
Over
0.18
0.37
0.64
0.81
1.06
1.28
1.61
1.83
2.14
3.21
3.67
4.27
5.50
6.41
7.33
9.16
10.5
11.0
12.6
12.8
14.7
15.9
16.5
18.3
21.3
32.1
36.7
55.0
63.2
73.3
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
14MGT-994
14MGT-1120
14MGT-1190
14MGT-1260
14MGT-1400
14MGT-1568
14MGT-1750
14MGT-1890
14MGT-1960
14MGT-2100
14MGT-2240
14MGT-2380
14MGT-2520
14MGT-2660
14MGT-2800
14MGT-3136
14MGT-3304
14MGT-3500
14MGT-3920
14MGT-4410
71
80
85
90
100
112
125
135
140
150
160
170
180
190
200
224
236
250
280
315
0.68
0.73
0.75
0.77
0.81
0.85
0.89
0.92
0.94
0.96
0.99
1.01
1.03
1.05
1.07
1.12
1.14
1.16
1.20
1.25
Reducer Speed Ratio
Up to 5:1
5:1
7.5:1
10:1
15:1
30:1
40:1
50:1
Use a belt drive
350
233
175
117
58
44
35
70
R
9.51
18.1
30.3
37.4
48.2
57.3
70.7
79.4
91.7
132.3
149.4
171.6
215.6
247.8
279.4
341.3
386.6
401.5
454.5
460.3
517.7
557.2
573.9
628.9
714.3
1002.7
Poly Chain® GT®2 Sprocket Specifications
Type A
Type B
F
F
CL
CL
M
F-CL
F-CL
E
D
B
A O.D.
O.D.
M
C
C
Type AF
Type BF
Type C
Type 6
F
CL
F
M
F-CL
CL
E
F-CL
D
D
B
A
O.D.
A
B
O.D.
E
C
C
Type 6F
Type CF
R
71
Stock 8mm Poly Chain® GT®2 Sprocket Specifications
(All stock sprockets conform to the metallurgical and mechanical properties noted
in ASTM A48 for Gray Iron castings and ASTM A536 for Ductile Iron castings.)
Diameters (in)
Sprocket
Number
Number
of
Teeth
Pitch
8MX-22S-12
8MX-22S-12-PB
8MX-25S-12
8MX-25S-12-PB
8MX-28S-12
8MX-28S-12-PB
8MX-30S-12
8MX-30S-12-PB
8MX-32S-12
8MX-32S-12-PB
8MX-34S-12
8MX-36S-12
8MX-38S-12
8MX-40S-12
8MX-42S-12
8MX-45S-12
8MX-48S-12
8MX-50S-12
8MX-53S-12
8MX-56S-12
8MX-60S-12
8MX-63S-12
8MX-67S-12
8MX-71S-12
8MX-75S-12
8MX-80S-12
8MX-90S-12
8MX-112S-12
8MX-140S-12
8MX-180S-12
8MX-224S-12
22
22
25
25
28
28
30
30
32
32
34
36
38
40
42
45
48
50
53
56
60
63
67
71
75
80
90
112
140
180
224
2.206
2.206
2.506
2.506
2.807
2.807
3.008
3.008
3.208
3.208
3.409
3.609
3.810
4.010
4.211
4.511
4.812
5.013
5.314
5.614
6.015
6.316
6.717
7.118
7.519
8.020
9.023
11.229
14.036
18.046
22.457
Material Spec :
S - Steel
Pitch
8MX-22S-21
8MX-22S-21-PB
8MX-25S-21
8MX-25S-21-PB
8MX-28S-21
8MX-28S-21-PB
8MX-30S-21
8MX-30S-21-PB
8MX-32S-21
8MX-32S-21-PB
8MX-34S-21
8MX-36S-21
8MX-38S-21
8MX-40S-21
8MX-42S-21
8MX-45S-21
8MX-48S-21
8MX-50S-21
8MX-53S-21
8MX-56S-21
8MX-60S-21
8MX-63S-21
8MX-67S-21
8MX-71S-21
8MX-75S-21
8MX-80S-21
8MX-90S-21
8MX-112S-21
8MX-140S-21
8MX-180S-21
8MX-224S-21
22
22
25
25
28
28
30
30
32
32
34
36
38
40
42
45
48
50
53
56
60
63
67
71
75
80
90
112
140
180
224
2.206
2.206
2.506
2.506
2.807
2.807
3.008
3.008
3.208
3.208
3.409
3.609
3.810
4.010
4.211
4.511
4.812
5.013
5.314
5.614
6.015
6.316
6.717
7.118
7.519
8.020
9.023
11.229
14.036
18.046
22.457
72
•
2.143
2.143
2.443
2.443
2.744
2.744
2.945
2.945
3.145
3.145
3.346
3.546
3.747
3.947
4.148
4.448
4.749
4.950
5.251
5.551
5.952
6.253
6.654
7.055
7.456
7.957
8.960
11.166
13.973
17.983
22.394
2.610
2.610
2.910
2.910
3.210
3.210
3.410
3.410
3.610
3.610
3.810
4.010
4.210
4.410
4.910
4.910
5.210
5.410
5.500
6.010
6.410
6.720
6.870
7.500
7.920
8.420
—
—
—
—
—
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
AF-1
AF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
CF-1
CF-1
CF-1
CF-1
CF-1
C-2
C-2
C-3
C-3
C-3
A
0.00
—
0.00
—
0.00
—
0.00
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5.71
6.14
6.51
6.90
7.23
8.05
10.25
11.96
15.80
20.17
B
C
—
1.79
—
2.08
—
2.34
—
2.54
—
2.73
—
—
—
3.56
3.76
3.76
3.76
3.76
3.76
3.76
3.76
4.00
4.00
4.00
4.00
4.00
4.00
4.00
4.38
4.88
4.88
0.60
0.57
0.60
0.57
0.60
0.57
0.60
0.57
0.72
0.57
0.72
0.72
0.72
0.57
0.57
0.57
0.57
0.57
0.57
0.57
0.57
0.57
0.57
0.57
0.57
0.57
—
—
—
—
—
G - Grey Iron
D
0.88
1.31
0.88
1.31
0.88
1.31
0.88
1.42
1.00
1.42
1.00
1.00
1.00
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.75
1.75
E
F
M
—
0.46
—
0.46
—
0.46
—
0.57
0.88
0.85
0.88
0.85
0.88
0.85
0.88
0.85
1.00
0.85
1.00
1.00
1.00
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.85
0.01
0
0.01
0
0.01
0
0.01
0
0
0
0
0
0
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.40
0.90
0.90
—
0.57
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
D - Ductile Iron
S - Steel
F-CL
Bushing
Size
Bore Sizes
Min
Max
0.44
1008 0.500 1.000
0.43
MPB
0.500 1.188
0.44
1108 0.500 1.125
0.43
MPB
0.500 1.500
0.44
1108 0.500 1.125
0.43
MPB
0.500 1.750
0.44
1108 0.500 1.125
0.43
MPB
0.500 1.813
0.50
1210 0.500 1.250
0.43
MPB
0.500 2.000
0.50
1610 0.500 1.688
0.50
1610 0.500 1.688
0.50
1610 0.500 1.688
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2012 0.500 2.125
0.43
2517 0.500 2.688
0.43
2517 0.500 2.688
Design Type Suffix: 1 - Solid
Diameters (in)
Number
of
Teeth
NOTES:
O.D
Design
Type
SS - Sintered Steel
Sprocket
Number
Material Spec :
Dimensions (in)
Flange
Ref.
Approx.
Wt. (lb)
Approx.
WR2
Matl.
Spec.
0.4
0.002
D
1.0
0.004
D
0.6
0.004
G
1.4
0.006
D
0.9
0.007
G
1.8
0.011
D
1.1
0.009
G
2.2
0.015
D
1.2
0.012
D
2.5
0.020
D
1.1
0.014
D
1.4
0.019
G
1.7
0.025
G
1.7
0.031
D
2.1
0.042
G
2.6
0.055
G
3.4
0.081
G
3.7
0.094
G
4.7
0.132
G
5.4
0.165
G
6.3
0.217
G
4.1
0.140
G
4.3
0.164
G
4.7
0.199
G
5.1
0.239
G
5.8
0.323
G
8.0
0.563
G
12.0
1.405
G
17.0
3.176
G
26.6
8.146
G
37.0 17.98
G
2 - Web
3 - Arms
Dimensions (in)
O.D
Flange
Ref.
Design
Type
2.143
2.143
2.443
2.443
2.744
2.744
2.945
2.945
3.145
3.145
3.346
3.546
3.747
3.947
4.148
4.448
4.749
4.950
5.251
5.551
5.952
6.253
6.654
7.055
7.456
7.957
8.960
11.166
13.973
17.983
22.394
2.610
2.610
2.910
2.910
3.210
3.210
3.410
3.410
3.610
3.610
3.810
4.010
4.210
4.410
4.910
4.910
5.210
5.410
5.500
6.010
6.420
6.720
6.880
7.500
7.920
8.420
—
—
—
—
—
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
CF-1
CF-1
CF-1
CF-1
CF-1
C-2
C-2
C-3
C-3
C-3
SS - Sintered Steel
A
1.63
—
1.92
—
2.18
—
2.38
—
2.58
—
2.66
2.96
3.15
—
—
—
—
—
—
—
—
5.71
6.14
6.51
6.90
7.23
7.78
10.00
11.74
15.49
19.86
B
C
—
1.79
—
2.08
—
2.34
—
2.54
—
2.73
—
—
—
—
—
—
—
—
—
—
—
3.76
4.50
4.50
4.50
4.50
4.50
4.50
4.88
6.25
6.25
0.92
0.92
0.92
0.92
0.92
0.92
0.92
0.92
0.92
0.92
0.92
0.92
0.92
0.97
0.97
0.97
0.97
0.97
0.97
0.97
0.97
0.92
0.92
0.92
0.92
0.92
—
—
—
—
—
G - Grey Iron
D
0.88
1.65
0.88
1.65
0.88
1.65
0.88
1.77
1.00
1.77
1.00
1.00
1.00
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.75
1.75
1.75
1.75
1.75
1.75
1.75
2.00
2.00
F
M
—
0.45
—
0.45
—
0.45
—
0.57
—
0.57
—
—
—
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
0.33
0
0.33
0
0.33
0
0.33
0
0.20
0
0.20
0.20
0.20
0
0
0
0
0
0
0
0
0.05
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.80
0.80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
D - Ductile Iron
Weights for Minimum Plain Bore (MPB) Sprockets are with
minimum bore.
R
E
F-CL
Bushing
Size
Bore Sizes
Min
Max
0.60
1008 0.500 1.000
0.60
MPB
0.500 1.188
0.60
1108 0.500 1.125
0.60
MPB
0.500 1.500
0.60
1108 0.500 1.125
0.60
MPB
0.500 1.750
0.60
1108 0.500 1.125
0.60
MPB
0.500 1.813
0.60
1210 0.500 1.250
0.60
MPB
0.500 2.000
0.60
1610 0.500 1.688
0.60
1610 0.500 1.688
0.60
1610 0.500 1.688
0.63
2012 0.500 2.125
0.63
2012 0.500 2.125
0.63
2012 0.500 2.125
0.63
2012 0.500 2.125
0.63
2012 0.500 2.125
0.63
2012 0.500 2.125
0.63
2012 0.500 2.125
0.63
2012 0.500 2.125
0.60
2012 0.500 2.125
0.60
2517 0.500 2.688
0.60
2517 0.500 2.688
0.60
2517 0.500 2.688
0.60
2517 0.500 2.688
0.60
2517 0.500 2.688
0.60
2517 0.500 2.688
0.60
2517 0.500 2.688
0.60
3020 0.875 3.250
0.60
3020 0.875 3.250
Design Type Suffix: 1 - Solid
•
•
Approx.
Wt. (lb)
Approx.
WR2
Matl.
Spec.
0.6
0.002
D
1.3
0.005
D
0.8
0.005
G
1.8
0.009
D
1.0
0.008
G
2.3
0.014
D
1.3
0.011
G
2.8
0.020
D
1.4
0.015
D
3.2
0.026
D
1.4
0.018
D
1.6
0.023
D
1.9
0.030
G
2.0
0.037
D
2.4
0.048
G
3.0
0.067
G
3.7
0.092
G
4.2
0.111
G
5.0
0.145
G
5.8
0.184
G
6.9
0.247
G
4.1
0.154
G
5.7
0.232
G
6.1
0.275
G
6.5
0.323
G
7.5
0.432
G
11.0
0.825
G
16.0
1.892
G
24.1
4.707
G
39.0 12.02
G
53.4 26.34
G
2 - Web
3 - Arms
Weights and WR2 for Bushed Sprockets do not include bushings.
WR2 values have lb-ft2 units.
Stock 8mm Poly Chain® GT®2 Sprocket Specifications—continued
Diameters (in)
Sprocket
Number
Number
of
Teeth
Pitch
8MX-22S-36-PB
8MX-25S-36-PB
8MX-28S-36-PB
8MX-30S-36-PB
8MX-32S-36
8MX-32S-36-PB
8MX-34S-36
8MX-34S-36-PB
8MX-36S-36
8MX-36S-36-PB
8MX-38S-36
8MX-38S-36-PB
8MX-40S-36
8MX-42S-36
8MX-45S-36
8MX-48S-36
8MX-50S-36
8MX-53S-36
8MX-56S-36
8MX-60S-36
8MX-63S-36
8MX-67S-36
8MX-71S-36
8MX-75S-36
8MX-80S-36
8MX-90S-36
8MX-112S-36
8MX-140S-36
8MX-180S-36
8MX-224S-36
22
25
28
30
32
32
34
34
36
36
38
38
40
42
45
48
50
53
56
60
63
67
71
75
80
90
112
140
180
224
2.206
2.506
2.807
3.008
3.208
3.208
3.409
3.409
3.609
3.609
3.810
3.810
4.010
4.211
4.511
4.812
5.013
5.314
5.614
6.015
6.316
6.717
7.118
7.519
8.020
9.023
11.229
14.036
18.046
22.457
Dimensions (in)
O.D
Flange
Ref.
Design
Type
2.143
2.443
2.744
2.945
3.145
3.145
3.346
3.346
3.546
3.546
3.747
3.747
3.947
4.148
4.448
4.749
4.950
5.251
5.551
5.952
6.253
6.654
7.055
7.456
7.957
8.960
11.166
13.973
17.983
22.394
2.610
2.910
3.210
3.410
3.610
3.610
3.810
3.810
4.010
4.010
4.210
4.210
4.410
4.910
4.910
5.210
5.410
5.500
6.010
6.420
6.720
6.880
7.500
7.920
8.420
—
—
—
—
—
6F-1
—
1.79
1.58
2.44
6F-1
—
2.08
1.58
2.44
6F-1
—
2.34
1.58
2.44
6F-1
—
2.54
1.58
2.44
AF-1
2.58
—
1.58
1.00
6F-1
—
2.73
1.58
2.44
AF-1
2.66
—
1.58
1.00
6F-1
—
2.82
1.58
2.45
AF-1
2.96
—
1.58
1.00
6F-1
—
3.13
1.58
2.51
AF-1
3.15
—
1.58
1.00
6F-1
—
3.32
1.58
2.51
AF-1
3.35
—
1.58
1.25
AF-1
3.62
—
1.58
1.25
AF-1
3.62
—
1.58
1.25
AF-1
4.14
—
1.58
1.25
AF-1
4.13
—
1.58
1.25
AF-1
4.76
—
1.58
1.25
AF-1
4.92
—
1.58
1.25
AF-1
5.13
—
1.58
1.75
AF-1
5.71
—
1.58
1.75
DF-1
5.98 4.25
1.58
1.75
DF-1
6.39 4.25
1.58
1.75
DF-1
6.79 4.25
1.58
1.75
BF-1
—
5.75
1.58
2.00
B-1
—
5.75
—
2.00
—
C-2
9.80 5.75
—
2.00
C-3
11.72 6.25
—
2.00
C-3
15.31 6.25
—
2.00
C-3
19.62 8.75
—
2.50
A
B
C
D
E
Pitch
O.D
Flange
Ref.
8MX-22S-62-PB
8MX-25S-62-PB
8MX-28S-62-PB
8MX-30S-62-PB
8MX-32S-62-PB
8MX-34S-62
8MX-34S-62-PB
8MX-36S-62
8MX-36S-62-PB
8MX-38S-62
8MX-38S-62-PB
8MX-40S-62
8MX-40S-62-PB
8MX-42S-62
8MX-42S-62-PB
8MX-45S-62
8MX-45S-62-PB
8MX-48S-62
8MX-50S-62
8MX-53S-62
8MX-56S-62
8MX-60S-62
8MX-63S-62
8MX-67S-62
8MX-71S-62
8MX-75S-62
8MX-80S-62
8MX-90S-62
8MX-112S-62
8MX-140S-62
8MX-180S-62
8MX-224S-62
22
25
28
30
32
34
34
36
36
38
38
40
40
42
42
45
45
48
50
53
56
60
63
67
71
75
80
90
112
140
180
224
2.206
2.506
2.807
3.008
3.208
3.409
3.409
3.609
3.609
3.810
3.810
4.010
4.010
4.211
4.211
4.511
4.511
4.812
5.013
5.314
5.614
6.015
6.316
6.717
7.118
7.519
8.020
9.023
11.229
14.036
18.046
22.457
2.143
2.443
2.744
2.945
3.145
3.346
3.346
3.546
3.546
3.747
3.747
3.947
3.947
4.148
4.148
4.448
4.448
4.749
4.950
5.251
5.551
5.952
6.253
6.654
7.055
7.456
7.957
8.960
11.166
13.973
17.983
22.394
2.610
2.910
3.210
3.410
3.610
3.810
3.810
4.010
4.010
4.210
4.210
4.410
4.410
4.910
4.910
4.910
4.910
5.210
5.410
5.500
6.010
6.420
6.720
6.880
7.500
7.920
8.420
—
—
—
—
—
•
Bushing
Size
Bore Sizes
Min
Max
Approx.
Wt. (lb)
Approx.
WR2
2.0
0.008
2.7
0.013
3.4
0.021
3.9
0.029
1.7
0.02
4.5
0.038
1.8
0.026
5.1
0.047
2.1
0.032
5.9
0.063
2.4
0.04
6.7
0.079
2.5
0.049
2.8
0.061
3.8
0.09
4.3
0.114
5.1
0.143
5.5
0.169
6.5
0.221
8.9
0.352
10.4
0.556
6.5
0.307
7.0
0.365
7.3
0.423
17.9
1.202
24.2
1.982
22.7
2.768
36.2
7.29
54.4 18.67
91.1 42.40
Matl.
Spec.
D
D
D
D
D
D
D
D
D
D
D
D
D
D
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
Dimensions (in)
Design
Type
A
6F-1
—
6F-1
—
6F-1
—
6F-1
—
6F-1
—
AF-1
2.66
6F-1
—
AF-1
2.96
6F-1
—
AF-1
3.15
6F-1
—
AF-1
3.35
6F-1
—
AF-1
3.62
6F-1
—
AF-1
3.62
6F-1
—
AF-1
4.14
AF-1
4.13
AF-1
4.76
AF-1
4.92
AF-1
5.13
AF-1
5.71
AF-1
6.14
AF-1
6.51
AF-1
6.90
AF-1
7.23
D-1
7.39
D-2
9.60
D-2
12.40
D-3
15.33
D-3
19.38
B
C
D
E
F
1.79
2.08
2.34
2.54
2.73
—
2.82
—
3.13
—
3.32
—
3.52
—
3.79
—
3.79
—
—
—
—
—
—
—
—
—
—
5.42
5.42
8.75
8.75
8.75
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
2.63
—
—
—
—
—
3.56
3.56
3.56
3.50
3.50
1.00
3.50
1.00
3.56
1.00
3.56
1.25
3.63
1.25
3.63
1.25
3.63
1.75
1.75
1.75
1.75
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.50
2.50
2.50
0.65
0.65
0.65
0.58
0.59
—
0.59
—
0.65
—
0.65
—
0.72
—
0.72
—
0.72
—
—
—
—
—
—
—
—
—
—
2.91
2.91
2.91
2.92
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
2.91
—
—
—
—
—
Material Spec : S - Steel SS - Sintered Steel G - Grey Iron D - Ductile Iron
NOTES:
F-CL
Design Type Suffix: 1 - Solid 2 - Web 3 - Arms
Diameters (in)
Number
of
Teeth
M
0.58
1.86
0
0.93
MPB
0.500 1.188
0.58
1.86
0
0.93
MPB
0.500 1.500
0.58
1.86
0
0.93
MPB
0.500 1.750
0.58
1.86
0
0.93
MPB
0.500 1.813
—
1.86
0.86
0.93
1210 0.500 1.250
0.58
1.86
0
0.93
MPB
0.500 2.000
—
1.86
0.86
0.93
1610 0.500 1.688
0.59
1.86
0
0.93
MPB
0.500 2.125
—
1.86
0.86
0.93
1610 0.500 1.688
0.65
1.86
0
0.93
MPB
0.500 2.313
—
1.86
0.86
0.93
1610 0.500 1.688
0.65
1.86
0
0.93
MPB
0.500 2.438
—
1.86
0.61
0.93
2012 0.500 2.125
—
1.86
0.61
0.93
2012 0.500 2.125
—
1.86
0.61
0.93
2012 0.500 2.125
—
1.86
0.61
0.93
2012 0.500 2.125
—
1.86
0.61
0.93
2012 0.500 2.125
—
1.86
0.61
0.93
2012 0.500 2.125
—
1.86
0.61
0.93
2012 0.500 2.125
—
1.86
0.11
0.93
2517 0.500 2.688
—
1.86
0.11
0.93
2517 0.500 2.688
—
1.86
0.11
0.93
2517 0.500 2.688
—
1.86
0.11
0.93
2517 0.500 2.688
—
1.86
0.11
0.93
2517 0.500 2.688
—
1.86
0.14
0.93
3020 0.875 3.250
1.86
0.14
0.93
3020 0.875 3.250
—
1.86
0.14
0.93
3020 0.875 3.250
—
1.86
0.14
0.93
3020 0.875 3.250
—
1.86
0.14
0.93
3020 0.875 3.250
—
1.86
0.64
0.93
3525 1.188 3.938
Sprocket
Number
F
minimum bore.
R
M
0
0
0
0
0
1.91
0
1.91
0
1.91
0
1.66
0
1.66
0
1.66
0
1.16
1.16
1.16
1.16
0.91
0.91
0.91
0.91
0.91
0.91
0.91
0.91
0.41
0.41
0.41
F-CL
Bushing
Size
Bore Sizes
Min
Max
1.46
MPB
1.000 1.188
1.46
MPB
1.000 1.500
1.46
MPB
1.000 1.750
1.46
MPB
1.000 1.813
1.46
MPB
1.000 2.000
1.46
1610 0.500 1.688
1.46
MPB
1.000 2.125
1.46
1610 0.500 1.688
1.46
MPB
1.000 2.313
1.46
1610 0.500 1.688
1.46
MPB
1.000 2.438
1.46
2012 0.500 2.125
1.46
MPB
1.000 2.563
1.46
2012 0.500 2.125
1.46
MPB
1.000 2.750
1.46
2012 0.500 2.125
1.46
MPB
1.000 2.750
1.46
2517 0.500 2.688
1.46
2517 0.500 2.688
1.46
2517 0.500 2.688
1.46
2517 0.500 2.688
1.46
3020 0.875 3.250
1.46
3020 0.875 3.250
1.46
3020 0.875 3.250
1.46
3020 0.875 3.250
1.46
3020 0.875 3.250
1.46
3020 0.875 3.250
1.46
3020 0.875 3.250
1.46
3020 0.875 3.250
1.46
3525 1.188 3.938
1.46
3525 1.188 3.938
1.46
3525 1.188 3.938
Approx.
Wt. (lb)
Approx.
WR2
2.4
0.011
3.4
0.019
4.5
0.032
5.2
0.042
6.1
0.055
2.6
0.038
6.9
0.070
2.8
0.045
8.0
0.092
3.1
0.056
9.1
0.115
3.3
0.067
10.3
0.144
3.6
0.079
11.6
0.178
5.1
0.126
13.1
0.227
5.1
0.15
6.3
0.196
6.7
0.229
8.3
0.307
8.9
0.407
9.9
0.483
12.0
0.64
14.4
0.837
16.8
1.067
20.5
1.45
30.1
2.631
31.0
4.255
62.8 10.91
91.6 29.51
127.1 67.42
Matl.
Spec.
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
•
•
73
Stock 14mm Poly Chain® GT®2 Sprocket Specifications
Sprocket
Number
14MX-28S-20
14MX-29S-20
14MX-30S-20
14MX-31S-20
14MX-32S-20
14MX-33S-20
14MX-34S-20
14MX-35S-20
14MX-36S-20
14MX-37S-20
14MX-38S-20
14MX-39S-20
14MX-40S-20
14MX-43S-20
14MX-45S-20
14MX-48S-20
14MX-50S-20
14MX-53S-20
14MX-56S-20
14MX-60S-20
14MX-63S-20
14MX-67S-20
14MX-71S-20
14MX-75S-20
14MX-80S-20
14MX-90S-20
14MX-112S-20
14MX-140S-20
14MX-168S-20
14MX-180S-20
14MX-200S-20
14MX-224S-20
Diameters (in)
Number
of
Teeth
Pitch
28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
90
112
140
168
180
200
224
4.912
5.088
5.263
5.439
5.614
5.790
5.965
6.141
6.316
6.492
6.667
6.842
7.018
7.544
7.895
8.421
8.772
9.299
9.825
10.527
11.053
11.755
12.457
13.158
14.036
15.790
19.650
24.562
29.475
31.580
35.089
39.300
Dimensions (in)
O.D
Flange
Ref.
Design
Type
4.802
4.978
5.153
5.329
5.504
5.680
5.855
6.031
6.206
6.382
6.557
6.732
6.908
7.434
7.785
8.311
8.662
9.189
9.715
10.417
10.943
11.645
12.347
13.048
13.926
15.680
19.540
24.452
29.365
31.470
34.979
39.190
5.400
5.760
5.760
6.110
6.110
6.460
6.460
6.820
6.820
7.170
7.170
7.520
7.520
8.040
8.400
8.940
9.290
9.690
10.360
11.070
11.590
12.500
13.070
13.730
14.620
—
—
—
—
—
—
—
A1-F
A1-F
A1-F
A1-F
A1-F
A1-F
A1-F
A1-F
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
BF-1
CF-1
CF-1
CF-2
C-2
C-3
C-3
C-3
C-3
C-3
C-3
A
3.61
3.99
3.99
4.22
4.22
4.53
4.53
4.95
—
—
—
—
—
—
—
—
—
—
—
—
—
—
11.05
11.68
12.56
14.26
16.47
21.04
25.90
27.99
31.46
35.63
B
—
—
—
—
—
—
—
—
4.25
4.25
4.25
4.25
4.25
4.25
5.41
5.75
5.75
5.75
8.70
8.75
8.75
8.75
8.75
8.75
8.75
8.75
8.75
8.75
8.75
8.75
8.75
10.00
C
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
1.04
—
—
—
—
—
—
—
D
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.75
1.75
1.75
1.75
1.75
1.75
2.00
2.00
2.00
2.00
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
3.00
E
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
F
M
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
—
1.36
—
1.36
—
1.36
1.36
1.36
1.36
1.36
1.36
1.36
1.36
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.11
0.39
0.39
0.39
0.39
0.39
0.39
0.64
0.64
0.64
0.64
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.14
1.64
Number
of
Teeth
Pitch
14MX-28S-37-PB
14MX-28S-37
14MX-29S-37
14MX-30S-37
14MX-31S-37
14MX-32S-37
14MX-33S-37
14MX-34S-37
14MX-35S-37
14MX-36S-37
14MX-37S-37
14MX-38S-37
14MX-39S-37
14MX-40S-37
14MX-43S-37
14MX-45S-37
14MX-48S-37
14MX-50S-37
14MX-53S-37
14MX-56S-37
14MX-60S-37
14MX-63S-37
14MX-67S-37
14MX-71S-37
14MX-75S-37
14MX-80S-37
14MX-90S-37
14MX-112S-37
14MX-140S-37
14MX-168S-37
14MX-180S-37
14MX-200S-37
14MX-224S-37
28
28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
90
112
140
168
180
200
224
4.912
4.912
5.088
5.263
5.439
5.614
5.790
5.965
6.141
6.316
6.492
6.667
6.842
7.018
7.544
7.895
8.421
8.772
9.299
9.825
10.527
11.053
11.755
12.457
13.158
14.036
15.790
19.650
24.562
29.475
31.580
35.089
39.300
74
•
Bore Sizes
Min
Max
0.68
2012 0.500 2.125
0.68
2012 0.500 2.125
0.68
2012 0.500 2.125
0.68
2012 0.500 2.125
0.68
2012 0.500 2.125
0.68
2012 0.500 2.125
0.68
2012 0.500 2.125
0.68
2012 0.500 2.125
0.68
2517 0.500 2.688
0.68
2517 0.500 2.688
0.68
2517 0.500 2.688
0.68
2517 0.500 2.688
0.68
2517 0.500 2.688
0.68
2517 0.500 2.688
0.68
3020 0.875 3.250
0.68
3020 0.875 3.250
0.68
3020 0.875 3.250
0.68
3020 0.875 3.250
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
3525 1.188 3.938
0.68
4030 1.438 4.438
Approx.
Wt. (lb)
Approx.
WR2
Matl.
Spec.
