>> P.284
H3■IdentificationnumberTheidentificationnumberofInnerRingsconsistsofamodelcodeanddimensions.Anexampleisshownbelow.ModelcodeDimensionsLRT202024Exampleofidenti(cid:17)cationnumberTypeofinnerringInnerringwidth(20mm)Outsidediameterofinnerring(24mm)Borediameterofinnerring(20mm)■AccuracyDimensionalaccuracyofInnerRingsisbasedonTable2.InnerRingsforShellTypeNeedleRollerBearingsaremanufacturedsothatexactradialinternalclearancescanbeobtainedwhenassembledwithShellTypeNeedleRollerBearings.InnerRingsforGeneralUsageproduceCNclearancewhenusedintheassembledbearingsshowninTable1.2.LRBandLRBZ…Bmodelsproducetheradialinternalclear-ancesshowninTable4onpageD5.WhenclearancesotherthanCNclearanceoraccura-cyotherthanClass0arerequired,pleaseconsultIKO.Table6TolerancesofoutsidediametersforLRTandLRTZ(WhentheclearanceisCNclearance)dBorediameterofinnerring mmFOutsidediameterofinnerringmm3<F≦66<F≦1010<F≦1818<F≦3030<F≦5050<F≦80OverIncl.HighLowHighLowHighLowHighLowHighLowHighLow-243040506580100120140160180200225250280315355400450243040506580100120140160180200225250280315355400450500-10-27-7-23-4-18+50- 4- 9-19-500-12-12-11-21-260-10-10Table2TolerancesforinnerringModelcodeToleranceIRTLRT,LRTZIRBLRBLRBZ … BJISClass0(Seethetable12,pageA31)BasedonTable3BasedonTable4RemarkTolerancesofoutsidediameterofinnerringarebasedonTable5.∆dmpSingleplanemeanborediameterdeviation∆BsDeviationofasingleinnerringwidthKiaRadialrunoutofassembledbearinginnerringHighLowHighLowMax.00000000101013152000-250-250-250-250-250-13-13-13-13-13dNominalinsidediameterofinnerringmmOverIncl.2.5101830501018305080Table3TolerancesofIRBdNominalinsidediameterofinnerringmmOverIncl.-19.05030.16250.80082.55019.05030.16250.80082.550120.650∆dmpSingleplanemeanborediameterdeviation∆BsDeviationofasingleinnerringwidthHighLowHighLowKiaRadialrunoutofassembledbearinginnerringMax.00000000101315202500-130-130-130-130-130-10-13-13-15-20Table4TolerancesofLRB,LRBZ…Bunit:μmunit:μm
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