Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30234JR

Specifications
(Boundary dimensions ...etc)

d(mm)170
D(mm)310
T(mm)57
B(mm)52
C(mm)43
r(min.)(mm)5
r1(min.)(mm)4
Basic load ratings : Cr(kN)776
Basic load ratings : C0r(kN)867
Fatigue load limit : Cu(kN)103
Limiting speeds(Grease lub.)(min-1)1100
Limiting speeds(Oil lub.)(min-1)1500
Load center spread : a(mm)61.2
Constant e()0.44
Axial load factors : Y1()1.38
Axial load factors : Y0()0.76

Mounting dimensions

da(min.)(mm)192
db(max.)(mm)202
Da(max.)(mm)292
Da(min.)(mm)269
Db(min.)(mm)288
Sa(min.)(mm)8
Sb(min.)(mm)14
ra(max.)(mm)4
rb(max.)(mm)3

Refer.

(Refer.)Mass(kg) 17.8
JTEKT

2025/06/01