3.9
4.3
4.8
5.3
5.8
6.3
6.8
7.3
8.4
9.3
9.9
10.7
11.4
14.0
15.0
18.2
20.8
24.1
30.2
36.9
42.3
50.3
40.6
42.3
48.0
53.8
70.1
94.8
120.8
134.6
158.1
201.1
0.105
G
0.122
G
0.143
G
0.165
G
0.191
G
0.217
G
0.248
G
0.279
G
0.346
G
0.398
G
0.443
G
0.502
0.554
0.770
0.948
1.277
1.561
1.992
2.834
3.888
4.837
6.428
4.832
5.260
6.573
9.215
21.11
48.06
91.40
118.6
176.5
271.7
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
Dimensions (in)
O.D
Flange
Ref.
Design
Type
4.802
4.802
4.978
5.153
5.329
5.504
5.680
5.855
6.031
6.206
6.382
6.557
6.732
6.908
7.434
7.785
8.311
8.662
9.189
9.715
10.417
10.943
11.645
12.347
13.048
13.926
15.680
19.540
24.452
29.365
31.470
34.979
39.190
5.400
5.400
5.760
5.760
6.110
6.110
6.460
6.460
6.820
6.820
7.170
7.170
7.520
7.520
8.040
8.400
8.940
9.290
9.690
10.360
11.070
11.590
12.500
13.070
13.730
14.620
—
—
—
—
—
—
—
6F-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
BF-1
BF-1
BF-1
BF-1
BF-1
CF-1
CF-2
C-2
C-3
C-3
C-3
C-3
C-3
C-3
A
—
3.61
3.99
3.99
4.22
4.22
4.53
4.53
4.95
4.95
5.27
5.27
5.54
5.54
6.16
6.42
6.96
7.44
7.84
—
—
—
—
—
11.68
12.56
14.26
16.39
20.84
25.51
27.59
31.07
35.24
B
3.97
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8.70
8.75
8.75
8.75
8.75
8.75
8.75
8.75
8.75
8.75
10.00
10.00
10.00
10.00
C
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
1.74
—
—
—
—
—
—
—
D
2.86
1.25
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
3.00
3.00
3.00
3.00
—
—
—
—
—
—
—
E
F
M
0.80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
2.06
0
0.81
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.44
0.44
0.44
0.44
0.44
0.44
0.44
0.44
0.44
0.44
0.94
0.94
0.94
0.94
NOTES:
Bushing
Size
Diameters (in)
Sprocket
Number
F-CL
minimum bore.
R
F-CL
Bushing
Size
Bore Sizes
Min
Max
1.03
MPB 1.000 2.938
1.03
2012 0.500 2.125
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
2517 0.500 2.688
1.03
3020 0.875 3.250
1.03
3020 0.875 3.250
1.03
3020 0.875 3.250
1.03
3020 0.875 3.250
1.03
3020 0.875 3.250
1.03
3020 0.875 3.250
1.03
3020 0.875 3.250
1.03
3020 0.875 3.250
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
3525 1.188 3.938
1.03
4030 1.438 4.438
1.03
4030 1.438 4.438
1.03
4030 1.438 4.438
1.03
4030 1.438 4.438
Approx.
Wt. (lb)
Approx.
WR2
Matl.
Spec.
11.7
5.2
5.1
5.8
6.4
7.2
7.8
8.7
9.3
10.2
10.8
10.3
11.3
12.3
15.6
18.0
21.5
24.1
28.3
33.0
40.6
46.7
55.6
61.2
46.9
52.5
61.5
89.1
125.5
175.1
191.4
224.9
267.7
0.228
0.145
G
0.16
G
0.192
G
0.223
G
0.262
G
0.299
G
0.346
G
0.388
G
0.444
0.496
0.687
0.757
0.862
1.148
1.394
1.802
2.102
2.694
3.247
4.499
5.631
7.476
8.443
6.468
7.891
11.78
30.71
72.00
139.8
176.8
261.6
397.9
D
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
•
•
Diameters (in)
Sprocket
Number
Number
of
Teeth
Pitch
14MX-28S-68-PB
14MX-29S-68
14MX-29S-68-PB
14MX-30S-68
14MX-30S-68-PB
14MX-31S-68
14MX-31S-68-PB
14MX-32S-68
14MX-32S-68-PB
14MX-33S-68
14MX-33S-68-PB
14MX-34S-68
14MX-34S-68-PB
14MX-35S-68
14MX-36S-68
14MX-37S-68
14MX-38S-68
14MX-39S-68
14MX-40S-68
14MX-43S-68
14MX-45S-68
14MX-48S-68
14MX-50S-68
14MX-53S-68
14MX-56S-68
14MX-60S-68
14MX-63S-68
14MX-67S-68
14MX-71S-68
14MX-75S-68
14MX-80S-68
14MX-90S-68
14MX-112S-68
14MX-140S-68
14MX-168S-68
14MX-180S-68
14MX-200S-68
14MX-224S-68
28
29
29
30
30
31
31
32
32
33
33
34
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
90
112
140
168
180
200
224
4.912
5.088
5.088
5.263
5.263
5.439
5.439
5.614
5.614
5.790
5.790
5.965
5.965
6.141
6.316
6.492
6.667
6.842
7.018
7.544
7.895
8.421
8.772
9.299
9.825
10.527
11.053
11.755
12.457
13.158
14.036
15.790
19.650
24.562
29.475
31.580
35.089
39.300
Dimensions (in)
O.D
Flange
Ref.
Design
Type
4.802
4.978
4.978
5.153
5.153
5.329
5.329
5.504
5.504
5.680
5.680
5.855
5.855
6.031
6.206
6.382
6.557
6.732
6.908
7.434
7.785
8.311
8.662
9.189
9.715
10.417
10.943
11.645
12.347
13.048
13.926
15.680
19.540
24.452
29.365
31.470
34.979
39.190
5.400
5.760
5.760
5.760
5.760
6.110
6.110
6.110
6.110
6.460
6.470
6.460
6.470
6.820
6.820
7.170
7.170
7.520
7.520
8.040
8.390
8.940
9.290
9.690
10.360
11.070
11.590
12.500
13.070
13.730
14.620
—
—
—
—
—
—
—
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
DF-1
DF-1
DF-1
DF-2
D-2
D-3
D-3
C-3
C-3
C-3
C-3
A
—
3.99
—
3.99
—
4.22
—
4.22
—
4.53
—
4.53
—
4.95
4.95
5.27
5.27
5.54
5.54
6.16
6.42
6.96
7.44
7.84
8.35
9.06
9.59
10.36
11.05
11.68
12.56
14.26
16.35
20.78
25.23
27.16
30.65
34.82
B
3.97
—
4.35
—
4.35
—
4.57
—
4.57
—
4.89
—
4.89
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8.75
8.75
8.75
8.75
10.00
10.00
10.00
10.50
10.50
10.50
11.00
C
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
3.01
D
4.13
1.75
4.13
1.75
4.13
1.75
4.13
1.75
4.13
1.75
4.33
1.75
4.33
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
2.50
3.00
3.00
3.00
3.50
3.50
3.50
4.00
E
F
M
0.80
—
0.80
—
0.80
—
0.80
—
0.80
—
1.00
—
1.00
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
3.33
0
1.58
0
1.58
0
1.58
0
1.58
0
1.58
0
1.58
0
1.33
1.33
1.33
1.33
1.33
1.33
1.33
1.33
0.83
0.83
0.83
0.83
0.83
0.83
0.83
0.83
0.83
0.83
0.33
0.33
0.33
0.17
0.17
0.17
0.67
NOTES:
•
minimum bore.
R
F-CL
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
1.67
Bushing
Size
MPB
2517
MPB
2517
MPB
2517
MPB
2517
MPB
2517
MPB
2517
MPB
3020
3020
3020
3020
3020
3020
3020
3020
3525
3525
3525
3525
3525
3525
3525
3525
3525
3525
4030
4030
4030
4535
4535
4535
5040
Bore Sizes
Min
Max
1.000
0.500
1.000
0.500
1.000
0.500
1.000
0.500
1.000
0.500
1.000
0.500
1.000
0.875
0.875
0.875
0.875
0.875
0.875
0.875
0.875
1.188
1.188
1.188
1.188
1.188
1.188
1.188
1.188
1.188
1.188
1.438
1.438
1.438
1.938
1.938
1.938
2.438
2.938
2.688
3.188
2.688
3.188
2.688
3.438
2.688
3.438
2.688
3.500
2.688
3.500
3.250
3.250
3.250
3.250
3.250
3.250
3.250
3.250
3.938
3.938
3.938
3.938
3.938
3.938
3.938
3.938
3.938
3.938
4.438
4.438
4.438
4.938
4.938
4.938
5.000
Approx.
Wt. (lb)
Approx.
WR2
17.4
0.348
7.0
0.23
G
19.1
0.412
8.2
0.281
G
20.3
0.466
8.8
0.32
G
21.9
0.537
10.0
0.383
23.2
0.603
10.5
0.422
25.9
0.714
11.8
0.498
27.3
0.794
10.3
0.498
11.7
0.589
12.3
0.646
13.8
0.754
14.6
0.831
16.2
0.957
18.4
1.22
21.9
1.571
25.7
2.123
28.5
2.506
33.7
3.26
39.0
4.119
46.4
5.489
52.3
6.713
56.4
7.452
64.1
9.377
56.9
8.993
62.1
10.39
86.2
17.66
135.1
49.62
189.0 115.1
259.5 228.9
288.6 295.5
331.9 422.1
404.3 644.5
Matl.
Spec.
D
D
D
D
G
D
G
D
G
D
D
D
G
G
G
G
G
G
D
D
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
•
•
75
Diameters (in)
Sprocket
Number
Number
of
Teeth
Pitch
14MX-28S-90-PB
14MX-29S-90-PB
14MX-30S-90-PB
14MX-31S-90-PB
14MX-32S-90-PB
14MX-33S-90-PB
14MX-34S-90-PB
14MX-35S-90
14MX-35S-90-PB
14MX-36S-90
14MX-36S-90-PB
14MX-37S-90
14MX-37S-90-PB
14MX-38S-90
14MX-38S-90-PB
14MX-39S-90
14MX-39S-90-PB
14MX-40S-90
14MX-40S-90-PB
14MX-43S-90
14MX-45S-90
14MX-48S-90
14MX-50S-90
14MX-53S-90
14MX-56S-90
14MX-60S-90
14MX-63S-90
14MX-67S-90
14MX-71S-90
14MX-75S-90
14MX-80S-90
14MX-90S-90
14MX-112S-90
14MX-140S-90
14MX-168S-90
14MX-180S-90
14MX-200S-90
14MX-224S-90
28
29
30
31
32
33
34
35
35
36
36
37
37
38
38
39
39
40
40
43
45
48
50
53
56
60
63
67
71
75
80
90
112
140
168
180
200
224
4.912
5.088
5.263
5.439
5.614
5.790
5.965
6.141
6.141
6.316
6.316
6.492
6.492
6.667
6.667
6.842
6.842
7.018
7.018
7.544
7.895
8.421
8.772
9.299
9.825
10.527
11.053
11.755
12.457
13.158
14.036
15.790
19.650
24.562
29.475
31.580
35.089
39.300
Dimensions (in)
O.D
Flange
Ref.
Design
Type
4.802
4.978
5.153
5.329
5.504
5.680
5.855
6.031
6.031
6.206
6.206
6.382
6.382
6.557
6.557
6.732
6.732
6.908
6.908
7.434
7.785
8.311
8.662
9.189
9.715
10.417
10.943
11.645
12.347
13.048
13.926
15.680
19.540
24.452
29.365
31.470
34.979
39.190
5.400
5.760
5.760
6.110
6.110
6.470
6.470
6.820
6.820
6.820
6.820
7.170
7.170
7.170
7.170
7.520
7.500
7.520
7.520
8.040
8.390
8.940
9.290
9.690
10.360
11.070
11.590
12.500
13.070
13.730
14.620
—
—
—
—
—
—
—
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
6F-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
DF-1
D-2
D-2
D-3
C-3
C-3
C-3
C-3
A
—
—
—
—
—
—
—
4.95
—
4.95
—
5.27
—
5.27
—
5.54
—
5.54
—
6.16
6.42
6.96
7.44
7.83
8.35
9.06
9.59
9.88
10.67
11.63
12.56
14.26
16.35
20.74
25.11
27.06
30.29
34.46
B
C
3.97
4.35
4.35
4.57
4.57
4.89
4.89
—
5.30
—
5.30
—
5.63
—
5.63
—
5.89
—
5.89
—
—
—
—
—
—
—
—
—
—
—
10.00
10.00
10.50
11.00
15.50
15.50
15.50
15.50
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
3.88
—
—
—
—
—
—
—
D
5.14
5.00
5.00
5.00
5.00
5.20
5.20
2.00
5.20
2.00
5.20
2.00
5.20
2.00
5.20
2.00
5.20
2.00
5.20
2.50
2.50
2.50
2.50
2.50
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.00
3.50
4.00
5.00
5.00
5.00
5.00
—
—
—
—
—
—
—
E
F
M
0.94
0.80
0.80
0.80
0.80
1.00
1.00
—
1.00
—
1.00
—
1.00
—
1.00
—
1.00
—
1.00
—
—
—
—
—
—
—
—
—
—
—
—
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
0
0
0
0
0
0
0
2.20
0
2.20
0
2.20
0
2.20
0
2.20
0
2.20
0
1.70
1.70
1.70
1.70
1.70
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
0.70
0.20
0.80
0.80
0.80
0.80
NOTES:
76
•
minimum bore.
R
F-CL
Bushing
Size
Bore Sizes
Min
Max
2.10
MPB 1.500 2.938
2.10
MPB 1.500 3.188
2.10
MPB 1.500 3.188
2.10
MPB 1.500 3.438
2.10
MPB 1.500 3.438
2.10
MPB 1.500 3.500
2.10
MPB 1.500 3.500
2.10
3020 0.875 3.250
2.10
MPB 1.500 3.813
2.10
3020 0.875 3.250
2.10
MPB 1.500 3.813
2.10
3020 0.875 3.250
2.10
MPB 1.500 4.125
2.10
3020 0.875 3.250
2.10
MPB 1.500 4.125
2.10
3020 0.875 3.250
2.10
MPB 1.500 4.375
2.10
3020 0.875 3.250
2.10
MPB 1.500 4.375
2.10
3525 1.188 3.938
2.10
3525 1.188 3.938
2.10
3525 1.188 3.938
2.10
3525 1.188 3.938
2.10
3525 1.188 3.938
2.10
4030 1.438 4.438
2.10
4030 1.438 4.438
2.10
4030 1.438 4.438
2.10
4030 1.438 4.438
2.10
4030 1.438 4.438
2.10
4030 1.438 4.438
2.10
4030 1.438 4.438
2.10
4030 1.438 4.438
2.10
4535 1.938 4.938
2.10
5040 2.438 5.000
2.10
6050 4.438 6.000
2.10
6050 4.438 6.000
2.10
6050 4.438 6.000
2.10
6050 4.438 6.000
Approx.
Wt. (lb)
Approx.
WR2
Matl.
Spec.
20.4
22.0
23.6
25.5
27.1
30.2
31.9
12.1
34.6
13.9
36.4
14.2
39.0
16.1
41.0
16.8
43.6
18.8
45.6
20.9
24.3
28.9
31.5
37.4
43.2
52.2
59.3
71.3
81.6
95.9
94.1
94.5
173.7
245.3
395.1
429.4
493.0
562.6
0.432
0.503
0.571
0.658
0.741
0.871
0.971
0.602
1.120
0.717
1.240
0.773
1.408
0.909
1.549
0.992
1.737
1.152
1.903
1.51
1.878
2.477
2.877
3.753
4.893
6.574
8.076
10.79
13.58
16.50
17.78
20.17
64.28
149.3
321.7
405.5
586.1
849.9
D
D
D
D
D
D
D
D
D
D
D
G
D
G
D
G
D
G
D
D
D
D
D
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
•
•
Diameters (in)
Sprocket
Number
Number
of
Teeth
Pitch
O.D
Flange
Ref.
14MX-28S-125-PB
14MX-29S-125-PB
14MX-30S-125-PB
14MX-31S-125-PB
14MX-32S-125-PB
14MX-33S-125-PB
14MX-34S-125-PB
14MX-35S-125-PB
14MX-36S-125-PB
14MX-37S-125-PB
14MX-38S-125-PB
14MX-39S-125-PB
14MX-40S-125-PB
14MX-43S-125-PB
14MX-45S-125-PB
14MX-48S-125-PB
14MX-50S-125
14MX-53S-125
14MX-56S-125
14MX-60S-125
14MX-63S-125
14MX-67S-125
14MX-71S-125
14MX-75S-125
14MX-80S-125
14MX-90S-125
14MX-112S-125
14MX-140S-125
14MX-168S-125
14MX-180S-125
14MX-200S-125
14MX-224S-125
28
29
30
31
32
33
34
35
36
37
38
39
40
43
45
48
50
53
56
60
63
67
71
75
80
90
112
140
168
180
200
224
4.912
5.088
5.263
5.439
5.614
5.790
5.965
6.141
6.316
6.492
6.667
6.842
7.018
7.544
7.895
8.421
8.772
9.299
9.825
10.527
11.053
11.755
12.457
13.158
14.036
15.790
19.650
24.562
29.475
31.580
35.089
39.300
4.802
4.978
5.153
5.329
5.504
5.680
5.855
6.031
6.206
6.382
6.557
6.732
6.908
7.434
7.785
8.311
8.662
9.189
9.715
10.417
10.943
11.645
12.347
13.048
13.926
15.680
19.540
24.452
29.365
31.470
34.979
39.190
5.400
5.760
5.760
6.110
6.110
6.470
6.470
6.820
6.820
7.170
7.170
7.520
7.520
8.040
8.400
8.940
9.290
9.690
10.360
11.070
11.590
12.500
13.070
13.730
14.620
—
—
—
—
—
—
—
Dimensions (in)
Design
Type
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
6F-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
AF-1
D-1
A-1
D-3
C-3
C-3
C-3
C-3
A
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
7.44
7.83
8.35
9.06
9.59
9.88
10.67
11.63
12.59
14.26
16.35
20.74
25.11
27.06
30.29
34.21
B
C
3.97
4.35
4.35
4.57
4.57
4.89
4.89
5.30
5.30
5.63
5.63
5.89
5.89
6.51
6.76
7.29
—
—
—
—
—
—
—
—
—
11.00
—
15.50
17.00
17.00
17.00
17.00
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
5.29
—
—
—
—
—
—
—
D
E
•
minimum bore.
R
M
F-CL
Bushing
Size
Bore Sizes
Min
Max
6.50
0.89
5.61
0
2.81
MPB 1.500 2.938
6.50
0.89
5.61
0
2.81
MPB 1.500 3.188
6.50
0.89
5.61
0
2.81
MPB 1.500 3.188
6.50
0.89
5.61
0
2.81
MPB 1.500 3.438
6.50
0.89
5.61
0
2.81
MPB 1.500 3.438
6.69
1.08
5.61
0
2.81
MPB 1.500 3.500
6.69
1.08
5.61
0
2.81
MPB 1.500 3.500
6.69
1.08
5.61
0
2.81
MPB 1.500 3.813
6.69
1.08
5.61
0
2.81
MPB 1.500 3.813
6.69
1.08
5.61
0
2.81
MPB 1.500 4.125
6.69
1.08
5.61
0
2.81
MPB 1.500 4.125
6.69
1.08
5.61
0
2.81
MPB 1.500 4.375
6.69
1.08
5.61
0
2.81
MPB 1.500 4.375
6.81
1.20
5.61
0
2.81
MPB 1.500 4.813
6.81
1.20
5.61
0
2.81
MPB 1.500 5.000
6.81
1.20
5.61
0
2.81
MPB 1.500 5.625
3.50
—
5.61
2.11
2.81
4535 1.938 4.938
3.50
—
5.61
2.11
2.81
4535 1.938 4.938
3.50
—
5.61
2.11
2.81
4535 1.938 4.938
3.50
—
5.61
2.11
2.81
4535 1.938 4.938
3.50
—
5.61
2.11
2.81
4535 1.938 4.938
3.50
—
5.61
2.11
2.81
4535 1.938 4.938
4.00
—
5.61
1.61
2.81
5040 2.438 5.000
4.00
—
5.61
1.61
2.81
5040 2.438 5.000
4.00
—
5.61
1.61
2.81
5040 2.438 5.000
4.00
—
5.61
1.61
2.81
5040 2.438 5.000
5.00
—
5.61
0.61
2.81
6050 4.438 6.000
5.00
—
5.61
0.61
2.81
6050 4.438 6.000
6.00
—
5.61
0.39
2.81
7060 4.938 7.000
6.00
—
5.61
0.39
2.81
7060 4.938 7.000
6.00
—
5.61
0.39
2.81
7060 4.938 7.000
6.00
—
5.61
0.39
2.81
7060 4.938 7.000
NOTES:
F
Approx.
Wt. (lb)
Approx.
WR2
24.8
0.562
27.2
0.661
29.2
0.752
31.6
0.865
33.8
0.976
37.3
1.138
39.6
1.272
42.9
1.461
45.3
1.621
48.5
1.835
51.1
2.024
54.3
2.267
57.0
2.488
68.2
3.413
75.0
4.092
86.3
5.340
38.0
3.54
46.0
4.705
53.6
5.983
64.3
8.015
72.8
9.827
88.2
13.3
103.0
17.41
117.0
21.43
136.0
27.78
135.0
32.49
317.0 127.5
373.0 225.4
524.0 419.5
567.0 525.2
648.0 753.8
753.0 1122.
Matl.
Spec.
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
G
G
G
G
G
G
G
G
G
G
G
G
G
•
•
77
Sprocket Specifications
Sprocket Tolerance Specifications
Poly Chain® GT®2 sprockets are made to close tolerances. Modifications such as reboring may result in unsatisfactory drive performance. Strict adherence to the standard tolerances (as shown in table below) is highly recommended.
Sprocket Outside Diameter and Pitch
Pitch To Pitch Tolerance (in)
Outside
Diameter
Tolerance (in)
Outside Diameter
Range (in)
Over 2.000 to and
including 4.000
Over 4.000 to and
including 7.000
Over 7.000 to and
including 12.000
Over 12.000 to and
including 20.000
Adjacent
Grooves
Accumulative Over
90 Degrees
± 0.001
± 0.0045
± 0.001
± 0.005
± 0.001
± 0.006
± 0.001
± 0.0065
± 0.001
± 0.0075
+ 0.004
– 0.000
+ 0.005
– 0.000
+ 0.006
– 0.000
+ 0.007
– 0.000
+ 0.008
– 0.000
Over 20.000
hk
wk
Sprocket Runout
Radial Runout*
Total Eccentricity
Total Indicator Reading
Outside Diameter
(in)
(mm)
Over 2 to 4
Over 4 to 8
Over 8
(in)
50
100
100
200
(mm)
0.003
0.08
0.004
0.10
.0005 per inch
.013 per mm O.D.
O.D. over 8″
over 200mm
(may not exceed face diameter tolerance)
200
* Total Indicator Reading
Axial Runout*
For outside diameters 1.0 inches and under. . 0.001 inches
For each additional inch of outside diameter up through
10.0 inches, add . . . . . . . . . . . . . . . . 0.001 inches
For each additional inch of outside diameter
over 10.0 inches, add . . . . . . . . . . . . . 0.0005 inches
* Total Indicator Reading
Sprocket and Bushing Keyseat
Width wk†
(in)
Shaft Diameter
(in)
Up through
Over
7
Over
9
Over
7
16
(0.44)
16
(0.44) to and incl.
16
7
8
3
16
(0.56)
(0.56) to and incl.
7
8
(0.88)
(0.88) to and incl. 1
1
4
(1.25)
9
Over 1 14 (1.25) to and incl. 13 8 (1.38)
Over 1
5
32
(0.0938)
3
1
(0.125)
1
16
(0.1875)
3
1
(0.250)
1
Over 2 14 (2.25) to and incl. 23 4 (2.75)
5
Over 2
(0.094)
8
(0.125)
32
(0.156)
8
(0.375)
2
(0.500)
16
(0.188)
1
4
8
(0.625)
(0.250)
16
(0.312)
3
4
(0.750)
8
(0.375)
5
(3.25)
3
Over 3 14 (3.25) to and incl. 33 4 (3.75)
7
8
(0.875)
16
(0.438)
Over 33 4 (3.75) to and incl. 4 12 (4.50)
1
(1.000)
1
2
(0.500)
1
(1.250)
5
8
(0.625)
Over 4
†
3
1
4
2
4
32
1
3
1
1
4
2
(5.50)
1
4
7
Stock Sprockets are statically balanced per MPTA (Mechanical
Power Transmission Association) Standard Practice for Pulley
Balancing SPB-86 using the weight based on the following two criteria:
1. Balance limit (ounces) = Sprocket Weight (lb) x 0.016; or
2. 0.176 ounce (5 grams), whichever is greater.
Caution: Stock sprockets should not be used on drives where rim
surface speeds exceed 6,500 fpm. Sprocket construction and materials will determine the dynamic balancing requirements of the
sprocket(s) where rim surface speeds exceed 6,500 fpm.
Sprocket Tooth Profile and Surface Quality
The Poly Chain GT2 sprocket tooth profile was designed and developed exclusively by The Gates Rubber Company to operate
with the Gates Poly Chain GT2 Belt. See Engineering Section II-3,
Tooth Profile, on page 104 for a complete discussion of the performance characteristics of this new tooth profile. The tooth surface
should be free of any surface defects and should be 80 micro-inches finish or better.
(0.047)
(0.062)
16
(1.75)
8
4
64
16
5
Over 13 4 (1.75) to and incl. 2 14 (2.25)
3
8
(0.3125)
3
3
3
Depth, hk (in)
+ 0.015
0.000
Balancing
Sprocket Blanks
Sprocket blanks can be grooved by Gates for specially designed,
made-to-order sprockets. If those sprockets are supplied in blank
form, Gates can perform the “grooving” operation. The blank diameter must be 0.050″ larger than the finished sprocket O.D. Contact your local Gates Representative for additional details.
Tolerance on width, Wk
For width up through 1/2 (0.500) . . . . . . . . . + 0.002, 0.000 inches
For width over 1/2 (0.500) up through 1 (1.000) . . + 0.003, 0.000 inches
For width over 1 (1.000). . . . . . . . . . . . . . + 0.004, 0.000 inches
78
R
Poly Chain GT 2 Bored-To-Size Sprocket Bore Range Listing
®
®
8mm Pitch Sprockets
14mm Pitch Sprockets
Sprocket
Size
Minimum
Bore
(in)
Full Keyway
Bore Range
(in)
Shallow Keyway
Bore Range
(in)
Sprocket
Size
Minimum
Bore
(in)
Full Keyway
Bore Range
(in)
Shallow Keyway
Bore Range
(in)
8MX-22S-12
0.500
0.500 - 1.063
1.125 - 1.188
14MX-28S-37
1.000
1.000 - 2.500
2.563 - 2.938
8MX-22S-21
0.500
0.500 - 1.063
1.125 - 1.188
14MX-28S-68
1.000
1.000 - 2.500
2.563 - 2.938
8MX-22S-36
0.500
0.500 - 1.063
1.125 - 1.188
14MX-28S-90
1.500
1.500 - 2.500
2.563 - 2.938
8MX-25S-12
0.500
0.500 - 1.313
1.375 - 1.500
14MX-28S-125
1.500
1.500 - 2.500
2.563 - 2.938
8MX-25S-21
0.500
0.500 - 1.313
1.375 - 1.500
14MX-29S-68
1.000
1.000 - 2.750
2.813 - 3.188
8MX-25S-36
0.500
0.500 - 1.313
1.375 - 1.500
14MX-29S-90
1.500
1.500 - 2.750
2.813 - 3.188
8MX-25S-62
1.000
1.000 - 1.313
1.375 - 1.500
14MX-29S-125
1.500
1.500 - 2.750
2.813 - 3.188
8MX-28S-12
0.500
0.500 - 1.500
1.563 - 1.750
14MX-30S-68
1.000
1.000 - 2.750
2.813 - 3.188
8MX-28S-21
0.500
0.500 - 1.500
1.563 - 1.750
14MX-30S-90
1.500
1.500 - 2.750
2.813 - 3.188
8MX-28S-36
0.500
0.500 - 1.500
1.563 - 1.750
14MX-30S-125
1.500
1.500 - 2.750
2.813 - 3.188
8MX-28S-62
1.000
1.000 - 1.500
1.563 - 1.750
14MX-31S-68
1.000
1.000 - 2.875
2.938 - 3.438
8MX-30S-12
0.500
0.500 - 1.563
1.625 - 1.813
14MX-31S-90
1.500
1.500 - 2.875
2.938 - 3.438
8MX-30S-21
0.500
0.500 - 1.563
1.625 - 1.813
14MX-31S-125
1.500
1.500 - 2.875
2.938 - 3.438
8MX-30S-36
0.500
0.500 - 1.563
1.625 - 1.813
14MX-32S-68
1.000
1.000 - 2.875
2.938 - 3.438
8MX-30S-62
1.000
1.000 - 1.563
1.625 - 1.813
14MX-32S-90
1.500
1.500 - 2.875
2.938 - 3.438
8MX-32S-12
0.500
0.500 - 1.750
1.813 - 2.000
14MX-32S-125
1.500
1.500 - 2.875
2.938 - 3.438
8MX-32S-21
0.500
0.500 - 1.750
1.813 - 2.000
14MX-33S-68
1.000
1.000 - 2.938
3.000 - 3.500
8MX-32S-36
0.500
0.500 - 1.750
1.813 - 2.000
14MX-33S-90
1.500
1.500 - 2.938
3.000 - 3.500
8MX-32S-62
1.000
1.000 - 1.750
1.813 - 2.000
14MX-33S-125
1.500
1.500 - 2.938
3.000 - 3.500
8MX-34S-36
0.500
0.500 - 1.750
1.813 - 2.125
14MX-34S-37
1.000
1.000 - 2.938
3.000 - 3.500
8MX-34S-62
1.000
1.000 - 1.750
1.813 - 2.125
14MX-34S-68
1.000
1.000 - 2.938
3.000 - 3.500
8MX-36S-36
0.500
0.500 - 1.938
2.000 - 2.313
14MX-34S-90
1.500
1.500 - 2.938
3.000 - 3.500
8MX-36S-62
1.000
1.000 - 1.938
2.000 - 2.313
14MX-34S-125
1.500
1.500 - 2.938
3.000 - 3.500
8MX-38S-36
0.500
0.500 - 2.125
2.188 - 2.438
14MX-35S-90
1.500
1.500 - 3.250
3.313 - 3.813
8MX-38S-62
1.000
1.000 - 2.125
2.188 - 2.438
14MX-35S-125
1.500
1.500 - 3.250
3.313 - 3.813
8MX-40S-62
1.000
1.000 - 2.188
2.250 - 2.563
14MX-36S-90
1.500
1.500 - 3.250
3.313 - 3.813
8MX-42S-62
1.000
1.000 - 2.375
2.438 - 2.750
14MX-36S-125
1.500
1.500 - 3.250
3.313 - 3.813
8MX-45S-62
1.000
1.000 - 2.375
2.438 - 2.750
14MX-37S-90
1.500
1.500 - 3.563
3.625 - 4.125
14MX-37S-125
1.500
1.500 - 3.563
3.625 - 4.125
14MX-38S-90
1.500
1.500 - 3.563
3.625 - 4.125
14MX-38S-125
1.500
1.500 - 3.563
3.625 - 4.125
14MX-39S-90
1.500
1.500 - 3.750
3.182 - 4.375
14MX-39S-125
1.500
1.500 - 3.750
3.182 - 4.375
14MX-40S-90
1.500
1.500 - 3.750
3.182 - 4.375
14MX-40S-125
1.500
1.500 - 3.750
3.182 - 4.375
14MX-43S-125
1.500
1.500 - 4.125
4.188 - 4.813
14MX-45S-125
1.500
1.500 - 4.375
4.438 - 5.000
14MX-48S-125
1.500
1.500 - 4.688
4.750 - 5.625
All Bored-To-Size Sprockets are made-to-order. Check with you local Gates representative or Customer Service for a quote and delivery.
