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IRTLRT,LRTZIRBLRBLRBZ … BJISClass0(Seethetable12,pageA31)BasedonTable3BasedonTable4RemarkTolerancesofoutsidediameterofinnerringarebasedonTable5.Table3TolerancesofIRBunit:μmdNominalinsidediameterofinnerringmm∆dmpSingleplanemeanbore∆BsDeviationofaKiaRadialrunoutofsingleinnerringassembleddiameterdeviationwidthbearinginnerringMax.1010131520Low-250-250-250-250-250High00000Low-13-13-13-13-13OverIncl.High0000010183050802.510183050dNominalinsidediameterofinnerringmm∆dmpSingleplanemeanbore∆BsDeviationofaKiaRadialrunoutofsingleinnerringassembleddiameterdeviationwidthbearinginnerringMax.1013152025Low-130-130-130-130-130High00000Low-10-13-13-15-20Incl.High0000019.05030.16250.80082.550120.650Over-19.05030.16250.80082.550Table4TolerancesofLRB,LRBZ…Bunit:μmTable2TolerancesforinnerringModelcodeTolerance■IdentificationnumberTheidentificationnumberofInnerRingsconsistsofamodelcodeanddimensions.Anexampleisshownbelow.ExampleofidenticationnumberModelcodeDimensionsLRT202420TypeofinnerringBorediameterofinnerring(20mm)Outsidediameterofinnerring(24mm)Innerringwidth(20mm)■AccuracyInnerRingsDimensionalaccuracyofInnerRingsisbasedonTable2.InnerRingsforShellTypeNeedleRollerBearingsaremanufacturedsothatexactradialinternalclearancescanbeobtainedwhenassembledwithShellTypeforGeneralNeedleRollerBearings.UsageproduceCNclearancewhenusedtheassembledbearingsshowninTable1.2.LRBandLRBZ…Bmodelsproduceinternalclear-ancesshowninTable4onpageD5.WhenclearancesotherthanCNclearanceoraccura-cyotherthanClass0arerequired,pleaseconsultIKO.intheradial3<F≦66<F≦1010<F≦1818<F≦3030<F≦5050<F≦80OutsidediameterofinnerringmmFHighLowHighLow+50-5- 4- 9-190-10-10-11-21-26Low-12-12High00High-10Low-27High-7Low-23High-4Low-18dBorediameterofinnerring mmIncl.243040506580100120140160180200225250280315355400450500Over-243040506580100120140160180200225250280315355400450H3Table6TolerancesofoutsidediametersforLRTandLRTZ(WhentheclearanceisCNclearance)
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