Koyo
FOR REFERENCE ONLY
  • Needle roller bearings
  • Radial needle roller and cage assemblies
  • Metric series
  • K,K.ZW
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Bearing No. K45X53X25H

Specifications
(Boundary dimensions ...etc)

Fw(mm)45
Ew(mm)53
Bc(mm)24.8
Basic load ratings : Cr(kN)45.9
Basic load ratings : C0r(kN)81.5
Fatigue load limit : Cu(kN)12.7
Cage material P/S()S
Limiting speeds(Grease lub.)(min-1)6200
Limiting speeds(Oil lub.)(min-1)9600

Mounting dimensions

Recommended dimensions - Shaft : S(max.)(mm)45.000
Recommended dimensions - Shaft : S(min.)(mm)44.989
Recommended dimensions - Housing : H(max.)(mm)53.029
Recommended dimensions - Housing : H(min.)(mm)53.010

Refer.

(Refer.)Mass(kg) 0.072
JTEKT

2025/06/01