All Bored-To-Size Sprockets are made-to-order. Check with you local Gates representative or Customer Service for a quote and delivery.
R
79
Recommended Re-bore Specifications and Instructions
For Minimum Plain Bore (MPB) Sprockets
When using MPB Poly Chain® GT®2 sprockets in power transmission systems, important guidelines should be followed for proper
product finishing and application. Due to the high load carrying capacity and high operating tensions often found in Poly Chain GT2
belt drive systems, it is imperative to use and adhere to industry
standard practices.
When finishing MPB sprockets for high performance belt drive
systems, care should be taken to ensure proper functionality and
performance. General re-bore instructions and specifications are
as follows:
1. Materials used in Poly Chain GT2 sprockets are steel, gray
iron, and ductile iron. The materials used may vary with the
size of the sprocket. See the Sprocket Specification Tables,
pages 72 thru 77 for specific materials.
2. The maximum bore diameter specified by the manufacturer
for each sprocket size should NOT be exceeded, or a keyway
used which reduces the hub thickness to less than its minimum allowable value. See the Sprocket Specification Tables
for a listing of recommended bore ranges by sprocket size.
Bores exceeding the maximum recommended value for a
particular sprocket size can adversely affect the structural integrity, thereby reducing their load-carrying capability.
The minimum metal thickness between the keyway and hub
O.D. should be no less than the set screw diameter specified
for the corresponding sprocket size. See Figure 1. A listing of
minimum set screw diameters is included below.
8M-22S thru 28S – 1/4″
8M-30S thru 34S – 5/16″
8M-36S thru 38S – 3/8″
8M-40S thru 45S – 7/16″
14M-28S – 7/16″
14M-29S thru 32S – 1/2″
14M-33S thru 40S – 5/8″
14M-43S thru 48S – 3/4″
Class 1 Clearance Fits should be used when the transmitted
load is smooth in nature.
Interference Fits should be used for Poly Chain GT2
curvilinear drives transmitting cyclical, pulsating, or reversing
loads.
Table 7 - Recommended Shaft / Bore Fits (Inches)
Clearance Fits
Interference Fits
Class 1- Smooth
Load
Cyclical, Pulsating,
Reversing Load
Nominal Bore Shaft
Bore
Bore Tolerance
Range
Tol.
Tol. Fit Tol.
Range
Over - To (Incl.) (minus) (Plus) (Plus)
(Minus)
0.4375 - 0.5626
0.5625 - 0.8750
0.8750 - 1.2500
1.2500 - 1.3750
1.3750 - 1.500
1.5000 - 1.7500
1.7500 - 2.0000
2.0000 - 2.2500
2.2500 - 2.7500
2.7500 - 3.0000
3.0000 - 3.2500
3.2500 - 3.7500
3.7500 - 4.0000
4.0000 - 4.5000
4.5000 - 5.0000
5.0000 - 5.5000
5.5000 - 6.5000
0.0005
0.0005
0.0005
0.0005
0.0005
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0010
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0015
0.0020
0.0020
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0025
0.0005
0.0005
0.0005
0.0005
0.0005
0.0010
0.0010
0.0010
0.0010
0.0010
0.0015
0.0015
0.0015
0.0020
0.0020
0.0025
0.0025
0.0010
0.0010
0.0010
0.0010
0.0010
0.0020
0.0020
0.0020
0.0020
0.0020
0.0030
0.0030
0.0030
0.0035
0.0035
0.0040
0.0040
Fit Tolerance
Range
(Minus)
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0005
0.0005
0.0005
0.0010
0.0010
0.0015
0.0015
0.0010
0.0010
0.0010
0.0010
0.0010
0.0020
0.0020
0.0020
0.0020
0.0020
0.0030
0.0030
0.0030
0.0035
0.0035
0.0040
0.0040
Table 7 was extracted in part from AGMA Standard for Bores and Keyways for
Flexible Couplings (Inch Series) AGMA 9002-A86 Table.
Figure 1 — Minimum Hub Thickness and Set Screw Placement Guidelines
3. The fit between a finished sprocket bore and its mating shaft
in a power transmission system must not allow relative movement between the bore and the shaft when the drive is subjected to belt tension and torque loads. This is accomplished,
in the case of plain bore sprockets, with the use of set screws
and keys and by controlling the fit or clearance between the
sprocket bore and its mating shaft. Cyclical, pulsating, or reversing loads may wear the sprocket bore and/or keyway due
to the relative movement between the contacting surfaces of
the shaft and the bore. The resulting wear may increase the
clearance further, if an interference fit is not used.
In order to maximize the performance of high capacity belt
drives using plain bore style sprockets, the following for recommendations presented in Table 7 should be followed:
80
R
4. DO NOT chuck or center the sprocket on guide flanges. Soft
jaws should be used when chucking on the sprocket teeth.
Center (indicate) the sprocket using the sprocket tooth O.D.
If chucked on the Rim I.D. or Hub O.D., the sprocket should
be centered with respect to the sprocket tooth O.D. Guide
flanges are permanently mounted and should not be removed. If original flanges must be removed, they should be
replaced with NEW flanges. New guide flanges should be attached securely with care using mechanical fasteners such
as screws. Note: Improper guide flange reassembly may
cause serious personal injury and/or mechanical damage.
5. Set screw holes in the sprocket hub must be placed properly
for maximum holding strength. For both standard and shallow
keyseats, two (2) set screws should be used as illustrated in
Figure 2. The total holding strength of the set screws is dependent upon their placement and design. Generally, one
screw should be placed directly over the keyway, and the
other screw at ninety degrees (90) from the keyway, or at
sixty-five degrees (65°) from the keyway—a more recent
practice that improves holding power. Sometimes four set
screws (or two pair) are used for increased holding strength.
Recommended Re-bore Specifications and Instructions
For Minimum Plain Bore (MPB) Sprockets
Figure 2 — Set Screw Angles
Each set screw should be placed axially—a minimum of one set
screw diameter from the end of the sprocket hub extension. See
Figure 1. For recommended set screw tightening torque values
see Table 8 below.
Table 8 — Recommended Tightening
Torque Values For Set Screws
Set Screw Size
Hex Key Size
(in)
1
1
5
16
3
7
4
8
16
1
5
3
7
2
8
4
8
Approximate Installation
Torque Values (lb-in)
8
80
32
160
16
275
32
430
1
4
615
16
1315
5
3
7
5
3
1
8
2150
2
5130
6. After reboring, the sprocket may require rebalancing. Vibration, noise, reduced bearing life, and undue stresses on the
mechanical components in the system could result if improper rebalancing practices are used. See Sprocket Specifications, page 78, for recommended sprocket balancing
specifications.
7. Standard square or rectangular keys should be used. See
pages 83-84 for standard key dimensions.
Specifications and tolerances for sprocket eccentricity, parallelism, and balancing, etc. are all presented on Page 78.
R
81
Stock Bushings for Sprockets
B
For removing from Shaft:
Bushing Half of Hole Threaded
Hub Half of Hole NOT Threaded
Position of Screw
to Tighten Bushing
55o
Bolt
Circle
85o
A
85o
8o Taper
Included Angle
Section A-A
A
Screw for Tightening on Shaft:
Hub Half of Hole Threaded
Bushing Half of Hole NOT Threaded
A
1008 thru 3020
B
Position of Screw
to Tighten Bushing
A
Bolt
Circle
For removing from Shaft:
Bushing Half of Hole Threaded
Hub Half of Hole NOT Threaded
o
55
G
G
60o 52o
A
Socket Head
Cap Screws
Screw for Tightening on Shaft:
Hub Half of Hole Threaded
Bushing Half of Hole NOT Threaded
o
B
8 Taper
Included Angle
Section A-A
A
A
3525 thru 5040
For Bushing
Removal
o
80
A
Bolt
Circle
o
45
o
82
o
33
o
43
o
37
o
38
A
o
o
45 35
31
Hex Head Cap
A Screws for Bushing
Installation
o
Section A-A
o
o
60
8 Taper
Included Angle
A
6050
7060
TAPER-LOCK* BUSHINGS
Bore Range
(in)
Bushing
Size
Torque
Capacity
(lb-in)
1008
1108
1210
1610
1615
2012
2517
3020
3525
3535
4030
4040
4535
4545
5040
6050
7060
1,200
1,300
3,600
4,300
4,300
7,150
11,600
24,000
44,800
44,800
77,300
77,300
110,000
110,000
126,000
282,000
416,000
Dimensions (in)
Mounting Screws
A
B
Bolt Circle
(in)
Quantity
1.386
1.511
1.875
2.250
2.25
2.750
3.375
4.250
5.000
5.000
5.750
5.750
6.375
6.375
7.000
9.250
10.250
0.875
0.875
1.000
1.000
1.500
1.250
1.750
2.000
2.500
3.500
3.000
4.000
3.500
4.500
4.000
5.000
6.000
1.328
1.328
1.750
2.125
2.125
2.625
3.250
4.000
4.830
4.830
5.540
5.540
6.130
6.130
6.720
9.000
10.000
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
4
G
(deg)
Size
1
4
1
4
3
8
3
8
3
8
7
16
1
2
5
8
1
2
1
2
5
8
5
8
3
4
3
4
7
8
1
4
1
4
1
1
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Max Bore
1
1
5
5
5
7
2
2
8
8
8
8
1
1 14
1 12
1 12
13 4
13 4
2
2
2 14
3 12
3 12
—
—
—
—
—
—
—
—
39
39
40
40
40
40
37
—
—
Standard
Shallow
Min. Bore Keyseat*** Keyseat** Max. Bore Min. Bore
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.875
1.188
1.188
1.438
1.438
1.938
1.938
2.438
4.438
4.938
* Registered trademark of Reliance Electric. ** Key is furnished with each bushing having a shallow keyseat.
*** Keys are not furnished with bushings having standard keyseats.
82
R
Weight Range
(lb)
0.875
1.000
1.250
1.500
1.500
1.875
2.250
2.750
3.250
3.250
3.625
3.625
4.250
4.250
4.500
6.000
7.000
1.000
1.125
—
1.688
1.688
2.125
2.688
3.250
3.938
3.938
4.438
4.438
4.938
4.938
5.000
—
—
0.2
0.1
0.4
0.5
0.6
0.9
1.8
3.3
4.2
5.0
6.7
8.2
9.3
11.2
16.4
45.0
66.0
0.3
0.3
0.6
0.9
1.3
1.7
3.7
6.5
11.1
14.8
17.5
22.1
24.1
30.3
31.9
57.0
87.0
Taper-Lock Bushing Bore and Keyseat Information
Taper Lock Bushings are available from stock with all popular bores within the bore range of each size bushing.
The Taper Lock Bushing Keyseat Dimension charts below list the bore range for each bushing and the appropriate keyseat dimensions.
Where standard keyseats are indicated, refer to the Standard Keyseat Dimensions chart. Where bores do not permit standard depth
keyseats, a flat key of the proper dimensions is furnished with the bushing.
Taper-Lock Bushing Keyseat Dimensions
Bushing
1008
1108
1210
1610
1615
2012
2517
3020
3525
3535
4030
4040
4535
4545
5040
6050
7060
Bores (in)
Keyseat
0.500 - 0.875
0.938 - 1.000
0.500 - 1.000
1.062 - 1.125
0.500 - 1.250
0.500 - 1.500
1.563 - 1.688
0.500 - 1.500
1.563 - 1.688
0.500 - 1.875
1.938 - 2.125
0.500 - 2.250
2.313 - 2.688
0.875 - 2.750
2.813 - 3.250
1.188 - 3.250
3.313 - 3.750
3.875 - 3.938
1.188 - 3.250
3.313 - 3.750
3.875 - 3.938
1.438 - 3.625
3.688 - 3.750
3.875 - 4.438
1.438 - 3.625
3.688 - 3.750
3.875 - 4.438
1.938 - 4.250
4.375 - 4.500
4.750 - 4.938
1.938 - 4.250
4.375 - 4.500
4.750 - 4.938
2.438 - 4.500
4.875 - 5.000
4.438 - 6.000
4.938 - 7.000
Standard
1 x 1
4
16
Standard
1 x 1
4
16
Standard
Standard
3 x 1
8
8
Standard
3 x 1
8
8
Standard
1 x 3
2
16
Standard
5 x 3
8
16
Standard
3 x 1
4
4
Standard
7 x 1
8
4
1 x 14
Standard
7 x 1
8
4
1 x 14
Standard
7 x 1
8
4
1 x 14
Standard
7 x 1
8
4
1 x 14
Standard
1 x 14
1 14 x 14
Standard
1 x 14
1 18 x 14
Standard
1 14 x 716
Standard
Standard
R
Standard Keyseat Dimensions
Keyseat (in)
Shaft Diameter (in)
0.313 - 0.438
0.500 - 0.563
0.625 - 0.875
0.938 - 1.250
1.313 - 1.375
1.438 - 1.750
1.813 - 2.250
2.313 - 2.750
2.813 - 3.250
3.313 - 3.750
3.813 - 4.500
4.563 - 5.500
5.563 - 6.500
6.563 - 7.500
7.563 - 9.000
Width
3
32
1
8
3
16
1
4
5
16
3
8
1
2
5
8
3
4
7
8
1
1 14
1 12
13 4
2
Key (in)
Depth
3
1
3
64
16
32
1
8
5
32
3
16
1
4
5
16
3
8
7
16
1
2
5
8
3
4
3
4
3
4
Width
Depth
3
3
1
1 14
1 12
13 4
2
1
1 14
1 12
1 12
1 12
32
1
8
3
16
1
4
5
16
3
8
1
2
5
8
3
4
7
8
32
1
8
3
16
1
4
5
16
3
8
1
2
5
8
3
4
7
8
83
Bushing Bore and Keyseat Information — continued
Specifying English and Metric Keyways
Dimensioning and specifying metric keys and keyways varies significantly from the English system. In the English system, it is the
standard practice to dimension the keyway, while in the metric
system it is common practice to specify the key size. In the English
system, the keyway in the hub is dimensioned by the width and
depth at the side, but in the metric system the keyway is
dimensioned by the width and the depth measured from the radius
of the shaft to the center of the keyway. One of the following methods should be used to specify keyways:
English:
Metric:
W x T Key
W x T1 Keyway
W x T Key
W x h Keyway
Unless otherwise noted, the keyway in the shaft is assumed to be
standard. Also, T1 and T2 are not necessarily equal.
W
h
T1
T
r
H
T2
The metric system does not refer to keyseat or keyway dimensions as does the English system. Instead, dimensions are given
for the key itself which is rectangular in shape, not square, as in
the English system. The correct terminology when ordering metric
bored bushings with millimeter keyways will be either of the following:
1. Specify “standard Keyway”
2. Customer to specify keysize (keyseat to be
standard size in shaft)
Metric Bore and Key Dimensions for Taper-Lock Bushings
Bushing
1008
1108
1210
1610
2012
2517
3020
Bore
(mm)
Keyway (WxT)
(mm)
Key Size (ref.)
(mm)
14, 16
18, 19, 20, 22
24
14*, 16
18, 19, 20, 22
24, 25
14, 16
18, 19, 20, 22*
24, 25, 28, 30
14*, 16*
18*, 19, 20, 22
24, 25, 28, 30
32, 35, 38
40
14, 16
18, 19, 20, 22
24, 25, 28, 30
32, 35, 38
40, 42
45, 48*
14, 16
18, 19*, 20, 22
24, 25, 28, 30
32, 35, 38
40, 42
45, 48, 50
55
60, 65*
24, 25, 28, 30*
32*, 35*, 38*
40, 42*
45, 48, 50
55
60, 65
70*, 75*
5 X 2.3
6 X 2.8
8 X 3.3
5 X 2.3
6 X 2.8
8 X 3.3
5 X 2.3
6 X 2.8
8 X 3.3
5 X 2.3
6 X 2.8
8 X 3.3
10 X 3.3
12 X 3.3
5 X 2.3
6 X 2.8
8 X 3.3
10 X 3.3
12 X 3.3
14 X 3.8
5 X 2.3
6 X 2.8
8 X 3.3
10 X 3.3
12 X 3.3
14 X 3.8
16 X 4.3
18 X 4.4
8 X 3.3
10 X 3.3
12 X 3.3
14 X 3.8
16 X 4.3
18 X 4.4
20 X 4.9
5X5
6X6
8X7
5X5
6X6
8X7
5X5
6X6
8X7
5X5
6X6
8X7
10 X 8
12 X 8
5X5
6X6
8X7
10 X 8
12 X 8
14 X 9
5X5
6X6
8X7
10 X 8
12 X 8
14 X 9
16 X 10
18 X 11
8X7
10 X 8
12 X 8
14 X 9
16 X 10
18 X 11
20 X 12
* Non-stock, made to order bushing
84
R
Taper-Lock Type Sprocket Installation and Removal
To Install TAPER-LOCK Type Bushings
1. Clean the shaft, bore of bushing, outside of bushing and the
sprocket hub bore of all oil, paint and dirt. File away any burrs.
Note: The use of lubricants can cause sprocket breakage.
USE NO LUBRICANTS IN THIS INSTALLATION.
2. Insert the bushing into the sprocket hub. Match the hole pattern, not threaded holes (each complete hole will be threaded
on one side only).
3, LIGHTLY oil the set screws and thread them into those
half-threaded holes indicated by on the diagram above.
Note: Do not lubricate the bushing taper, hub taper, bushing
bore, or the shaft. Doing so could result in sprocket breakage.
4. With the key in the shaft keyway, position the assembly onto
the shaft allowing for small axial movement of the sprocket
which will occur during the tightening process.
Note: When mounting sprockets on a vertical shaft, precautions must be taken to positively prevent the sprocket and/or
bushing from falling during installation.
5. Alternately torque the set screws until the sprocket and bushing tapers are completely seated together (at approximately
half of the recommended torque; see table below).
Note: Do not use worn hex key wrenches. Doing so may result in a loose assembly or may damage screws.
6. Check the alignment and sprocket axial runout (wobble), and
correct as necessary.
7. Continue alternate tightening of the cap screws to the recommended torque values specified in the table below.
8. To increase the bushing gripping force, hammer the face of
the bushing using a drift or sleeve (Do Not Hit The Bushing Directly With The Hammer).
9. Re-torque the bushing screws after hammering.
10. Recheck all screw torque values after the initial drive run-in,
and periodically thereafter. Repeat steps 5 through 9 if loose.
To Remove
1. Loosen and remove all mounting screws.
2. Insert screws into all jack screw holes indicated by “
(see figure above).
3. Loosen the bushing by alternately tightening the screws in
small but equal increments until the tapered sprocket and
bushing surfaces disengage.
•”
Sprocket Installation
Bolts
Torque Wrench
Bushing
Style
Qty.
Size
lb-ft
lb-in
1008
1108
1210
1610
1615
2012
2517
3020
3525
3535
4030
4040
4535
4545
5040
6050
7060
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
4
1/4-20 x 1/2
1/4-20 x 1/2
3/8-16 x 5/8
3/8-16 x 5/8
3/8-16 x 5/8
7/16-14 x 7/8
1/2-13 x 1
5/8-11 x 1 1/4
1/2-13 x 1 1/2
1/2-13 x 1 1/2
5/8-11 x 1 3/4
5/8-11 x 1 3/4
3/4-10 x 2
3/4-10 x 2
7/8-9 x 2 1/4
1 1/4-7 x 3 1/2
1 1/4-7 x 3 1/2
4.6
4.6
14.6
14.6
14.6
23.3
35.8
66.7
83.3
83.3
142
142
204
204
258
652
652
55
55
175
175
175
280
430
800
1000
1000
1700
1700
2450
2450
3100
7820
7820
Caution: Excessive bolt torque can cause sprocket and/or bushing breakage.
Note: To insure proper bushing/sprocket performance, full bushing contact on the shaft is recommended.
R
85
Belt Drive Tensioners
(Double Adjustable)
H
J
A
B
C
E
F
D
G-BOLT
M
TAP
N
Q
G-BOLT
P
Specifications
Tensioned
Product No.
Use
With
Part
No.
A
(in)
B
(in)
C
(in)
D
(in)
E
(in)
F
(in)
G
(in)
H
(in)
J
(in)
M
(Threads)
N
(in)
P
(in)
Q
(in)
Weight
(lb)
7720-2010
8mm Pitch
10-IDL-BRAK2
Poly Chain GT2
4.63
3.50
1.75
2.00
2.06
3.06
0.38
1.50
0.56
3
-16
1.00
1.88
1.75
2.7
7720-2020
14mm Pitch
20-IDL-BRAK2
Poly Chain GT2
6.94
5.25
2.63
5.00
3.00
4.56
0.63
2.38
1.00
1-14
1.63
2.94
0.75
10.8
Wt.
(lb)
4
Poly Chain GT 2 Idler Sprockets
®
®
D
G
C
F
H
O.D. J B
E
Poly Chain GT 2 Idler Dimensions
O.D.
(in)
B
Ref.
(in)
C
(in)
D
(in)
E
F
G
Ref. (Threads) Ref.
(in)
(in)
(in)
H
(in)
J
(in)
32
3.145
1.25
0.50
0.85
1.56
3
21
32
3.145
1.25
0.50
1.24
1.56
3
8MX-36S-36
36
36
3.546
1.91
0.75
1.86
1.63
3
-16
4
62-IDL-SPK2
8MX-36S-62
62
36
3.546
1.91
0.75
2.91
1.69
3
-16
4
0.69
3.13
—
2.1
20-IDL-SPK2
14MX-30S-20
20
30
5.153
2.55
1.00
1.36
2.25
1-14
1.00
4.38
—
9.0
37-IDL-SPK2
14MX-30S-37
37
30
5.153
2.55
1.00
2.06
2.25
1-14
0.25
4.38
—
12.0
68-IDL-SPK2
14MX-34S-68
68
34
5.855
3.38
0.56
3.33
2.25
1-14
1.00
4.88
4.34
7720-1830
90-IDL-SPK2
14MX-34S-90
90
34
5.855
3.38
0.31
4.20
2.25
1-14
1.00
4.88
4.34
16.7
7720-1840
125-IDL-SPK2
14MX-35S-125
125
35
6.031
3.38
0.19
5.61
2.25
1-14
1.09
4.88
4.34
23.1
Product
No.
Use
With
Belt
Width No. of
(in) Teeth
Part
No.
Size
Designation
12-IDL-SPK2
8MX-32S-12
12
21-IDL-SPK2
8MX-32S-21
36-IDL-SPK2
7720-1730
7720-1800
7720-1700
7720-1710
7720-1720
8mm Pitch
Poly Chain GT2
7720-1810
7720-1820
86
14mm Pitch
Poly Chain GT2
R
4
-16
0.94
2.75
—
1.0
4
-16
0.56
2.75
—
1.1
—
—
—
2.0
15.6
Poly Chain® GT ®2 Sprocket Diameter Table
8mm Pitch Sprocket Diameters
No.
Diameters
of
Grooves
PD
mm*
in
OD
No.
Diameters
of
Grooves
PD
mm*
in
OD
No.
Diameters
of
Grooves
PD
mm*
in
OD
No.
Diameters
of
Grooves
PD
56.02
54.42
129.87
128.27
203.72
202.12
22
51
80
109
2.206
2.143
5.113
5.050
8.020
7.957
58.57
56.97
132.42
130.82
206.26
204.66
23
52
81
110
2.306
2.243
5.213
5.150
8.121
8.058
61.12
59.52
134.96
133.36
208.81
207.21
24
53
82
111
2.406
2.343
5.314
5.251
8.221
8.158
63.66
62.06
137.51
135.91
211.36
209.76
25
54
83
112
2.506
2.443
5.414
5.351
8.321
8.258
66.21
64.61
140.06
138.46
213.90
212.30
26
55
84
113
2.607
2.544
5.514
5.451
8.421
8.358
68.75
67.15
142.60
141.00
216.45
214.85
27
56
85
114
2.707
2.644
5.614
5.551
8.522
8.459
71.30
69.70
145.15
143.55
219.00
217.40
28
57
86
115
2.807
2.744
5.715
5.652
8.622
8.559
73.85
72.25
147.70
146.10
221.54
219.94
29
58
87
116
2.907
2.844
5.815
5.752
8.722
8.659
76.39
74.79
150.24
148.64
224.09
222.49
30
59
88
117
3.008
2.945
5.915
5.852
8.822
8.759
78.94
77.34
152.79
151.19
226.64
225.04
31
60
89
118
3.108
3.045
6.015
5.952
8.923
8.860
81.49
79.89
155.34
153.74
229.18
227.58
32
61
90
119
3.208
3.145
6.116
6.053
9.023
8.960
84.03
82.43
157.88
156.28
231.73
230.13
33
62
91
120
3.308
3.245
6.216
6.153
9.123
9.060
86.58
84.98
160.43
158.83
234.28
232.68
34
63
92
121
3.409
3.346
6.316
6.253
9.223
9.160
89.13
87.53
162.97
161.37
236.82
235.22
35
64
93
122
3.509
3.446
6.416
6.353
9.324
9.261
91.67
90.07
165.52
163.92
239.37
237.77
36
65
94
123
3.609
3.546
6.517
6.454
9.424
9.361
94.22
92.62
168.07
166.47
241.92
240.32
37
66
95
124
3.709
3.646
6.617
6.554
9.524
9.461
96.77
95.17
170.61
169.01
244.46
242.86
38
67
96
125
3.810
3.747
6.717
6.654
9.624
9.561
99.31
97.71
173.16
171.56
247.01
245.41
39
68
97
126
3.910
3.847
6.817
6.754
9.725
9.662
101.86
100.26
175.71
174.11
249.55
247.95
40
69
98
127
4.010
3.947
6.918
6.855
9.825
9.762
104.41
102.81
178.25
176.65
252.10
250.50
41
70
99
128
4.110
4.047
7.018
6.955
9.925
9.862
106.95
105.35
180.80
179.20
254.65
253.05
42
71
100
129
4.211
4.148
7.118
7.055
10.026
9.963
109.50
107.90
183.35
181.75
257.19
255.59
43
72
101
130
4.311
4.248
7.218
7.155
10.126
10.063
112.05
110.45
185.89
184.29
259.74
258.14
44
73
102
131
4.411
4.348
7.319
7.256
10.226
10.163
114.59
112.99
188.44
186.84
262.29
260.69
45
74
103
132
4.511
4.448
7.419
7.356
10.326
10.263
117.14
115.54
190.99
189.39
264.83
263.23
46
75
104
133
4.612
4.549
7.519
7.456
10.427
10.364
119.68
118.08
193.53
191.93
267.38
265.78
47
76
105
134
4.712
4.649
7.619
7.556
10.527
10.464
122.23
120.63
196.08
194.48
269.93
268.33
48
77
106
135
4.812
4.749
7.720
7.657
10.627
10.564
124.78
123.18
198.63
197.03
272.47
270.87
49
78
107
136
4.912
4.849
7.820
7.757
10.727
10.664
127.32
125.72
201.17
199.57
275.02
273.42
50
79
108
137
5.013
4.950
7.920
7.857
10.828
10.765
* Dimensions are given in inches and millimeters. Inches are shown in black in bold face type.
