Koyo
FOR REFERENCE ONLY
  • Needle roller bearings
  • Radial needle roller and cage assemblies
  • Metric series
  • K,K.ZW
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Bearing No. K50X57X18FH

Specifications
(Boundary dimensions ...etc)

Fw(mm)50
Ew(mm)57
Bc(mm)18
Basic load ratings : Cr(kN)31.3
Basic load ratings : C0r(kN)56.4
Fatigue load limit : Cu(kN)8.95
Cage material P/S()S
Limiting speeds(Grease lub.)(min-1)5500
Limiting speeds(Oil lub.)(min-1)8500

Mounting dimensions

Recommended dimensions - Shaft : S(max.)(mm)50.000
Recommended dimensions - Shaft : S(min.)(mm)49.989
Recommended dimensions - Housing : H(max.)(mm)57.029
Recommended dimensions - Housing : H(min.)(mm)57.010

Refer.

(Refer.)Mass(kg) 0.050
JTEKT

2025/06/01