Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30218JR

Specifications
(Boundary dimensions ...etc)

d(mm)90
D(mm)160
T(mm)32.5
B(mm)30
C(mm)26
r(min.)(mm)2.5
r1(min.)(mm)2
Basic load ratings : Cr(kN)255
Basic load ratings : C0r(kN)261
Fatigue load limit : Cu(kN)39.0
Limiting speeds(Grease lub.)(min-1)2400
Limiting speeds(Oil lub.)(min-1)3200
Load center spread : a(mm)32.6
Constant e()0.42
Axial load factors : Y1()1.43
Axial load factors : Y0()0.79

Mounting dimensions

da(min.)(mm)102
db(max.)(mm)103
Da(max.)(mm)150
Da(min.)(mm)140
Db(min.)(mm)150
Sa(min.)(mm)5
Sb(min.)(mm)6.5
ra(max.)(mm)2
rb(max.)(mm)2

Refer.

(Refer.)Mass(kg) 2.65
JTEKT

2025/06/13