Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 32909JR

Specifications
(Boundary dimensions ...etc)

d(mm)45
D(mm)68
T(mm)15
B(mm)15
C(mm)12
r(min.)(mm)0.6
r1(min.)(mm)0.6
Basic load ratings : Cr(kN)43.5
Basic load ratings : C0r(kN)52.4
Fatigue load limit : Cu(kN)7.45
Limiting speeds(Grease lub.)(min-1)5300
Limiting speeds(Oil lub.)(min-1)7100
Load center spread : a(mm)12.5
Constant e()0.32
Axial load factors : Y1()1.88
Axial load factors : Y0()1.04

Mounting dimensions

da(min.)(mm)49.5
db(max.)(mm)50
Da(max.)(mm)63.5
Da(min.)(mm)61
Db(min.)(mm)64
Sa(min.)(mm)3
Sb(min.)(mm)3
ra(max.)(mm)0.6
rb(max.)(mm)0.6

Refer.

(Refer.)Mass(kg) 0.190
JTEKT

2025/06/12