Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 32009JR

Specifications
(Boundary dimensions ...etc)

d(mm)45
D(mm)75
T(mm)20
B(mm)20
C(mm)15.5
r(min.)(mm)1
r1(min.)(mm)1
Basic load ratings : Cr(kN)78.8
Basic load ratings : C0r(kN)86.5
Fatigue load limit : Cu(kN)12.6
Limiting speeds(Grease lub.)(min-1)5000
Limiting speeds(Oil lub.)(min-1)6600
Load center spread : a(mm)16.5
Constant e()0.39
Axial load factors : Y1()1.53
Axial load factors : Y0()0.84

Mounting dimensions

da(min.)(mm)50.5
db(max.)(mm)51
Da(max.)(mm)69.5
Da(min.)(mm)67
Db(min.)(mm)72
Sa(min.)(mm)4
Sb(min.)(mm)4.5
ra(max.)(mm)1
rb(max.)(mm)1

Refer.

(Refer.)Mass(kg) 0.354
JTEKT

2025/06/01