Caterpillar Performance Handbook

Transcription

WHEEL
TRACTOR
SCRAPERS
Caterpillar
Performance
Handbook
®
Edition 44
800.437.4228
www.hawthornecat.com
© 2014 Caterpillar. All Rights Reserved. CAT, CATERPILLAR, BUILT FOR IT, their respective logos, “Caterpillar Yellow,” the “Power Edge” trade dress as well as
corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.
WHEEL TRACTOR-SCRAPERS
CONTENTS
WHEEL TRACTOR-SCRAPERS
Specifications:
Elevating Bowl . . . . . . . . . . . . . . . . . . . . . . . . . . 24-2
Single Engine Open Bowl . . . . . . . . . . . . . . . . . 24-3
Optional Push-Pull . . . . . . . . . . . . . . . . . . . . . . 24-3
Twin Engine Open Bowl . . . . . . . . . . . . . . . . . . . 24-4
Coal Bowl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-6
Ground Engaging Tools:
Router Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-7
Cutting Edges . . . . . . . . . . . . . . . . . . . . . . . . . . 24-7
Bowl Side Protectors . . . . . . . . . . . . . . . . . . . . . 24-8
Elevating Scraper . . . . . . . . . . . . . . . . . . . . . . . . 24-9
Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-9
Material Application Guide . . . . . . . . . . . . . . .24-10
Push-Load TTT Match . . . . . . . . . . . . . . . . . . .24-10
Tire Options, All Models. . . . . . . . . . . . . . . . . . . .24-11
Cushion Hitch . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-12
Wheel Tractor-Scraper Anatomy . . . . . . . . . . . . 24-12
Use of Rimpull-Speed-Gradeability Curves. . . . 24-13
Fixed Times for Scrapers. . . . . . . . . . . . . . . . . . . 24-15
Use of Retarder Curves. . . . . . . . . . . . . . . . . . . . 24-15
Curves/Charts:
621K Rimpull, Retarding . . . . . . . . . . . . . . . . 24-17
623K Rimpull, Retarding . . . . . . . . . . . . . . . . .24-19
627K Rimpull, Retarding . . . . . . . . . . . . . . . . 24-21
631G Rimpull, Retarding . . . . . . . . . . . . . . . . 24-23
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Wheel Tractor-Scrapers
Specifications
● Elevating Bowl
MODEL
Flywheel Power
Approx. Operating Weight (Empty)◀
Scraper Capacity: Struck
Scraper Capacity: Heaped
Rated Load
Weight Distribution — Empty:
Drive
Rear
Weight Distribution — Loaded:
Drive
Rear
Engine Model
Rated Engine RPM
Displacement
Top Speed (Loaded)
180° Curb-to-Curb Turning Width
Tires — Standard:
Tractor
Scraper
Width of Cut
Maximum Depth of Cut
Elevator Flight Spacing
Number of Flights
Maximum Floor Opening
Maximum Depth of Spread
Fuel Tank Refill Capacity
GENERAL DIMENSIONS:
Height — Overall Shipping
Wheelbase
Overall Length
Overall Width
Center Line of Scraper Tread
Center Line of Tractor Tread
623K
304 kW
39 937 kg
14.4 m3
17.6 m3
25 038 kg
407 hp
88,061 lb
18.8 yd3
23 yd3
55,200 lb
63%
37%
52%
48%
C13 ACERT
2000
763 in3
33.5 mph
12.5 L
53.9 km/h
—
33.25R29**E3
33.25R29**E3
3.14 m
262 mm
520 mm
10'4"
10.3"
20"
15
1.34 mm
465 mm
763 L
4'4"
18'3"
201 U.S. gal
3.77 m
8.37 m
13.77 m
3.57 m
2.29 m
2.28 m
12'3"
27'5"
45'2"
11'7"
7'5"
7'4"
◀ Operating
weight includes coolants, lubricants, full fuel tank and operator. Operating weights for the 623K are based on U.S. EPA Tier 4 Final/EU Stage IV
platforms machines. Deduct 248 kg (547 lb) for the operating weight for the 623K U.S. EPA Tier 2 equivalent.
Elevating
The Elevating Wheel Tractor-Scraper is a self-loading hauling system with the added ability to mix/homogenize
material and do precise finishing work.
