Koyo
FOR REFERENCE ONLY
  • Spherical roller bearings
  • Spherical roller bearings
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Bearing No. 21315RZ

Specifications
(Boundary dimensions ...etc)

d(mm)75
D(mm)160
B(mm)37
r(min.)(mm)2.1
Basic load ratings : Cr(kN)306
Basic load ratings : C0r(kN)298
Fatigue load limit : Cu(kN)24.3
Limiting speeds(Grease lub.)(min-1)3000
Limiting speeds(Oil lub.)(min-1)4100
Constant e()0.24
Axial load factors : Y1()2.87
Axial load factors : Y2()4.27
Axial load factors : Y0()2.80

Mounting dimensions

da(min.)(mm)87
da(max.)(mm)
Da(max.)(mm)148
Da(min.)(mm)
ra(max.)(mm)2

Refer.

(Refer.)Mass(kg) 3.81
JTEKT

2025/06/16