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IntroductionTable of ContentsTapered Roller ler Bearings Roller Bearings Roller BearingsThrustBearingsSplit PillowBlocksINTRODUCTIONAbout NSK Tapered Roller Bearings . . . . . . .100NOMENCLATURE/INTERCHANGEMetric Tapered Nomenclature . . . . . . . . . . . .101Metric Tapered Interchange . . . . . . . . . . . . .101Inch Tapered Nomenclature . . . . . . . . . . . . .102Inch Tapered Interchange . . . . . . . . . . . . . . .102APPLICATIONTapered Roller Applications . . . . . . . . . . . . .103BEARING TABLES30200 Metric Series: Bore 15 to 32mm . . . .10430300 Metric Series: Bore 35 to 50mm . . . .10631300 Metric Series: Bore 55 to 70mm . . . .10832000 Metric Series: Bore 75 to 85mm . . . .11032200 Metric Series: Bore 90 to 100mm . . .11232300 Metric Series: Bore 105 to 120mm . .11432900 Metric Series: Bore 130 to 160mm . .11633000 Metric Series: Bore 170 to 200mm . .11833100 Metric Series: Bore 220 to 400mm . .12033200 Metric Series: Bore 25 to 100mm . . .12230200C Metric Series: Medium Angle . . . . .124Super PrecisionBearings30300C Metric Series: Medium Angle . . . . .12632200C Metric Series: Medium Angle . . . . .12832300C Metric Series: Medium Angle . . . . .130Inch Series . . . . . . . . . . . . . . . . . . . . . . . . . .132IntroductionLinearMotionABOUT NSK TAPERED ROLLER BEARINGSHR Metric Taper Roller BearingsInch Taper Roller BearingsTapered roller bearings are designed to take combined heavy radial loads and heavy thrust loadsin one direction while operating at moderate speeds. The bearings shown are single row with acone and cup (inner and outer rings) and a pressed steel retainer. Metric tapers feature asimplified part number for a complete bearing. Inch tapers require a part number for the cup andone for the cone. The difference between the metric and inch tapers is only in the dimensions ofmeasure for the bearings. Rolling MillBearingsEngineeringSection100NSK’s patented HR metric taper offers extra capacity within the same boundary dimensions. Thismeans that an ordinary metric taper can easily be replaced with NSK's HR metric taper.
HR: High 032900330003310033200CJContact AngleBlank: Standard angle 15ßto 17ßC: Medium angle 17ßto 24ßD: Steep angle 24ßand overPlease refer to the bearing tables for exact part number options.ThrustBearingsInterchange — Metric Tapered Roller BearingsBallBearingsInterchangeabilityJ: Cup angle and racewaydiameter conform to ISO 355X: Dimension series 32000 and32900 the major dimensionsconform to ISO 355TaperedSphericalCylindricalRoller Bearings Roller Bearings Roller BearingsPrefixBore Size(04 and up: multiply last two numbersby 5 to get bore in mm)02: 12mm 08: 40mm03: 17mm 10: 50mm04: 20mm 20: 100mmSpecial bore sizes are as follows:/22: 22mm /32: 32mm/28: 28mmIntroductionNomenclature — Metric Tapered Roller X--B-X--B-XASplit PillowBlocksFAGSuper PrecisionBearingsTimkenLinearMotionMEDIUM CONTACT ANGLESTEEP CONTACT ANGLEMODIFIED INTERNAL DESIGNCONFORMS TO ISO 355SKFRolling MillBearingsHIGH CAPACITY DESIGNLIGHTMEDIUMMEDIUM, STEEP ANGLEEXTRA LIGHT, WIDEVERY LIGHT, WIDELIGHT, WIDEMEDIUM, WIDEVERY LIGHT, EXTRA WIDELIGHT, EXTRA WIDEMEDIUM, EXTRA WIDENSKEngineeringSectionSuffixPart NumberDESCRIPTION101