Elevating Bowl Advantages:
● Load/haul/spread with little support equipment
● Conditions material as it loads
● Capable to work as a single machine
● Aids in compaction
● Finishing work
● Low rolling resistance applications
● Short cut areas
● Favorable material types
● Windrow applications
● Thin, precise lifts
24-2
Single Engine Advantages
(Compared to Tandem Engine):
● Low fuel usage
● Lower gross vehicle weight
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●
Specifications
Single Engine Open Bowl
● Optional Push-Pull
MODEL
Flywheel Power
Rated Load
Drive
Rear
Drive
Rear
Engine Model
Rated Engine RPM
Displacement
Top Speed (Loaded)
Tires — Tractor Drive
Tires — Scraper
Width of Cut
Fuel Tank Refill Capacity
GENERAL DIMENSIONS: Non Push-Pull
Wheelbase
Overall Length
Overall Width
Shipping Width
(Draft Arm on Inside of Bowl)
GENERAL DIMENSIONS: Push-Pull
Operating Weight (Empty)
Overall Length (With Bail Down)
Drive
Rear
Drive
Rear
621K
304 kW
36 185 kg
13 m3
18.4 m3
26 127 kg
631G
407 hp
79,787 lb
17.1 yd3
24 yd3
57,610 lb
345/373 kW
47 628 kg
18.3 m3
26 m3
37 013 kg
462/500 hp
105,002 lb
24 yd3
34 yd3
81,600 lb
65%
35%
64%
36%
53%
47%
C13 ACERT™
2000
52%
48%
C18 ACERT
1800
3
12.5 L
763 in
53.9 km/h
33.5 mph
11.8 m
38'7"
33.25R29**E3
33.25R29**E3
3.14 m
10'4"
315 mm
12.4"
540 mm
21.3"
763 L
201 U.S. gal
4.03 m
7.99 m
14.02 m
3.57 m
18.1 L
1105 in
53 km/h
33 mph
12.2 m
40'1"
37.25R35★★E3
37.25R35★★E3
3.51 m
11'6"
437 mm
17.2"
480 mm
18.9"
814 L
215 U.S. gal
13'2"
26'2"
45'10"
11'7"
3.86 m
8.77 m
14.71 m
3.94 m
2.29 m
2.28 m
7'5"
7'4"
3.63 m
2.46 m
2.46 m
36 567 kg
15.58 m
80,630 lb
51'1"
—
24
3
**
*
12'8"
28'9"
48'3"
12'11"
11'11"
8'1"
8'1"
65%
35%
53%
47%
**Optional Shipping Configuration.
**Standard Shipping Configuration.
◀ Operating weight includes standard machine, coolant, lubricants, full fuel tank, and operator. Operating weights for the 621K are based on Tier 4 Final/
Stage IV platforms machines. Deduct 247 kg (545 lb) for the operating weight for the 621K Tier 2 equivalent.
Single Engine Open Bowl
The Open Bowl Wheel Tractor-Scraper is available as a self-loading, 621K push pull or push-loaded hauling system
with a broad material appetite. The broad material appetite allows the Open Bowl Wheel Tractor-Scraper to be used in
general construction, heavy construction, mining, and waste applications.
Open Bowl Advantages:
● Quick load/unload
● Spread evenly on-the-go
● Broad material appetite
● Varying material conditions
● High production
Single Engine Advantages
(Compared to Tandem Engine):
● Low fuel usage
● Lower gross vehicle weight
● Loads quickly with the aid of a Track-Type Tractor and
hauls to fill carrying minimum machine weight
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Specifications
● Twin Engine Open Bowl
MODEL
Flywheel Power: Tractor
Flywheel Power: Scraper
Rated Load
Weight Distribution — Empty: Front
Weight Distribution — Empty: Rear
Weight Distribution — Loaded: Front
Weight Distribution — Loaded: Rear
Engine Model: Tractor
Engine Model: Scraper
Rated Engine RPM: Tractor
Rated Engine RPM: Scraper
Displacement: Tractor
Displacement: Scraper
Top Speed (Loaded)
Tires — Tractor Drive
Tires — Scraper
Width of Cut
Fuel Tank Refill Capacity: Tractor
Fuel Tank Refill Capacity: Scraper
GENERAL DIMENSIONS:
Non Push-Pull
Wheelbase
Overall Length
Overall Width
Shipping Width
GENERAL DIMENSIONS: Push-Pull
Operating Weight (Empty)◀
Overall Length
Front
Rear
Front
Rear
627K
304 kW
216 kW
40 913 kg
13 m3
18.4 m3
26 127 kg
637G
407 hp
290 hp
90,213 lb
17.1 yd3
24 yd3
57,610 lb
59%
41%
50%
50%
C13 ACERT
C9.3 ACERT
2000
2150
12.5 L
763 in3
9.29 L
567 in3
53.9 km/h
33.5 mph
11.8 m
38'7"
33.25R29**E3
33.25R29**E3
3.14 m
10'4"
315 mm
12.4"
540 mm
21.3"
—
1272 L
336 U.S. gal
4.03 m
7.99 m
14.02 m
3.57 m
345/373 kW
198/211 kW
51 963 kg
18.3 m3
26 m3
37 013 kg
59%
41%
