Koyo
FOR REFERENCE ONLY
  • Spherical roller bearings
  • Spherical roller bearings
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Bearing No. 21307RZ

Specifications
(Boundary dimensions ...etc)

d(mm)35
D(mm)80
B(mm)21
r(min.)(mm)1.5
Basic load ratings : Cr(kN)86.8
Basic load ratings : C0r(kN)75.8
Fatigue load limit : Cu(kN)5.90
Limiting speeds(Grease lub.)(min-1)6200
Limiting speeds(Oil lub.)(min-1)8300
Constant e()0.27
Axial load factors : Y1()2.49
Axial load factors : Y2()3.71
Axial load factors : Y0()2.43

Mounting dimensions

da(min.)(mm)43.5
da(max.)(mm)
Da(max.)(mm)71.5
Da(min.)(mm)
ra(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 0.572
JTEKT

2025/06/15