IntroductionNomenclature — Inch Tapered Roller redRoller Bearings Roller Bearings Roller BearingsEH:EL:H:HH:HM:J:L:LL:LM:M:LMCode Included Cup Angle1234567890to 23 59'59.99"24 to 25 29'59.99"25 30' to 26 59'59.99"27 to 28 29'59.99"28 30' to 30 29'59.99"30 30' to 32 29'59.99"32 30' to 35 59'59.99"36 to 44 59'59.99"45 up, but not thrust only119Please refer to the bearingtables for exact partnumber options.Design Number2 digits which identifythe cup or cone49RAdditional Features*R: Conforms to AFBMA standardG: Case carburized cups & cone*NSK uses these two standard suffixes.Either one or two letter suffixes may appear.Basic Series1-3 digit number thatidentifies maximumbore rangeInterchange — Inch Tapered Roller BearingsThrustBearingsINTERCHANGEEXTRA HEAVYHEAVIER THAN HEAVYHEAVYHEAVY MEDIUMMEDIUMLIGHT MEDIUMLIGHTLIGHTER THAN LIGHTEXTRA LIGHT0 TO 23 59’59.9924 TO 25 29’59.9925 30’ TO 26 59’59.9927 TO 28 29’59.9928 30’ TO 30 29’59.9930 30’ TO 32 29’59.9932 30’ TO 35 59’59.9936 TO 44 59’59.9945 up, but not thrust onlyCONFORMS TO AFBMA STANDARDCASE CARBURIZED CUP & CONESuper PrecisionBearingsPrefixDESCRIPTIONCup AngleSplit PillowBlocksLinearMotionRolling MillBearingsEngineeringSection102Extra heavyExtra lightHeavyHeavier than heavyHeavy mediumMetric designedLightLighter than lightLight xxx5xxxx6xxxx7xxxx8xxxx9xxxx
lRoller Bearings Roller Bearings Roller Bearings Construction EquipmentMining EquipmentOil Field EquipmentAutomotive Front and Rear AxlesPlastic Forming EquipmentAgriculture EquipmentMotorcycle WheelsPinion Shafts of Differential GearsDrum ShaftsCrankshaftsCrushersThrustBearings Split PillowBlocks Guide Boxes in Bar and Rod MillsPumps and CompressorsCranes and HoistsGears and DrivesStamping PressesMachine Tool SpindlesBow Thrusts on ShipsSpeed ReducersTransmissionsSheavesConveyor and Transfer EquipmentCoupling EquipmentSuper PrecisionBearings LinearMotionMetric designs function the same as their inch series cousins, the difference lies in the units ofmeasure. NSK metric tapers are standardly supplied with cup and cone together, while inch seriesbearings are available by the cup, cone, or cup and cone. The applications shown below are foreither metric or inch bearings, with the equipment manufacturer choosing the preference ofdimensional measurements. Metric tapers are usually found in equipment designed in Europeor Asia.Rolling MillBearingsShown below are some common applications utilizing a tapered roller bearing design. The designallows for combinations of heavy radial and thrust loads with low to moderate speeds. Thissection covers only single row tapers although NSK manufactures a full line of two and four rowtapers as well. For more details on multiple row tapered roller bearings, please see the RollingMill section of this catalog or contact an NSK representative.EngineeringSectionTapered Roller Bearing Applications103
IntroductionBallBearingsTaperedRoller BearingsCylindricalSphericalTaperedRoller Bearings Roller Bearings Roller BearingsThrustBearingsSplit PillowBlocksSuper PrecisionBearingsLinearMotionRolling MillBearingsEngineeringSection10430200 Metric SeriesBore Diameter 15 – 320 mm0.5906 – 12.5984 inchNominal Bearing DimensionsBearingNumberdDTBPreferred Shoulder 81920.39421.969*Maximum fillet which corner radius of bearing will clear.Application DataBearing Tolerances –– Table 10.17 thru Table 10.21 on page 318-21Shaft & Housing Fits –– Table 10.31 on page 328da(min) db(max) Da(max)
IntroductionTCLimiting Speeds(1000 RPM)BallBearingsEffective BearingLoadWeightCenter 19177.72218.96Cr Dynamic Radial Load RatingCor Static Radial Load RatingTaperedSphericalCylindricalRoller Bearings Roller Bearings Roller BearingsBearingNumberBasic LoadRatings(lbs)ThrustBearingsaSplit PillowBlocksDaDSuper PrecisionBearingsdbBLinearMotiondadRolling MillBearingsrEngineeringSectionr105
IntroductionBallBearingsTaperedRoller BearingsCylindricalSphericalTaperedRoller Bearings Roller Bearings Roller BearingsThrustBearingsSplit PillowBlocksSuper PrecisionBearingsLinearMotionRolling MillBearingsEngineeringSection10630300 Metric SeriesBore Diameter 15 – 260 mm0.5906 – 10.2362 inchNominal Bearing DimensionsBearingNumberdDTBPreferred Shoulder .81920.394*Maximum fillet which corner radius of bearing will clear.Application DataBearing Tolerances –– Table 10.17 thru Table 10.21 on page 318-21Shaft & Housing Fits –– Table 10.31 on page 328da(min) db(max) Da(max)
