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NominalrollersetborediameterFwmmStandardtypeWithsealsonbothsidesWithasealononesideNumberofoilholesoftheouterringTherecommendedfitsforMachinedTypeNeedleRollerBearingsareshownto24onpagesA41andA42.inTables22■LubricationBearingswithprepackedgreaseareshowninTable5.ALVANIAGREASES2(ShellLubricantsJapanK.K.)isprepackedasthelubricatinggrease.Inthecaseofbearingswithoutprepackedgrease,performproperlubrication.Operatingthemwithoutlubricationwillincreasethewearoftherollingcontactsurfacesandshortentheirlives.Table5Bearingswithprepackedgrease〇:Withprepackedgrease×:WithoutprepackedgreaseBearingtypeStandardtypeWithsealsonbothsidesWithasealononeside×----〇--〇-×××××CagedNeedleRollerBearingsGuideNeedleRollrBearingsMetricseriesInchseriesMetricseriesRNA,NATR,TRITAF,TAFI,TAF/SGBR,BRIGTR,GTRI■OilHoleTable6.1showsthenumberofoilholesoftheouterringandTable6.2showsthenumberofoilholesoftheinnerring.Whenanouterringwithanoilholeisespeciallyrequiredforthetypewithoutanoilhole,add"-OH"beforetheclearancesymbolintheidentificationnum-ber.Whenanouterringwithanoilholeandanoilgrooveisrequiredforthetypewithoutanoilhole,attach"-OG"beforetheclearancesymbol.Example:TAFI203216-OHC2P6Whenanouterringwithmultipleoilholesoraninnerringwithanoilhole(s)isrequired,pleaseconsultIKO.■FitTable3TolerancesforsmallestsinglerollersetborediameterFwsminofinchseriesBRunit:μmFwNominalrollersetborediameter∆FwsminDeviationofsmallestsinglerollermmsetborediameterOver-18.03430.22641.91050.03870.10480.010Incl.18.03430.22641.91050.03870.10480.010102.108High+43+46+48+51+53+58+61Low+20+23+25+25+28+28+31■ClearanceRadialinternalclearancesofMachinedTypeNeedleRollerBearingsaremadetotheCNclearanceshowninTable18onpageA37.RadialinternalclearancesofBRIseriesarebasedonTable4.Table4RadialinternalclearanceofinchseriesBRIunit:μmFwNominalrollersetborediametermmRadialinternalclearanceOver-18.03425.90830.22635.05241.91050.03870.10480.010100.076Incl.18.03425.90830.22635.05241.91050.03870.10480.010100.076102.108Min.33414648505056566368Max.66768286899299104117127Table6.1NumberofoilholesoftheouterringCagedNeedleRollerBearingsBearingtypeMetricseriesRNA,NATR,TRITAF,TAFIInchseriesBR,BRIGuideNeedleRollerBearingsMetricseriesGTR,GTRIRemarkThetypewithanoilhole(s)isprovidedwithanoilgroove.D51------1---11-1101121Fw ≦ 2626 < FwFw ≦ 69.85069.850 < Fw
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