50%
50%
C18 ACERT
C9 ACERT
1800
2000
18.1 L
1105 in3
8.8 L
538 in3
53 km/h
33 mph
12.2 m
40'1"
37.25R35★★E3
37.25R35★★E3
3.51 m
11'6"
437 mm
17"
480 mm
18.9"
—
1268 L
335 U.S. gal
13'2"
26'2"
45'10"
11'7"
4.18 m
8.77 m
14.71 m
3.94 m
2.29 m
2.28 m
7'5"
7'4"
3.63 m
2.46 m
2.46 m
42 168 kg
15.58 m
92,980 lb
51'1"
54 057 kg
16.64 m
—
657G
462/500 hp
266/283 hp
114,559 lb
24 yd3
34 yd3
81,600 lb
**
*
421/447 kW
306/337 kW
68 384 kg
24.5 m3
33.6 m3
47 174 kg
564/600 hp
410/451 hp
150,760 lb
32 yd3
44 yd3
104,000 lb
58%
42%
50%
50%
C18 ACERT
C15 ACERT
1800
1800
18.1 L
1105 in3
15.2 L
928 in3
53 km/h
33 mph
14.2 m
46'7"
40.5/75R39★★E3
40.5/75R39★★E3
3.85 m
12'8"
440 mm
17.3"
660 mm
26"
—
1597 L
424 U.S. gal
13'9"
28'9"
48'3"
12'11"
4.62 m
9.96 m
16.2 m
4.35 m
11'11"
8'1"
8'1"
3.91 m
2.81 m
2.63 m
119,175 lb
54'7"
72 804 kg
18.01 m
15'2"
32'8"
53'1"
14'4"
**
12'10"
9'3"
8'8"
160,505 lb
59'1"
59%
60%
58%
41%
50%
40%
51%
42%
51%
50%
49%
49%
◀ Operating weight includes standard machine, coolant, lubricants, full fuel tank, and operator. Operating weights for the 627K are based on Tier 4 Final/
Stage IV platforms machines. Deduct 413 kg (910 lb) for the operating weight for the 627K Tier 2 equivalent.
24-4
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●
Specifications
Twin Engine Open Bowl
Twin Engine Open Bowl
The Open Bowl Wheel Tractor-Scraper is available as a self-loading, push-loaded, or push-pulled hauling system
with a broad material appetite. The broad material appetite allows the Open Bowl Wheel Tractor-Scraper to be used in
general construction, heavy construction, mining, and waste applications.
Open Bowl Advantages:
● Quick load/unload
● Spread evenly on-the-go
● Broad material appetite
● High Production
● Varying material conditions
● High production
Twin Engine Advantages
(Compared to Single Engine):
● More power for loading, traveling up grades, or over
fill area
● Faster cycle times
● High rolling resistance applications
● Variable site conditions
● Poor underfoot conditions
● Steep grades
● Can be self-loaded, push loaded with the aid of a
Track-Type Tractor, or push-pulled
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Specifications
● Coal Bowl
MODEL
Flywheel Power: Tractor
Flywheel Power: Scraper
Approx. Operating Weight (Empty)
Rated Load
Approx. Operating Weight (Loaded)
Top Speed (Loaded)
GENERAL DIMENSIONS:
Wheelbase
Overall Length
Overall Width
Shipping Width
637G
657G
345/373 kW
198/211 kW
54 050 kg
31 m3
38 m3
34 473 kg
88 409 kg
53 km/h
13.7 m
462/500 hp
266/283 hp
118,909 lb
41 yd3
50 yd3
76,000 lb
194,909 lb
33 mph
44'10"
421/447 kW
306/337 kW
72 190 kg
45 m3
56 m3
49 895 kg
121 933 kg
53 km/h
15.6 m
564/600 hp
410/451 hp
158,817 lb
59 yd3
73 yd3
110,000 lb
268,817 lb
33 mph
51'3"
4.18 m
9.53 m
15.47 m
3.94 m
13'9"
31'3"
50'9"
12'11"
4.62 m
11.01 m
17.21 m
4.35 m
15'2"
36'1"
56'5"
14'4"
11'11"
8'1"
8'1"
3.91 m
2.81 m
2.63 m
3.63 m
2.46 m
2.46 m
**
*
**
12'10"
9'3"
8'8"
◀ Operating weight includes standard machine, coolant, lubricants, full fuel tank, and operator.
Coal Bowl
Coal Bowl Wheel Tractor-Scrapers are typically used for building and maintaining coal stockpiles and hauling coal to
the supply system at coal power plants. The self-loading capability, large capacity, coal pile compaction, and high
speed of Coal Bowl Wheel Tractor-Scrapers make them the tool of choice for moving coal both short and long distances. Coal Bowl Wheel Tractor-Scrapers are available in the 637G and 657G tandem engine models.
Coal Bowl Advantages:
● Load hoppers
● Manage coal stockpiles
● Compaction reduces risk of spontaneous combustion
in coal stockpile
● Exclusively designed large capacity coal bowls
Notes:
● The 637G Coal Scraper is 736 mm (29.0") longer, the
bowl sides are 476 mm (18.7") taller, and the apron is
499 mm (19.6") taller than its earthmoving counterpart.