Millimeters are shown in blue in light face type.
277.57
10.928
280.11
11.028
282.66
11.128
285.21
11.229
287.75
11.329
290.30
11.429
292.85
11.529
295.39
11.630
297.94
11.730
300.48
11.830
303.03
11.930
305.58
12.031
308.12
12.131
310.67
12.231
313.22
12.331
315.76
12.432
318.31
12.532
320.86
12.632
323.40
12.732
325.95
12.833
328.50
12.933
331.04
13.033
333.59
13.133
336.14
13.234
338.68
13.334
341.23
13.434
343.77
13.534
346.32
13.635
348.87
13.735
mm*
in
OD
275.97
10.865
278.51
10.965
281.06
11.065
283.61
11.166
286.15
11.266
288.70
11.366
291.25
11.466
293.79
11.567
296.34
11.667
298.88
11.767
301.43
11.867
303.98
11.968
306.52
12.068
309.07
12.168
311.62
12.268
314.16
12.369
316.71
12.469
319.26
12.569
321.80
12.669
324.35
12.770
326.90
12.870
329.44
12.970
331.99
13.070
334.54
13.171
337.08
13.271
339.63
13.371
342.17
13.471
344.72
13.572
347.27
13.672
No.
Diameters
of
Grooves
PD
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
351.41
13.835
353.96
13.935
356.51
14.036
359.05
14.136
361.60
14.236
364.15
14.336
366.69
14.437
369.24
14.537
371.79
14.637
374.33
14.737
376.88
14.838
379.43
14.938
381.97
15.038
384.52
15.139
387.06
15.239
389.61
15.339
392.16
15.439
394.70
15.540
397.25
15.640
399.80
15.740
402.34
15.840
404.89
15.941
407.44
16.041
409.98
16.141
412.53
16.241
415.08
16.342
417.62
16.442
420.17
16.542
422.72
16.642
mm*
in
OD
349.81
13.772
352.36
13.872
354.91
13.973
357.45
14.073
360.00
14.173
362.55
14.273
365.09
14.374
367.64
14.474
370.19
14.574
372.73
14.674
375.28
14.775
377.83
14.875
380.37
14.975
382.92
15.076
385.46
15.176
388.01
15.276
390.56
15.376
393.10
15.477
395.65
15.577
398.20
15.677
400.74
15.777
403.29
15.878
405.84
15.978
408.38
16.078
410.93
16.178
413.48
16.279
416.02
16.379
418.57
16.479
421.12
16.579
Stock sprockets are shown shaded.
R
87
No.
Diameters
of
Grooves
PD
167
168
169
170
171
172
173
174
175
176
177
178
425.26
16.743
427.81
16.843
430.35
16.943
432.90
17.043
435.45
17.144
437.99
17.244
440.54
17.344
443.09
17.444
445.63
17.545
448.18
17.645
450.73
17.745
453.27
17.845
mm*
in
OD
423.66
16.680
426.21
16.780
428.75
16.880
431.30
16.980
433.85
17.081
436.39
17.181
438.94
17.281
441.49
17.381
444.03
17.482
446.58
17.582
449.13
17.682
451.67
17.782
No.
Diameters
of
Grooves
PD
179
180
181
182
183
184
185
186
187
188
189
190
455.82
17.946
458.37
18.046
460.91
18.146
463.46
18.246
466.01
18.347
468.55
18.447
471.10
18.547
473.65
18.647
476.19
18.748
478.74
18.848
481.28
18.948
483.83
19.048
mm*
in
No.
Diameters
of
Grooves
PD
OD
454.22
17.883
456.77
17.983
459.31
18.083
461.86
18.183
464.41
18.284
466.95
18.384
469.50
18.484
472.05
18.584
474.59
18.685
477.14
18.785
479.68
18.885
482.23
18.985
191
192
193
194
195
196
197
198
199
200
201
202
486.38
19.149
488.92
19.249
491.47
19.349
494.02
19.449
496.56
19.550
499.11
19.650
501.66
19.750
504.20
19.851
506.75
19.951
509.30
20.051
511.84
20.151
514.39
20.252
mm*
in
OD
484.78
19.086
487.32
19.186
489.87
19.286
492.42
19.386
494.96
19.487
497.51
19.587
500.06
19.687
502.60
19.788
505.15
19.888
507.70
19.988
510.24
20.088
512.79
20.189
No.
Diameters
of
Grooves
PD
203
204
205
206
207
208
209
210
211
212
213
214
516.94
20.352
519.48
20.452
522.03
20.552
524.57
20.653
527.12
20.753
529.67
20.853
532.21
20.953
534.76
21.054
537.31
21.154
539.85
21.254
542.40
21.354
544.95
21.455
mm*
in
OD
515.34
20.289
517.88
20.389
520.43
20.489
522.97
20.590
525.52
20.690
528.07
20.790
530.61
20.890
533.16
20.991
535.71
21.091
538.25
21.191
540.80
21.291
543.35
21.392
No.
Diameters
of
Grooves
PD
215
216
217
218
219
220
221
222
223
224
547.49
21.555
550.04
21.655
552.59
21.755
555.13
21.856
557.68
21.956
560.23
22.056
562.77
22.156
565.32
22.257
567.86
22.357
570.41
22.457
mm*
in
OD
545.89
21.492
548.44
21.592
550.99
21.692
553.53
21.793
556.08
21.893
558.63
21.993
561.17
22.093
563.72
22.194
566.26
22.294
568.81
22.394
No.
Diameters
of
Grooves
PD
mm*
in
OD
No.
Diameters
of
Grooves
PD
mm*
in
No.
Diameters
of
Grooves
PD
OD
mm*
in
OD
No.
Diameters
of
Grooves
PD
124.78
121.98
178.25
175.45
231.73
228.93
40
52
64
4.912
4.802
7.018
6.908
9.123
9.013
129.23
126.43
182.71
179.91
236.19
233.39
29
41
53
65
5.088
4.978
7.193
7.083
9.299
9.189
133.69
130.89
187.17
184.37
240.64
237.84
30
42
54
66
5.263
5.153
7.369
7.259
9.474
9.364
138.15
135.35
191.62
188.82
245.10
242.30
31
43
55
67
5.439
5.329
7.544
7.434
9.650
9.540
142.60
139.80
196.08
193.28
249.55
246.75
32
44
56
68
5.614
5.504
7.720
7.610
9.825
9.715
147.06
144.26
200.54
197.74
254.01
251.21
33
45
57
69
5.790
5.680
7.895
7.785
10.000
9.890
151.52
148.72
204.99
202.19
258.47
255.67
34
46
58
70
5.965
5.855
8.071
7.961
10.176
10.066
155.97
153.17
209.45
206.65
262.92
260.12
35
47
59
71
6.141
6.031
8.246
8.136
10.351
10.241
160.43
157.63
213.90
211.10
267.38
264.58
36
48
60
72
6.316
6.206
8.421
8.311
10.527
10.417
164.88
162.08
218.36
215.56
271.84
269.04
37
49
61
73
6.492
6.382
8.597
8.487
10.702
10.592
169.34
166.54
222.82
220.02
276.29
273.49
38
50
62
74
6.667
6.557
8.772
8.662
10.878
10.768
173.80
171.00
227.27
224.47
280.75
277.95
39
51
63
75
6.842
6.732
8.948
8.838
11.053
10.943
28
88
R
285.21
11.229
289.66
11.404
294.12
11.579
298.57
11.755
303.03
11.930
307.49
12.106
311.94
12.281
316.40
12.457
320.86
12.632
325.31
12.808
329.77
12.983
334.23
13.158
mm*
in
OD
282.41
11.119
286.86
11.294
291.32
11.469
295.77
11.645
300.23
11.820
304.69
11.996
309.14
12.171
313.60
12.347
318.06
12.522
322.51
12.698
326.97
12.873
331.43
13.048
No.
Diameters
of
Grooves
PD
76
77
78
79
80
81
82
83
84
85
86
87
338.68
13.334
343.14
13.509
347.59
13.685
352.05
13.860
356.51
14.036
360.96
14.211
365.42
14.387
369.88
14.562
374.33
14.737
378.79
14.913
383.25
15.088
387.70
15.264
mm*
in
OD
335.88
13.224
340.34
13.399
344.79
13.575
349.25
13.750
353.71
13.926
358.16
14.101
362.62
14.277
367.08
14.452
371.53
14.627
375.99
14.803
380.45
14.978
384.90
15.154
No.
Diameters
of
Grooves
PD
392.16
88
15.439
396.61
89
15.615
401.07
90
15.790
405.53
91
15.966
409.98
92
16.141
414.44
93
16.317
418.90
94
16.492
423.35
95
16.667
427.81
96
16.843
432.26
97
17.018
436.72
98
17.194
441.18
99
17.369
445.63
100
17.545
450.09
101
17.720
454.55
102
17.896
459.00
103
18.071
463.46
104
18.246
467.92
105
18.422
472.37
106
18.597
476.83
107
18.773
481.28
108
18.948
485.74
109
19.124
490.20
110
19.299
494.65
111
19.475
499.11
112
19.650
503.57
113
19.825
508.02
114
20.001
512.48
115
20.176
mm*
in
OD
389.36
15.329
393.81
15.505
398.27
15.680
402.73
15.856
407.18
16.031
411.64
16.207
416.10
16.382
420.55
16.557
425.01
16.733
429.46
16.908
433.92
17.084
438.38
17.259
442.83
17.435
447.29
17.610
451.75
17.786
456.20
17.961
460.66
18.136
465.12
18.312
469.57
18.487
474.03
18.663
478.48
18.838
482.94
19.014
487.40
19.189
491.85
19.365
496.31
19.540
500.77
19.715
505.22
19.891
509.68
20.066
No.
Diameters
of
Grooves
PD
516.94
116
20.352
521.39
117
20.527
525.85
118
20.703
530.30
119
20.878
534.76
120
21.054
539.22
121
21.229
543.67
122
21.404
548.13
123
21.580
552.59
124
21.755
557.04
125
21.931
561.50
126
22.106
565.95
127
22.282
570.41
128
22.457
574.87
129
22.633
579.32
130
22.808
583.78
131
22.983
588.24
132
23.159
592.69
133
23.334
597.15
134
23.510
601.61
135
23.685
606.06
136
23.861
610.52
137
24.036
614.97
138
24.212
619.43
139
24.387
623.89
140
24.562
628.34
141
24.738
632.80
142
24.913
637.26
143
25.089
mm*
in
OD
514.14
20.242
518.59
20.417
523.05
20.593
527.50
20.768
531.96
20.944
536.42
21.119
540.87
21.294
545.33
21.470
549.79
21.645
554.24
21.821
558.70
21.996
563.15
22.172
567.61
22.347
572.07
22.523
576.52
22.698
580.98
22.873
585.44
23.049
589.89
23.224
594.35
23.400
598.81
23.575
603.26
23.751
607.72
23.926
612.17
24.102
616.63
24.277
621.09
24.452
625.54
24.628
630.00
24.803
634.46
24.979
No.
Diameters
of
Grooves
PD
641.71
144
25.264
646.17
145
25.440
650.63
146
25.615
655.08
147
25.791
659.54
148
25.966
663.99
149
26.142
668.45
150
26.317
672.91
151
26.492
677.36
152
26.668
681.82
153
26.843
686.28
154
27.019
690.73
155
27.194
695.19
156
27.370
699.65
157
27.545
704.10
158
27.721
708.56
159
27.896
713.01
160
28.071
717.47
161
28.247
721.93
162
28.422
726.38
163
28.598
730.84
164
28.773
735.30
165
28.949
739.75
166
29.124
744.21
167
29.300
748.66
168
29.475
753.12
169
29.650
757.58
170
29.826
762.03
171
30.001
mm*
in
OD
638.91
25.154
643.37
25.330
647.83
25.505
652.28
25.681
656.74
25.856
661.19
26.032
665.65
26.207
670.11
26.382
674.56
26.558
679.02
26.733
683.48
26.909
687.93
27.084
692.39
27.260
696.85
27.435
701.30
27.611
705.76
27.786
710.21
27.961
714.67
28.137
719.13
28.312
723.58
28.488
728.04
28.663
732.50
28.839
736.95
29.014
741.41
29.190
745.86
29.365
750.32
29.540
754.78
29.716
759.23
29.891
No.
Diameters
of
Grooves
PD
766.49
172
30.177
770.95
173
30.352
775.40
174
30.528
779.86
175
30.703
784.32
176
30.879
788.77
177
31.054
793.23
178
31.229
797.68
179
31.405
802.14
180
31.580
806.60
181
31.756
811.05
182
31.931
815.51
183
32.107
819.97
184
32.282
824.42
185
32.458
828.88
186
32.633
833.34
187
32.808
837.79
188
32.984
842.25
189
33.159
846.70
190
33.335
851.16
191
33.510
855.62
192
33.686
860.07
193
33.861
864.53
194
34.037
868.99
195
34.212
873.44
196
34.387
877.90
197
34.563
882.36
198
34.738
886.81
199
34.914
mm*
in
OD
763.69
30.067
768.15
30.242
772.60
30.418
777.06
30.593
781.52
30.769
785.97
30.944
790.43
31.119
794.88
31.295
799.34
31.470
803.80
31.646
808.25
31.821
812.71
31.997
817.17
32.172
821.62
32.348
826.08
32.523
830.54
32.698
834.99
32.874
839.45
33.049
843.90
33.225
848.36
33.400
852.82
33.576
857.27
33.751
861.73
33.927
866.19
34.102
870.64
34.277
875.10
34.453
879.56
34.628
884.01
34.804
No.
Diameters
of
Grooves
PD
891.27
200
35.089
895.72
201
35.265
900.18
202
35.440
904.64
203
35.616
909.09
204
35.791
913.55
205
35.967
918.01
206
36.142
922.46
207
36.317
926.92
208
36.493
931.37
209
36.668
935.83
210
36.844
940.29
211
37.019
944.74
212
37.195
949.20
213
37.370
953.66
214
37.546
958.11
215
37.721
962.57
216
37.896
967.03
217
38.072
971.48
218
38.247
975.94
219
38.423
980.39
220
38.598
984.85
221
38.774
989.31
222
38.949
993.76
223
39.125
998.22
224
39.300
mm*
in
OD
888.47
34.979
892.92
35.155
897.38
35.330
901.84
35.506
906.29
35.681
910.75
35.857
915.21
36.032
919.66
36.207
924.12
36.383
928.57
36.558
933.03
36.734
937.49
36.909
941.94
37.085
946.40
37.260
950.86
37.436
955.31
37.611
959.77
37.786
964.23
37.962
968.68
38.137
973.14
38.313
977.59
38.488
982.05
38.664
986.51
38.839
990.96
39.015
995.42
39.190
R
89
Gates Short-Length Poly Chain GT Belt Drive Systems
For especially small and compact drive systems that demand utmost robustness, Poly Chain GT belts are now
available in a series of short lengths. These unique belts
are available in 8mm pitch only, and in standard 12mm,
21mm, and 36mm widths. Now the unsurpassed performance and reliability of Poly Chain GT can be utilized in
spaces smaller than ever before.
ety of both regular and irregular shaped commodities, from
light and fragile to heavy and rugged loading.
In the “Roll-to-Roll” conveying arrangement, two sprockets
are attached to each roller, and individual loops of roller
chain or belts connect pairs of rollers in a staggered pattern
along the length of the conveyor. This design is ideal for
handling heavy loads and for applications requiring frequent stopping or reversing service. Idler rollers without
sprockets are sometimes inserted between the driven rollers. A typical “Roll-to-Roll” conveyer system is illustrated in
the photo at left..
Positive driven live roller conveyors are better suited than
V-belt or round belt driven units on applications where heat,
dirt, oil, water and other contaminants are present.
Comparison To Roller Chain
Short-Length Poly Chain GT belts compete well on a width
to width basis with roller chain on both low and high speed
applications. The following chart compares 8mm Poly
Chain GT with #40 and #50 roller chain.
Short-Length Poly Chain GT belts utilize the same construction as conventional Poly Chain GT belts, that have
proven themselves over and over in industry since their introduction in 1986. Because of their unique manufacturing
process, these short belts have a smooth back instead of
the ribbed back used with conventional Poly Chain GT
belts. They are also fully compatible with standard Poly
Chain GT and Poly Chain GT2 sprockets.
25
20
15
10
Typical Applications
Short-Length Poly Chain GT belts should be considered in
any application requiring heavy torque loads or rugged durability in a very compact area. Drives utilizing sprockets
as small as 2.5″ P.D. with a center distance of 3″ are rated
for loads in excess of 12 hp at 1800 rpm.
Live roller conveyers are a natural application for
Short-Length Poly Chain GT belt drive systems. Live roller
conveyers are used for controlled movement of a great vari-
90
Horsepower Rating Comparison
R
5
0
0
20
50
100
300
500
700
RPM
#40 Roller Chain – 16T sprocket
#50 Roller Chain – 12T Sprocket
#60 Roller Chain – 11T Sprocket
900
1200 16
00 2000
8mm PCGT – 12mm – 25T Sprocket
Short-Length 8mm Poly Chain® GT® Belt System Specifications
8mm Pitch Lengths
Designations
No. of Teeth
Length
mm
In
8M-352
44
352
13.858
8M-416
52
416
16.378
8M-456
57
456
17.953
8M-480
60
480
18.898
8M-544
68
544
21.417
8M-608
76
608
23.937
8mm Widths
12mm
21mm
36mm
.47″
.83″
1.42″
Dimensions are given in inches and millimeters. Inches are shown in black
type. Millimeters are shown in blue type.
Gates Short-Length Poly Chain GT belts are designed to
run in Gates Poly Chain GT2 sprockets. See the Sprocket
Specification Tables on pages 72-73 for a listing of available sizes, pertinent dimensions, applicable bushing sizes,
bore ranges, etc. See page 20 for an explanation for the
sprocket code symbol used for Poly Chain GT2 sprockets.
When designing Short-Length Poly Chain GT drives refer
to either the Low Speed Drive Design Procedure (generally
less than 500 rpm) on pages 14-19 , or the High Speed
Drive Design Procedure on pages 22-25, but substitute
Table 9 on pages 92-93 for belt length and center distance
selections, and the tables on pages 94-96 for horsepower
ratings.
R
91
Table No. 9
8mm PITCH BELTS
Sprocket Combinations
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.050
1.053
1.056
1.059
1.063
1.067
1.071
1.071
1.105
1.111
1.118
1.120
1.125
1.125
1.133
1.136
1.143
1.167
1.176
1.184
1.188
1.200
1.200
1.200
1.214
1.235
1.250
1.250
1.263
1.267
1.273
1.280
1.286
1.313
1.316
1.324
1.333
1.333
1.357
1.360
1.364
1.389
1.400
1.406
1.412
1.429
1.440
1.455
1.471
8M-608
P.L. 23.937
76 Teeth
22
2.206
25
2.506
28
2.807
30
3.008
32
3.208
34
3.409
36
3.609
38
3.810
40
4.010
42
4.211
42
4.211
40
4.010
38
3.810
36
3.609
34
3.409
32
3.208
30
3.008
45
4.511
42
4.211
40
4.010
38
3.810
28
2.807
36
3.609
45
4.511
34
3.409
25
2.506
32
3.208
42
4.211
40
4.010
45
4.511
38
3.810
30
3.008
36
3.609
48
4.812
34
3.409
42
4.211
40
4.010
45
4.511
48
4.812
38
3.810
28
2.807
32
3.208
36
3.609
42
4.211
50
5.013
45
4.511
40
4.010
48
4.812
38
3.810
34
3.409
30
3.008
50
5.013
42
4.211
45
4.511
48
4.812
40
4.010
36
3.609
32
3.208
50
5.013
Length Factor*
8M-544
P.L. 21.417
68 Teeth
2.206
2.506
2.807
3.008
3.208
3.409
3.609
3.810
4.010
4.211
4.010
3.810
3.609
3.409
3.208
3.008
2.807
4.211
3.810
3.609
3.409
2.506
3.208
4.010
3.008
2.206
2.807
3.609
3.409
3.810
3.208
2.506
3.008
4.010
2.807
3.409
3.208
3.609
3.810
3.008
2.206
2.506
2.807
3.208
3.810
3.409
3.008
3.609
2.807
2.506
2.206
3.609
3.008
3.208
3.409
2.807
2.506
2.206
3.409
8M-480
P.L. 18.898
60 Teeth
22
25
28
30
32
34
36
38
40
42
40
38
36
34
32
30
28
42
38
36
34
25
32
40
30
22
28
36
34
38
32
25
30
40
28
34
32
36
38
30
22
25
28
32
38
34
30
36
28
25
22
36
30
32
34
28
25
22
34
Speed
Ratio
8M-456
P.L. 17.953
57 Teeth
No. of Pitch Diam. No. of Pitch Diam.
Grooves
Inches
Grooves
Inches
8M-416
P.L. 16.378
52 Teeth
DriveN
8M-352
P.L. 13.858
44 Teeth
DriveR
3.46
2.99
4.72
4.25
3.78
5.51
5.04
4.57
4.25
3.94
5.98
5.51
5.04
4.73
4.41
4.10
7.24
6.77
6.30
5.99
5.67
5.36
5.04
4.73
8.50
8.03
7.56
7.25
6.93
6.62
6.30
5.99
5.67
5.36
5.51
5.83
6.14
6.46
6.77
7.09
7.40
5.12
5.67
5.98
6.30
7.80
6.61
5.27
6.93
8.27
7.24
5.82
6.14
5.42
6.45
7.64
6.77
5.03
7.08
5.97
6.29
5.57
5.17
6.60
8.03
7.47
6.92
6.12
5.00
5.72
6.44
5.32
6.75
7.31
7.86
5.15
6.27
5.87
5.47
6.59
7.15
7.70
5.29
0.81
3.62
3.23
4.09
4.41
4.25
4.57
4.88
4.57
4.88
5.20
5.51
5.83
6.14
4.72
5.04
6.54
5.35
4.01
4.80
5.28
4.09
4.49
3.93
5.27
4.25
4.41
5.75
4.72
3.85
4.64
5.11
4.24
4.08
4.56
5.82
4.71
5.02
5.03
4.47
3.92
4.08
5.50
4.95
4.39
5.34
6.77
6.21
5.66
4.86
4.24
3.69
5.67
7.01
5.98
4.56
4.87
5.19
6.37
5.50
4.46
5.17
3.52
4.08
4.31
4.86
4.22
4.78
5.34
5.49
6.05
6.60
5.00
4.60
0.65
3.91
4.14
4.70
4.05
4.61
5.17
5.32
5.88
6.44
0.70
0.73
0.74
0.78
*This length correction factor must be used to determine the proper belt width.
92
R
Speed
Ratio
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.050
1.053
1.056
1.059
1.063
1.067
1.071
1.071
1.105
1.111
1.118
1.120
1.125
1.125
1.133
1.136
1.143
1.167
1.176
1.184
1.188
1.200
1.200
1.200
1.214
1.235
1.250
1.250
1.263
1.267
1.273
1.280
1.286
1.313
1.316
1.324
1.333
1.333
1.357
1.360
1.364
1.389
1.400
1.406
1.412
1.429
1.440
1.455
1.471
DriveR
DriveN
No. of
Grooves
No. of
Grooves
22
25
28
30
32
34
36
38
40
42
40
38
36
34
32
30
28
42
38
36
34
25
32
40
30
22
28
36
34
38
32
25
30
40
28
34
32
36
38
30
22
25
28
32
38
34
30
36
28
25
22
36
30
32
34
28
25
22
34
22
25
28
30
32
34
36
38
40
42
42
40
38
36
34
32
30
45
42
40
38
28
36
45
34
25
32
42
40
45
38
30
36
48
34
42
40
45
48
38
28
32
36
42
50
45
40
48
38
34
30
50
42
45
48
40
36
32
50
Table No. 9
8mm PITCH BELTS
42
4.211
45
4.511
48
4.812
38
3.810
34
3.409
53
5.314
50
5.013
40
4.010
48
4.812
45
4.511
36
3.609
53
5.314
50
5.013
42
4.211
48
4.812
38
3.810
56
5.614
53
5.314
50
5.013
45
4.511
40
4.010
56
5.614
53
5.314
42
4.211
48
4.812
50
5.013
56
5.614
45
4.511
53
5.314
48
4.812
56
5.614
50
5.013
60
6.015
53
5.314
56
5.614
60
6.015
63
6.316
Length Factor*
1.500
1.500
1.500
1.520
1.545
1.559
1.563
1.600
1.600
1.607
1.636
1.656
1.667
1.680
1.714
1.727
1.750
1.767
1.786
1.800
1.818
1.867
1.893
1.909
1.920
2.000
2.000
2.045
2.120
2.182
2.240
2.273
2.400
2.409
2.545
2.727
2.864
3.73
3.55
8M-480
P.L. 18.898
60 Teeth
8M-608
P.L. 23.937
76 Teeth
2.807
3.008
3.208
2.506
2.206
3.409
3.208
2.506
3.008
2.807
2.206
3.208
3.008
2.506
2.807
2.206
3.208
3.008
2.807
2.506
2.206
3.008
2.807
2.206
2.506
2.506
2.807
2.206
2.506
2.206
2.506
2.206
2.506
2.206
2.206
2.206
2.206
8M-544
P.L. 21.417
68 Teeth
28
30
32
25
22
34
32
25
30
28
22
32
30
25
28
22
32
30
28
25
22
30
28
22
25
25
28
22
25
22
25
22
25
22
22
22
22
Speed
Ratio
8M-456
P.L. 17.953
57 Teeth
No. of Pitch Diam. No. of Pitch Diam.
Grooves
Inches
Grooves
Inches
8M-416
P.L. 16.378
52 Teeth
DriveN
8M-352
P.L. 13.858
44 Teeth
DriveR
5.15
4.74
6.42
6.02
5.61
6.98
7.54
5.03
5.44
6.81
5.76
6.16
7.37
5.17
5.58
6.64
5.90
7.20
4.89
5.31
5.72
6.38
7.03
5.03
5.45
6.86
6.11
5.93
5.16
6.59
5.65
6.32
5.37
6.14
4.96
5.86
5.57
5.16
4.83
0.81
3.96
4.52
4.44
5.00
5.71
6.27
3.78
4.27
4.35
4.83
5.54
4.48
4.89
6.10
4.09
4.66
5.37
4.62
5.93
3.99
4.48
4.43
5.10
5.76
3.80
4.29
5.58
4.82
4.63
4.01
5.31
4.17
5.03
4.84
4.53
0.65
0.70
0.73
0.74
0.78
Speed
Ratio
1.500
1.500
1.500
1.520
1.545
1.559
1.563
1.600
1.600
1.607
1.636
1.656
1.667
1.680
1.714
1.727
1.750
1.767
1.786
1.800
1.818
1.867
1.893
1.909
1.920
2.000
2.000
2.045
2.120
2.182
2.240
2.273
2.400
2.409
2.545
2.727
2.864
DriveR
DriveN
No. of
Grooves
No. of
Grooves
28
30
32
25
22
34
32
25
30
28
22
32
30
25
28
22
32
30
28
25
22
30
28
22
25
25
28
22
25
22
25
22
25
22
22
22
22
42
45
48
38
34
53
50
40
48
45
36
53
50
42
48
38
56
53
50
45
40
56
53
42
48
50
56
45
53
48
56
50
60
53
56
60
63
*This length correction factor must be used to determine the proper belt width.
