Koyo
FOR REFERENCE ONLY
  • Needle roller bearings
  • Radial needle roller and cage assemblies
  • Metric series
  • K,K.ZW
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Bearing No. K28X38X25,5

Specifications
(Boundary dimensions ...etc)

Fw(mm)28
Ew(mm)38
Bc(mm)25
Basic load ratings : Cr(kN)40.9
Basic load ratings : C0r(kN)52.7
Fatigue load limit : Cu(kN)8.25
Cage material P/S()S
Limiting speeds(Grease lub.)(min-1)11000
Limiting speeds(Oil lub.)(min-1)16000

Mounting dimensions

Recommended dimensions - Shaft : S(max.)(mm)28.000
Recommended dimensions - Shaft : S(min.)(mm)27.991
Recommended dimensions - Housing : H(max.)(mm)38.025
Recommended dimensions - Housing : H(min.)(mm)38.009

Refer.

(Refer.)Mass(kg) 0.059
JTEKT

2025/05/23