to Martindale Commutator Grinders (6.3M / PDF)

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. Miniature & CompactModels
. Grinding & Turning Models
" Chain-DriveModels
" Power Drives
d
MEMBER
@
i',.,14ni
iiiD;1LH .p0Box430.Ctevetand,
oH44107
.FaxLocal521-9476
(216)521-8567
(800)344-9191
Phone
/ USA&Canada
E-Mail
: sales@martindaleco.com
WebSite: www.martindaleco.com
&ffirilmilmAtffi
Over90 Yearsof Service.
tool
MartindaleElectricCo. startedin the electricmot,ormaintenance
manufacturing
businessin 1913.Fromthe star( we put emphasison
- and on dedicatedcustomerserqualitymaterialsand workmanship
vice.
for
Martindale
in the manufacture
of equipment
andsupplies
specializes
pagesarethe
Theproducts
on the following
the electricmotorrepairman.
in an effortto helpindusresultof continuous
fieldexperience
andresearch
motorsandgenerators.
try minimize
thecostsof maintaining
electric
grinding
lineof commutator
Thefollowing
ourcomplete
9 pagesdescribe
resurfacing
toolare:
factorsin choosing
tools.Thethreesalient
a commutator
to grinding
1. Commutator
barlength(orwidthof slipring)matched
capacityof tool.
2. Accessarcamatched
to dimensions
of toolto ensureworkingclearance.
to fit diameter
of supportusedwithtool.
3. Diameter
of brushstudmatched
Youwillneedto orderstonesto workwithappropriate
surfacecondition.
for use on copper& brass,slip ringgrade
Standard
stonesare available
for useon steel& castiron.Seeour DiamondD
stonesare alsoavailable
Abrasives
of sizes,grades,etc.
Catalogfor a complete
explanation
Pleaseadvisequantity,
catalognumbersof grindingtools,supportswithlengthof baserequired,
andquantity& gradesof stonesneededfor
pricesandavailability.
We appreciate
the opportunity
to be of serviceand
lookforwardto meetlngall of yourelectricmotorrepairtool needs.
MAHTINDALE .POBox
430.Cleveland,
OH44107
.FaxLocal521-9476
(800)344-9191
Phone(216)521-8567
/ USA& Canada
E-Mail
: sales@martindaleco.com
WebSite:www.martindaleco.com
GRINDERSCONTENTS
COMMUTATOR
PageNo.
... 4
. T Y P EC
GrindingCapacity:up to 4-314"long
W. x 3-3/4"H. x 7-118"H. withsupport(s)
Dimensions:
3-5/8"L.x 4-314"
'Comm-Pact
....5
grindfrom6" to 14"long
4 baselengths,
Grinding
Capacity:
support(s)
Dimensions:
6",8u,10"
of 12"L.x7" W. x 3-3/4"H. + required
'Miniature
......5
GrindingCapacity:up to 3-3/4"long
L. x 2-9116"
H. + requiredsupport(s)
Dimensions:2-318"
,/
'Chain-Drive
.... I
GrindingCapacity:10 baselengths,grindfrom6" to 25-112"long
H. +
Dimensions:
5-112"lo 24" L. x 5" W. withouthandleor knobx 4-314"
required
support(s)
' CommutatorGrindingand TurningTools
'Straight
6
GrindingCapacity:baselengthsfrom6" to 48",grindfrom6" to 50" long
handlex3-314"W. + 4-518"
handlex7" H.
Dimensions:
6" to 48" L. + 8-112"
+ requiredsupport(s)
'Right-Angle
.... 6
GrindingCapacity:baselengthsfrom6" to 48",grindfrom6" to 50" long
L. x 3-3/4"W. + 9" handlex7" H. + required
Dimensions:7-314"
lo 49-314"
support(s)
'Accessories
... 6
' Supports
...... 7
. Power-Drive(Eliminates
...... 7
the needfor handcranking)
MARTINDALE .POBox
430.Cleveland.
oH44107
.FaxLocal
(216)
(800)
/ USA
344-9191
Phone
521-8567
521-9476
&Canada
E-Mail
: sales@martindaleco.com
WebSite: www.martindaleco.com
4
lypeC Commstone
Holder
- VERSATILE
COMPACT
Part"A" of adjustablesupportcan
be separatedfrom part "B" (at
hinged center) and Commstone
Holder base mounted directly on
part"B".
