>> P.65
A62ABCDEFGHIJKLMTable41Damage,causesandcorrectiveactionConditionofbearingdamageCauseCorrectiveactionFlakingsatoppositecircumferentialpositionsonracewaysurfacesFlakingsinthevicinityofracewaysurfaceedgesandrollerendsFlakingsonracewaysurfaceswithanintervalcorrespondingtorollerpitchEarlyflakingonracewaysurfacesandrollingelementsGallingonracewaysurfacesandrollingsurfacesofrollersGallingbetweenrollerendfacesandcollarguidesurfacesCracksinouterorinnerringCrackedrollingelements,brokencollarBrokencageIndentationsonracewaysurfacesatanintervalcorrespondingtothepitchbetweenrollingelements(brinelling)IndentationonracewaysurfacesandrollingsurfacesofrollersFalsebrinelling(Phenomenonlikebrinelling)FrettingLocalizedwearoffittedsurfacesaccompaniedbyred-brownwearparticlesWearonracewaysurfaces,collarsurfaces,rollingsurfacesofrollers,cages,etc.CreepWearonfittedsurfacesDiscolorationofrollingelementsand/orracewaysurfacesand/orflangesurfaces,Adhesionandwelding,DiscolorationofcageRipplesonracewaysurfacesRustorcorrosiononbearinginsidesurfacesoronfittedsurfacesImproperroundnessofhousingboreImpropermounting,Shaftdeflection,Poorcentering,PooraccuracyofshaftorhousingGreatshockloadwhenmounting,RustingduringmachinestoppageToosmallclearance,Toogreatload,Poorlubrication,Rusting,etc.PoorlubricationinearlystagereaseconsistencytoohardHighaccelerationatstartPoorlubrication,Poormounting,LargeaxialloadExcessiveshockload,Toomuchinterference.Poorcylindricityofshaft.Toolargefilletradius,Developmentofthermalcracks,DevelopmentofflakingDevelopmentofflakingShocktocollarwhenmounting,DroppedbycarelesshandlingAbnormalloadtocagebypoormounting,PoorlubricationShockloadappliedwhenmounting,ExcessiveloadwhilestoppingBitingofforeignsubstancessuchasmetalchipsandsandsVibrationwhenthebearingisstationarysuchasduringtransportation,OscillatingmotionwithsmallamplitudeSlidingbetweenfittedsurfacesPenetrationofforeignparticles,Poorlubrication,RustSlidingbetweenfittedsurfaces,InsufficienttighteningofsleevePoorlubrication,Toosmallclearance,PoormountingMeltingbysparksduetoelectriccurrentCondensationofvaporinair,PenetrationofcorrosivesubstancesCorrectionofhousingboreaccuracyCarefulmounting,Carefulcentering,CorrectionofshouldersofshaftandhousingforrightanglesCarefulmounting,ProtectionagainstrustforlongperiodsofmachinestoppageCorrectselectionoffitandclearanceCorrectselectionoflubricantSelectionofsoftergrease,AvoidingquickaccelerationCorrectselectionoflubricantCorrectmountingReevaluationofloadconditions,Correctionoffit,Correctionofmachiningaccuracyofshaftorsleeve,MakingfilletradiussmallerthanthechamferdimensionofbearingCarefulhandlingandmountingMinimizingmountingerrors,StudyoflubricatingmethodandlubricantCarefulhandlingCleaningofhousing,Improvementofsealing,UseofcleanlubricantFixingofshaftandhousing,Useoflubricatingoil,ApplicationofpreloadtoreducevibrationIncreaseofinterference,ApplicationofoilImprovementofsealing,CleaningofhousingUseofcleanlubricantIncreaseofinterference,CorrecttighteningofsleeveSupplyofproperamountofproperlubricant,RecheckingoffitandbearingclearanceRecheckingofmountingdimensionsandrelatedpartsInsulationofbearing,GroundingtoavoidelectriccurrentCarefulstorageifunderhightemperatureandhighhumidity,Protectionagainstrust,ImprovementofsealingFlakingGallingBreakageDentAbnormalwearSeizureElectriccorrosionRust,corrosion1N=0.102kgf=0.2248lbs.1mm=0.03937inch
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