● The 657G Coal Scraper is 1072 mm (42.2") longer, the
bowl sides are 1010 mm (39.8") taller, the apron is
677 mm (26.7") taller, and the ejector is 944 mm (37.2")
taller than its earthmoving counterpart.
24-6
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Ground Engaging Tools
● Router Bits
● Cutting Edges
WHEEL TRACTOR-SCRAPER
GROUND ENGAGING TOOLS
ROUTER BITS
Cat® router bits help prevent wear and costly damage to the scraper bowl. All router bits are forged
DH-2 steel and through-hardened to prevent breakage and prolong life.
CUTTING EDGES
Cat cutting edges are rolled from DH-2 steel and
through-hardened for strength and wear resistance and
are available in standard, abrasion resistant material
(ARM), and serrated versions.
24
Standard Router Bit
● Available for all models.
Standard center and end-cutting edges
● For use on all scraper models (open bowl, auger and
elevating scraper).
Heavy Duty Router Bit
● 45% more wear material than the standard router
bits.
●
Used in low-to-medium abrasion and low-to-high
impact conditions.
●
Available in various thicknesses and sizes for both
stinger and level-cut arrangements.
●
Can be reversed or propellered for prolonged edge
use and improved cost per hour.
ARM Router Bit
● Available for virtually all models in high abra sion,
low impact applications.
Level Router Bit
● Used for clean-up work and keeps material in front
of the cutting edges.
ARM center and end cutting edges
● For use on all scraper models (open bowl, auger and
elevating scraper).
●
Used in medium-to-high abrasion and low-to-high
impact conditions.
●
●
Can be reversed or propellered for prolonged edge
use and improved cost per hour.
Edition 44
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● Cutting Edges
● Bowl Side Protectors
ARM serrated center cutting edge
● For use on 620, 630 and 650 Series Scraper (open
bowl, auger and elevating scraper).
Special serrated cutting edges
● For site-specific applications and conditions.
●
Used in medium-to-high abrasion and medium-tohigh impact conditions where increased penetration
and aggressive digging action is required.
●
Use on 620, 630 and 650 Series Scraper (open bowl,
auger and elevating scraper).
●
●
Custom-designed edges have sharp teeth for lowto-medium abrasion and low-to-medium impact
conditions.
●
Edges can be reversed or propellered around for
prolonged edge use and improved cost per hour.
Integrated tooth center cutting edge
● For use on 623 and 633 Elevating Scraper, and
620 Series Auger Scraper.
●
Used in low-to-high abrasion conditions for improved
penetration in medium-to-high impact conditions.
●
Include cast-in-place adapters, which accept pin-on tips.
BOWL SIDE PROTECTORS
●
Bowl Side protectors are available in two styles: Bolt
on bowl side protectors and pin on bowl side
protectors.
●
Bolt on style takes a weld on adapter plate that
accepts the bolt on bowl side protector. This is
available for 620, 630 and 650 Series scrapers.
●
Pin on style takes a weld on adapter plate that
accepts the pin on bowl side protector. This is available for 620, 630 and 650 Series scrapers.
Bolt-on adapters
● For use on Elevating Scraper 613, 615, 623 and 633.
●
Used in low-to-high abrasion conditions and lowto-medium impact conditions when improved penetration is needed.
●
Bolt-on adapters accept pin-on tips.
24-8
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● Elevating Scraper
● Auger
ELEVATING SCRAPER
Standard auger shoe
● For use in low-to-medium abrasion and low-tohigh impact conditions where accelerated wear is
not a problem.
24
●
Flight assemblies.
●
Chain assemblies.*
●
Sprockets.*
●
Idlers and idler groups.
●
Rollers and roller groups.
*Optional heavy-duty chain and sprocket for 623G available through your
Cat dealer.
Tungsten carbide auger shoe
● For use in medium-to-high abrasion and mediumto-high impact conditions where accelerated wear
is a problem.
In today’s competitive environment, machines
must operate efficiently. Inspections identify problems that cause machines to burn more fuel and
shorten component life.
AUGER
Auger cutting edge
● For use in low-to-high abrasion and low-to-high
impact conditions.
Plastic liners
● For use in low-to-high abrasion, plastic liners prevent sticky material from building up on the auger.
Steel wear plates
● For use in medium-to-high abrasion and medium-tohigh impact conditions to protect the auger surface.
