One way needle roller bearings HF

HF                   steel spring drawn cup needle roller clutch
HF..KF            Plastic spring drawn cup needle roller clutches and bearing assemblies
HF..R              Steel spring drawn cup needle roller clutch, outer ring part knurled
HF..KFR         Plastic spring drawn cup needle roller clutches and bearing assemblies, outer ring partially knurled
HFL steel      spring drawn cup needle roller clutches and bearing assemblies, plain or rolling bearings

HFL..KF         Plastic spring drawn cup needle roller clutches and bearing assemblies, plain or rolling bearings
HFL..R           Steel spring drawn cup needle roller clutches and bearing assemblies, outer ring partially knurled
HFL..KFR      Plastic spring drawn cup needle roller clutches and bearing assemblies, outer ring partially knurled

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