Splitfiber bushingsin the clamp
reducethe hole from 1" to 3/8" in
1/8"steps.
Adjustable
Support
(mustbeordered
separately)
Features:
. Only3-5/8"long;fitsin closequartered
jobs.
. Flexible
in-feeddeflects
to sidein
quarters.
cramped
. Longor ShortHandlemaybe used
pivotedin anyposition,
. Choiceof 2" Boxor StoneHolder.
Theseareinterchangeable
andboth
maybe ordered.
. Carriage
travelis 1-114",
on "Teflon"
ways.
. Commstones
forusewiththe2" Box(1"
x 2" x 8"),or for usewiththeStone
(1"x1-112"
Holder
x6-112"),
areavailablein allgrades.
. SteelCarrying
Caseis available
with
spacefor commstones,
smalltools,etc.
Handlescan be mounted
at any convenientangle.
TheTypeC Commstone
Holderis a compactgrinderfor slipringsand
commutators
up lo 4-314"
long.This unitis especially
valuablewhenthe
motorframeor brushriggingextendsoverthecommutator
or slipring.
Bestresultsareobtained
whenthearmature
is runningat normalspeed,
in itsownbearings,
withcentrifugal
forceholdingthecommutator
in itstrue
position.
running
Useof a commstone
frequently,
for truingthefaceof a commutator,
will
helpin avoiding
thelongandcostlydelayof disassembly
thatis required
to
turnan armature
in a lathe.
Dimensions
BaseLength:3-5/8" BaseWidth:(without
woodhandlel4-314"
Height:(baseto topof stone-holder
nut)3-3/4"
(part"B"fromcenterof brush-arm
Adjustable
Support:
holeto centerofjoint
part'A')3-3/8"
with
GrindingCapacity
W i t h 2 " b o x a npdc1.1 " x 2 " x 8 " C o m m s t o n e , , . . . . . . . . . . . . . t o 3 - 1 / 4 "
WithStoneHolder
and2 pcs.1"x 1"x 6-1/2"
Commstones,.............to
3-3/4"
WithStoneHolder
and2 pcs.1"x 1-'112"
x6-112"
Commstones........to
4-314"
TypeC Commstone
HolderLessAdjustable
Number
Support: Catalog
WithStoneHolderandlongandshorthandles
COMH100
With2" Boxandlongandshorthandles
...,
. COMH101
(notincluded
Adjustable
Support
withCommstone
Holder).
. . COMH200
StoneHolderonly.
....COMH201
2"Boxonly..
,.COMH202
SteelCarrying
CaseforTypeC Holder
CASE101
NetWeight,
withAdj.Support:
4-114lbs.
TypeC mountedon Auxilliary
Generatorusing only lower
partof adjustablesupport.
for above:
Commstones
1 " x 1 "x 6 - 1 1 2 "
....COMMXLS8461"x1-112"
x6-112"
. COMMXLS847.
1 " x 2 "x 8 " . . .
.....COMMXLS8S0"
*Whenordering,
specifycatalognumberandgrade(i.e.EC,C, M, F,P)
(SeeCommstone
descriptions
in
- pages4,5 &7)
Diamond
D Abrasives
Catalog
o4105
5
"Comm'Pact"
GrindingTool
The"Comm-Pact"
for usein confined
Grinding
toolhasa verylowprofileandis light-weight
spacesandon brush
Available
studsnotheavyenoughto supporttheweightof the largeCommutator
Grinder.
in 6",8", 10",and12"lengths,
eachof whichcangrindupto 2" longerthanits baselength.
Thecarriage
nylonV-blocks
andis drivenby a rackandpinionconnected
to
travelson replaceable
by a universaljoint
a removable
"speed-handle".
3/8"socketsetextensions
canbe usedto lengthen
thedrivehandle.
Standard
Fivedifferent
brackets
including
bushings
for roundbrusharmslrom112"to 1"diameter.
stylemounting
areavailable
Forflatbrusharmsa wedgesupportis ofiered.
U-Supportfor round
brusharms,7/16"to
1-112"
diam. Adds1114"lo height.
CenterSupportfor
roundbrusharms,1"
diam.or less. Adds
1-112"
to height.