R
93
8mm Pitch Poly Chain® GT® Belts
Additional Horsepower per belt for
Speed Ratio of Speed-Down Drives
4.211
RPM
OF
FASTER
SHAFT
1.00
to
1.04
1.05
to
1.11
1.12
to
1.19
1.20
to
1.30
1.31
to
1.45
1.46
to
1.65
1.66
to
1.99
2.00
to
2.63
2.64
to
4.47
4.48
and
Over
6.6
8.3
11.6
19.4
0.13
0.25
0.46
0.66
1.04
1.90
2.68
3.43
4.14
4.82
5.49
6.1
6.8
7.4
8.6
9.7
10.8
11.8
12.8
14.8
16.6
18.3
19.6
21.5
23.2
24.8
26.2
870
1160
1750
3450
10
20
40
60
100
200
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
2400
2800
3200
3500
4000
4500
5000
5500
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.04
0.05
0.08
0.16
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.06
0.07
0.08
0.08
0.09
0.11
0.13
0.15
0.16
0.19
0.21
0.23
0.26
0.08
0.11
0.16
0.32
0.00
0.00
0.00
0.01
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.08
0.09
0.11
0.13
0.15
0.17
0.19
0.23
0.26
0.30
0.33
0.38
0.42
0.47
0.52
0.12
0.16
0.25
0.49
0.00
0.00
0.01
0.01
0.01
0.03
0.04
0.06
0.07
0.08
0.10
0.11
0.13
0.14
0.17
0.20
0.23
0.25
0.28
0.34
0.39
0.45
0.49
0.56
0.63
0.70
0.78
0.16
0.22
0.33
0.65
0.00
0.00
0.01
0.01
0.02
0.04
0.06
0.08
0.09
0.11
0.13
0.15
0.17
0.19
0.23
0.26
0.30
0.34
0.38
0.45
0.53
0.60
0.66
0.75
0.85
0.94
1.03
0.20
0.27
0.41
0.81
0.00
0.00
0.01
0.01
0.02
0.05
0.07
0.09
0.12
0.14
0.16
0.19
0.21
0.23
0.28
0.33
0.38
0.42
0.47
0.56
0.66
0.75
0.82
0.94
1.06
1.17
1.29
0.25
0.33
0.49
0.97
0.00
0.01
0.01
0.02
0.03
0.06
0.08
0.11
0.14
0.17
0.20
0.23
0.25
0.28
0.34
0.39
0.45
0.51
0.56
0.68
0.79
0.90
0.99
1.13
1.27
1.41
1.55
0.29
0.38
0.58
1.13
0.00
0.01
0.01
0.02
0.03
0.07
0.10
0.13
0.16
0.20
0.23
0.26
0.30
0.33
0.39
0.46
0.53
0.59
0.66
0.79
0.92
1.05
1.15
1.32
1.48
1.64
1.81
0.33
0.44
0.66
1.30
0.00
0.01
0.02
0.02
0.04
0.08
0.11
0.15
0.19
0.23
0.26
0.30
0.34
0.38
0.45
0.53
0.60
0.68
0.75
0.90
1.05
1.20
1.32
1.50
1.69
1.88
2.07
0.37
0.49
0.74
1.46
0.00
0.01
0.02
0.03
0.04
0.08
0.13
0.17
0.21
0.25
0.30
0.34
0.38
0.42
0.51
0.59
0.68
0.76
0.85
1.01
1.18
1.35
1.48
1.69
1.90
2.11
2.32
RPM
OF
FASTER
SHAFT
22
25
28
30
32
34
36
38
40
42
2.206
2.506
2.807
3.008
3.208
3.409
3.609
3.810
4.010
870
1160
1750
3450
10
20
40
60
100
200
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
2400
2800
3200
3500
4000
4500
5000
5500
3.14
3.96
5.47
9.13
0.07
0.12
0.23
0.33
0.51
0.92
1.30
1.66
1.99
2.32
2.63
2.93
3.23
3.51
4.06
4.59
5.10
5.59
6.07
6.97
7.83
8.64
9.23
10.2
11.0
11.8
12.6
3.68
4.64
6.4
10.8
0.08
0.14
0.26
0.38
0.59
1.07
1.52
1.93
2.33
2.71
3.08
3.43
3.78
4.12
4.77
5.39
6.0
6.6
7.1
8.2
9.2
10.2
10.9
12.0
13.0
14.0
14.9
4.21
5.32
7.4
12.4
0.09
0.16
0.30
0.43
0.67
1.22
1.73
2.20
2.66
3.09
3.52
3.93
4.32
4.71
5.46
6.2
6.9
7.6
8.2
9.4
10.6
11.7
12.5
13.8
15.0
16.1
17.2
4.55
5.8
8.0
13.5
0.09
0.17
0.32
0.46
0.73
1.32
1.87
2.38
2.88
3.35
3.81
4.25
4.68
5.10
5.9
6.7
7.5
8.2
8.9
10.2
11.5
12.7
13.6
15.0
16.3
17.5
18.6
4.90
6.2
8.6
14.5
0.10
0.19
0.35
0.50
0.78
1.42
2.01
2.56
3.09
3.60
4.09
4.57
5.04
5.49
6.4
7.2
8.0
8.8
9.6
11.0
12.4
13.7
14.6
16.1
17.5
18.8
20.0
5.24
6.6
9.2
15.5
0.11
0.20
0.37
0.53
0.83
1.52
2.14
2.74
3.30
3.85
4.38
4.89
5.39
5.9
6.8
7.7
8.6
9.4
10.2
11.8
13.3
14.7
15.7
17.2
18.7
20.0
21.3
5.58
7.1
9.8
16.5
0.11
0.21
0.39
0.56
0.88
1.61
2.28
2.91
3.52
4.10
4.66
5.20
5.7
6.3
7.3
8.2
9.1
10.0
10.9
12.6
14.1
15.6
16.7
18.3
19.9
21.3
22.6
5.9
7.5
10.4
17.5
0.12
0.22
0.42
0.60
0.93
1.71
2.42
3.09
3.73
4.34
4.94
5.51
6.1
6.6
7.7
8.7
9.7
10.6
11.6
13.3
15.0
16.5
17.6
19.4
21.0
22.5
23.8
6.2
7.9
11.0
18.4
0.13
0.24
0.44
0.63
0.99
1.80
2.55
3.26
3.93
4.58
5.21
5.8
6.4
7.0
8.1
9.2
10.2
11.2
12.2
14.1
15.8
17.4
18.6
20.4
22.1
23.6
25.0
Use this sprocket combination only is required to obtain speed ratio or to meet diameter limitations. See Engineering Section II-5 for additional details.
Poly Chain GT Belt Length
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
8M-352
8M-416
8M-456
8M-480
8M-544
8M-608
44
52
57
60
68
76
0.65
0.70
0.73
0.74
0.78
0.81
94
R
4.211
RPM
OF
FASTER
SHAFT
1.00
to
1.04
1.05
to
1.11
1.12
to
1.19
1.20
to
1.30
1.31
to
1.45
1.46
to
1.65
1.66
to
1.99
2.00
to
2.63
2.64
to
4.47
4.48
and
Over
11.5
14.6
20.2
33.9
0.23
0.44
0.81
1.16
1.82
3.32
4.70
6.00
7.24
8.44
9.60
10.7
11.8
12.9
15.0
16.9
18.9
20.7
22.5
25.9
29.1
32.1
34.2
37.5
40.6
43.4
45.8
870
1160
1750
3450
10
20
40
60
100
200
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
2400
2800
3200
3500
4000
4500
5000
5500
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.07
0.10
0.14
0.28
0.00
0.00
0.00
0.00
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.07
0.07
0.08
0.10
0.12
0.13
0.15
0.16
0.20
0.23
0.26
0.29
0.33
0.37
0.41
0.45
0.14
0.19
0.29
0.57
0.00
0.00
0.01
0.01
0.02
0.03
0.05
0.07
0.08
0.10
0.12
0.13
0.15
0.16
0.20
0.23
0.26
0.30
0.33
0.39
0.46
0.53
0.58
0.66
0.74
0.82
0.90
0.21
0.29
0.43
0.85
0.00
0.00
0.01
0.01
0.02
0.05
0.07
0.10
0.12
0.15
0.17
0.20
0.22
0.25
0.30
0.35
0.39
0.44
0.49
0.59
0.69
0.79
0.86
0.99
1.11
1.23
1.36
0.29
0.38
0.58
1.13
0.00
0.01
0.01
0.02
0.03
0.07
0.10
0.13
0.16
0.20
0.23
0.26
0.30
0.33
0.39
0.46
0.53
0.59
0.66
0.79
0.92
1.05
1.15
1.32
1.48
1.64
1.81
0.36
0.48
0.72
1.42
0.00
0.01
0.02
0.02
0.04
0.08
0.12
0.16
0.21
0.25
0.29
0.33
0.37
0.41
0.49
0.58
0.66
0.74
0.82
0.99
1.15
1.32
1.44
1.64
1.85
2.05
2.26
0.43
0.57
0.86
1.70
0.00
0.01
0.02
0.03
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.39
0.44
0.49
0.59
0.69
0.79
0.89
0.99
1.18
1.38
1.58
1.73
1.97
2.22
2.47
2.71
0.50
0.67
1.01
1.99
0.01
0.01
0.02
0.03
0.06
0.12
0.17
0.23
0.29
0.35
0.40
0.46
0.52
0.58
0.69
0.81
0.92
1.04
1.15
1.38
1.61
1.84
2.01
2.30
2.59
2.88
3.16
0.57
0.76
1.15
2.27
0.01
0.01
0.03
0.04
0.07
0.13
0.20
0.26
0.33
0.39
0.46
0.53
0.59
0.66
0.79
0.92
1.05
1.18
1.32
1.58
1.84
2.10
2.30
2.63
2.96
3.29
3.62
0.64
0.86
1.29
2.55
0.01
0.01
0.03
0.04
0.07
0.15
0.22
0.30
0.37
0.44
0.52
0.59
0.67
0.74
0.89
1.04
1.18
1.33
1.48
1.78
2.07
2.37
2.59
2.96
3.33
3.70
4.07
RPM
OF
FASTER
SHAFT
22
25
28
30
32
34
36
38
40
42
2.206
2.506
2.807
3.008
3.208
3.409
3.609
3.810
4.010
870
1160
1750
3450
10
20
40
60
100
200
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
2400
2800
3200
3500
4000
4500
5000
5500
5.49
6.92
9.57
16.00
0.12
0.22
0.40
0.57
0.89
1.61
2.28
2.90
3.49
4.05
4.60
5.13
5.65
6.15
7.11
8.04
8.93
9.79
10.60
12.20
13.70
15.10
16.10
17.8
19.3
20.7
22.1
6.43
8.12
11.3
18.9
0.13
0.25
0.46
0.66
1.03
1.88
2.65
3.38
4.07
4.74
5.38
6.01
6.61
7.20
8.35
9.44
10.5
11.5
12.5
14.4
16.2
17.9
19.1
21.0
22.8
24.5
26.1
7.36
9.30
12.9
21.7
0.15
0.28
0.53
0.75
1.18
2.14
3.02
3.86
4.65
5.42
6.15
6.87
7.57
8.25
9.56
10.8
12.0
13.2
14.3
16.5
18.6
20.5
21.9
24.2
26.2
28.2
30.0
7.97
10.1
14.0
23.5
0.16
0.31
0.57
0.81
1.27
2.31
3.27
4.17
5.03
5.86
6.66
7.44
8.19
8.93
10.4
11.7
13.0
14.3
15.6
17.9
20.2
22.3
23.8
26.2
28.4
30.6
32.5
8.57
10.8
15.1
25.3
0.18
0.33
0.61
0.87
1.36
2.48
3.51
4.48
5.41
6.30
7.16
8.00
8.81
9.61
11.1
12.6
14.0
15.4
16.7
19.3
21.7
24.0
25.6
28.2
30.6
32.8
34.9
9.17
11.6
16.1
27.1
0.19
0.35
0.65
0.93
1.45
2.65
3.75
4.79
5.78
6.74
7.66
8.55
9.43
10.3
11.9
13.5
15.0
16.5
17.9
20.6
23.2
25.7
27.4
30.1
32.7
35.1
37.3
9.76
12.3
17.2
28.8
0.20
0.37
0.69
0.99
1.54
2.82
3.99
5.10
6.15
7.17
8.15
9.10
10.0
10.9
12.7
14.4
16.0
17.6
19.1
22.0
24.7
27.3
29.2
32.1
34.7
37.2
39.5
10.3
13.1
18.2
30.6
0.21
0.39
0.73
1.04
1.64
2.99
4.23
5.40
6.52
7.60
8.64
9.65
10.6
11.6
13.5
15.2
17.0
18.6
20.2
23.3
26.2
28.9
30.9
33.9
36.8
39.3
41.7
10.9
13.8
19.2
32.2
0.22
0.42
0.77
1.10
1.73
3.15
4.46
5.70
6.88
8.02
9.12
10.2
11.2
12.2
14.2
16.1
17.9
19.7
21.4
24.6
27.7
30.5
32.6
35.8
38.7
41.4
43.8
Use this sprocket combination only is required to obtain speed ratio or to meet diameter limitations.. See Engineering Section II-5 for additional details.
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
8M-352
8M-416
8M-456
8M-480
8M-544
8M-608
44
52
57
60
68
76
0.65
0.70
0.73
0.74
0.78
0.81
R
95
4.211
RPM
OF
FASTER
SHAFT
1.00
to
1.04
1.05
to
1.11
1.12
to
1.19
1.20
to
1.30
1.31
to
1.45
1.46
to
1.65
1.66
to
1.99
2.00
to
2.63
2.64
to
4.47
4.48
and
Over
19.7
24.9
34.7
58.1
0.40
0.75
1.39
1.99
3.11
5.69
8.05
10.3
12.4
14.5
16.5
18.4
20.3
22.1
25.6
29.0
32.3
35.5
38.5
44.4
49.9
55.0
58.7
64.4
69.6
74.3
78.6
870
1160
1750
3450
10
20
40
60
100
200
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
2400
2800
3200
3500
4000
4500
5000
5500
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.12
0.16
0.25
0.49
0.00
0.00
0.01
0.01
0.01
0.03
0.04
0.06
0.07
0.08
0.10
0.11
0.13
0.14
0.17
0.20
0.23
0.25
0.28
0.34
0.39
0.45
0.49
0.56
0.63
0.70
0.77
0.25
0.33
0.49
0.97
0.00
0.01
0.01
0.02
0.03
0.06
0.08
0.11
0.14
0.17
0.20
0.23
0.25
0.28
0.34
0.39
0.45
0.51
0.56
0.68
0.79
0.90
0.99
1.13
1.27
1.41
1.55
0.37
0.49
0.74
1.46
0.00
0.01
0.02
0.03
0.04
0.08
0.13
0.17
0.21
0.25
0.30
0.34
0.38
0.42
0.51
0.59
0.68
0.76
0.85
1.01
1.18
1.35
1.48
1.69
1.90
2.11
2.33
0.49
0.65
0.99
1.94
0.01
0.01
0.02
0.03
0.06
0.11
0.17
0.23
0.28
0.34
0.39
0.45
0.51
0.56
0.68
0.79
0.90
1.01
1.13
1.35
1.58
1.80
1.97
2.25
2.54
2.82
3.10
0.61
0.82
1.23
2.43
0.01
0.01
0.03
0.04
0.07
0.14
0.21
0.28
0.35
0.42
0.49
0.56
0.63
0.70
0.85
0.99
1.13
1.27
1.41
1.69
1.97
2.25
2.47
2.82
3.17
3.52
3.87
0.74
0.98
1.48
2.92
0.01
0.02
0.03
0.05
0.08
0.17
0.25
0.34
0.42
0.51
0.59
0.68
0.76
0.85
1.01
1.18
1.35
1.52
1.69
2.03
2.37
2.71
2.96
3.38
3.80
4.23
4.65
0.86
1.14
1.73
3.40
0.01
0.02
0.04
0.06
0.10
0.20
0.30
0.39
0.49
0.59
0.69
0.79
0.89
0.99
1.18
1.38
1.58
1.78
1.97
2.37
2.76
3.16
3.45
3.95
4.44
4.93
5.43
0.98
1.31
1.97
3.89
0.01
0.02
0.05
0.07
0.11
0.23
0.34
0.45
0.56
0.68
0.79
0.90
1.01
1.13
1.35
1.58
1.80
2.03
2.25
2.71
3.16
3.61
3.95
4.51
5.07
5.64
6.20
1.10
1.47
2.22
4.38
0.01
0.03
0.05
0.08
0.13
0.25
0.38
0.51
0.63
0.76
0.89
1.01
1.14
1.27
1.52
1.78
2.03
2.28
2.54
3.04
3.55
4.06
4.44
5.07
5.71
6.34
6.97
RPM
OF
FASTER
SHAFT
22
25
28
30
32
34
36
38
40
42
2.206
2.506
2.807
3.008
3.208
3.409
3.609
3.810
4.010
870
1160
1750
3450
10
20
40
60
100
200
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
2400
2800
3200
3500
4000
4500
5000
5500
9.42
11.9
16.4
27.4
0.20
0.37
0.69
0.98
1.53
2.77
3.90
4.97
5.98
6.95
7.89
8.80
9.68
10.5
12.2
13.8
15.3
16.8
18.2
20.9
23.5
25.9
27.7
30.5
33.1
35.5
37.8
11.0
13.9
19.3
32.4
0.23
0.43
0.79
1.13
1.77
3.22
4.55
5.80
6.98
8.13
9.23
10.3
11.3
12.4
14.3
16.2
18.0
19.7
21.4
24.7
27.7
30.6
32.7
36.0
39.1
42.0
44.8
12.6
15.9
22.1
37.2
0.26
0.49
0.90
1.29
2.01
3.67
5.18
6.61
7.98
9.28
10.5
11.8
13.0
14.1
16.4
18.5
20.6
22.6
24.6
28.3
31.9
35.2
37.6
41.4
45.0
48.3
51.5
13.7
17.3
24.0
40.4
0.28
0.52
0.97
1.39
2.18
3.96
5.61
7.15
8.63
10.0
11.4
12.8
14.0
15.3
17.8
20.1
22.4
24.6
26.7
30.7
34.6
38.2
40.8
44.9
48.8
52.4
55.7
14.7
18.6
25.8
43.4
0.30
0.56
1.04
1.49
2.33
4.25
6.02
7.68
9.27
10.8
12.3
13.7
15.1
16.5
19.1
21.6
24.1
26.4
28.7
33.1
37.2
41.1
43.9
48.3
52.5
56.3
59.9
15.7
19.9
27.7
46.5
0.32
0.60
1.11
1.59
2.49
4.55
6.43
8.21
9.91
11.5
13.1
14.7
16.2
17.6
20.4
23.1
25.8
28.3
30.7
35.4
39.8
44.0
47.0
51.7
56.1
60.1
63.9
16.7
21.2
29.4
49.5
0.34
0.64
1.18
1.69
2.65
4.83
6.84
8.74
10.5
12.3
14.0
15.6
17.2
18.8
21.8
24.6
27.4
30.1
32.7
37.7
42.4
46.8
50.0
55.0
59.6
63.8
67.7
17.7
22.4
31.2
52.4
0.36
0.67
1.25
1.79
2.80
5.12
7.25
9.26
11.2
13.0
14.8
16.5
18.2
19.9
23.1
26.1
29.1
31.9
34.7
40.0
44.9
49.6
52.9
58.2
63.0
67.4
71.5
18.7
23.7
33.0
55.2
0.38
0.71
1.32
1.89
2.96
5.40
7.65
9.77
11.8
13.7
15.6
17.5
19.3
21.0
24.4
27.6
30.7
33.7
36.6
42.2
47.4
52.3
55.8
61.3
66.3
70.9
75.1
Use this sprocket combination only is required to obtain speed ratio or to meet diameter limitations.. See Engineering Section II-5 for additional details.
Pitch/Length
Designation
No. of
Teeth
Correction
Factor
8M-352
8M-416
8M-456
8M-480
8M-544
8M-608
44
52
57
60
68
76
0.65
0.70
0.73
0.74
0.78
0.81
96
R
ENGINEERING DATA
Section I
Application Design Considerations
When designing synchronous drives, there are several special circumstances that may require additional consideration:
1. Gear Motors/ Speed Reducer Drives
2. Electric Motor Frame Dimensions
3. Minimum Sprocket Diameter Recommendations
for Electric Motors
Figure 3 - Overhung Load
Overhung load calculations are generally assumed to apply
to the slower output shaft of a speed reducer. It is important to note that these calculations apply to higher speed
input shafts as well.
4. High-Driven Inertia
5. Air Moving Drives
6. Linear Motion Drives
7. High Performance Applications
8. Belt Drive Registration
9. Belt Drive Noise
10. Use of Flanged Sprockets
11. Fixed (Nonadjustable) Center Distance
12. Use of Idlers
13. Minimum Belt Wrap and Tooth Engagement
14. Adverse Operating Environments
Each of these circumstances and special considerations are
reviewed below.
1. Gear Motors/ Speed Reducer Drives
When designing a belt drive system to transfer power from
the output shaft of a speed reducer to the final driven shaft,
the designer must make certain that the belt drive does not
exert shaft loads greater than the speed reducing device is
rated to carry. Failure to do so can result in premature
shaft/ bearing failures whether the belt drive has been
designed with the appropriate power capacity or not.
This concept is similar to the National Electric Motor
Association (NEMA) establishing minimum acceptable
sprocket diameters for each of their standardized motor
frames. Abiding by these minimum recommended diameters, when designing a belt drive system, prevents the
motor bearings from failing prematurely due to excessive
shaft loads exerted by the belt drive.
Overhung load is generally defined as a force exerted by a
belt or chain drive, that is perpendicular to a speed reducer
shaft, and applied beyond its outermost bearing. Calculated
overhung load values are intended to serve as an indication
of how heavily loaded the shaft and outermost bearing of a
speed reducer actually is.
Most speed reducer manufacturers publish allowable overhung load values for every model in their product line. This
value represents the maximum load that the shaft and bearings can support without negatively impacting the durability
of the speed reducer. When the actual overhung load
exceeds the published allowable value, premature shaft or
bearing failure may occur. In extreme cases, catastrophic
failures can occur.
A general formula used to calculate overhung load (OHL) is
as follows:
OHL = 126,000 x HP x kLCF x KSF x KLLF
PD X RPM
Where: HP = Actual horsepower being transmitted at the
gear motor/reducer output shaft with no service factor applied
KLCF = Overhung load connection factor (1.3 for all
synchronous belt drives)
KSF = Service factor for the speed reducer (available from the manufacturer)
KLLF = Load location factor for the speed reducer
(available from the manufacturer)
PD = Pitch diameter of the speed reducer output
shaft sprocket
RPM = RPM of the speed reducer output shaft
Speed reducer manufacturers each publish their own specific formula and constants to calculate overhung load. They
also publish specific overhung load ratings for each speed
reducer product that they produce. It is very important to
use the correct overhung load calculation procedure in conjunction with the manufacturer’s accompanying overhung
load rating.
The Driving Force in Power Transmission
97
If the calculated overhung load for a particular belt drive
system does exceed the speed reducer manufacturer’s
maximum recommended value, consider altering the belt
drive design. In order to reduce the calculated overhung
load, consider:
Shaft
Length
Min.
Shaft
Dia.
• Increasing sprocket diameters
• Reducing belt width
• Mounting the sprocket closer to the speed reducer
outboard bearing
Increasing the sprocket diameter not only reduces calculated overhung load, it also potentially reduces the required
belt width. Reducing the belt width and mounting the
sprocket as close as possible to the outermost bearing of
the speed reducer both move the center of the belt load
closer to the speed reducer. This also reduces the calculated overhung load. Alterations to the belt drive design
should be made until the calculated overhung load is within
the speed reducer manufacturer’s recommendations.
2. Electric Motor Frame Dimensions
Motor dimensions can be important considerations depending on the application and its requirements. If motor shaft
length, motor shaft diameter, or clearance issues are a concern, refer to the motor dimension table on this page. The
table lists common general purpose electric motors by
frame size.
98
Motor Frame Dimensions
Frame
Size
Shaft Dia. (in)
Shaft Length
Min. (in)
Key (in)
48
56
1/2
5/8
—
—
3/64 Flat
3/16 x 3/16 x 1-3/8
143T
145T
7/8
7/8
2
2
3/16 x 3/16 x 1-3/8
3/16 x 3/16 x 1-3/8
182
182T
184
184T
7/8
1-1/8
7/8
1-1/8
2
2-1/2
2
2-1/2
3/16 x 3/16 x 1-3/8
1/4 x 1/4 x 1-3/4
3/16 x 3/16 x 1-3/8
1/4 x 1/4 x 1-3/4
213
213T
215
215T
1-1/8
1-3/8
1-1/8
1-3/8
2-3/4
3-1/8
2-3/4
3-1/8
1/4 x 1/4 x 2
5/16 x 5/16 x 2-3/8
1/4 x 1/4 x 2
5/16 x 5/16 x 2-3/8
254U
254T
256U
256T
1-3/8
1-5/8
1-3/8
1-5/8
3-1/2
3-3/4
3-1/2
3-3/4
5/16 x 5/16 x 2-3/4
3/8 x 3/8 x 2-7/8
5/16 x 5/16 x 3-3/4
3/8 x 3/8 x 2-7/8
284U
284T
284TS
286U
286T
286TS
1-5/8
1-7/8
1-5/8
1-5/8
1-7/8
1-5/8
4-5/8
4-3/8
3
4-5/8
4-3/8
3
3/8
1/2
3/8
3/8
1/2
3/8
x
x
x
x
x
x
3/8
1/2
3/8
3/8
1/2
3/8
x
x
x
x
x
x
3-3/4
3-1/4
1-7/8
3-3/4
3-1/4
1-7/8
324U
324T
324TS
326U
326T
326TS
1-7/8
2-1/8
1-7/8
1-7/8
2-1/8
1-7/8
5-3/8
5
3-1/2
5-3/8
5
3-1/2
1/2
1/2
1/2
1/2
1/2
1/2
x
x
x
x
x
x
1/2
1/2
1/2
1/2
1/2
1/2
x
x
x
x
x
x
4-1/4
3-7/8
2
4-1/4
3-7/8
2
364U
364US
364T
364TS
365U
365US
365T
365TS
2-1/8
1-7/8
2-3/8
1-7/8
2-1/8
1-7/8
2-3/8
1-7/8
6-1/8
3-1/2
5-5/8
3-1/2
6-1/8
3-1/2
5-5/8
3-1/2
1/2
1/2
5/8
1/2
1/2
1/2
5/8
1/2
x 1/2 x 5
x1/2 x 2
x 5/8 x 4-1/4
x 1/2 x 2
x 1/2 x 5
x 1/2 x 2
x 5/8 x 4-1/4
x 1/2 x 2
404U
404US
404T
404TS
405U
405US
405T
405TS
2-3/8
2-1/8
2-7/8
2-1/8
2-3/8
2-1/8
2-7/8
2-1/8
6-7/8
4
7
4
6-7/8
4
7
4
5/8
1/2
3/4
1/2
5/8
1/2
3/4
1/2
x
x
x
x
x
x
x
x
5/8 x 5-1/2
4 x 2-3/4
3/4 x 5-5/8
1/2 x 2-3/4
5/8 x 5-1/2
1/2 x 2-3/4
3/4 x 5-5/8
1/2 x 2-3/4
444U
444US
444T
444TS
445U
445US
445T
445TS
447T
447TS
449T
449TS
2-7/8
2-1/8
3-3/8
2-3/8
2-7/8
2-1/8
3-3/8
2-3/8
3-3/8
2-3/8
3-3/8
2-3/8
8-3/8
4
8-1/4
4-1/2
8-3/8
4
8-1/4
4-1/2
8-1/4
4-1/2
8-1/4
4-1/2
3/4
1/2
7/8
5/8
3/4
1/2
7/8
5/8
7/8
5/8
7/8
5/8
x
x
x
x
x
x
x
x
x
x
x
x
3/4
1/2
7/8
5/8
3/4
1/2
7/8
5/8
7/8
5/8
7/8
5/8
x
x
x
x
x
x
x
x
x
x
x
x
7
2-3/4
6-7/8
3
7
2-3/4
6-7/8
3
6-7/8
3
6-7/8
3
3. Minimum Sprocket Diameter
Recommendations for Electric Motors
Minimum Recommended Sprocket / Sheave Diameters
NEMA (The National Electric Manufacturers Association)
publishes recommendations for the minimum diameter of
sprockets and sheaves to be used on General Purpose
Electric Motors. The purpose of these recommendations is
to prevent the use of excessively small sprockets or
sheaves. This can result in motor shaft or bearing damage
since belt pull increases as the diameter is reduced.
Table data has been compiled from NEMA Standard MG-114-42; 11/78, MG-1-14-43; 1/68, and a composite of electric
motor manufacturers data. Values are generally conservative, and specific motors may permit the use of a smaller
sprocket or sheave. Consult the motor manufacturer.
Motor Frames and Minimum Diameters
for 60 Cycle Electric Motors
Horsepower at Synchronous Speed (rpm) Synchronous
Belts
3600
1800
1200
900
Min.
(3450)
(1750)
(1160)
(870)
Pitch
Dia. (in)
Motor
Frame
Code
Shaft
Dia.
(in)
143T
145T
0.875
0.875
1-1/2
2—3
1
1-1/2— 2
3/4
1
1/2
3/4
2.0
2.2
182T
182T
1.125
1.125
3
5
3
—
1-1/2
—
1
—
2.2
2.4
184T
184T
184T
1.125
1.125
1.125
—
5
7-1/2
—
—
5
2
—
—
1-1/2
—
—
2.2
2.2
2.7
213T
1.375
7-1/2—10
7-1/2
3
2
2.7
215T
215T
1.375
1.375
10
15
—
10
5
—
3
—
2.7
3.4
254T
254T
1.625
1.625
15
20
—
15
7-1/2
—
5
—
3.4
4.0
256T
256T
1.625
1.625
20—25
—
—
20
10
—
7-1/2
—
4.0
4.0
284T
284T
1.875
1.875
—
—
—
25
15
—
10
—
4.0
4.0
286T
1.875
—
30
20
15
4.7
324T
2.125
—
40
25
20
5.4
236T
2.125
—
50
30
25
6.1
364T
364T
2.375
2.375
—
—
—
60
40
—
30
—
6.1
6.7
365T
365T
2.375
2.375
—
—
—
75
50
—
40
—
7.4
7.7
404T
404T
404T
2.875
2.875
2.875
—
—
—
—
—
100
60
—
—
—
50
—
7.2
7.6
7.7
405T
405T
405T
2.875
2.875
2.875
—
—
—
—
100
125
75
—
—
60
—
—
9.0
7.7
9.5
444T
444T
444T
444T
3.375
3.375
3.375
3.375
—
—
—
—
—
—
125
150
100
—
—
—
—
75
—
—
9.0
8.6
9.5
9.5
445T
445T
445T
445T
3.375
3.375
3.375
3.375
—
—
—
—
—
—
150
200
125
—
—
—
—
100
—
—
10.8
10.8
9.5
11.9
4. High-Driven Inertia
Many drives, such as piston compressors, punch presses
and crushers, depend on the driveN pulley acting as a flywheel. This flywheel effect, or WR2 is used to help moderate
or smooth out fluctuations in driven load and speed. Failure
to compensate for this during a redesign can result in premature damage to the prime mover or early belt failures.
This can be a consideration when replacing older belt drives
with new, higher capacity belts.
When replacing large pulleys or sheaves with sprockets, be
careful not to remove a designed-in flywheel effect. Ask
questions of the user to make sure there is not a concern
for a high WR2. If there is a concern, you may have to use a
wider sprocket, a larger diameter, or a special made-toorder sprocket designed with added weight and WR2.