Edition 44
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Material
Application Guide
Decomposed Granite/Soil
Elevator
● Material Application Guide
● Push-Load TTT Match
Self-Load Push-Load
Single and Single and
Tandem
Tandem
Engine
Engine
Push Pull
Decomposed Granite
(Ripped)
Auger
Tandem
Engine
Coal Bowl Remarks
Excellent loading
Moist Top Soil
Excellent loading by pushloading or push-pull to
reduce cutting of tires
Good to Excellent Loading
Top Soil
Excellent for WTS
Clay/Sand Mixture
Excellent for WTS
Sand
Good to Excellent loading,
but some cases may need
to be push loaded by a
TTT or Push-Pull
Excellent WTS material:
lower portion may require
ripping depending on
material density
Excellent for WTS: ripping
may be required in dense
material
In natural state, not
suitable for WTS
Not suitable for WTS
For WTS to be productive
in sandstone, material
needs to be ripped. In
some cases where density
is high, WTS would not be
a good fit
Below 610 mm (24") good
for WTS when push-loaded
by a TTT to reduce cutting
of tires
Excellent for WTS: ripping
may be required in dense
material
Excellent WTS material
provided rock size does not
exceed 610 mm (24")
Excellent WTS material,
ripping will decrease
load times
Excellent WTS material
provided rock size does not
exceed 610 mm (24")
Antigo
Coal
Limestone
Granite
Sandstone
Shot Rock
Loess Overtill (Banked)
Loess Overtill (Ripped)
Aridisols
Glacial Outwash/River
Rock
FOR MORE INFORMATION ON WHEEL TRACTOR-SCRAPER MATERIAL APPLICATIONS REFERENCE PUBLICATION AEXQ0442.
Push-Load TTT Match
D8
D9
D10
D11
621
627
631
637
657
24-10
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Tire Specifications
MODEL
TIRE SIZE
621K
623K
PLY RATING/
STAR RATING*
TYPE
★★
E-3
33.25R29◀
★★
E-3
33.25-29
32
E-3
★★
E-3
627K
33.25R29◀
MODEL
TIRE SIZE
PLY RATING/
STAR RATING*
TYPE
★★
E-3
★★
E-3
631G
637G
37.25R35◀
657G
40.5/75R39◀
* Manufacturer uses star (★) rating system instead of ply rating.
◀ Recommended tire.
24
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Cushion Hitch
Wheel Tractor-Scraper Anatomy
CUSHION HITCH
●
●
Cushion Hitch dampens shocks to provide a smoother ride
Nitrogen over oil accumulators absorb and dampen road shock
1. Load Cylinder
2. Hitch Castings
3. Scraper Gooseneck
4. Nitrogen Accumulators
5. Orifice
6. Oil from Tractor Hydraulic System
7. Leveling Valve
8. Free-Floating Pistons
WHEEL TRACTOR-SCRAPER ANATOMY
Steering Cylinders
Cushion Hitch
Banana Link
Bowl Lift Cylinders
Gooseneck
Fuel Tank
Overflow Guard
Push/Pull Bail
Ejector
Push/Pull Hook
Cushion Push Plate
24-12
Apron
Router Bit
Cutting Edge
Bowl
Draft Arms
Push Block
Edition 44
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Rimpull-Speed-Gradeability Curves
● Example
USE OF RIMPULL-SPEEDGRADEABILITY CURVES
The following explanation applies to Rimpull-SpeedGradeability curves for Wheel Tractor-Scrapers, Construction & Mining Trucks/Tractors and Articulated Trucks.
Maximum speed attainable, gear range and available
rimpull can be determined from curves on the following
pages when machine weight and total effective grade
(or total resistance) are known.
Rimpull is the force (in kg, lb or kN) available between
the tire and the ground to propel the machine (limited
by traction).
Weight is defined as Gross Machine Weight (kg or lb)
= Machine + Payload.
Total Effective Grade (or Total Resistance) is grade
resistance plus rolling resistance expressed as percent
grade.
Grade is measured or estimated.
Rolling resistance is estimated (see Tables section for
typical values.)
10 kg/metric ton (20 lb/U.S. ton) = 1% adverse grade.
Example
With a 6% grade and a rolling resistance of 40 kg/
metric ton (80 lb/U.S. ton), find total resistance.
Rolling resistance = 40 kg/t ÷ 10 = 4% Effective Grade
(English: 80 lb ÷ 20 = 4%)
Total resistance = 4% rolling + 6% grade = 10%
Altitude Derating
Rimpull force and speed must be derated for altitude similar to flywheel horsepower. The percentage
loss in rimpull force approximately corresponds to the
percentage loss in flywheel horsepower. See Tables
Section for altitude derations.
Rimpull-Speed-Gradeability
To determine gradeability performance: Read from
gross weight down to the % of total resistance. (Total
resistance equals actual % grade plus 1% for each
10 kg/metric ton (20 lb./U.S. ton) of rolling resistance.)
From this weight-resistance point, read horizontally to
the curve with the highest obtainable speed range, then
down to the maximum speed. Usable rimpull depends
upon traction and weight on drive wheels.
Example problem:
A 631G with an estimated payload of 37 013 kg
(81,600 lb) is operating on a total effective grade of
10%. Find the available rimpull and maximum attainable speed.
