>> P.38
MeasurementmethodsAccuracyanddefinitionsFwsSingleborediameterofrollercomplementInradialbearingswithoutinnerrings,thedistancebetweentwoparallelstraightlinestouchingtheintersectionoftheinscribedcircleofrollercomplementandtheradialplane.MeasuringloadFwsminSmallestsingleborediameterofrollercomplementInradialbearingswithoutinnerrings,theminimumvalueofthesingleborediameterofrollercomplement.RemarkDiameterofacylinderwherethesmallestsingleborediameterofrollercomplementhaszeroradialclearanceinatleastoneradialdirection.SingleborediameterofrollingelementcomplementFastenthemastergaugetoasurfaceplate.Positionthebearingonthemastergaugeandapplytheindicatorintheradialdirectionnearthemiddleofthewidthontheringoutsidesurface.Measuretheamountofmovementoftheouterringintheradialdirectionbyapplyingsufficientloadontheouterringinthesameradialdirectionasthatoftheindicatorandintheoppositeradialdirection.Recordindicatorreadingsattheextremeradialposi-tionsoftheouterring.Rotatethebearingandrepeatthemeasurementinseveraldifferentangularposi-tionstodeterminethelargestandthesmallestread-ings,FwsmaxandFwsmin.MastergaugeZerothegaugeindicatortotheappropriateheightfromthereferencesurfaceusinggaugeblocksoramaster.Supportonefaceoftheinnerorouterringonthreeequallyspacedfixedsupportsofequalheightandprovidetwosuitableradialsupportsontheboreoroutsidesurfacesetat90°toeachothertocentretheinnerorouterring.Positiontheindicatoragainsttheotherfaceoftheringoppositeonefixedsupport.Rotatetheinnerorouterringonerevolutionandmeasureandrecordthelargestandthesmallestsingleinner(outer)ringwidth,BsmaxandBsmin,(CsmaxandCsmin).∆BsDeviationofasingleinnerringwidthVBsVariationofinnerringwidth∆CsDeviationofasingleouterringwidthVCsVariationofouterringwidthDeviationofsingleinnerringwidthandnominalinnerringwidth.∆Bs=Bs-BDeviationofthemaximumandminimumvaluesofthesingleinnerringwidthforindividualinnerrings.VBs=Bsmax-BsminDeviationofsingleouterringwidthandnominalouterringwidth.∆Cs=Cs-CDeviationofthemaximumandminimumvaluesofthesingleouterringwidthforindividualouterrings.VCs=Csmax-CsminSupportthebearingonasurfaceplate.Zerothegaugeindicatortoanappropriateheightfromthesur-faceplateusinggaugeblocksoramaster.Placeaplateofknownthicknessonthebearingassembly,applyadynamicallystablecoaxialload,andpositiontheindicatoroverthecentreoftheplate.Rotatethehousingwasherseveraltimes,tobesuretoreachthesmallestheight,andtakeindicatorreadings.DiskmasterDeviationofactualbearingheightandnominalbearingheightofthethrustbearing.∆TsDeviationoftheactualbearingheight∆Ts=Ts-TTs:ActualbearingheightT:NominalbearingheightInnerringwidthOuterringwidthBearingheightA35
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