>> P.73
1N=0.102kgf=0.2248lbs.1mm=0.03937inch■Lubrication■OilHoleinTableALVANIAGREASES2(ShellLubricantsJapanBearingswithprepackedgreaseareshown6.K.K.)isprepackedasthelubricatinggrease.Inthecaseofbearingswithoutprepackedgrease,performproperlubricationforuse.Ifthebearingsareoperatedwithoutthewearoftherollercontactsurfaceswillincreaseandthebearinglifewillbeshortened.lubrication,ForShellTypeNeedleRollerBearingswithanoilhole,"OH"isappendedtotheendoftheidentificationnumber.ExampleTA2525ZOHThesymbol"OH"isnotmarkedonthebearingitself,butisshownonitspackaging,etc.Whenbearingswithmultipleoilholesarerequired,pleaseconsultIKO.Table6Bearingswithprepackedgrease〇:Withprepackedgrease×:WithoutprepackedgreaseCagedClosedendWithsealsFullcomplementGreaseretained〇〇〇〇15°〇---D-0.2-0.3-0.025Fw××××Fig.1ExampleofmountingtoolFig.2MountingexamplesB6Standard××××BearingtypeTLA,TLAM,YTLTA,TAM,YTBA,BAM,YBBHA,BHAM,YBHSeriesMetricseriesInchseries■StaticSafetyFactorSinceShellTypeNeedleRollerBearingsemployanouterringmadefromathinsteelplatewhichisdrawn,carburizedandquenched,excessivelylargeloadsmustbeavoided.Therequiredstaticsafetyfactorisusuallymorethan3.■SpecificationsofshaftandhousingShellTypeNeedleRollerBearingsarecommonlyusedwithoutaninnerring.Insuchcases,thesurfacetheracewaysurfaceshouldbe58〜hardnessof64HRCandthesurfaceroughnessshouldnotexceed0.2μmRa.However,whentheoperatingconditionisnotsevere,asurfaceroughness0.8μmRaorlesscanbeused.Ifthesurfacehardnessislow,theloadratingmustbecorrectedbythehardnessfactorshownonpageA20.Whentreatedandfinishedbygrinding,theuseofIKOInnerRingsforShellTypeNeedleRollerBearings(SeepageH1.)isrecom-mended.theshaftcannotbeheat■MountingShellTypeNeedleRollerBearingsshouldbepressedintothehousingsgentlyusingtheappropriatetoolasshowninFig.1,withtheirmarkedendsurfaceup.Astheouterringisthin,itmustneverbestruckdirectlywithahammer.SincetheouterringsofShellTypeNeedleRollerBearingsarefirmlyfittedtohousingboreswithinter-ference,itisunnecessarytofixthemaxially.Fig.2showsmountingexamples.
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