Empty weight payload = Gross Weight
47 628 kg + 37 013 kg = 84 641 kg
(105,002 lb + 81,600 lb = 186,602 lb)
Solution: Using graph on the next page, read from
84 641 kg (186,602 lb) (point A) on top of gross weight
scale down the line to the intersection of the 10% total
resistance line (point B).
Go across horizontally from B to the Rimpull Scale
on the left (point D). This gives the required rimpull:
7756 kg (17,100 lb).
Where the line cuts the speed curve (point C), read
down vertically (point E) to obtain the maximum speed
attainable for the 10% effective grade: 12.9 km/h (8 mph).
ANSWER: The machine will climb the 10% effective
grade at a maximum speed of 12.9 km/h (8 mph) in
4th gear. Available rimpull is 7756 kg (17,100 lb).
● ● ●
Edition 44
24
24-13
12/20/13 9:09 AM
Rimpull-Speed-Gradeability Curves
● Example
GROSS WEIGHT
lb x 1000
kg x
1000
TOTAL RESISTANCE
(Grade plus Rolling)
kg x 1000
RIMPULL
lb x
1000
km/h
mph
SPEED
24-14
KEY
KEY
1 — 1st Gear Torque Converter Drive
2 — 2nd Gear Torque Converter Drive
3 — 3rd Gear Direct Drive
4 — 4th Gear Direct Drive
A — Loaded 84 641 kg (186,602 lb)
B — Intersection with 10% total resistance line
C — Intersection with rimpull curve (4th gear)
D — Required rimpull 7756 kg (17,100 lb)
E — Speed 12.9 km/h (8 mph)
Edition 44
12/20/13 9:09 AM
Typical Fixed Times
Retarder Curves
TYPICAL FIXED TIMES FOR SCRAPERS
(Times may vary depending on job conditions)
Load Time
(Min.)
Maneuver and
Spread or
Maneuver and
Dump (Min.)
Self
0.9
0.7
Self
0.9
0.7
621K
One D8
0.5
0.7
627K
One D8
0.5
0.6
621K
One D9
0.4
0.7
627K
One D9
0.4
0.6
627K/PP
Self
0.9*
0.6
631G
One D9
0.6
0.7
637G
One D9
0.6
0.6
631G
One D10
0.5
0.7
637G
One D10
0.5
0.6
637G/PP
Self
1.0*
0.6
657G
One D11
0.6
0.6
657G
Push Pull
Self
1.1*
0.6
627G
Auger
0.7
0.7
637G
Auger
0.8
0.7
637G
Coal
0.8
0.7
657G
Auger
1.0
0.6
657G
Coal
0.8
0.6
Model
Loaded By
613G
623K
*Load time per pair, including transfer time.
NOTE: Empty Weights shown on the Wheel TractorScraper charts includes ROPS Canopy. The
travel times will remain within acceptable limits
when applied to a non-ROPS equipped machine.
When calculating TMPH loadings any additional weight must be considered in establishing
mean tire loads.
USE OF RETARDER CURVES
The following explanation applies to retarder curves for
Wheel Tractor-Scrapers and Articulated Trucks.
The speed that can be maintained (without use of
service brake) when the machine is descending a grade
with retarder fully on can be determined from the
retarder curves in this section if gross machine weight
and total effective grade are known.
Total Effective Grade (or Total Resistance) is grade
assistance minus rolling resistance.
10 kg/metric ton (20 lb/U.S. ton) = 1% adverse grade.
24
Example
15% favorable grade with 5% rolling resistance. Find
Total Effective Grade.
Total Effective Grade = 15% Grade Assistance —
5%
Rolling Resistance = 10% Total Effective Grade
Assistance.
Example problem:
A 651E with an estimated payload of 47 175 kg
(104,000 lb) descends a 10% total effective grade.
Find constant speed and gear range with maximum
retarder effort. Find travel time if the slope is 610 m
(2000 ft) long.
Empty Weight + Payload = Gross Weight
= 60 950 kg + 47 175 kg = 108 125 kg
(134,370 lb + 104,000 lb = 238,370 lb)
Edition 44
24-15
12/20/13 9:09 AM
Retarder Curves
● Example
Solution: Using the retarder curve below, read from
108 125 kg (238,370 lb) (point A) on top of gross weight
scale down the line to the intersection of the 10%
effective grade line (point B).
Go across horizontally from point B to the intersection of the retarder curve (point C). Point C intersects at the 5 (5th gear) range.
Where point C intersects the retarder curve, read
down vertically to point D on the bottom scale to
obtain the constant speed: 21.7 km/h (13.5 mph).
GROSS WEIGHT
ANSWER: The 651E will descend the slope at
21.7 km/h (13.5 mph) in 5th gear. Travel time is
1.68 minutes.
610 m
__________
= 1.68 min
363 m/min
*(mph × 88 = F.P.M.)