: Tm
;::"4#lrnil'.
#
.
Dimensions
L e n g t h : 6 " , 81"0, "o, r 1 2 "
Width:(withknob)7"
Height:(bottomof baseto topof
stone-holder
bolt)3-3/4"
(addheightol required
support- seeaboveright)
Grinding
Capacity:
2" longerthan
baselength
Long"L" Supportfor
6" long
8" long
1 0 "l o n g
1 2 "l o n g
Number
Catalog
.GRDR106
.GRDR108
.GRDR110
.GRDR112
Short"L" Support
for roundbrush
arms,1" diam.or
less. Adds7l8" lo
height.
WedgeSupportfor
flat brusharms.
Adds1-114"
to
height.
Commstones:
1"x 1-112"
x6-112"
(seedescription,
etc.,under'TypeC
Commstone
Holder")
Miniature
GrindingTool
Withthislittlegrinderyoucannowprecision-grind
smallmotorandgenerator
whichwereformerly
commutators
or slip-rings
outof reachbecause
of limited
accessspace. This grinder'ssmallsize permitsentryinto confinedareas
machines.
lt mountson a brushthrough
eitherend-opening
or side-opening
armwithoneof thetwosupports.
lt usestwo3/4"x314"x3" Commstones
and
will grindcommutators
is available
for
up to 3-3/4"long.A flexibleextension
usewiththehandle.
Dimensions
Length:2-318"
Height:2-9116'
Grinding
Capacity:
to 3-3/4"
qF
Right:FlexibleHandle.
AboveLeft:Supportfor Round
BrushArm.AboveRight:
Supportfor SquareBrushArm.
NT
i\rlA RTtruLiil.L [ . POBox
430. Ctevetand,
oH44107
.FaxLocal521-9476
(800)344-9191
Phone(216)521-8567
/ USA& Canada
E-Mail:
martindaleco.com
sales@
WebSite:www.martindaleco.com
6
ahdTurningTools
Martindale
Gii:nd:ing
Commutator
At left:
Turning
ToolHead
Fig.5
Availablein 2 styles in lengths from 6" to 48". Will grind,
with commstones,1" beyond base at each end or turn,
with turning lool,2" less than base length at each end.
At left and at right:
With Grinding Head
$
6*18
.!
-'"'5r""
_ - _ . - * - - _
j .
o'/z'
FIG.l STRAIGHN
Usedwherethereareno obstructions
to interferewith crossfeedhandle.
"
......-.--..---r/
-
'3/4""->
FIG.8 RIGHTANGLE:
Used where end frame,fan, etc., would
interferewith crossleed handleof Fig. 1.
grindingwhileit is turnof the commutator
or slip-ringby precision
The Martindale
Commutator
Grinderassuresconcentricity
forceholdingeachbar in place.
withcentrifugal
ing in its own bearingsat operatingspeedsandtemperatures,
On Fig.1, removetwo screwsand turnthe
Eithertool (Fig.1 or 8) can be quicklychangedfromrightto left handoperation.
cross-slide
around,
housing,andthe grinding
On Fig.8, the right-angle
drivingshaftis removedand insertedin the othersideof the right-angle
headcross-slide
turnedaroundas withFig.1.
Whengrindinguse2" x 2" x S"Commstones
in anyof the 5 gradesshownand describedin DiamondD Catalog- pages4,
5 & 7. Thestoneswillgrind1" beyondthe grinderbaseat eachend,andtheycan be cockedto get intothe cornerat the riser.
withthe Grinding
lf very deepgroovesmustbe removed,the Fig.5 TurningToolHeadmay be used.lt is interchangeable
Headon eitherFig.1 or Fig.8. Thetoolholdershouldbe positioned
as indicatedin the upperleftcornerof thispage.The top
of the commutator
shouldrotateawayfromthe operatorso that if the mountingshouldslip,the toolbit wouldbe pushedaway
to add 4" to the grinderbaselengthwhenusingthe TurningTool.
fromthe commutator
insteadof diggingin. lt is necessary
Number
Catalog
withgrinders
below)
Grinders:(Carrying
Caseincluded
.GRDR300Commutator
Grinding
Tool(Fig.1),w/ 10"baseor less. .
