>> P.77
BearingsarevulnerabletoimpactBearingswillsufferfrombrinellingunderimpactloads.•HandlewithcareDonotdropfromhighplacesorthrow,evenwhenpackaged.Aswell,donothandlebearingsroughlywhentransferringintoacontainerorduringstorage.Otherwise,brinellingandshieldplateindentationwillresult.•DonotusefallenpartsDonotusebearingsthathavefallenorbeendropped.Brinellingduetofallimpactwillleadtoabnormalnoise.PrecautionsforUseandAssemblyUnsuitablebearinguseorassemblywillgenerateabnormalnoise,vibration,runout,orrotationdefects.Keeptheworkenvironmentcleanandbecarefulwithpartsandworkmanagementaswell.DonotmodifyUsebearingsinthestateinwhichtheyweredelivered.•DisassemblyandreassemblyDonotdisassembleorreassemblethebearings.Abnormalnoiseandrotationdefectswillresultfromdustingressandscratches.CleanlinessBecarefultokeepbearingsandmatingpartsclean.•Partscleaning(Fig.18-1)Keepthepartssuchasshaftandhousing,wherethebearingwillbeassembled,clean.Contaminationontheshaftorhousingwillgenerateabnormalnoiseandmisalignment(assemblyprecisiondefects).:Dust,metalpowder,etc.:Scratches,bitedamageFig.18-1Misalignmentduetocontamination/scratches77
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