>> P.65
1N=0.102kgf=0.2248lbs.1mm=0.03937inchABCDEFGHIJKLMA62ConditionofbearingdamageCauseCorrectiveactionFlakingsatoppositecircumferentialpositionsonracewaysurfacesImproperroundnessofhousingboreCorrectionofhousingboreaccuracyFlakingsinthevicinityofracewaysurfaceedgesandrollerendsImpropermounting,Shaftdeflection,Poorcentering,PooraccuracyofshaftorhousingCarefulmounting,Carefulcentering,CorrectionofshouldersofshaftandhousingforrightanglesFlakingsonracewaysurfaceswithanintervalcorrespondingtorollerpitchGreatshockloadwhenmounting,RustingduringmachinestoppageCarefulmounting,ProtectionagainstrustforlongperiodsofmachinestoppageEarlyflakingonracewaysurfacesandrollingelementsToosmallclearance,Toogreatload,Poorlubrication,Rusting,etc.CorrectselectionoffitandclearanceCorrectselectionoflubricantGallingonracewaysurfacesandrollingsurfacesofrollersGallingbetweenrollerendfacesandcollarguidesurfacesPoorlubricationinearlystageGreaseconsistencytoohardHighaccelerationatstartPoorlubrication,Poormounting,LargeaxialloadSelectionofsoftergrease,AvoidingquickaccelerationCorrectselectionoflubricantCorrectmountingCracksinouterorinnerringCrackedrollingelements,brokencollarBrokencageExcessiveshockload,Toomuchinterference.Poorcylindricityofshaft.Toolargefilletradius,Developmentofthermalcracks,DevelopmentofflakingReevaluationofloadconditions,Correctionoffit,Correctionofmachiningaccuracyofshaftorsleeve,MakingfilletradiussmallerthanthechamferdimensionofbearingDevelopmentofflakingShocktocollarwhenmounting,DroppedbycarelesshandlingCarefulhandlingandmountingAbnormalloadtocagebypoormounting,PoorlubricationMinimizingmountingerrors,StudyoflubricatingmethodandlubricantIndentationsonracewaysurfacesatanintervalcorrespondingtothepitchbetweenrollingelements(brinelling)Shockloadappliedwhenmounting,ExcessiveloadwhilestoppingCarefulhandlingIndentationonracewaysurfacesandrollingsurfacesofrollersFalsebrinelling(Phenomenonlikebrinelling)BitingofforeignsubstancessuchasmetalchipsandsandsCleaningofhousing,Improvementofsealing,UseofcleanlubricantVibrationwhenthebearingisstationarysuchasduringtransportation,OscillatingmotionwithsmallamplitudeFixingofshaftandhousing,Useoflubricatingoil,ApplicationofpreloadtoreducevibrationFrettingLocalizedwearoffittedsurfacesaccompaniedbyred-brownSlidingbetweenfittedsurfaceswearparticlesIncreaseofinterference,ApplicationofoilWearonracewaysurfaces,collarsurfaces,rollingsurfacesofrollers,cages,etc.Penetrationofforeignparticles,Poorlubrication,RustImprovementofsealing,CleaningofhousingUseofcleanlubricantCreepWearonfittedsurfacesSlidingbetweenfittedsurfaces,InsufficienttighteningofsleeveIncreaseofinterference,CorrecttighteningofsleeveFlakingGallingBreakageDentAbnormalwearSupplyofproperamountofproperlubricant,RecheckingoffitandbearingclearanceRecheckingofmountingdimensionsandrelatedpartsInsulationofbearing,GroundingtoavoidelectriccurrentCarefulstorageifunderhightemperatureandhighhumidity,Protectionagainstrust,ImprovementofsealingPoorlubrication,Toosmallclearance,PoormountingDiscolorationofrollingelementsand/orracewaysurfacesand/orflangesurfaces,Adhesionandwelding,DiscolorationofcageSeizureRipplesonracewaysurfacesMeltingbysparksduetoelectriccurrentRustorcorrosiononbearinginsidesurfacesoronfittedsurfacesCondensationofvaporinair,PenetrationofcorrosivesubstancescorrosionElectriccorrosionRust,Table41Damage,causesandcorrectiveaction
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