IntroductionTCLimiting Speeds(1000 RPM)BallBearingsEffective BearingLoadWeightCenter 115.32159.64204.18251.98Cr Dynamic Radial Load RatingCor Static Radial Load RatingTaperedSphericalCylindricalRoller Bearings Roller Bearings Roller BearingsBearingNumberBasic LoadRatings(lbs)ThrustBearingsaSplit PillowBlocksDaDSuper PrecisionBearingsdbBLinearMotiondadRolling MillBearingsrEngineeringSectionr107
IntroductionBallBearingsTaperedRoller Bearings31300 Metric SeriesCylindricalSphericalTaperedRoller Bearings Roller Bearings Roller BearingsBore Diameter 25 – 150 mm0.9843 – 5.9055 inchNominal Bearing DimensionsBearingNumberdDTBPreferred Shoulder Diameters(in)CThrustBearingsSplit PillowBlocksSuper *Maximum fillet which corner radius of bearing will clear.LinearMotionRolling MillBearingsEngineeringSection108Application DataBearing Tolerances –– Table 10.17 thru Table 10.21 on page 318-21Shaft & Housing Fits –– Table 10.31 on page 328da(min) db(max) Da(max)
IntroductionTCLimiting Speeds(1000 r Dynamic Radial Load RatingCor Static Radial Load RatingTaperedSphericalCylindricalRoller Bearings Roller Bearings Roller BearingsBearingNumberBasic LoadRatings(lbs)ThrustBearingsaSplit PillowBlocksDaSuper PrecisionBearingsdbDBLinearMotiondadRolling MillBearingsrEngineeringSectionr109
IntroductionBallBearingsTaperedRoller BearingsCylindricalSphericalTaperedRoller Bearings Roller Bearings Roller BearingsThrustBearingsSplit PillowBlocksSuper PrecisionBearingsLinearMotionRolling MillBearingsEngineeringSection11032000 Metric SeriesBore Diameter 20 – 320 mm0.7874 – 12.5984 inchNominal Bearing DimensionsBearingNumberdDTBPreferred Shoulder 7.40218.189*Maximum fillet which corner radius of bearing will clear.Application DataBearing Tolerances –– Table 10.17 thru Table 10.21 on page 318-21Shaft & Housing Fits –– Table 10.31 on page 328da(min) db(max) Da(max)
IntroductionTCLimiting Speeds(1000 RPM)BallBearingsEffective BearingLoadWeightCenter 03.613.874.1157.7784.8989.52124.80132.30Cr Dynamic Radial Load RatingCor Static Radial Load RatingEngineeringSectionBearingNumberBasic LoadRatings(lbs)TaperedSphericalCylindricalRoller Bearings Roller Bearings Roller BearingsaThrustBearingsDaDSplit PillowBlocksdbBSuper PrecisionBearingsdadLinearMotionrRolling MillBearingsr111
IntroductionBallBearingsTaperedRoller BearingsCylindricalSphericalTaperedRoller Bearings Roller Bearings Roller BearingsThrustBearingsSplit PillowBlocksSuper PrecisionBearingsLinearMotionRolling MillBearingsEngineeringSection11232200 Metric SeriesBore Diameter 17 – 320 mm0.6693 – 12.5984 inchNominal Bearing DimensionsBearingNumberdDTBPreferred Shoulder um fillet which corner radius of bearing will clear.Application DataBearing Tolerances –– Table 10.17 thru Table 10.21 on page 318-21Shaft & Housing Fits –– Table 10.31 on page 328da(min) db(max) Da(max)
IntroductionTCLimiting Speeds(1000 RPM)BallBearingsEffective BearingLoadWeightCenter .82290.61384.80Cr Dynamic Radial Load RatingCor Static Radial Load RatingTaperedSphericalCylindricalRoller Bearings Roller Bearings Roller BearingsBearingNumberBasic LoadRatings(lbs)ThrustBearingsaSplit PillowBlocksDaDSuper PrecisionBearingsdbBLinearMotiondadRolling MillBearingsrEngineeringSectionr113
IntroductionBallBearingsTaperedRoller Bearings32300 Metric SeriesNominal Bearing DimensionsBearingNumberdDTBPreferred Shoulder R32304JHR32305JHR32306J172025300
Interchange — Metric Tapered Roller Bearings DESCRIPTION INTERCHANGE NSK SKF Timken FAG HIGH CAPACITY DESIGN HR --LIGHT HR302xx 302xx 302xx 302xx MEDIUM HR303xx 303xx 303xx 303xx MEDIUM, STEEP ANGLE HR313xx 313xx 313xx 313xx EXTRA LIGHT, WIDE HR329xx 329xx
