3M 28331 Grinder User Manual


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PARTS LIST FOR PN 28331 & 28346, Extended 18,000 RPM DIE GRINDERS
PartsPage
*Declarednoiselevels;measurementscarriedoutinaccordancewithstandardENISO15744:2002.
**DeclaredvibrationlevelsinaccordancewithEN12096;measurementscarriedoutinaccordancewithstandardENISO8662-13:1997.
IMPORTANTNOTE:Thenoiseandvibrationvaluesstatedinthetablearefromlaboratorytestinginconformitywithstatedcodesandstandardsandarenot
sufcientriskevaluationforallexposurescenarios.Theactualexposurevaluesandamountofriskorharmexperiencedtoanindividualisuniquetoeach
situationanddependsuponthesurroundingenvironment,thewayinwhichtheindividualworks,theparticularmaterialbeingworked,workstationdesign,as
wellasupontheexposuretimeandthephysicalconditionoftheuser.3Mcannotbeheldresponsiblefortheconsequencesofusingdeclaredvaluesinsteadof
actualexposurevaluesforanyindividualriskassessment.
PRIORTOTHEOPERATION
Thetoolisintendedtobeoperatedasahandheldtool.Itisalwaysrecommendedthatwhileusingthetool,operatorsstandonasolidoor,inasecureposition
witharmgripandfooting.Beawarethatthesandercandevelopatorquereaction.SeethesectioninSAFETYPRECAUTIONSin.
Useacleanlubricatedairsupplythatwillgiveameasuredairpressureatthetoolof6.2bar(90psig)whenthetoolisrunningwiththeleverfullydepressed.Itis
recommendedtouseanapproved10mm(3/8in)x8m(25ft)maximumlengthairline.ConnectthetooltotheairsupplyasshowninFigure1.Donotconnect
thetooltotheairlinesystemwithoutaneasilyaccessibleairshutoffvalve.Itisstronglyrecommendedthatanairlter,regulatorandlubricator(FRL)beused
asshowninFigure1asthiswillsupplyclean,lubricatedairatthecorrectpressuretothetool.Inanycaseappropriateairpressureregulatorsshallbeusedat
alltimeswhileoperatingthistoolwherethesupplypressureexceedsthemarkedmaximumofthetool.Detailsofsuchequipmentcanbeobtainedforyourtool
distributor.Ifsuchequipmentisnotused,thetoolshouldbemanuallylubricated.Tomanuallylubricatethetool,disconnecttheairlineandput2to3dropsof
suitablepneumaticmotorlubricatingoilsuchas3M™AirToolLubricantPN20451,FujiKosanFK-20orMobilALMO525intothehoseend(inlet)ofthetool.
Reconnecttooltotheairsupplyandruntoolslowlyforafewsecondstoallowairtocirculatetheoil.Ifthetoolisusedfrequently,lubricateitonadailybasisor
lubricateitifthetoolstartstosloworlosepower.Itisrecommendedthattheairpressureatthetoolbe6.2bar(90psig)whilethetoolisrunningsothemaximum
RPMisnotexceeded.Thetoolcanberunatlowerpressuresbutshouldneverberunhigherthan6.2bar(90psig).Ifrunatlowerpressuretheperformanceofthe
toolisreduced.
ProductConguration/Specications
Operating/MaintenanceInstructions
Model Number Collet Speed RPM
Product Net
Wt kg
(lb)
Height
mm (in)
Length mm
(in)
*Noise Lever
dBA Pressure
(Power)
**Vibration
Level m/s
2
(ft/s
2
)
**Uncertainty
K m/s
2
20237
25126
1/4in
6mm
20,000
0.77(1.69)
0.77(1.69)
76.2(3)
76.2(3)
196(7.5)
196(7.5)
83.5(95.1)
83.5(95.1)
<2.5(<8.2)
<2.5(<8.2)
NA
NA
20238
25127
1/4in
6mm
18,000
0.77(1.69)
0.77(1.69)
76.2(3)
76.2(3)
196(7.5)
196(7.5)
83.5(95.1)
83.5(95.1)
<2.5(<8.2)
<2.5(<8.2)
NA
NA
20239
25128
1/4in
6mm
12,000
0.93(2.06)
0.93(2.06)
81.2(3.2)
81.2(3.2)
254(10)
254(10)
83.5(95.1)
83.5(95.1)
3.62(11.9)
3.62(11.9)
1.81
1.81
20240
25129
1/4in
6mm
8,000
0.93(2.06)
0.93(2.06)
81.2(3.2)
76.2(3.2)
254(10)
254(10)
83.5(95.1)
83.5(95.1)
3.62(11.9)
3.62(11.9)
1.81
1.81
28332
28347
1/4in
6mm
4,000
0.717(1.58)
0.717(1.58)
69.9(2.75)
69.9(2.75)
200(8.875)
200(8.875)
87.0(98.6)
87.0(98.6)
5.52
5.52
0.732
0.732
28330
28345
1/4in
6mm
18,000
0.512(1.13)
0.512(1.13)
69.9(2.75)
69.9(2.75)
174.6(6.875)
174.6(6.875)
87.0(98.6)
83.5(95.1)
1.91
1.91
NA
NA
28331
28346
1/4in
6mm
18,000
0.697(1.54)
0.697(1.54)
69.9(2.75)
69.9(2.75)
269.9(10.625)
269.9(10.625)
87.0(98.6)
87.0(98.6)
2.53
2.53
0.295
0.295
RecommendedAirline
Size-Minimum
10mm3/8in
RecommendedMaximumHoseLength
8meters25feet
AirPressure
MaximumWorkingPressure6.2bar90psig
RecommendedMinimumN/AN/A
Fig. 3M PN Description
1 06572 ColletNut
2 06575 Collet(1/4in)
2 06573 Collet(1/8in)
2 06574 Collet(3/16in)
2 06545 Collet(3/8in)
2 06576 Collet(3mm)
2 06577 Collet(6mm)
2 06546 Collet(8mm)
3 30371 ColletBody
4 06611 BallBearing(3)
5 30420 ClampNut
6 30421 ExtensionShaft
7 30423 Pilot(.75ID)
8 30392 SpringWasher(2)
9 06629 FrontEndPlate
10 06621 O-Ring
11 30418 FrontEndPlateSpacer
12 30422 Rotor
13 06647 Vane,Setof4
14 06631 CylinderLiner
15 30373 MotorRestrictingWasher
Fig. 3M PN Description
16 06630 RearEndPlate
17 06612 BallBearing
18 06625 Housing
19 30400 O-Ring
20 06626 TriggerValveStem
21 06616 Pin
22 06614 CompressionSpring
23 06620 O-Ring
24 06627 AirRegulator
25 06613 CompressionSpring
26 06622 SteelBall
27 06599 HousingCover,.5HP
28 06635 PaddleAssembly
29 06617 RollPin
30 06632 MuferMaterial
31 06615 DiscSpring
32 06628 ExhaustDeector
33 06618 InletBushing
34 06569 9/16inx3/4inWrench(2)
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