Drives which have a high driveN inertia and are subjected
to high acceleration or emergency stop conditions require
additional design expertise. Contact Gates Power
Transmission Product Application for further engineering
assistance.
5. Air Moving Drives
HVAC Equipment Inspection
Many air handling drives have structures that are not particularly rigid, which can create belt tension and drive alignment problems resulting in unusual and premature belt
wear. Synchronous belts are sensitive to fluctuations in
center distance that can be caused by inadequate bracketry.
Under start up conditions, an AC motor can be required to
provide 150% to 200% of its rated capacity. Synchronous
belts cannot slip, and must transmit the higher start up
torque. Under these conditions, the drive center distance
may collapse if the structure is not sufficiently rigid.
With the drive shut off and safely locked out, a simple
method to use when inspecting potential drive conversions
is to grab the two belt spans and push them together while
observing the motor. If any significant relative change in
center distance or motor position is noticed, the drive’s
structural strength is most likely insufficient for a simple conversion. The structure would need to be reinforced to
obtain optimum performance from a synchronous belt drive.
The best conversion candidates have motors that are
mounted solidly on support bracketry that is part of the fan's
structural system. When possible, select synchronous
drives with diameters similar to existing V-belt sheave diameters. This will maintain similar belt pulls and loads on the
shafts and structure.
Air Handling Unit Start-Up Characteristics
Full Load Start Up
Start up loads can be a concern when evaluating potential
drives for conversion to synchronous belts. Synchronous
belts will transmit all of the start up torque, where V-belts
may slip if the load is excessive. Due to the inertia of the
fan, start up loads can potentially be 150% to 200% of the
normal operating load. It is important that the start up load
be considered by selecting appropriate service factors
when designing a belt drive system.
99
Controlled Start Up
An air handling drive with soft start or variable frequency
controller (AC Inverter) is ideal for conversion to synchronous belts. The fan will be ramped up to speed slowly, with
a corresponding increase in load as the speed increases.
Structural flexing is typically not a concern when designing
synchronous belt drives on systems using soft starts or variable frequency controllers.
Fan Speed
The volume of air being transmitted and the required horsepower are both sensitive to changes in the driveN fan
speed. If designing a synchronous belt drive for energy
savings, it is important that the synchronous belt drive be
designed to operate at the proper driveN fan speed. All
conversions from existing V-belt drives should have the synchronous belt drive speed ratio based on a measured
driveN shaft RPM, and not calculated from the theoretical Vbelt speed ratio. This measurement can be made by either
using a mechanical contact tachometer or a strobe
tachometer.
The horsepower requirement for fans varies with the cube
of the fan speed. A small change in the fan speed makes a
much larger difference in the actual horsepower and energy
required.
HP1/HP2 = (RPM1/RPM2)3
Where: HP1
HP2
RPM1
RPM2
=
=
=
=
Initial Horsepower
New Horsepower @ New Fan RPM
Initial Fan RPM
New Fan RPM
6. Linear Motion Drives
In linear motion drives, such as a rack and pinion application, the belt is not transmitting a load in the conventional
rotational manner. The two cut ends of the belt are connected to clamping fixtures and the belt travels back and
forth a specified distance while rotating over a sprocket.
Because of these characteristics, the drive design process
will typically not follow standard catalog design procedures.
The designer will most likely have available a maximum belt
load or pull which will need to be related to the belt's allowable working tension. Reasonably sized sprocket diameters
are still required to prevent excessive stress fatigue in the
belt. In these applications, the designer may either use
endless belts and cut them, or use standard long length
belting when available. Gates Power Transmission Product
Application may also be consulted for additional design
assistance.
7. High Performance Applications
For special high performance applications, such as motorcycles or race car and boat supercharger drives, the design
loads will typically exceed published data. Because of the
extremely high loads and speeds (as much as 500 HP and
belt speeds exceeding 10,000 fpm), it is necessary for the
designer to contact Gates Power Transmission Product
Application for additional assistance.
100
Although special considerations may be involved, it is
important to remember that reasonable drive recommendations can be provided to the designer in most cases.
8. Belt Drive Registration
The three primary factors contributing to belt drive registration (or positioning) errors are belt elongation, backlash, and
tooth deflection. When evaluating the potential registration
capabilities of a synchronous belt drive, the system must
first be determined to be either static or dynamic in terms of
its registration function and requirements.
Static Registration: A static registration system moves
from its initial static position to a secondary static position.
During the process the designer is concerned only with how
accurately and consistently the drive arrives at its secondary position. Potential registration errors that occur during
transport are not considered. Therefore, the primary factor
contributing to registration error in a static registration system is backlash. The effects of belt elongation and tooth
deflection do not have any influence on the registration
accuracy of this type of system.
Dynamic Registration: A dynamic registration system is
required to perform a registering function while in motion
with torque loads varying as the system operates. In this
case, the designer is concerned with the rotational position
of the drive sprockets with respect to each other at every
point in time. Therefore, belt elongation, backlash, and tooth
deflection will all contribute to registrational inaccuracies.
Further discussion about each of the factors contributing to
registration error is as follows:
Belt Elongation: Belt elongation, or stretch, occurs naturally when a belt is placed under tension. The total tension
exerted within a belt results from installation as well as
working loads. The amount of belt elongation is a function of
the belt tensile modulus, which is influenced by the type of
tensile cord and the belt construction. The standard tensile
cord used in rubber synchronous belts is fiberglass.
Fiberglass has a high tensile modulus, is dimensionally stable, and has excellent flex-fatigue characteristics. The standard tensile cord used in PolyChain GT2 belts is an aramid
type. The tensile modulus of this cord is considerably higher
than fiberglass cords, and also provides excellent flex
fatigue characteristics. When needed, belt tensile modulus
data is available from Gates Power Transmission Product
Application.
Backlash: Backlash in a synchronous belt drive results
from clearance between the belt teeth and the sprocket
grooves. This clearance is needed to allow the belt teeth to
enter and exit the grooves smoothly with a minimum of
interference. The amount of clearance necessary depends
upon the belt tooth profile. PowerGrip® Timing Belt Drives
are known for having relatively little backlash. PowerGrip®
HTD® Drives have improved torque carrying capability and
resist ratcheting, but have a significant amount of backlash.
Polychain GT2 Drives have considerably improved torque
carrying capability, and backlash characteristics in between
that of PowerGrip HTD and PowerGrip Timing Drives. In
special cases, alterations can be made to drive systems to
further decrease backlash. These alterations often result in
increased belt wear, increased drive noise and shorter drive
life. Contact Gates Power Transmission Product Application
for additional information.
Tooth Deflection: Tooth deformation in a synchronous belt
drive occurs as a torque load is applied to the system, and
individual belt teeth are loaded. The amount of belt tooth
deformation depends upon the amount of torque loading,
sprocket size, installation tension and belt type. Of the three
primary contributors to registration error, tooth deflection is
the most difficult to quantify. Experimentation with a prototype drive system is the best means of obtaining realistic
estimations of belt tooth deflection.
Additional guidelines that may be useful in designing registration critical drive systems are as follows:
•
•
•
•
Design with large sprockets with more teeth in mesh.
Keep belts tight, and control tension closely.
Design frame/shafting to be rigid under load.
Use high quality machined sprockets to minimize
radial run out and lateral wobble.
9. Belt Drive Noise
Field experience on actual applications verifies that some
positive belt drives can produce some noise. The noise levels produced are typically greater than V-belts, and are
associated with tooth meshing characteristics. For the most
part, this noise is low level and will not exceed the level of
noise produced by the equipment it is used on or the surrounding environment of the equipment. Laboratory studies
(confirmed by field studies), using highly instrumented
equipment, show a high probability for significant noise generation at speeds greater than 3,500 feet per minute and
belt widths in excess of 85mm.
1. On all two-sprocket drives, the minimum flanging
requirements are two flanges on one sprocket or one
flange on each sprocket on opposite sides.
2. On drives where the center distance is more than
eight times the diameter of the small sprocket, belt
tracking may be more difficult to control. Check to be
sure that the belt tracks completely on both sprockets. Special attention should be given to proper drive
alignment, and both sprockets may require flanging
on both sides. (See Engineering Section II-10, Drive
Alignment on Page 108.)
3. On vertical shaft drives, one sprocket should be
flanged on both sides, and all remaining sprockets in
the system may require flanging on the bottom side
only if the belt does not track correctly on the sprockets.
4. On drives with more than two sprockets, the
recommended flanging requirements are two
flanges on every other sprocket, or one flange on
every sprocket—on alternating sides.
On made-to-order sprockets, flanges must be securely fastened, such as using mechanical fasteners, welding, shrinkfit or other equivalent methods.
11. Fixed (Nonadjustable) Center Distance
Designers sometimes attempt to design synchronous belt
drive systems without any means of belt adjustment or take
up. This type of system is called a Fixed Center Drive.
While this approach is often viewed as being economical,
and is simple for assemblers, it often results in troublesome
reliability and performance problems in the long run.
Many times a belt drive system, when operating under load,
is not the primary cause for noise. Undersized, poorly lubricated, worn or misaligned bearings can cause significant
noise levels. Rotating parts of a total system can create air
disturbances, thus generating noise. A weak structural
design could flex under the load and cause misalignment
and affect components in the drive system, thereby creating
noise. Consideration should also be given to assuring that
the total system has not been designed to act as an echo
chamber, thus amplifying an otherwise insignificant noise.
The primary pitfall in a fixed center design approach is failure to consider the affects of system tolerance accumulation. Belts and sprockets are manufactured with industry
accepted production tolerances. There are limits to the
accuracy that the center distance can be maintained on a
production basis as well. The potential effects of this tolerance accumulation is as follows:
It becomes obvious there are many sources for noise in
most applications. The study and understanding of noise
analysis is a complex and controversial issue. It should be
apparent to the designer that noise problems require very
careful and thorough examinations. If belt drive noise is a
problem, contact Gates Power Transmission Product
Application for further assistance.
High Tension:
Short Belt with Large Sprockets on a Long Center Distance
10. Use of Flanged Sprockets
Guide flanges are needed in order to keep the belt on the
sprocket. Due to tracking characteristics, even on the best
aligned drives, belts will ride off the edge of the sprockets.
Flanges will prevent this belt ride-off.
On all drives using stock or made-to-order sprockets, the
following conditions should be considered when selecting
flanged sprockets:
Low Tension:
Long Belt with Small Sprockets on a Short Center Distance
Belt tension in these two cases can vary by a factor of 3 or
more with a fiberglass tensile cord, and even more with an
aramid tensile cord. This potential variation is great enough
to overload bearings and shafting, as well as the belts
themselves. The probability of these extremes occurring is a
matter of statistics, but however remote the chances seem,
they will occur in a production setting. In power transmission
drives, the appearance of either extreme is very likely to
impact drive system performance in a negative manner.
The most detrimental aspect of fixed center drives is generally the potentially high tension condition. This condition can
be avoided by adjusting the design center distance. A common approach in these designs is to reduce the center distance from the exact calculated value by some small fraction. This results in a drive system that is inherently loose,
101
but one that has much less probability of yielding excessively high shaft loads. NOTE: This approach should not be
used for power transmission drives since the potentially
loose operating conditions could result in accelerated wear
and belt ratcheting, even under nominal loading.
There are times when fixed center drive designs can’t be
avoided. In these cases, the following recommendations will
maximize the probability of success.
1. Do not use a fixed center design for power transmission drives. Consider using a fixed center design only
for lightly loaded or motion transfer applications.
2. Do not use a fixed center design for drives requiring
high motion quality or registration precision.
3. When considering a fixed center design, the center
distance must be held as accurately as possible, typically within 0.002”—0.003” (0.05mm—0.08mm). This
accuracy often requires the use of stamped steel
framework. Molding processes do not generally have
the capability of maintaining the necessary accuracy.
4. Sprockets for fixed center systems should be produced with a machining process for accuracy.
Molding and sintering processes are generally not
capable of holding the finished O.D. sufficiently accurate for these systems.
5. The performance capabilities of the drive system
should be verified by testing belts produced over their
full length tolerance range on drive systems representing the full potential center-distance variation.
Contact Gates Power Transmission Product
Application for further details.
6. Contact Gates Power Transmission Product
Application for design center distance recommendations, and to review the application.
12. Use of Idlers
Use of idlers should be restricted to those cases in which they
are functionally necessary. Idlers are often used as a means
of applying tension when the center distance is not adjustable.
Idler sizes smaller than this may result in excessive tensile
fatigue resulting in premature belt failures
Idler arc of contact should be held to a minimum. All idlers
should be rigidly mounted in place to minimize movement or
deflection during drive startup and operation.
In most cases, use of spring-loaded idlers is not recommended on positive belt applications. This stems from the
fact that a synchronous belt can generate sufficient tension
to overcome any reasonable force imposed by a springloaded idler (See Engineering Section II-14, Self Generated
Tension on Page 110). The belt may ratchet in this situation
because the idler has not maintained sufficient belt tension
on the slack side span. Any spring force sufficient to resist
being overcome by belt span tensions may be excessive
and could significantly reduce belt life. Exceptions include
lightly loaded applications.
13. Minimum Belt Wrap
and Tooth Engagement
Horsepower ratings listed in this catalog are based on a
minimum of six teeth in mesh between the belt and the
sprocket. The ratings must be corrected for excessive tooth
loading if there are less than six teeth in mesh. For nonstock drives not listed in the Drive Selection Tables, the
teeth in mesh may be calculated by using this formula:
Formula 9
8

D − d 
Ng
Teeth in Mesh = 0.5 − 
  Ng

 6C  
Where: D = pitch diameter, large sprocket, inches
d = pitch diameter, small sprocket, inches
C = center distance between shafts, inches
N
Ng
g = number of grooves in small sprocket
In cases where fewer than six teeth are in full contact, 20%
of the horsepower rating must be subtracted for each tooth
less than six not in full contact. After computing the teeth in
mesh, the belt rating should be multiplied by the appropriate
Ktm factor shown in the following table.
Teeth In Mesh Correction Factor
Idlers should be located on the slack side span of the belt
drive. For inside idlers, grooved sprockets are recommended up to 40 grooves. On larger diameters, flat uncrowned
idlers may be used. In some cases, such as high capacity
drives utilizing large sprockets, idlers as large as the smallest loaded sprocket in the system may be more appropriate.
Based upon both laboratory testing and field experience,
backside idler applications using PolyChain GT2 belts perform best with operating speeds up to 500 rpm. Higher
operating speeds may be considered, particularly with 8mm
pitch drive systems.
Backside idlers should be flat and uncrowned, and sized
as follows:
8mm Pitch: 3” O.D. Minimum
14mm Pitch: 6-1/2” O.D. Minimum
102
Teeth in Mesh
Factor Ktm
6 or more
5
4
3
2
1.00
0.80
0.60
0.40
0.20
In addition to the number of teeth in mesh, some drives with
more than two shafts may have a greater potential for the
belts to ratchet where loaded sprockets have 6 teeth in
mesh, but a small arc of contact. In order to minimize this
condition, each loaded sprocket in the drive system should
have an arc of contact or belt wrap angle of at least 60
degrees. Non-loaded idler sprockets do not have tooth
meshing or wrap angle requirements.
14. Adverse Operating Environments
Section II
Debris
Be very careful when using synchronous drives in high
debris environments. Debris can be more damaging to the
positive belt drive than a V-belt drive, which has a tendency
to remove debris from the sheave grooves through drive
operation. Entrapment of debris in synchronous drives is a
major concern. Debris can be packed into sprocket grooves
causing improper belt tooth engagement, reducing belt life
and accelerating belt and sprocket wear. Care must be
taken to provide adequate shielding to drives in environments where debris is likely. Completely enclosing a synchronous belt drive may be acceptable. Since synchronous
belts generate minimal heat during drive operation, air circulation is not critical except where extremely high temperatures already are present. Depending on the type and abrasive characteristics of the debris, excessive wear can be
generated on both belt and sprockets.
Engineering Design Considerations
All synchronous belt drives require proper installation procedures for optimum performance. In addition, topics such as
tooth profile advantages, sprocket rim speed limitations, efficiency, and tolerances are common to all Gates synchronous belt drives.
1. Belt Storage and Handling
2. Center Distance and Belt Length
3. Tooth Profiles
4. Static Conductivity
5. Sprocket Diameter - Speed
6. Efficiency
Temperature
Belt performance is generally unaffected in ambient temperature environments between -65° and 185°F (-54° and
85°C). Temperature extremes beyond these limits should be
reviewed by Gates Power Transmission Product Application.
7. Belt Tolerances
Chemical Resistance
Based on lab and field testing, PolyChain GT2 belts provide
excellent resistance to most chemicals, including some
acids, alkalis and petroleum distillates. Actual performance
characteristics will be determined by the degree of concentration of the chemical, the time of exposure and the type of
exposure (drip, splash, immersion, etc.). In addition to possible belt degradation, these chemicals can act as a lubricant in the drive system. As with any positive belt drive,
PolyChain GT2 drives which run where excessive lubrication is present have an increased tendency to ratchet (See
Engineering Section II-14, Self Generated Tension on Page
110). Special attention should be given to assure that recommended tension is maintained (See Engineering Section
II-8, Belt Installation Tension on Page 106).
10. Drive Alignment
High Humidity
Many industrial applications face the problems of rusting
parts. This is equally true of sprockets when used in very
wet or humid environments, such as seen with air moving
drives on cooling towers or wood kilns. The constant effects
of the wet air surrounding the belt drive can cause excessive rust, which in the most severe cases may lead to premature wear.
In these instances the designer may elect to use special
stainless steel sprockets or a more economical choice such
as nickel coating. A 0.001" thick coating of electroless nickel
can, in many instances, dramatically slow down the effects
of rusting.
8. Belt Installation Tension
9. Center Distance Allowances for Installation
and Tensioning
11. Belt Installation
12. Belt Pull Calculations
13. Bearing/Shaft Load Calculations
14. Self-Generated Tension
Each of these circumstances and special considerations are
reviewed below.
1. Belt Storage and Handling
Synchronous belts should be protected from moisture, temperature extremes, direct sunlight and high ozone environments. Each belt should be stored in its original package,
avoiding any sharp bends or crimping which will cause damage. When properly stored, Gates synchronous belts should
easily meet the criteria covered in RMA Bulletin IP-3-4
(eight years’ storage with no reduced performance).
2. Center Distance and Belt Length
The approximate relationship between a center distance and
belt pitch length is given by the following formula:
Formula 6
9
(D − d)2
4C
Where: LLpp== belt pitch length, inches
D = diameter of large sprocket, inches
d = diameter of small sprocket, inches
C = center distance, inches
LLp p= 2C + 1.57(D + d) +
103
A more precise formula is given below:
Formula10
7
Formula
π ( D + d)
π ϕ ( D − d)
+
2
180
Where:
Lp== belt pitch length, inches
Where: Lp
C = center distance, inches
D = pitch diameter of large sprocket, inches
d = pitch diameter of small sprocket, inches
Lpp= 2C Cos ϕ +
D − d
ϕ = sin 
 degrees
 2C 
The approximate center distance can be found by this
formula:
−1
Formula11
8
Formula
C=
K +

√
K2 − 32 (D − d)
2
16
Where:
Where: K = 4LLpp–
= 6.28 (D + d)
The exact center distance can be calculated using an iterative process between the center distance (Formula 11) and
belt length (Formula 10) equations. The exact center distance has been found when the two equations converge.
The pitch length increment of a synchronous belt is equal to
a multiple of the belt pitch.
3. Tooth Profiles
Conventional trapezoidal belts (MXL, XL, etc.) were the earliest developments of positive drive belts. In more recent
years, new curvilinear profiles have entered the market.
The most predominant of these profiles is the HTD® system
(5mm, 8mm, etc.). While these curvilinear profiles provide
many advantages, they also can provide significant disadvantages.
R
With the development of the new Gates GT® tooth profile,
the combined advantages of the various curvilinear profiles
have now been optimized. Characteristics such as ratcheting resistance, improved load/life and noise reduction were
prime factors in the design of the Gates GT® profile.
Additionally, it allowed optimization in incorporating premium
materials into its superior construction.
Figure 4
4. Static Conductivity
All belts, whether made from rubber or urethane, naturally
build up an electric charge while in operation. While the likelihood that an electrical discharge from a belt could actually
cause a detonation continues to be a point of speculation,
lower humidity levels around 15% are known to result in significantly stronger electrical charges than higher humidity
levels around 60% or more. Thus, greater precautions
should be taken for belt drive systems operating in low
humidity, or dry, environments.
Power transmission belts produced in a conductive construction have traditionally been considered to be relatively
safe for explosive environments. Conductive belts continuously dissipate their electrical charge into the ferrous
sprockets or sheaves on which they operate. The test procedure described in RMA Bulletin IP-3-3/1995 provides a
measurable standard of belt conductivity to ensure that
electrical charges from power transmission belts are safely
dissipated into the belt drive hardware. It is important to
note that this test procedure applies only to new belts.
PolyChain GT2 belts do not meet the static conductivity
requirements specified in RMA Bulletin IP-3-3/1995. This is
also true for most rubber synchronous drive belts unless
specially ordered from the manufacturer to meet this
requirement. Though rubber power transmission belts can
be produced in a conductive construction, it is important to
understand that belt conductivity properties are known to
decay over time with belt usage. In addition, power transmission belts that do not meet the RMA IP-3-3 standard are
widely available. A conductive power transmission belt used
in an explosive environment could inadvertently be replaced
with an unsafe belt, creating a potential safety hazard.
Testing confirms that under normal dynamic operating conditions, PolyChain GT2 belts generate a minimal static
charge. The user must ensure that belt drives operating in
potentially hazardous or explosive environments are
designed and installed in accordance with existing building
codes, OSHA requirements, and/or recognized
safety-related organizations.
The GT® tooth profile is based on the tractix mathematical
function. Engineering handbooks describe this function as a
“frictionless” system. This early development by Schiele is
described as an involute form of a catenary. With this system,
the belt and sprocket teeth move substantially tangentially
during entry and exit, thus improving significantly the belts’
performance characteristics. This is illustrated in Figure 4.
104
Even properly lubricated chains running at higher speeds
tend to throw off the oil due to centrifugal forces, making it
difficult to maintain proper lubrication at the load bearing
surfaces. Consequently, chain drives are typically only 9298% efficient.
5. Sprocket Diameter—Speed
Speed losses result from belt slip and creep. Unlike V-belts,
slip is not a factor with synchronous belts. Well maintained
V-belt drives are typically in the range of 95-98% efficient.
However, on a poorly designed or maintained drive, the efficiency may drop as much as 5% or more. If proper maintenance cannot be scheduled for a V-belt drive or it is located
in an inaccessible area, a positive belt drive system should
be considered.
Drives shaded in the Belt Width Selection Tables on pages
62 through 65, and pages 94 through 96 use sprocket diameters that may reduce belt life. The amount of reduction will
depend on speed—the higher the speed, the greater the
reduction. The drives are included for use where speed ratio
or space requirements must be met. Blanks in the lower
right-hand portions of the Belt Width Selection Tables occur
because sprocket rim speed exceeds 6,500 feet per minute.
Centrifugal forces developed beyond this speed may prohibit the use of stock gray cast iron sprockets. For rim speeds
above 6,500 feet per minute, contact Gates Power
Transmission Product Application for other alternatives.
6. Efficiency
When properly designed and applied, PolyChain GT2 belt
drive efficiency will be as high as 98%. This high efficiency
is primarily due to the positive, no slip characteristic of synchronous belts. Since the belt has a thin profile, it flexes
easily, thus resulting in low hysteresis losses as evidenced
by low heat buildup in the belt.
The belt drive is only part of the total system. Motors should
be properly sized for the application. They must have sufficient capacity to meet the power needs, yet over-designed
motors will lead to electrical inefficiencies. DriveN machines
also may have inherent inefficiencies which may contribute
to overall system efficiency.
Gates synchronous belts are uniquely constructed because
they use high performance materials. Optimization of these
high-technology features provide maximum performance
and efficiency.
Synchronous belt drive efficiency can be simply defined as
shown in the following equation:
Efficiency, percent =
DN RPM × DN Torque
× 100
DR RPM × DR Torque
When examining the loss of energy, it is necessary to consider belt losses in terms of shaft torque and shaft speed.
Torque losses result from bending stress and friction.
Chain drives running unlubricated may generate significant
heat build up due to increased friction in the roller joints.
R
105
7. Belt Tolerances
Stock
BeltBelt
Center
Distance
Tolerances
Stock
Width
Tolerances
These tolerances are for reference only. For fixed center
drive applications and special tolerances, contact Gates
Power Transmission Product Application.
Stock
BeltCenter
Center Distance
Distance Tolerances
Stock
Belt
Tolerances
(mm)
(in)
Belt Length
Center Distance
Tolerance
(mm)
(in)
Belt
Pitch
8mm
Standard (mm)
Belt Width (in)
12
0.47
±
0.61
.024
21
.083
±
0.63
.025
36
1.42
±
1.08
0.43
62
2.44
±
1.86
0.73
over
127
5
to
254
10
±
0.20
.008
over
254
10
to
381
15
±
0.23
.009
over
381
15
to
508
20
±
0.25
.010
20
0.79
±
0.060
0.024
over
508
20
to
762
30
±
0.30
.012
37
1.46
±
1.11
0.044
over
762
30
to
1016
40
±
0.33
.013
±
to
1270
50
±
0.38
.015
2.04
0.080
over
1016
40
68
2.68
90
3.54
±
2.70
0.106
125
4.92
±
3.75
0.148
1270
over
50
1524
to
60
14mm
0.41
±
.016
over
1524
60
to
1778
70
±
0.43
.017
over
1778
70
to
2032
80
±
0.46
.018
2032
over
80
2286
to
90
8. Belt Installation Tension
0.49
±
.019
over
2286
90
to
2540
100
±
0.52
.020
over
2540
100
to
2794
110
±
0.54
.021
over
2794
110
to
3048
120
±
0.56
.022
over
3048
120
to
3302
130
±
0.58
.023
over
3302
130
to
3556
140
±
0.60
.024
over
3556
140
to
3810
150
±
0.63
.025
over
3810
150
to
4064
160
±
0.66
.026
over
4064
160
to
4318
170
±
0.69
.027
over
4318
170
to
4572
180
±
0.72
.028
over
4572
180
add ±
every
Standard Belt Tensioning Procedure
When installing a Gates PolyChain GT2 belt:
A. Be sure it is tensioned adequately to prevent tooth
jumping (ratcheting) under the most severe load conditions which the drive will encounter during operation.
B. Avoid extremely high tension which can reduce belt
life and possibly damage bearings, shafts and other
drive components.
When you wish to use a numerical method for calculating
recommended belt installation tension values, the following
procedure should be used:
Measure the force (lb) required to deflect one belt span a
given amount, as shown in the sketch below.
.03
for
.001
254
increment
10
Span L
ength
Force
106
Belt Width (mm)
Tolerances (in)
Deflection
1/64" per inch
of span
, t
t =

√
D −
2
C −
 2
STEP 1: Calculate the required base static
installation tension.
STEP 2: Calculate the minimum and maximum
recommended deflection forces.
Use Formula 12 to calculate the required base static
installation tension.
A.
A. Measure the span length of your drive (see sketch).
Span L
ength
Formula 12
Tst = 17.4DHP + mS2 , pounds
S
t =

√
D − d 2
2
C −

 2 
Where: C = center distance, inches
D = pitch diameter of large sprocket, inches
d = pitch diameter of small sprocket, inches
B.
B. Minimum recommended force =:
Table 10
8mm
, t
Force
Where: DHP = Design Horsepower
S = PD x RPM
3820
m = Value from Table 10
PD = Sprocket Pitch Diameter, inches
RPM = Sprocket Speed
Pitch
Deflection
1/64" per inch
of span
Formula
Formula133
Belt Width
m
Y
Minimum Tst
(lb) per span
12mm
0.33
43.83
28
21mm
0.57
76.70
49
36mm
0.97
131.49
84
62mm
1.68
226.45
145
deflection force, Min. =
t
1.4
1.2 Tst +  L  Y
 
16
, lbf
C.
C. Maximum recommended force =:
Formula
Formula144
14mm
20mm
0.92
134.57
119
37mm
1.69
248.95
220
68mm
3.11
457.52
405
90mm
4.12
605.55
536
125mm
5.72
841.04
744
Because of the high performance capabilities of PolyChain
GT2 belts, it is possible to design drives that have significantly greater load capacity than are necessary to carry the
actual design load. Consequently, Formula 12 can provide
Tst values less than are necessary for the belt to operate
properly, resulting in poor belt performance and reduced
service life.
If a more appropriately sized drive cannot be designed, minimum recommended Tst values are provided in Table 10 to
assure that the PolyChain GT2 belts are tensioned properly
when lightly loaded.
Always use the greater Tst value; i.e., from Tst Formula 12
or Table 10.
NOTE:
When applying static belt tension values directly, multiply
the required base static installation tension calculated in
Formula 12 by the following factors:
For New Belts:
Minimum Static Tension = Base Static Tension x 1.4
Maximum Static Tension = Base Static Tension x 1.5
For Used Belts:
Minimum Static Tension = Base Static Tension x 1.2
Maximum Static Tension = Base Static Tension x 1.3
deflection force, Max.