Commutator
Turning
Tool(Fig.1),w/ 10"baseor less,
. .GRDR301.
withFig.5 Headinstead
Head .
of Grinding
.GRDR400Right-Angle
Tool(Fig.8),w/ 10"baseor less. . .
Grinding
Right-Angle
Turning
Tool(Fig.8),w/ 10"baseor less,
. .GRDR401.
withFig.5 Headinstead
Head .
of Grinding
. . . . . . .GRDR666
ForGrinders
10"to 26":addoerinchover10' . . .
(Grinder
prices28"andoveron application.)
*Addbaselengthto P/Nwhenordering
(i.e.:"10",12",etc.)
. . . . . .GRDR501A
..
Power-Drive
andAccessories,
115V.,60 Hz.(SeePage7 forDescription)
B
.....
. . .GRDR501
230V.,50 Hz.(SeePage7 for Description)
.GRDR505
ToolHolder
Turning
ToolHead(Fig.5),including
Supports:
(SeePage7 forDescription)
....GRDR50202
Fig.2"L"Support
..
.......GRDR50206
Fig.6WedB
g el o c(kS e eP a g e T f oDre s c r i p t i.o. .n. ).
(SeePageTfor
....GRDR50209
..
Fig.9"T"Support
Description)
ExtensionHandles(Fig.7):
......GRDR50306
. .)
6 "( S e eP a g e
T f o r D e s c r i p t.i .o. n
......GRDR50310
1 0 " ( S ePea g e T f o r D e s c r i p. t. i. o n )
for above:
Commstones
. . .COMMXLS855..
2" x2" x 8" PlainLatheType
**When
ordering,
specify
cat.no.andgrade(i.e.EC,C, M, F,P)
(SeeCommstonedescriptionsin DiamondD AbrasivesCatalog- pages4, 5 & 7)
See Power-Driveand Supportsfor CommutatorGrinders- Page7
ffi
iiii,ift'l'Ilil]A!,.8 .POBox430.Ctevetand,
oH44107
.FaxLocal521-9476
(800)344-9191
/ USA& Canada
Phone(216)521-8567
E-Mail
: sales@martindaleco.com
WebSite:www.martindaleco.com
Weights:Figs. 1 or 8 with 12" base,
Net 29 lbs.,Shipping38 lbs.;add about
2 lbs. for each additionalinch. PowerDriveunit,Net 27 lbs.,Shipping32 lbs.
Tool
andTurning
Martindale
Grinding
Commutator
7
Power-Drive
Power-Drive
ForEitherStyle
Grinder Reducestediouslabor;
speedsup the job.
SeePage6 for PartNumbers
A variable
speedgear-motor
controlled
by a full-waveSCRcontrolis attached
to eitherFig. 1 or Fig.I grinderby a
positivedrive coupling.A reversing
switch,mountedon the carriage,is
operatedby adjustable
stopsmounted
onthemainbed.Themotorunitmounts
directlyto the bed castingproviding
positive
driveto thecarriage.
Power-Drive
eliminatesthe need
for the operatorto handcrankthe
head back and forth across the
faceof the commutator.
Martindale
ToolSupports
andTurning
Commutator
Grinding
for bushing
TheRoundStudSupports
arebothdrilled1-1/4",andfibrebushings
areprovided
theholein thesupportto
thediameter
alsoserveto insulate
the Grinderwhenusedon livebrushstuds.
of the brushstud.Thebushings
Adjustable
WedgeBlocksusuallycanbe mounted
onthebrusharmsin thesameholesbythesamestudboltsthatfastenthebrushholders.
as shownin the illustration.
SeePage6 for PartNumbers
Fig.7 ExtensionHandle
f.u+"1
=T---------r:
T
3"
I------tr--
Fig.9
..TD
Support
Fig.2
.3Lrt
-_-r.-
in a 6" or 10
Thisextension
canbesupplied
pastbrushrigging
lengthto extendhandwheel
or otherobstruction,
whennecessary.
