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


Bearing No. 32909JR

Specification data (main 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 e0.32
Axial load factors : Y11.88
Axial load factors : Y01.04

Mounting dimensions,weight (reference)

da(min.)(mm)49.5 mm
db(max.)(mm)50 mm
Da(max.)(mm)63.5 mm
da(min.)(mm)61 mm
db(min.)(mm)64 mm
Sa(min.)(mm)3 mm
Sb(min.)(mm)3 mm
ra(max.)(mm)0.6 mm
rb(max.)(mm)0.6 mm
Mass(Refer.)(kg)0.190 kg
JTEKT

2026/07/27