Grinding Wheel Mounting Instructions

M10

Disconnectairsupplyfromgrinderorshutoffairsupplyandexhaust(drain)air lineofcompressedairbeforemountingorremovinganyabrasivewheelorwire brush,orotherwiseperformingmaintenanceor serviceto thetool.

Checkgrinderspeedbeforemountinggrindingwheel(orothertypeaccessory) withareliabletachometertomakesurethattheactualspeedofthegrinderdoes notexceedits ratedfreespeed.

Checkoperatingspeedofgrindingwheelorwirebrushtobeusedwiththegrind- er.The maximumoperatingspeedmarkedon the grindingwheel,blottersor packaging,shallequalorexceedtheratedfreespeedofthegrinder.Also,the typeandsizeof thegrindingwheelorwirebrushshallbecompatiblewiththe grindersizeandtype.

Check abrasive wheels prior tomounting for chips or cracks. Cracked or wheelsshallnotbeused.

Caremustbetakenthatagrindingwheel,or wirebrush,ofthecorrectspeedrat- ingisused.RatedwheelcapacitiesforArogrindersaremaximumonly.Regard- lessoftheratedcapacityandspeedofanyArogrinder,abrasivewheelsorwire brushesshallneverbeoperatedata speedgreaterthanthatrecommendedby thewheel(orbrush)manufacturer.

DressingAbrasiveWheels.Uponmountingagrindingwheel,thetoolshouldbe operatedat graduallyincreasingspeedandcheckedfor goodbalanceofthe wheel.If unbalanceisobserved,thewheelshallbedressedIf.dressingfailsto establishacceptablebalance,thewheelshallnotbeused.

MOUNTING INSTRUCTIONS FOR MOUNTED WHEELS

FOR USE WITH 33226-( ), 41753-( ) OR 44127-( ) COLLET ASSEMBLIES.

Thecolletshallbecheckedtoassureitto beingoodconditionandproperlyaf- fixedto thegrinderspindle.

Themandrelshallbeinsertedtothefulldepthofthegrippingjawsofthecollet.At least1/2the mandrellengthshallbeinsertedintothecollet.

Themaximumsafeoperatingspeedformountedwheelsshallbedeterminedby thefollowing:1.)Shapeandsizeofthemountedwheel,2.)Sueofmandreland

3.) Overhang of mandrel. Inno case shall the maximum safe operating speed rec- ommendedbythewheelmanufacturerbeexceeded.

WARNING:Workpressure,If excessive,canbethe causeof troubleanda
sourceof danger,thru bending or fracture of the mandrel.Pressurebe-
tweenthewheelandthe work should neverbeso heavythat springing of	MANDREL OVERHANG - DIMENSION “0”
the mandrelwill result.	MANDREL OVERHANG - DIMENSION “0”
	FIGURE 1

IMPORTANTNOTICE:Increasingtheoverhangofthemandrelwill reducethemaximumwheelsizethatcanbesafelyusedwith thespeedofthetool (dimen- sion “O”,figure 1).Also,the lengthanddiameterof mandrelcombinedwith thesizeandshapeof thewheelaredeterminingfactorswhich mustbeconsld- eredwhenselectinga mountedwheelthat will becompatiblewith the ratedfreespeedof the tool. lt Is recommendedthe “Tablesof MaximumOperating Speedsfor MountedWheels”of the AmericanNationalStandardpublication B7.1-1978previously mentionedor other reliablesource,beconsultedto determinethe safeoperatingspeedof a particular size and shapeof wheel combinedwith the size and overhangof mandrel.

MOUNTING INSTRUCTIONS FOR TYPE 1 GRINDING WHEELS

Thedrivingflangeshallbeinspectedtoseethatit isoftherelievedtype,thatits	shallhaveareliefandcontactfaceidenticaltothedrivingflange,placedtoward
diameterisatleast1/3thediameterofthewheelandthatitisfreeofnicks,burrs	theblotter.
andsharpedges.Ablotter,separateorattachedtothewheelandatleastthedi-	A spindleendnutshallfollowtheouterflange.Holdspindlefromrotatingand
ameterofthedrivingflange,shallbearagainstthedrivingflange.Thewheelshall
beplacedonthespindlefollowingthefirstblotterThe.wheelshallnotfittoo snug-	screwspindleendnutsfirmlyagainsttheouterflange,butonlytightenoughto
ly nortoofreelyon the spindle.The normaldiametralclearancebetweenthe	insuresufficientfrictionontheblotterfacestodrivethewheel.Excessivetighten-
wheeland the spindleis approximately.007”(.17mm)maximumAbrasive.	ingcandistorttheflanges.Thespindleshallprojectflushwithorpasttheendof
wheelswhichdonotproperlyfitthespindleshallnotbeused.Separatereducing	thespindleendnut.Tosecurewheelsthinnerthantheunthreadedlengthofthe

bushings,unless supplied or recommended by the abrasive wheel manufacturer,spindle,spacershallbeusedbetweentheflangeandthespindleendnut.Such

shallnotbeusedto adaptlargerholeabrasivewheels.	aspacershallbeaprecisionpart,withparallelfacesrunningtruetothespacer’s
Asecondblotter,separateorattachedtothewheelandatleastthediameterof	centerhole.

theoutsideflange,shallfollowthe wheelon thespindle.An outerflange,the	Thesafetyguardshallbeproperlypositionedandthemountingcheckedtoas-
samediameterasthedrivingflange,shallfollowthesecondblotter.Theouter	suresecurepositioningThe.guardcovershallbeclosedandsecured.
flange

MOUNTINGINSTRUCTIONSFORTYPES 16,17,18,18R AND 19 CONEAND PLUG WHEELS

FOR USE WITH 37292-( ) WHEEL ADAPTER

Thedrivingflangeshallbeinspectedtoseethatit isoftheflat,unrelievedtype, diameterofthedrivingflange,shallbearagainstthedrivingflange. thatitsdiameter isleastat 1/3 the diameterofthe wheel and thatitisfree of nicks,

burrsandsharpedges.Thegrinding wheel shallbetightened on the spindlebyhand and shall bear firmly againsttheblotteranddrivingflange.Ifthewheelcannotbesecured,thespindle

The spindle and wheelthreads shallbe inspected toseethat they are of the same length shall be checkedIfthe. spindle lengthiscorrect andthe cone wheel still wilI pitchand diameter and ablotter, separate or attached tothe wheel and atnotleastfitfirmlythe againsttheblotter and driving flange,thewheel shallnotbe used and

a properfittingwheelshallbeselected.

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