Support
Fig.6 WedgeBlock
Grinders16" or lessrequire2 supports
Grinders18"to 34" require3 supports
Grinders36" and over require4 supports
holes(3/8"- 16thread)on
Grinderbaseshavemounting
2-114"cenlersacrossthe baseand on 2" centersalong
thebasefor mounting
supports.
tliiA llTi i I iliil L.F . p0 Box480. Ctevetand,
07
oH441
.FaxLocal521-9476
(800)344-9191
/ USA& Canada
Phone(216)521-8567
E-Mail
: sales
@martindaleco.com
WebSite:www.martindaleco.com
I
:Cornmutator:
Tools
Martihdale
Grinding
Chain-Driv€
Ilesignedat the requestof the RailroadIndustry but equallysuitedfor
grindingcommutators
of industrialequipmentup to 26" long.
The Martindale Chain-DriveCommutatorGrinder is a
departurefrom previousdesigns,in that frictionhas been
reducedto a minimum.Grindingdusthas littleeffecton the
operation.
Two or threeiurns of the crankwill movethe carriagefrom
one end of the bed to the other.The operatorcan 'Teel"the
stonecut, and how fast to feed it. This is probablythe quickest and easiestCommutatorGrinderto use.
Crankhandle
can be used
at eitherend
of base.
Length:
5-112"
lo 24"
Width:5"(without
handleor knob)
(baseto topof stone-holder
4-314"
nut)
Height:
holein
Adjustable
3" (fromcenterof brush-arm
Support:
lowerpartto centerofjointwithupperpa
Grinder Sizes
The table below shows stock size Grindersand the
lengthcommutatorbarsthey willgrind.Two commutator
lengthsare given'in each case, as two differentwidth
Commstonescan be used.
* GrindingLengths:
Using:
1"x1-112"x6-112"
| 1"x2"x8"
6"
8"
10-112"
12-112"
14-112"
16-112"
1g-',U2',
20-112"
22-1112"
24-112"
7"
GRDRTOT
9"
11-112" G R D R T l O
13-112" G R D R 7 1 2
14"
15-112" G R D R 7 1 4
16"
17-112" G R D R 7 1 6
19"
19-112" G R D R 7 1 8
20"
21-112" GRDRT2O
23-112"
GRDR722
22"
GRDR724
24"
25-112"
* At least 112"can be added to grindinglengthsby
cockingCommstonesin the stone-holder.
7-112"
10"
't2"
A UniversalAdjustable
Support is available for
mountingon brusharms.
This support is in two
parts, hingedtogether.lt
can be used as illustrated, with the grinder
mountedon the top section and the bottom section adjusted at the
desiredangle; or the top
half can be removedand
the grinder mounted
directlyon the lower part
Grindermountedon TractionMotor
of the support.Split fibre
Catalog
Number
Number
Catalog
Supportsand Accessories:
RDR740
Universal
Adjustable
Support........................G
Wedge81ock..........
..GRDR741
Adjustable
SteelCarrying
Casefor Grinders
under18".CASE102
Casesfor Grinders
over18".CASE103
SteelCarrying
Commstonesfor Above:
1"x 1-112"
x6-112"......
.........COMMXLS847.
...............COMMXLS850.
1 "x 2 " x 8 " . . . . . . . . . . . .
* Whenordering,specifycatalognumberand grade
bushings
reduce
theclampfrom1-1l8"diam.to 3/8"diam.
in 1/8"stepsto makea tightfit on the brushstud.
(i.e.EC,C, M, F,P)
Grinder
mounted
ona
Dieselelectric
Generator.
Net7 lbs.,
Weights,
5-1/2"baseGrinder
complete,
inch.
10lbs.;add112lb.foreachadditional
Shipping
MartindalePlainLatheTypeCommstones
1" x 1-112"
x 6-1/2"and
1" x2" x 8" in both Coarse(C) and Fine(F) gradesare used.
ExtraCoarse(EC)gradecan be usedwherethe commutatoris deeply
grooved.Medium(M) and Polish(P) gradesare also available.
MARTII{ DA!-F . POBox
430. Ctevetand.
oH44107
-8567
.
(21
(800)
Phone 6)521
FaxLocal
/ USA
&Canada
344-91
521-9476
91
E-Mail
: sales@martindaleco.com
WebSite:www.martindaleco.com
For mountingon flat
brusharms use Adjustable
WedgeBlockshownin
Figure6, page7. (Use1,
2, ot 3, accordingto length
of base).
Grinders
uploT-112"
baseneed1 support.
Grinders10"to 16"baseneed2 supports.
Grinders18"1o24"baseneed3 supports.