2000 ft
_______________
= 1.68 min
13.5 mph × 88*
NOTE: The basic Distance-Speed-Time formula is
60 D ÷ S = T (or “60 D Street”), where 60 is
minutes, D is distance, S is speed and T is time.
In the above problem, 60 × 610 m ÷ 21.7 km/h
× 1000 = T.
60 × 610
____________
= T = (1.68)
21.7 × 1000
lb x 1000
EFFECTIVE GRADE
(Grade minus Rolling Resistance)
kg x 1000
km/h
mph
SPEED
24-16
KEY
KEY
A — Loaded 108 125 kg (238,370 lb)
B — Intersection with 10% effective grade line
C — Intersection with retarder curve (5th gear)
D — Constant speed 21.7 km/h (13.5 mph)
Edition 44
12/20/13 9:09 AM
621K Rimpull-Speed-Gradeability
● 33.25R29 Tires
STANDARD ARRANGEMENT*
GROSS WEIGHT
100
45
90
40
80
RIMPULL
70
20
40
10
60
20
80
100
30
40
120
50
140
60
E
lb x 1000
160
80 kg x 1000
70
L
TOTAL RESISTANCE
110
kg x 0
1000
0
50
lb x
1000
35
1
30
60
25
50
40
30
20
10
30%
20
25%
15
2
10
20%
3
4
5
0
0
5
10
5
15%
10%
5
15
24
6
20
10
7
25
15
8
30
35
20
5%
40
25
45
50
30
55
km/h
mph
SPEED
*at sea level
KEY
KEY
E — Empty 36 185 kg (79,787 lb)
L — Loaded 62 312 kg (137,397 lb)
Edition 44
24-17
12/20/13 9:09 AM
621K Retarding
● 33.25R29 Tires
GROSS WEIGHT
0
20
0
40
10
60
20
80
30
100
40
110
50
120
60
80 kg x 1000
70
30%
L
E
lb x 1000
160
20%
15%
Compression Braking Level
3
4
10%
5
high
medium
6
low
0
0
5%
7
5
10
5
15
10
20
25
15
30
35
20
40
25
8
45
50
30
EFFECTIVE GRADE
25%
60 km/h
55
35
mph
SPEED
*at sea level
24-18
KEY
KEY
E — Empty 36 185 kg (79,787 lb)
L — Loaded 62 312 kg (137,397 lb)
Edition 44
12/20/13 9:09 AM
● 33.25R29 Tires
GROSS WEIGHT
100
45
90
40
80
RIMPULL
0
kg x
1000 0
50
70
60
50
40
30
20
10
20
40
10
60
20
80
30
100
40
120
50
140
160
60
E
lb x 1000
70
80 kg x 1000
L
35
1
30
25
30%
20
25%
15
2
10
3
5
0
0
5
10
5
20%
4
15%
5
15
10
24
10%
6
20
TOTAL RESISTANCE
lb x
1000
110
7
25
15
8
30
35
20
5%
40
25
45
50
30
55 km/h
mph
SPEED
KEY
KEY
E — Empty 39 937 kg (88,061 lb)
L — Loaded 64 975 kg (143,261 lb)
Edition 44
24-19
12/20/13 9:09 AM
623K Retarding
● 33.25R29 Tires
GROSS WEIGHT
20
0
40
10
60
20
80
100
30
40
120
50
140
160
60
70
L
E
lb x 1000
80 kg x 1000
30%
25%
20%
15%
3
4
10%
5
high
6
medium
low
0
0
7
5
10
5
15
10
20
25
15
30
35
20
40
25
5%
8
45
50
30
55
35
EFFECTIVE GRADE
0
60 km/h
mph
SPEED
24-20
KEY
KEY
E — Empty 39 937 kg (88,061 lb)
L — Loaded 64 975 kg (143,261 lb)
Edition 44
12/20/13 9:09 AM
● 33.25R29 Tires
STANDARD ARRANGEMENT*
GROSS WEIGHT
120
55
110
50
100
45
90
40
80
35
70
60
50
40
30
20
40
10
60
20
80
30
100
40
120
50
140
60
160
70
80 kg x 1000
L
E
1
30
25
2
20
3
15
20
10
10
5
0
0
5
10
5
4
5
15
30%
25%
20%
15%
6
20
10
25
7
30
15
lb x 1000
20
40
25
24
10%
5%
8
35
TOTAL RESISTANCE
RIMPULL
lb x kg x 0
1000 1000
0
70
150
65
140
60
130
45
50
30
55 km/h
mph
SPEED
*at sea level
KEY
KEY
E — Empty 40 913 kg (90,213 lb)
L — Loaded 67 040 kg (147,823 lb)
Edition 44
24-21
12/20/13 9:09 AM
627K Retarding
● 33.25R29 Tires
GROSS WEIGHT
20
0
40
10
60
20
80
30
100
40
120
50
140
lb x 1000