Min. =
Where:
Where: TT
stst=
t t=
LL=
Y=
Y
t
1.5
1.3 Tst +  L  Y
 
16
Base
Static
tension,
=
Static
tension,
lbf lb f
span
=
spanlength,
length,inches
inches
belt
=
beltpitch
pitchlength,
length,inches
inches
constant
=
constantfrom
fromTable
Table101
, lbf
NOTE: For initial belt installation of a new belt, a recommended tension
NOTE: For
re-installation
of a used
belt,
a recommended
of
should
be used
in calculating tension
the deflection
of 1.4
Tst to 1.5 Tst value
1⁄ inch
1.2
Tst Deflection
to 1.3 Tst isvalue
be used
in length
calculating
per inch
of span
or t⁄64 .the
forces.
64 should
deflection forces.
STEP 3: Applying the tension.
A. At the center of the span (t) apply a force perpendicular to the span large enough to deflect the belt on the
drive 1⁄64 inch per inch of span length from its normal
position. One sprocket should be free to rotate. Be
sure the force is applied evenly across the entire belt
width.
B. Compare this deflection force with the range of forces
calculated in Step 2.
1.
1. If it is less than the minimum recommended
deflection force, the belt should be tightened.
2. If it is greater than the maximum recommended deflection force, the belt should be
loosened.
9. Center Distance Allowances for
Installation and Tensioning
Since fixed center drives are not recommended, center distance allowances for a Gates PolyChain GT2 belt drive are
necessary to assure that the belt can be installed without
damage and then tensioned correctly. The standard installation allowance is the minimum decrease in center distance
required to install a belt when flanged sprockets are removed
107
R
R
from their shafts for belt installation. This is shown in the
first column of Table 11. This table also lists the minimum
increase in center distance required to assure that a belt
can be properly tensioned over its normal lifetime. If a belt
is to be installed over flanged sprockets without removing
them, the additional center distance allowance for installation shown in the second table below must be added to the
first table data.
Table 11
Center Distance Allowance For Installation and Tensioning
Belt Length
(mm)
(in)
Standard Installation Allowance Tensioning Allowance
(Flanged Sprockets
(mm) (All Drives)
(mm)
Removed For Installation) (in)
(in)
Up to 125
5
0.5
0.02
0.5
0.02
125
250
Over
to
5
10
0.8
0.03
0.8
0.03
Over
250
500
to
10
20
1.0
0.04
0.8
0.03
Over
500
1000
to
20
40
1.8
0.07
0.8
0.03
1000 1780
Over
to
40
70
2.8
0.10
0.8
0.04
1780 2540
Over
to
70
100
3.3
0.13
1.0
0.04
2540 3300
Over
to
100
130
4.1
0.16
1.3
0.05
3300 4600
Over
to
130
180
4.8
0.19
1.3
0.05
4600 6900
Over
to
180
270
5.6
1.3
0.22
0.05
Any degree of sprocket misalignment will result in some
reduction of belt life, which is not accounted for in the normal drive design procedure. Misalignment of all synchronous belt drives should not exceed 1/4° or 1/16" per foot of
linear distance. Misalignment should be checked with a
good straight edge tool. The tool should be applied from
driveR to driveN, and then from driveN to driveR so that the
total effect of parallel and angular misalignment is taken into
account.
PARALLEL MISALIGNMENT
CL
ANGULAR MISALIGNMENT
FLEETING ANGLE
CL
Figure
Fig. 15
Drive misalignment can also cause belt tracking problems.
However, light flange contact by the belt is normal and won’t
affect performance.
Additional Center Distance Allowance For Installation Over
Flanged Sprockets*
(Add to Installation Allowance In Table No. 11)
Pitch
One Sprocket (mm)
Flanged
(in)
Both Sprockets (mm)
Flanged
(in)
8mm
21.8
0.86
33.3
1.31
14mm
31.2
1.23
50.0
1.97
* For drives that require installation of the belt over one sprocket at a time, use the value
for “Both Sprockets Flanged”
10. Drive Alignment
Provision should be made for center distance adjustment,
according to the two tables on this page, or to change the
idler position so the belt can be slipped easily onto the
drive. When installing a belt, never force it over the flange.
This will cause internal damage to the belt tensile member.
Synchronous belts typically are made with high modulus
tensile members which provide length stability over the belt
life. Consequently, misalignment does not allow equal load
distribution across the entire belt top width. In a misaligned
drive, the load is being carried by only a small portion of the
belt top width, resulting in uneven belt wear and premature
tensile failure.
There are two types of misalignment: parallel and angular
(See Figure 1). Parallel misalignment is where the driveR
and driveN shafts are parallel, but the two sprockets lie in
different planes. When the two shafts are not parallel, the
108
drive is angularly misaligned.
A fleeting angle is the angle at which the belt enters and
exits the sprocket, and equals the sum of the parallel and
angular misalignments.
For those drives in which the center distance is greater than
eight times the small sprocket diameter, belt tracking can be
a problem. In these cases, the parallel position of the two
sprockets may need to be adjusted until only one flange
guides the belt in the system and the belt tracks fully on all
sprockets. Regardless of the drive center distance, the optimum drive performance will occur with the belt lightly contacting one flange in the system. The worst case is for the
belt to contact flanges on opposite sides of the system. This
traps the belt between opposite flanges and can force the
belt into undesirable parallel misalignment.
Improper installation of the bushing can result in the bushing / sprocket assembly being "cocked" on the shaft. This
leads to angular misalignment and sprocket wobble. Be
sure to follow the instructions provided with the bushings.
11. Belt Installation
During the belt installation process, it is very important
the belt be fully seated in the sprocket grooves before
applying final tension. Serpentine drives with multiple
sprockets and drives with large sprockets are particularly
vulnerable to belt tensioning problems resulting from the
belt teeth being only partially engaged in the sprockets during installation. In order to prevent these problems, the belt
installation tension should be evenly distributed to all belt
spans by rotating the system by hand. After confirming that
belt teeth are fully engaged in the sprocket grooves, belt
tension should be rechecked and verified. Failure to do this
may result in an undertensioned condition with the potential
for belt ratcheting.
12. Belt Pull Calculations
When the machine designer requests shaft load calculations
from the drive designer, the following procedure can be
applied:
C. Solution For Magnitude Only
If only the magnitude of belt pull is needed, follow the steps
below. Use this method for drives with two sprockets. Use
the graphical method shown if the drive uses idlers.
1. Add TT and TS
A. Calculate Belt Span Tensions
D-d
C for the drive,
find the vector sum correction factor using
Figure 3, where:
2. Using the value of
Belt pull is the vector sum of TT and TS, the tightside and
slackside tensions. TT and TS may be calculated using the
following formulas:
D = large diameter
d = small diameter
C = center distance
Formula 15
TT =
(144,067) DHP
(PD)(RPM)
Or, use the arc of contact on the small
sprocket if known.
3. Multiply the sum of TT plus TS by the vector
Formula 16
TS =
sum correction factor to find the vector
sum of TT plus TS.
(18,008) DHP
(PD)(RPM)
Where: DHP = Horsepower x Service Factor (hp)
PD = Sprocket Pitch Diameter (in)
RPM = Sprocket Speed (rev/min)
Parallel
TS
Parallel
B. Solution For Both Magnitude and Direction
Motor
If both direction and magnitude of belt pull are required, the
vector sum of TT and TS can be found by graphical vector
addition as shown in Figure 6. TT and TS vectors are drawn
to a convenient scale and parallel to the tightside and slackside, respectively. Figure 6 shows vector addition for belt
pull on the motor shaft. The same procedures can be used
for finding belt pull on the driveN shaft. This method may be
used for drives using three or more sprockets or idlers.
For two-sprocket drives, belt pull on the driveR and driveN
shafts is equal but opposite in direction . For drives using
idlers, both magnitude and direction may be different.
T
Parallel to T
Slackside
Figure 6
Vector Sum Correction Factor
9HFWRU6XP&RUUHFWLRQ)DFWRU
D-d
'G
C
& 1.4
1.2
1.0
0.8
1.6
0.6
0.4
0.2
0
1
Vector9HFWRU6XP&RUUHFWLRQ)DFWRU
Sum Correction Factor
The vector sum of TT and TS can be found so that the direction of belt pull, as well as magnitude, is known. This is necessary if belt pull is to be vectorially added to sprocket
weight, shaft weight, etc., to find true bearing loads. In this
case, the easiest method of finding the belt pull vector is by
graphical addition of TT and TS. If only the magnitude of belt
pull is needed, numerical methods for vector additions are
faster to use.
Tightside
Parallel to
TS
TT
ll
Resultant Belt Pu
0.9
0.8
0.7
)RU
For 2-sprocket
VSURFNHW
6\QFKURQRXV Drives
Synchronous
'ULYHV
0.6
0.5
60
70
80
90
100
110
120
130
140
150
$UFRI&RQWDFWRQ6PDOO6SURFNHW'HJUHHV
Arc of Contact
on Small Sprocket, Degrees
160
170
180
Figure 7
13. Bearing / Shaft Load Calculations
A. Shaft Load Calculations
If true side load on the shaft, including sprocket weight, is
desired, the sprocket weight can be added to the belt pull
using the same graphical method shown in Section 12 on
this page. The sprocket weight vector is vertical toward the
ground. Weights for standard sprockets are shown in the
sprocket specification tables.
109
14. Self-Generated Tension
B. Bearing Load Calculations
In order to find actual bearing loads, it is necessary to know
weights of machine components and the value of all other
forces contributing to the load. However, it is sometimes
desirable to know the bearing load contributed by the synchronous drive alone. Bearing loads resulting from a synchronous belt drive can be calculated knowing bearing
placement with respect to the sprocket center and the shaft
load as previously calculated. For rough estimates, machine
designers sometimes use belt pull alone, ignoring sprocket
weight. If accuracy is desired, or if the sprocket is unusually
heavy, actual shaft load values including sprocket weight
should be used.
A. Overhung Sprocket
a
b
Bearing
Load
A
Properly designed and tensioned drives will not be significantly affected by self-generated tension. While belt
overtensioning can impose higher bearing and shaft loads
and lead to reduced belt life, undertensioning can result in
self-tensioning.
When a belt is too loose for the design load, the self-tensioning characteristic results in the belt teeth climbing out of
the sprocket grooves, leading to increased stresses on the
belt teeth, accelerated tooth wear and reduced belt life.
Bearing
Load
B
Shaft
Load
Figure
Fig. A 8
Formula 17
Formula
12
B (lb) =
LoadLoad
at B, at
pounds
All synchronous belt drives exhibit a self-generating or selftightening characteristic when transmitting a load.
Laboratory testing has shown this characteristic is similar
with all tooth profiles. The designer/user should be aware
that self-tensioning can result in increased bearing and
shaft loads and reduced drive performance; i.e., short belt
life. This can be avoided by following proper tensioning procedures.
When a belt is severely undertensioned, the self-tensioning
characteristic can result in the belt ratcheting (jumping
teeth). When this occurs, significant shaft separation forces
are instantaneously developed in the drive, resulting in
damage to bearings, shafts, and other drive components
including the belt.
NOTE: This is true for all synchronous belts.
Maximum drive performance and belt life are achieved
when the belt is properly tensioned for the design load and
maintained.
Shaft Load x (a + b)
a
Formula 18
Formula
13
Load Load
at A, pounds
at A (lb) == Shaft Load x
b
a
Where: aa and
and b = spacing, inches,
Fig. A1
Where:
(in), perper
Figure
B. Sprocket Between Bearings
c
Bearing
Load
C
d
Shaft
Load
Bearing
Load
D
Figure
Fig. B 9
Formula 14
19
Formula
D (lb) =
LoadLoad
at D, at
pounds
Shaft Load × c
(c + d)
Formula 15
20
Formula
Shaft Load × d
(c + d)
Where:ccand
anddd==spacing,
spacinginches,
(in), per
Where:
perFigure
Fig. B2
C (lb) =
Load Load
at C, at
pounds
110
Troubleshooting
Symptom
Diagnosis
Possible Remedy
Unusual noise
Misaligned drive
Too low or high belt tension
Backside idler
Worn sprocket
Bent guide flange
Belt speed too high
Incorrect belt profile for the sprocket
(i.e., HTD® etc.)
Correct alignment
Adjust tension to recommended value
Use inside idler
Replace sprocket
Replace sprocket/flange
Redesign drive
Use proper Gates Poly Chain® GT ®2 belt/sprocket
Subminimal diameter
Excess load
Redesign drive using larger diameters
Redesign drive for increased capacity
Weak support structure
Excessive sprocket wear
Fixed (nonadjustable) centers
Excessive debris
Excessive load
Subminimal diameter
Belt, sprockets or shafts running too hot
Reinforce the structure
Use alternate sprocket material
Use inside idler for belt adjustment
Protect drive
Check for conductive heat transfer from
prime mover
Unusual belt degradation, such as softening
or melting
Reduce ambient drive temperature to
180°F maximum
Belt running partly off unflanged sprocket
Centers exceed 8 times small sprocket
Correct alignment
Correct parallel alignment to set belt to track on
both sprockets
Excessive belt edge wear
Correct alignment
Flange failure
Belt forcing flanges off
Correct alignment or properly secure flange
to sprocket
Excessive belt edge
wear
Damage due to handling
Flange damage
Belt too wide
Belt tension too low
Rough flange surface finish
Improper tracking
Belt hitting drive guard or bracketry
Follow proper handling instructions
Repair flange or replace sprocket
Use proper width sprocket
Replace or repair flange (to eliminate abrasive
surface)
Too low or high belt tension
Belt running partly off unflanged sprocket
Misaligned drive
(i.e., HTD, etc.)
Correct alignment
Correct alignment
Use proper Gates Poly Chain GT2 belt/sprocket
Worn sprocket
Rough sprocket teeth
Damaged sprocket
Sprocket not to dimensional specification
Belt hitting drive bracketry or other structure
Excessive load
Insufficient hardness of sprocket material
Excessive debris
Cocked bushing/sprocket assembly
Replace sprocket
Replace sprocket
Replace sprocket
Replace sprocket
Remove obstruction or use inside idler
Use a more wear resistant material
Protect belt
Install bushing per instructions
Tension loss
Belt tracking
Premature tooth wear
R
Correct alignment
Remove obstruction or use inside idler
111
Troubleshooting
Symptom
Diagnosis
Possible Remedy
Tooth shear
Excessive shock loads
Less than 6 teeth-in-mesh
Extreme sprocket runout
Worn sprocket
Backside idler
(i.e., HTD®, etc.)
Redesign drive
Replace sprocket
Replace sprocket
Use inside idler
Use proper Gates Poly Chain® GT®2 belt/sprocket
Misaligned drive
Belt undertensioned
Correct alignment
Tensile break
Excessive shock load
Subminimal diameter
Improper belt handling and storage prior to installation
Debris or foreign object in drive
Extreme sprocket runout
Sprocket has too little wear resistance
(i.e., plastic, aluminum, softer metals)
Follow proper handling and storage procedures
Protect drive
Replace sprocket
Use alternate sprocket material
Unusual sprocket wear
Belt cracking
Backside idler
Extreme low temperature startup
Extended exposure to harsh chemicals
Cocked bushing/sprocket assembly
Misaligned drive
Too low or too high belt tension
Use inside idler
Preheat drive environment
Protect drive
Install bushing per instructions
Correct alignment
Excessive temperature
(belt, bearing, housing, shafts, etc.)
Incorrect belt profile (i.e. HTD, etc.)
Use proper Gates Poly Chain GT2 belt/sprocket
Incorrect belt profile for the sprocket (i.e. HTD, etc.) Use proper Gates Poly Chain GT2 belt/sprocket
Vibration
Too low or too high belt tension
Bushing or key loose
112
R
Check and reinstall per instructions
Standard Calculations
Required
Given
Formula
Shaft speeds (rpm)
R =
Pulley diameter (D & d)
R =
D (larger pulley diameter)
d (smaller pulley diameter)
Number of pulley grooves (N & n)
R =
N (larger pulley groove no. )
n (smaller pulley groove no. )
Torque (T) in lb-in
Shaft speed (rpm)
hp =
T x rpm
63,025
Effective tension (Te) in lb.
Belt velocity in fpm
hp =
Te x V
33,000
Design horsepower (Dhp)
Rated horsepower (hp)
Service factor (SF)
Dhp = hp x SF
Power (kw)
Horsepower (hp)
kw = .7457 x hp
Shaft horsepower (hp)
Shaft speed (rpm)
T =
Effective tension (Te) in lb.
Pulley radius (R) in inches
T = Te x R
Torque (T) in N-mm
Torque (T) in lb-inches
T = 112.98 x T
Belt velocity in ft/min
Pulley pd in inches Pulley speed in rpm
V =
Belt velocity in m/s
Pulley pd in mm
Pulley speed in rpm
V = .0000524 x pd x rpm
Belt pitch length (PL) in inches
(approximate)
Center distance (C) in inches
Pulley diameters (D & d) in inches
PL = 2C + [1.57 × (D + d)] +
Arc of contact on
smaller pulley (A/Cs)
Pulley diameters (D & d) in inches
Center distance (C) in inches
(D − d) × 60 
A / Cs = 180 − 

4C


Torque (T) due to flywheel
effect (WR2) in lb-inches
(accel. and/or decel.)
Final speed (RPM)
Initial speed (rpm)
Flywheel effect (WR2) in lb-ft2
Time (t) in seconds
T =
Face width of rim (F) in inches
Material density (Z) in lbs/in3
Outside rim diameter (D) in inches
Inside rim diameter (d) in inches
WR2 =
Speed ratio (R)
Horsepower (hp)
(33,000 lb-ft/min)
Torque (T) in lb-in
2
Flywheel effect (WR ) in lb-ft
2
R
rpm (faster shaft speed)
rpm (slower shaft speed)
63,025 x hp
rpm
pd x rpm
3.82
(D − d)2
( 4C)
.039 x (RPM - rpm) x WR2
t
F x Z x (D4 - d4 )
1467
113
Useful Formulas and Calculations
Power Transmission Conversions
FORCE CONVERSION CONSTANTS
U.S. to Metric
Ouncesf × 0.2780 = Newtons
Poundsf × 4.4482 = Newtons
Poundsf × 0.4536 = Kilogramsf
Metric to U.S.
Newtons × 3.5969 = Ouncesf
Newtons × 0.2248 = Poundsf
Kilogramsf × 2.2046 = Poundsf
Metric to Metric
Kilogramsf × 9.8067 = Newtons
Newtons × 0.1020 = Kilogramsf
TORQUE CONVERSION CONSTANTS
Metric to U.S.
Newton Meters × 141.6119 = Ouncef Inches
Newton Meters × 8.8508 = Poundf Inches
Newton Meters × 0.7376 = Poundf Feet
Metric to Metric
Newton Meters × 10.1972 = Kilogramf Centimeters
Kilogramf Centimeters × 0.0981 = Newton Meters
Newton Meters × 0.1020 = Kilogramf Meters
Kilogramf Meters × 9.8067 = Newton Meters
U.S. to Metric
Ouncef Inches × 0.0071 = Newton Meters
Poundf Inches × 0.1130 = Newton Meters
Poundf Feet × 1.3558 = Newton Meters
POWER CONVERSION CONSTANTS
U.S. to Metric
Horsepower × 745.6999 = Watt
Horsepower × 0.7457 = Kilowatt
Metric to U.S.
Kilowatt × 1.3410 = Horsepower
Watt × 0.0013 = Horsepower
LINEAR BELT SPEED CONVERSION CONSTANTS
Metric to U.S.
Meters per second × 196.8504 = Feet per Minute
U.S. to Metric
Feet per Minute × 0.005080 = Meters per Second
Square Miles × 2.5900 = Square Kilometers
U.S. to U.S.
Feet per Second × 60.00 = Feet per Minute
Feet per Minute × 0.0167 = Feet per Second
Other Conversions
LENGTH CONVERSION CONSTANTS
U.S. to Metric
Inches × 25.4000 = Millimeters
Inches × 0.0254 = Meters
Feet × 0.3048 = Meters
Yards × 0.9144 = Meters
Feet × 0.0003048 = Kilometers
Statute Miles × 1.6093 = Kilometers
Nautical Miles × 1.8532 = Kilometers
Metric to U.S.
Millimeters × 0.0394 = Inches
Meters × 39.3701 = Inches
Meters × 3.2808 = Feet
Meters × 1.0936 = Yards
Kilometers × 3280.84 = Feet
Kilometers × 0.6214 = Statute Miles
Kilometers × 0.5396 = Nautical Miles
AREA CONVERSION CONSTANTS
U.S. to Metric
Square Inches × 645.160 = Square Millimeters
Square Inches × 6.4516 = Square Centimeters
Square Feet × 0.0929 = Square Meters
Square Yards × 0.8361 = Square Meters
Acres × 0.4047 = Hectares
Acres × 0.004047 = Square Kilometers
Square Miles × 2.5900 = Square Kilometers
Metric to U.S.
Square Millimeters × 0.0016 = Square Inches
Square Centimeters × 0.1550 = Square Inches
Square Meters × 10.7639 = Square Feet
Square Meters × 1.1960 = Square Yards
Hectares × 2.4711 = Acres
Square Kilometers × 247.105 = Acres
Square Kilometers × 0.3861 = Square Miles
114
R
Useful Formulas and Calculations
Other Conversions — continued
WEIGHT CONVERSION CONSTANTS
Metric to U.S.
Grams × 15.4324 = Grains
Grams × 0.0353 = Ounces (Avd.)
Grams × 0.0338 = Fluid Ounces (water)
Kilograms × 35.2740 = Ounces (Avd.)
Kilograms × 2.2046 = Pounds (Avd.)
Metric Tons (1000 Kg) × 1.1023 = Net Ton (2000 lbs.)
Metric Tons (1000 Kg) × 0.9842 = Gross Ton (2240 lbs.)
U.S. to Metric
Grains × 0.0648 = Grams
Ounces (Avd.) × 28.3495 = Grams
Fluid Ounces (water) × 29.5735 = Grams
Ounces (Avd.) × 0.0283 = Kilograms
Pounds (Avd.) × 0.4536 = Kilograms
Net Ton (2000 lbs.) × 0.9072 = Metric Tons (1000 Kg)
Gross Ton (2240 lbs.) × 1.0160 = Metric Tons 10(00 Kg)
DECIMAL AND MILLIMETER EQUIVALENTS OF FRACTIONS
Inches
Fractions
1
64
1
32
3
64
1
16
5
64
3
7
32
64
1
8
9
64
5
32
11
64
3
13
64
7
15
16
32
64
1
4
17
64
9
19
32
64
5
16
21
64
11
32
23
64
3
25
64
13
27
32
64
7
29
8
16
64
15
32
31
64
1
2
Inches
Decimals
Millimeters
.015625
.03125
.046875
.0625
.078125
.09375
.109375
.125
.140625
.15625
.171875
.1875
.203125
.21875
.234375
.250
.265625
.28125
.296875
.3125
.328125
.34375
.359375
.375
.390625
.40625
.421875
.4375
.453125
.46875
.484375
.500
.397
.794
1.191
1.588
1.984
2.381
2.778
3.175
3.572
3.969
4.366
4.763
5.159
5.556
5.953
6.350
6.747
7.144
7.541
7.938
8.334
8.731
9.128
9.525
9.922
10.319
10.716
11.113
11.509
11.906
12.303
12.700
R
Fractions
33
64
17
35
32
64
9
37
64
19
39
16
32
64
5
8
41
64
21
32
43
64
11
16
45
64
23
47
32
64
3
49
4
64
25
32
51
64
13
53
64
27
55
16
32
64
7
57
64
29
59
8
32
64
15
16
61
64
31
32
63
64
1
Decimals
Millimeters
.515625
.53125
.546875
.5625
.578125
.59375
.609375
.625
.640625
.65625
.671875
.6875
.703125
.71875
.734375
.750
.765625
.78125
.796875
.8125
.828125
.84375
.859375
.875
.890625
.90625
.921875
.9375
.953125
.96875
.984375
1.000
13.097
13.494
13.891
14.288
14.684
15.081
15.478
15.875
16.272
16.669
17.066
17.463
17.859
18.256
18.653
19.050
19.447
19.844
20.241
20.638
21.034
21.431
21.828
22.225
22.622
23.019
23.416
23.813
24.209
24.606
25.003
25.400
115
Synchronous Belt Product Design Catalogs
Gates Synchronous
Belt Products
Pitch
For Design Information Refer to:
®
®
8mm, 14mm
Poly Chain GT® 2 Belt Drive Design Manual Catalog 17595
®
®
PowerGrip GT 2
5mm, 8mm, 14mm, 20mm
PowerGrip® GT2® Belt Drive Design Manual 17195
PowerGrip® GT® 2
2mm, 3mm
Light Power & Precision Drives Design Manual Catalog 17183
Poly Chain GT 2
®
®
®
PowerGrip HTD
3mm, 5mm
PowerGrip® Timing
XL, L, H
PowerGrip GT2 Belt Drive Design Manual 17195
PowerGrip® Timing
MXL, XL
Poly Chain® GT®
Long Length Belting
8mm,14mm
PowerGrip® Timing
Long Length Belting
MXL, XL, L, H
PowerGrip HTD
Long Length Belting
3mm, 5mm, 8mm, 14mm HTD
PowerGrip® GT®
Long Length Belting
2mm, 3mm, 5mm, 8mm PowerGrip GT
Synchro-Power Polyurethane
Long Length Belting
T5, T10, T20, AT5, AT10, AT20, XL, L, H, XH, 5mm, 8mm,
14mm HTD
XL, L, H PowerGrip Timing, 8mm, 14mm PowerGrip GT2
®
®
Twin Power
Synchronous Belt Product Listing
Product
116
Page
Short Length Poly Chain GT
151
Poly Chain GT2
151
PowerGrip GT2
152-154
PowerGrip HTD
155
PowerGrip Timing
156-157
PowerGrip GT2 Twin Power
158
PowerGrip Twin Power Timing
159-160
PowerGrip Timing Long Length Belting
161
Poly Chain GT Long Length Belting
161
PowerGrip HTD Long Length Belting
162
PowerGrip GT Long Length Belting
162
Synchro-Power Polyurethane Long Length Belting
163-164
R
8mm Pitch Poly Chain® GT®2 and Short-Length Poly Chain GT Belts
8M and 8MGT Stock Belt Lengths
Pitch Length
Part No.
8M-248
8M-288
8M-352
8M-416
8M-456
8M-480
8M-544
8M-608
8MGT-640
8MGT-720
8MGT-800
8MGT-896
8MGT-1000
8MGT-1120
(mm)
(in)
248
288
352
416
456
480
544
608
640
720
800
896
1000
1120
Pitch Length
No. of
Teeth
Part No.
