BorediameterSize  Minimum axial clamping forceAxial fitting forcefor bearings in the seriesfor bearings in the series718..D719..D70..D72..D718..D719..D70..D72..DdFsFcmm–NN66––260–––430–77––310490––41055088––450490––49060099––60065

KM, KML, HM .. T, AN, NLock nuts with a lock washerHM, HMELock nuts with a locking clipNLock nuts with a locking plateKMFELock nuts with an integral locking screwKMKLock nuts with an integral locking deviceKM and KML:thread 10 to 200 mm(sizes 0 to 40

Bore diameterHousingUnit seriesMetricInchSeriesMaterialStandardYSP 2.. 2Fstandard seals withadditional flingers (fig. 1)standard grease (VT307)✔–FY .. M (fig. 2)Cast ironISOFY .. LF✔–FYTB .. M (fig. 3)FYTB .. LF✔–FYK (fig. 4)CompositeFYK ..

Bore diameterReduction ofradial internalclearanceAxial drive-up1)2)Lock nuttightening angle2)3)dsαTaper 1:12Taper 1:30Taper 1:12≤min.max.min.max.min.max.mmµmmm°243010150,250,29––100Applying therecommended valuesprevents the inner ringfrom creep

Inner ringdtΔdmptKiaTolerance classesNormal, CL2CL3, CL0≤ULULmmμmμm–76,2+130+130Values aregiven inouter ring table76,2101,6+250+130101,6266,7+250+130266,7304,8+250+130304,8609,6+510+250609,6914,4+760+380Outer ringDtΔDmptKia, tKeatKeaTolerance c

Bearing arrangement     Load case     Axial loadsBack-to-back     Case 1a     Case 1bFace-to-face     Case 1cBack-to-back     Case 2a     Case 2bFace-to-face     Case 2c

Bore diameterReduction ofradial internalclearanceAxial drive-up1)2) ds Taper1:12Taper1:30≤min.max.min.max.min.max. mmµmmm10012050600,790,952,002,35Applying the recommended valuesprevents the inner ring fromcreeping, but does not ensurecorrect ra

Shaft diameterat the seal lipRotational speedfor circumferential speed limits2 m/s4 m/s7 m/s8 m/s12 m/s13 m/smmr/min 201 9103 8206 6807 64011 46012 410251 5303 0605 3506 1109 1709 930301 2702 5504 4605 0907 6408 280 351 0902 1803 8204 3706 5507 090

Steel cagesPolymer cagesBrass cagesCage typeRibbon-type, ballcentredRiveted,ball centredSnap-type,ball centredSnap-type,ball centredSnap-type,ball centredRiveted,ball, outerring or innerring centredMaterialStampedsteelStampedsteelPA66, glassfibre rei

Bore diameterRadial internal clearancedC2NormalC3C4C5≤min.max.min.max.min.max.min.max.min.max.mmμm182410202035354545606075243015252540405555757595304015303045456060808010040502035355555757510010012550652040406565909012012015065803050508080110110145