160
60
70
80 kg x 1000
L 30%
E
25%
3
20%
4
15%
high
medium
5
10%
6
low
7
8
5%
0
0
5
10
5
15
10
20
25
15
30
35
20
40
25
45
50
30
55
35
EFFECTIVE GRADE
0
60 km/h
mph
SPEED
*at sea level
24-22
KEY
KEY
E — Empty 40 913 kg (90,213 lb)
L — Loaded 67 040 kg (147,823 lb)
Edition 44
12/20/13 9:09 AM
631G Rimpull-Speed-Gradeability
● 37.25R35 Tires
GROSS WEIGHT
15
kg x
1000
lb x
1000
65
55
45
150
120
100
50
40
15
30
10
8
40 50 60
2
1
90
kg x 1000
80 100 120 160 200
lb x 1000
L
1
30%
25%
20%
2
15%
12%
10%
8%
3
20
4
15
5
6
4
40 50 60 70
E
70
25
20
30
6%
5%
4%
6
10
7
8
5
24
TOTAL RESISTANCE
RIMPULL
35
30
20
3%
2%
2
0
0
5
10
15
20
25
30
35
5 10 15 20 25 30 35 40 45 50 55
mph
km/h
SPEED
KEY
KEY
E — Empty 47 628 kg (105,002 lb)
L — Loaded 84 641 kg (186,602 lb)
Edition 44
24-23
12/20/13 9:09 AM
631G Retarding
● 37.25R35 Tires
GROSS WEIGHT
30
55
40
50
75
60
100
70
125
150
80
kg x 1000
175
lb x 1000
30%
E
3
L
16%
4
5
10%
6
7
5%
8
EFFECTIVE GRADE
22%
1%
0
0
5
5
10
10
15
15
20
20
25
30
35
25
40
30
45
50
35
55
mph
60
km/h
SPEED
24-24
KEY
KEY
E — Empty 47 628 kg (105,002 lb)
L — Loaded 84 641 kg (186,602 lb)
Edition 44
12/20/13 9:09 AM
● 37.25R35 Tires
GROSS WEIGHT
lb x
1000
65
55
45
150
120
100
RIMPULL
35
50
40
15
30
10
8
30
40 50 60
90
kg x 1000
80 100 120 160 200
E
lb x 1000
L
2
30%
25%
20%
3
15%
12%
10%
8%
4
5
20
6
15
6
4
40 50 60 70
1
70
25
20
30
20
7
10
6%
5%
4%
8
24
TOTAL RESISTANCE
15
kg x
1000
3%
2
1
5
2%
2
0
0
5
10
15
20
25
30
35
5 10 15 20 25 30 35 40 45 50 55
mph
km/h
SPEED
KEY
KEY
E — Empty 54 057 kg (119,175 lb)
L — Loaded 91 070 kg (200,775 lb)
Edition 44
24-25
12/20/13 9:09 AM
637G Retarding
● 37.25R35 Tires
GROSS WEIGHT
35
50
55
100
75
95
150
115
200
250
135
kg x 1000
300
lb x 1000
E
25%
L
20%
3
15%
4
10%
5
6
7
5%
8
EFFECTIVE GRADE
30%
1%
0
0
5
5
10
10
15
15
20
20
25
30
35
25
40
30
45
50
35
55
mph
60
km/h
SPEED
24-26
KEY
KEY
E — Empty 54 057 kg (119,175 lb)
L — Loaded 91 070 kg (200,775 lb)
Edition 44
12/20/13 9:09 AM
● 37.25/R35 Tires
GROSS WEIGHT*
0
kg x
1000
lb x
1000
110
240
100
220
90
200
80
180
60
0
40
50
60
100
80
150
100
200
120
250
E
140
300
lb x 1000
L
24
1
160
140
40%
120
50
35%
30%
25%
100
40
80
30
kg x 1000
TOTAL RESISTANCE
RIMPULL
70
20
2
60
20
40
10
20
0
0
3
20%
15%
4
5 6
0
5
0
10
10
15
20
10%
7
20
30
8
25
40
5%
30
50
35
mph
60
km/h
SPEED
*at sea level
KEY
KEY
E — Empty 72 804 kg (160,505 lb)
L — Loaded 119 978 kg (264,505 lb)
Edition 44
24-27
12/20/13 9:09 AM
657G Retarding
● 37.25/R35 Tires
GROSS WEIGHT*
0
15
30
45
60
75
90
105
120
135
kg x 1000
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300
lb x 1000
E
25%
L
3
20%
4
15%
5
10%
6
7
5%
8
EFFECTIVE GRADE
40% 35% 30%
1%
0
0
5
5
10
10
15
15
20
25
20
30
25
35
40
30
45
50
mph
km/h
SPEED
*at sea level
24-28
KEY
KEY
E — Empty 72 804 kg (160,505 lb)
L — Loaded 119 978 kg (264,505 lb)
Edition 44
12/20/13 9:09 AM

Caterpillar Performance Handbook

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