(mm)
(in)
No. of
Teeth
31
36
44
52
57
60
68
76
80
90
100
112
125
140
8MGT-1200
8MGT-1280
8MGT-1440
8MGT-1600
8MGT-1792
8MGT-2000
8MGT-2240
8MGT-2400
8MGT-2520
8MGT-2840
8MGT-3200
8MGT-3600
8MGT-4000
8MGT-4480
1200
1280
1440
1600
1792
2000
2240
2400
2520
2840
3200
3600
4000
4480
47.25
50.40
56.70
63.00
70.56
78.75
88.20
94.50
99.23
111.83
126.00
141.75
157.50
176.40
150
160
180
200
224
250
280
300
315
355
400
450
500
560
9.77
11.34
13.86
16.38
17.96
18.90
21.42
23.94
25.20
28.35
31.50
35.28
39.38
44.10
8MGT Stock Belt Widths
8M Short Length Stock Belt Widths
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
12
21
36
12
21
36
0.472
0.827
1.417
12
21
36
62
12
21
36
62
0.472
0.827
1.417
2.441
14mm Pitch Poly Chain GT2 Belts
14MGT Stock Belt Lengths
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
14MGT-994
14MGT-1120
14MGT-1190
14MGT-1260
14MGT-1400
14MGT-1568
14MGT-1750
14MGT-1890
14MGT-1960
14MGT-2100
14MGT-2240
994
1120
1190
1260
1400
1568
1750
1890
1960
2100
2240
39.13
44.09
46.85
49.60
55.11
61.73
68.89
74.40
77.16
82.67
88.18
71
80
85
90
100
112
125
135
140
150
160
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
14MGT-2380
14MGT-2520
14MGT-2660
14MGT-2800
14MGT-3136
14MGT-3304
14MGT-3500
14MGT-3920
14MGT-4410
2380
2520
2660
2800
3136
3304
3500
3920
4410
93.69
99.20
104.71
110.23
123.45
130.07
137.78
154.32
173.60
170
180
190
200
224
236
250
280
315
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
20
37
68
90
125
20
37
68
90
125
0.787
1.457
2.677
3.543
4.921
R
117
2mm Pitch PowerGrip® GT®2 Belts
2MR Stock Belt Lengths
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
2MR-100
2MR-112
2MR-126
2MR-134
2MR-136
2MR-140
2MR-152
2MR-158
2MR-160
2MR-164
2MR-166
2MR-168
2MR-172
2MR-180
2MR-192
2MR-200
2MR-202
2MR-210
2MR-212
2MR-216
2MR-220
2MR-232
2MR-236
2MR-240
2MR-250
2MR-252
2MR-258
100
112
126
134
136
140
152
158
160
164
166
168
172
180
192
200
202
210
212
216
220
232
236
240
250
252
258
3.94
4.41
4.96
5.28
5.35
5.51
5.98
6.22
6.30
6.46
6.54
6.61
6.77
7.09
7.56
7.87
7.95
8.27
8.35
8.50
8.66
9.13
9.29
9.45
9.84
9.92
10.16
50
56
63
67
68
70
76
79
80
82
83
84
86
90
96
100
101
105
106
108
110
116
118
120
125
126
129
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
2MR-278
2MR-280
2MR-300
2MR-320
2MR-322
2MR-346
2MR-350
2MR-364
2MR-370
2MR-380
2MR-386
2MR-400
2MR-406
2MR-420
2MR-456
2MR-470
2MR-474
2MR-488
2MR-504
2MR-528
2MR-552
2MR-576
2MR-600
2MR-640
2MR-696
2MR-744
2MR-1164
278
280
300
320
322
346
350
364
370
380
386
400
406
420
456
470
474
488
504
528
552
576
600
640
696
744
1164
10.94
11.02
11.81
12.60
12.68
13.62
13.78
14.33
14.57
14.96
15.20
15.75
15.98
16.54
17.95
18.50
18.66
19.21
19.84
20.79
21.73
22.68
23.62
25.20
27.40
29.29
45.83
139
140
150
160
161
173
175
182
185
190
193
200
203
210
228
235
237
244
252
264
276
288
300
320
348
372
582
2MR Stock Belt Widths
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
04
06
09
4
6
9
0.157
0.236
0.354
3mm Pitch PowerGrip GT2 Belts
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
3MR-165
3MR-189
3MR-201
3MR-219
3MR-225
3MR-240
3MR-243
3MR-267
3MR-282
3MR-291
3MR-300
3MR-339
3MR-348
3MR-357
3MR-360
3MR-375
3MR-420
165
189
201
219
225
240
243
267
282
291
300
339
348
357
360
375
420
6.50
7.44
7.91
8.62
8.86
9.45
9.57
10.51
11.10
11.46
11.81
13.35
13.70
14.06
14.17
14.76
16.54
55
63
67
73
75
80
81
89
94
97
100
113
116
119
120
125
140
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
3MR-447
3MR-450
3MR-474
3MR-480
3MR-483
3MR-489
3MR-537
3MR-600
3MR-630
3MR-684
3MR-750
3MR-840
3MR-945
3MR-1050
3MR-1080
3MR-1536
3MR-2061
447
450
474
480
483
489
537
600
630
684
750
840
945
1050
1080
1536
2062
17.60
17.72
18.66
18.90
19.02
19.25
21.14
23.62
24.80
26.93
29.53
33.07
37.20
41.34
42.52
60.47
81.18
149
150
158
160
161
163
179
200
210
228
250
280
315
350
360
512
687
118
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
06
09
15
6
9
15
0.236
0.354
0.591
R
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
5MR-300
5MR-355
5MR-375
5MR-400
5MR-405
5MR-425
5MR-450
5MR-500
5MR-535
5MR-565
5MR-580
5MR-600
5MR-625
300
355
375
400
405
425
450
500
535
565
580
600
625
11.81
13.98
14.76
15.75
15.94
16.73
17.72
19.69
21.06
22.24
22.83
23.62
24.61
60
71
75
80
81
85
90
100
107
113
116
120
125
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
5MR-650
5MR-700
5MR-750
5MR-800
5MR-850
5MR-900
5MR-1000
5MR-1150
5MR-1300
5MR-1450
5MR-1600
5MR-1720
5MR-2100
650
700
750
800
850
900
1000
1150
1300
1450
1600
1720
2100
25.59
27.56
29.53
31.50
33.46
35.43
39.37
45.28
51.18
57.09
62.99
67.72
82.67
130
140
150
160
170
180
200
230
260
290
320
344
420
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
09
15
25
9
15
25
0.354
0.591
0.984
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
384-8MGT
480-8MGT
560-8MGT
600-8MGT
640-8MGT
720-8MGT
800-8MGT
840-8MGT
880-8MGT
920-8MGT
960-8MGT
1040-8MGT
1064-8MGT
1120-8MGT
1160-8MGT
1200-8MGT
1224-8MGT
384
480
560
600
640
720
800
840
880
920
960
1040
1064
1120
1164
1200
1224
15.12
18.89
22.05
23.62
25.20
28.35
31.50
33.07
34.65
36.22
37.80
40.94
41.89
44.09
45.67
47.24
48.19
48
60
70
75
80
90
100
105
110
115
120
130
133
140
145
150
153
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
1280-8MGT
1440-8MGT
1512-8MGT
1584-8MGT
1600-8MGT
1760-8MGT
1800-8MGT
2000-8MGT
2200-8MGT
2400-8MGT
2600-8MGT
2800-8MGT
3048-8MGT
3280-8MGT
3600-8MGT
4400-8MGT
1280
1440
1512
1584
1600
1760
1800
2000
2200
2400
2600
2800
3048
3280
3600
4400
50.39
56.69
59.53
62.36
62.99
69.29
70.87
78.74
86.61
94.49
102.36
110.24
120.00
129.13
141.73
173.23
160
180
189
198
200
220
225
250
275
300
325
350
381
410
450
550
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
20
30
50
85
20
30
50
85
0.787
1.181
1.969
3.346
Refer to the Industrial Power Transmission Products catalog, 19993, for a listing of 8mm and 14mm pitch PowerGrip GT belts for replacement use on existing
PowerGrip GT or HTD drives.
R
119
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
966-14MGT
1190-14MGT
1400-14MGT
1610-14MGT
1778-14MGT
1890-14MGT
2100-14MGT
2310-14MGT
2450-14MGT
2590-14MGT
2800-14MGT
3150-14MGT
966
1190
1400
1610
1778
1890
2100
2310
2450
2590
2800
3150
38.03
46.85
55.12
63.39
70.00
74.41
82.63
90.94
96.46
101.97
110.24
124.02
69
85
100
115
127
135
150
165
175
185
200
225
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
3360-14MGT
3500-14MGT
3850-14MGT
4326-14MGT
4578-14MGT
4956-14MGT
5320-14MGT
5740-14MGT
6160-14MGT
6860-14MGT
3360
3500
3850
4326
4578
4956
5320
5740
6160
6860
132.28
137.80
151.57
170.32
180.24
195.12
209.45
225.98
242.52
270.08
240
250
275
309
327
354
380
410
440
490
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
40
55
85
115
170
40
55
85
115
170
1.575
2.165
3.346
4.528
6.693
Refer to the Industrial Power Transmission Products catalog, 19993, for a listing of 8mm and 14mm pitch PowerGrip GT belts for replacement use on existing
PowerGrip GT or HTD drives.
20M Stock Belt Lengths
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
2000-20M
2500-20M
3400-20M
3800-20M
4200-20M
4600-20M
5000-20M
5200-20M
5400-20M
2000
2500
3400
3800
4200
4600
5000
5200
5400
78.74
98.43
133.86
149.61
165.35
181.10
196.85
204.72
212.60
100
125
170
190
210
230
250
260
270
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
5600-20M
5800-20M
6000-20M
6200-20M
6400-20M
6600-20M
5600
5800
6000
6200
6400
6600
220.47
228.35
236.22
244.09
251.97
259.84
280
290
300
310
320
330
20M Stock Belt Widths
120
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
115
170
230
290
340
115
170
230
290
340
4.528
6.693
9.055
11.417
13.386
R
3mm Pitch PowerGrip® HTD® Belts
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
150-3M
159-3M
168-3M
177-3M
189-3M
201-3M
213-3M
225-3M
240-3M
252-3M
255-3M
267-3M
285-3M
300-3M
312-3M
318-3M
339-3M
357-3M
363-3M
384-3M
390-3M
399-3M
420-3M
150
159
168
177
189
201
213
225
240
252
255
267
285
300
312
318
339
357
363
384
390
399
420
5.91
6.26
6.61
6.97
7.44
7.91
8.39
8.86
9.45
9.92
10.04
10.51
11.22
11.81
12.28
12.52
13.35
14.06
14.29
15.12
15.35
15.71
16.54
50
53
56
59
63
67
71
75
80
84
85
89
95
100
104
106
113
119
121
128
130
133
140
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
447-3M
474-3M
486-3M
501-3M
513-3M
531-3M
564-3M
597-3M
633-3M
669-3M
711-3M
753-3M
795-3M
843-3M
882-3M
945-3M
1002-3M
1062-3M
1125-3M
1191-3M
1263-3M
447
474
486
501
513
531
564
597
633
669
711
753
795
843
882
945
1002
1062
1125
1191
1263
17.60
18.66
19.13
19.72
20.20
20.91
22.20
23.50
24.92
26.34
27.99
29.65
31.30
33.19
34.72
37.20
39.45
41.81
44.29
46.89
49.72
149
158
162
167
171
177
188
199
211
223
237
251
265
281
294
315
334
354
375
397
421
3M HTD Stock Belt Widths
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
06
09
15
6
9
15
0.236
0.354
0.591
5mm Pitch PowerGrip HTD Belts
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
350-5M
375-5M
400-5M
425-5M
450-5M
475-5M
500-5M
535-5M
565-5M
600-5M
635-5M
670-5M
710-5M
740-5M
800-5M
850-5M
350
375
400
425
450
475
500
535
565
600
635
670
710
740
800
850
13.78
14.76
15.75
16.73
17.72
18.70
19.69
21.06
22.24
23.62
25.00
26.38
27.95
29.13
31.50
33.46
70
75
80
85
90
95
100
107
113
120
127
134
142
148
160
170
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
890-5M
950-5M
1000-5M
1050-5M
1125-5M
1195-5M
1270-5M
1420-5M
1595-5M
1690-5M
1790-5M
1895-5M
2000-5M
2250-5M
2525-5M
890
950
1000
1050
1125
1195
1270
1420
1595
1690
1790
1895
2000
2250
2525
35.04
37.40
39.37
41.34
44.29
47.05
50.00
55.91
62.80
66.54
70.47
74.61
78.74
88.58
99.40
178
190
200
210
225
239
254
284
319
338
358
379
400
450
505
5M HTD Stock Belt Widths
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
09
15
25
9
15
25
0.354
0.591
0.984
R
121
MXL Pitch PowerGrip® Timing Belts
MXL Stock Belt Lengths
Part
No.
Pitch Length
(in)
No.
of Teeth
Part
No.
Pitch Length
(in)
No.
of Teeth
36MXL
40MXL
44MXL
48MXL
56MXL
64MXL
68MXL
72MXL
76MXL
80MXL
88MXL
96MXL
104MXL
3.60
4.00
4.40
4.80
5.60
6.40
6.80
7.20
7.60
8.00
8.80
9.60
10.40
45
50
55
60
70
80
85
90
95
100
110
120
130
112MXL
120MXL
132MXL
140MXL
152MXL
160MXL
168MXL
180MXL
200MXL
208MXL
236MXL
240MXL
320MXL
11.20
12.00
13.20
14.00
15.20
16.00
16.80
18.00
20.00
20.80
23.60
24.00
32.00
140
150
165
175
190
200
210
225
250
260
295
300
400
MXL Stock Belt Widths
Belt Width
Code
Belt Width
(in)
012
019
025
0.125
0.188
0.250
XL Pitch PowerGrip Timing Belts
XL Stock Belt Lengths
Part No.
Pitch Length
(in)
No. of
Teeth
50XL
60XL
70XL
80XL
90XL
100XL
110XL
120XL
130XL
140XL
150XL
160XL
170XL
180XL
190XL
200XL
210XL
220XL
230XL
240XL
250XL
5.00
6.00
7.00
8.00
9.00
10.00
11.00
12.00
13.00
14.00
15.00
16.00
17.00
18.00
19.00
20.00
21.00
22.00
23.00
24.00
25.00
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Part No.
Pitch Length
(in)
No. of
Teeth
260XL
280XL
290XL
300XL
310XL
330XL
340XL
350XL
370XL
380XL
390XL
400XL
420XL
450XL
460XL
480XL
500XL
570XL
630XL
770XL
26.00
28.00
29.00
30.00
31.00
33.00
34.00
35.00
37.00
38.00
39.00
40.00
42.00
45.00
46.00
48.00
50.00
57.00
63.00
77.00
130
140
145
150
155
165
170
175
185
190
195
200
210
225
230
240
250
285
315
385
XL Stock Belt Widths
122
Belt Width
Code
Belt Width
(in)
025
037
0.250
0.375
R
L Pitch PowerGrip® Timing Belts
L Stock Belt Lengths
Part No.
Pitch Length
(in)
No. of
Teeth
124L
135L
150L
165L
187L
195L
210L
225L
240L
255L
270L
285L
300L
315L
12.38
13.50
15.00
16.50
18.75
19.50
21.00
22.50
24.00
25.50
27.00
28.50
30.00
31.50
33
36
40
44
50
52
56
60
64
68
72
76
80
84
Part No.
Pitch Length
(in)
No. of
Teeth
322L
345L
367L
390L
420L
450L
480L
510L
540L
600L
660L
817L
900L
32.25
34.50
36.75
39.00
42.00
45.00
48.00
51.00
54.00
60.00
66.00
81.75
90.00
86
92
98
104
112
120
128
136
144
160
176
218
240
L Stock Belt Widths
Belt Width
Code
Belt Width
(in)
050
075
100
0.500
0.750
1.000
H Pitch PowerGrip Timing Belts
H Stock Belt Lengths
Part No.
Pitch Length
No. of Teeth
Part No.
Pitch Length
No. of Teeth
210H
220H
230H
240H
270H
300H
320H
330H
340H
350H
360H
370H
390H
400H
410H
420H
450H
480H
490H
510H
540H
560H
570H
21.00
22.00
23.00
24.00
27.00
30.00
32.00
33.00
34.00
35.00
36.00
37.00
39.00
40.00
41.00
42.00
45.00
48.00
49.00
51.00
54.00
56.00
57.00
42
44
46
48
54
60
64
66
68
70
72
74
78
80
82
84
90
96
98
102
108
112
114
585H
600H
630H
645H
660H
700H
730H
750H
780H
800H
820H
840H
850H
900H
960H
1000H
1100H
1140H
1250H
1400H
1550H
1700H
58.50
60.00
63.00
64.50
66.00
70.00
73.00
75.00
78.00
80.00
82.00
84.00
85.00
90.00
96.00
100.00
110.00
114.00
125.00
140.00
155.00
170.00
117
120
126
129
132
140
146
150
156
160
164
168
170
180
192
200
220
228
250
280
310
340
H Stock Belt Widths
Belt Width
Code
Belt Width
(in)
75
100
150
200
300
0.750
1.000
1.500
2.000
3.000
Refer to the Industrial Power Transmission Products catalog, 19993, for a listing of XH and XXH PowerGrip Timing belts for replacement use on
existing drives.
R
123
8mm Pitch PowerGrip® GT®2 Twin Power® Belts
TP 8MGT Stock Belt Lengths
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
TP840-8MGT
TP880-8MGT
TP920-8MGT
TP960-8MGT
TP1040-8MGT
TP1120-8MGT
TP1200-8MGT
TP1224-8MGT
TP1280-8MGT
TP1440-8MGT
TP1600-8MGT
840
880
920
960
1040
1120
1200
1224
1280
1440
1600
33.08
34.65
36.23
37.80
40.95
44.10
47.25
48.20
50.40
56.70
63.00
105
110
115
120
130
140
150
153
160
180
200
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
TP1760-8MGT
TP1800-8MGT
TP2000-8MGT
TP2200-8MGT
TP2400-8MGT
TP2600-8MGT
TP2800-8MGT
TP3048-8MGT
TP3280-8MGT
TP3600-8MGT
TP4400-8MGT
1760
1800
2000
2200
2400
2600
2800
3048
3280
3600
4400
69.30
70.88
78.75
86.63
94.50
102.38
110.25
120.02
129.15
141.75
173.25
220
225
250
275
300
325
350
381
410
450
550
8MGT2 Twin Power Stock Belt Widths
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
20
30
50
85
20
30
50
85
0.787
1.181
1.969
3.346
14mm Pitch PowerGrip GT2 Twin Power Belts
TP 14MGT Stock Belt Lengths
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
TP966-14MGT
TP1190-14MGT
TP1400-14MGT
TP1610-14MGT
TP1778-14MGT
TP1890-14MGT
TP2100-14MGT
TP2310-14MGT
TP2450-14MGT
966
1190
1400
1610
1778
1890
2100
2310
2450
38.03
46.85
55.12
63.38
70.00
74.41
82.67
90.94
96.45
69
85
100
115
127
135
150
165
175
Pitch Length
Part No.
(mm)
(in)
No. of
Teeth
TP2590-14MGT
TP2800-14MGT
TP3150-14MGT
TP3360-14MGT
TP3500-14MGT
TP3850-14MGT
TP4326-14MGT
TP4578-14MGT
2590
2800
3150
3360
3500
3850
4326
4578
101.96
110.23
124.01
132.28
137.79
151.57
170.31
180.23
185
200
225
240
250
275
309
327
14MGT2 Twin Power Stock Belt Widths
Belt Width
Code
Belt Width
(mm)
Belt Width
(in)
40
55
85
40
55
85
1.575
2.165
3.346
Refer to the Industrial Power Transmission Products catalog, 19993, for a listing of 8mm and 14mm pitch PowerGrip GT Twin Power belts for replacement use
on existing PowerGrip GT or HTD Twin Power drives.
124
R
XL Pitch PowerGrip® Twin Power® Timing Belts
TP XL Stock Belt Lengths
Part No.
Pitch Length
(in)
No. of
Teeth
Part No.
Pitch Length
(in)
No. of
Teeth
TP140XL
TP150XL
TP160XL
TP170XL
TP180XL
TP190XL
TP200XL
TP210XL
TP220XL
TP230XL
14.00
15.00
16.00
17.00
18.00
19.00
20.00
21.00
22.00
23.00
70
75
80
85
90
95
100
105
110
115
TP240XL
TP250XL
TP260XL
TP270XL
TP280XL
TP290XL
TP300XL
TP310XL
TP330XL
TP340XL
24.00
25.00
26.00
27.00
28.00
29.00
30.00
31.00
33.00
34.00
120
125
130
135
140
145
150
155
165
170
XL Twin Power Stock Belt Widths
Belt Width
Code
Belt Width
(in)
025
037
0.250
0.375
L Pitch PowerGrip Twin Power Timing Belts
TP L Stock Belt Lengths
Part No.
Pitch Length
(in)
No. of
Teeth
TP150L
TP165L
TP187L
TP195L
TP210L
TP225L
TP240L
TP255L
TP270L
TP285L
TP300L
TP322L
TP345L
15.00
16.50
18.75
19.50
21.00
22.50
24.00
25.50
27.00
28.50
30.00
32.25
34.50
40
44
50
52
56
60
64
68
72
76
80
86
92
Part No.
Pitch Length
(in)
No. of
Teeth
TP367L
TP390L
TP420L
TP450L
TP480L
TP510L
TP540L
TP600L
TP660L
TP817L
36.75
39.00
42.00
45.00
48.00
51.00
54.00
60.00
66.00
81.75
98
104
112
120
128
136
144
160
176
218
L Twin Power Stock Belt Widths
Belt Width
Code
Belt Width
(in)
050
075
100
0.500
0.750
1.000
R
125
H Pitch PowerGrip® Twin Power® Timing Belts
TP H Stock Belt Lengths
Part No.
Pitch Length
(in)
No. of
Teeth
TP240H
TP270H
TP300H
TP330H
TP350H
TP360H
TP390H
TP400H
TP420H
TP450H
TP480H
TP510H
TP540H
TP570H
24.00
27.00
30.00
33.00
35.00
36.00
39.00
40.00
42.00
45.00
48.00
51.00
54.00
57.00
48
54
60
66
70
72
78
80
84
90
96
102
108
114
Part No.
Pitch Length
(in)
No. of
Teeth
TP600H
TP630H
TP660H
TP700H
TP750H
TP800H
TP850H
TP900H
TP1000H
TP1100H
TP1250H
TP1400H
TP1700H
60.00
63.00
66.00
70.00
75.00
80.00
85.00
90.00
100.00
110.00
125.00
140.00
170.00
120
126
132
140
150
160
170
180
200
220
250
280
340
H Twin Power Stock Belt Widths
126
Belt Width
Code
Belt Width
(in)
075
100
150
200
300
0.750
1.000
1.500
2.000
3.000
R
PowerGrip® Timing — Long Length Belting
Mini-Pitch (0.080/MXL) — Fiberglass Tensile
Part No.
Product
No.
LL025MXL
LL037MXL
LL050MXL
9314-2020
9314-2014
9314-2038
1/5 Pitch (0.200/XL) - Steel Tensile
Width
(in)
Net Wt. /ft.
(lbs)
Part No.
Product
No.
1
0.01
0.02
0.02
LL025XLST
LL037XLST
LL050XLST
9314-10028
9314-10029
9314-10030
3
1
4
8
2
1/5 Pitch (0.200/XL) - Fiberglass Tensile
Part No.
Product
No.
LL025XL
LL037XL
LL050XL
LL075XL
9314-0001
9314-0002
9314-2012
9314-2090
Net Wt. /ft.
(lbs)
1
0.01
0.01
0.03
0.04
1
3
4
8
2
4
Net Wt. /ft.
(lbs)
1
0.064
0.072
0.082
3
1
4
8
2
3/8 Pitch (0.375/L) - Steel Tensile
Width
(in)
3
Width
(in)
Part No.
Product
No.
LL050LST
LL075LST
9314-10035
9314-10036
Width
(in)
Net Wt. /ft.
(lbs)
1
0.163
0.198
3
2
4
1/2" Pitch (0.500"/H) - Steel Tensile
Part No.
Product
No.
Width
(in)
Net Wt. /ft.
(lbs)
LL075HST
LL100HST
9314-10011
9314-10037
3/4
1
0.229
0.253
3/8 Pitch (0.375/L) - Fiberglass Tensile
Part No.
Product
No.
LL037L
LL050L
LL075L
LL100L
9314-2089
9314-0004
9314-0007
9314-0015
Width
(in)
3
1
3
Net Wt. /ft.
(lbs)
0.02
0.02
0.04
0.05
8
2
4
1
1/2" Pitch (0.500"/H) - Fiberglass Tensile
Part No.
Product
No.
LL050H
LL075H
LL100H
LL150H
LL200H
LL300H
9314-0003
9314-0006
9314-0008
9314-0017
9314-0021
9314-0025
Width
(in)
Net Wt. /ft.
(lbs)
1
0.04
0.06
0.12
0.12
0.16
0.24
3
2
4
1
1 12
2
3
Poly Chain® GT® — Long Length Belting
8mm - 14mm Pitch
Part No.
Product
No.
Width
(in)
Net Wt. /ft.
(lbs)
LL8M012GT
LL8M021GT
LL8M036GT
LL14M020GT
LL14M037GT
9305-0001
9305-0002
9305-0003
9305-0005
9305-0006
12
21
36
20
37
0.03
0.06
0.11
0.10
0.19
R
127
PowerGrip® HTD® — Long Length Belting
PowerGrip HTD Belting - Fiberglass Tensile
3mm - 5mm - 8mm - 14mm Pitch
PowerGrip HTD Belting - Steel Tensile
14mm Pitch
Part No.
Product
No.
Width
(in)
Net Wt. /ft.
(lbs)
LL3M06
LL3M09
LL3M15
LL5M09
LL5M15
LL5M25
LL8M20
LL8M30
LL8M50
LL8M85
LL14M40
LL14M55
LL14M85
9308-0044
9308-0003
9308-0084
9308-0045
9308-0033
9308-0025
9308-0001
9308-0004
9308-0005
9308-0006
9308-10009
9308-10020
9308-10057
6
9
15
9
15
25
20
30
50
85
40
55
85
0.01
0.01
0.01
0.01
0.01
0.05
0.08
0.13
0.21
0.36
0.26
0.35
0.55
Part No.
Product
No.
Width
(in)
Net Wt. /ft.
(lbs)
LL14M40ST
LL14M55ST
LL14M85ST
9308-10016
9308-10051
9308-10084
40
55
85
0.76
1.02
1.51
PowerGrip GT® — Long Length Belting
PowerGrip GT - Fiberglass Tensile
2mm - 3mm - 5mm - 8mm Pitch
PowerGrip GT - Steel Tensile
5mm - 8mm Pitch
Part No.
Product
No.
Width
(in)
Net Wt. /ft.
(lbs)
LL2MR04
LL2MR06
LL2MR09
LL3MR06
LL3MR09
LL3MR15
LL5MR09
LL5MR15
LL5MR25
LL8MR20
LL8MR30
LL8MR50
LL8MR85
9396-0033
9396-0009
9396-0011
9396-0002
9396-0012
9396-0021
9396-0020
9396-0025
9396-0018
9396-0029
9396-0030
9396-0031
9396-0032
4
6
9
6
9
15
9
15
25
20
30
50
85
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.05
0.08
0.13
0.21
0.36
128
R
Part No.
Product
No.
Width
(in)
Net Wt. /ft.
(lbs)
LL5MR15ST
LL5MR25ST
LL8MR20ST
LL8MR30ST
LL8MR50ST
9308-10043
9308-40417
9308-10049
9308-10050
9308-40433
15
25
20
30
50
0.18
0.23
0.29
0.37
0.53
Synchro-Power® PolyUrethane Long Length Belting
T5 Pitch
AT5 Pitch
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U6T5LL
U8T5LL
U10T5LL
U12T5LL
U16T5LL
U20T5LL
U25T5LL
U32T5LL
U50T5LL
6
8*
10
12*
16
20*
25
32
50
.01
.01
.02
.02
.03
.03
.04
.05
.08
T10 Pitch
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U6AT5LL
U10AT5LL
U16AT5LL
U20AT5LL
U25AT5LL
U32AT5LL
U50AT5LL
6
10
16
20
25
32
50
.01
.02
.03
.04
.05
.06
.10
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U16AT10LL
U20AT10LL
U25AT10LL
U32AT10LL
U40AT10LL
U50AT10LL
U75AT10LL
U100AT10LL
16
20*
25
32
40*
50
75*
100*
.06
.08
.10
.13
.16
.20
.30
.40
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U25AT20LL
U32AT20LL
U50AT20LL
U75AT20LL
U100AT20LL
U120AT20LL
U150AT20LL
25*
32*
50*
75*
100*
120*
150*
.17
.22
.34
.50
.67
.81
1.01
AT10 Pitch
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U12T10LL
U16T10LL
U20T10LL
U25T10LL
U32T10LL
U40T10LL
U50T10LL
U75T10LL
U100T10LL
12*
16
20*
25
32
40*
50
75
100
.04
.05
.07
.08
.11
.13
.16
.25
.33
T20 Pitch
AT20 Pitch
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U25T10LL
U32T20LL
U50T20LL
U75T20LL
U100T20LL
25*
32*
50*
75*
100*
.13
.17
.27
.40
.54
*Standard/Non-Stock item, may require manufacturing lead time.
R
129
Synchro-Power® PolyUrethane Long Length Belting
1/5"Pitch (0.200"/XL)
5mm Pitch HTD
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U.25INXL LL
U.31INXL LL
U.375INXL LL
U.50INXL LL
U.75INXL LL
U1.00INXL LL
U2.00INXL LL
.250*
.310*
.375*
.500*
.750*
1.000*
2.000*
.01
.01
.01
.02
.03
.03
.07
3/8" Pitch (0.375"/L)
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U10MTD5MLL
U15MTD5MLL
U25MTD5MLL
U50MTD5MLL
10*
15*
25*
50*
.03
.04
.07
.13
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U10MTD8MLL
U15MTD8MLL
U20MTD8MLL
U30MTD8MLL
U50MTD8MLL
U85MTD8MLL
U100MTD8MLL
10*
15*
20*
30*
50*
85*
100*
.04
.06
.08
.13
.21
.36
.42
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U25MTD14MLL
U40MTD14MLL
U55MTD14MLL
U85MTD14MLL
U100MTD14MLL
25*
40*
55*
85*
100*
.19
.30
.41
.64
.75
8mm Pitch HTD
Part No.
Width
(mm)
U.375INL LL
U.50INL LL
U.75INL LL
U1.00INL LL
U1.50INL LL
U2.00INL LL
.375
.500
.750
1.000
1.500*
2.000*
Wt. per ft.
(lbs)
.02
.02
.03
.04
.06
.08
1/2" Pitch (0.500"/H)
14MM Pitch
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U.50INH LL
U.75INH LL
U1.00INH LL
U1.50INH LL
U2.00INH LL
U3.00INH LL
U4.00INH LL
.500
.750
1.000
1.500
2.000
3.000*
4.000*
.02
.04
.05
.07
.09
.14
.19
Part No.
Width
(mm)
Wt. per ft.
(lbs)
U1.00INXHLL
U1.50INXHLL
U2.00INXHLL
U3.00INXHLL
U4.00INXHLL
1.000*
1.500*
2.000*
3.000*
4.000*
.22
.32
.43
.65
.86
7/8" Pitch (0.875"/XH)
130
R
Application Examples
The following illustrations show a few of the many ways that Poly Chain® GT®2 belt drives can be used to transmit both power
and motion. Synchronous belt drive systems are amazingly versatile, yet reliable and efficient.
Common Drive Configurations
Multiple Shaft Drive Configurations
R
131
Application Examples — continued
Conveying and Material Transport Applications
Rack and Carriage Drive Configurations
132
R
Long Length Drive Applications
Complex Carriage Drive Configuration
R
133
Lead Screw Drive Applications
134
R
990 South Broadway
P.O. Box 5887
Denver, CO 80217
For more information on any of Gates
Industrial Power Transmission products,
programs or services, contact your local
Gates representative, call the Gates
Belt Information Line at 800-777-6363,
or visit us at www.gates.com.
Gates Canada, Inc.
300 Henry Street
Brantford, ON N3S 7R5
Telephone: 519-759-4141
Fax: 519-759-0944
Your Local Distributor
PolyChain® GT®2 Belt
Drive Design Manual
THE DRIVING FORCE
IN
POWER TRANSMISSION
#17595
March 2000

Gates Poly Chain® GT®2 Drive Design Manual

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