Koyo
FOR REFERENCE ONLY
  • Needle roller bearings
  • Radial needle roller and cage assemblies
  • Metric series
  • K,K.ZW
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Bearing No. K70X78X30H

Specifications
(Boundary dimensions ...etc)

Fw(mm)70
Ew(mm)78
Bc(mm)30
Basic load ratings : Cr(kN)62.2
Basic load ratings : C0r(kN)139.0
Fatigue load limit : Cu(kN)21.8
Cage material P/S()S
Limiting speeds(Grease lub.)(min-1)3900
Limiting speeds(Oil lub.)(min-1)6000

Mounting dimensions

Recommended dimensions - Shaft : S(max.)(mm)70.000
Recommended dimensions - Shaft : S(min.)(mm)69.987
Recommended dimensions - Housing : H(max.)(mm)78.029
Recommended dimensions - Housing : H(min.)(mm)78.010

Refer.

(Refer.)Mass(kg) 0.140
JTEKT

2025/06/03