Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30230JR

Specifications
(Boundary dimensions ...etc)

d(mm)150
D(mm)270
T(mm)49
B(mm)45
C(mm)38
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)604
Basic load ratings : C0r(kN)664
Fatigue load limit : Cu(kN)80.9
Limiting speeds(Grease lub.)(min-1)1300
Limiting speeds(Oil lub.)(min-1)1800
Load center spread : a(mm)52.4
Constant e()0.44
Axial load factors : Y1()1.38
Axial load factors : Y0()0.76

Mounting dimensions

da(min.)(mm)168
db(max.)(mm)175
Da(max.)(mm)256
Da(min.)(mm)234
Db(min.)(mm)255
Sa(min.)(mm)9
Sb(min.)(mm)11
ra(max.)(mm)3
rb(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 11.6
JTEKT

2025/05/17