Koyo
FOR REFERENCE ONLY
  • Spherical roller bearings
  • Adapter assembles
>

Bearing No. 21307RZK+H307X

Specifications
(Boundary dimensions ...etc)

d1(mm)30
B1(mm)35
d2(mm)52
B2(mm)9
B3(mm)-
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
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

A(min.)(mm)17
K(min.)(mm)58
de(min.)(mm)39
b(min.)(mm)7

Refer.

(Refer.)Mass(kg) 0.725
JTEKT

2025/06/01