Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
>

Bearing No. 30240JR

Specifications
(Boundary dimensions ...etc)

d(mm)200
D(mm)360
T(mm)64
B(mm)58
C(mm)48
r(min.)(mm)5
r1(min.)(mm)4
Basic load ratings : Cr(kN)991
Basic load ratings : C0r(kN)1120
Fatigue load limit : Cu(kN)126
Limiting speeds(Grease lub.)(min-1)940
Limiting speeds(Oil lub.)(min-1)1200
Load center spread : a(mm)70.3
Constant e()0.44
Axial load factors : Y1()1.38
Axial load factors : Y0()0.76

Mounting dimensions

da(min.)(mm)222
db(max.)(mm)238
Da(max.)(mm)342
Da(min.)(mm)315
Db(min.)(mm)336
Sa(min.)(mm)12
Sb(min.)(mm)15
ra(max.)(mm)4
rb(max.)(mm)3

Refer.

(Refer.)Mass(kg) 26.4
JTEKT

2025/06/01