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


Bearing No. 32308JR

Specification data (main dimensions, etc.)

d(mm)40
D(mm)90
T(mm)35.25
B(mm)33
C(mm)27
r(min.)(mm)2
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)145
Basic load ratings : C0r(kN)139
Fatigue load limit : Cu(kN)21.3
Limiting speeds(Grease lub.)(min-1)4600
Limiting speeds(Oil lub.)(min-1)6200
Load center spread : a(mm)24.3
Constant e0.35
Axial load factors : Y11.74
Axial load factors : Y00.96

Mounting dimensions,weight (reference)

da(min.)(mm)50 mm
db(max.)(mm)50 mm
Da(max.)(mm)80 mm
da(min.)(mm)73 mm
db(min.)(mm)82 mm
Sa(min.)(mm)3 mm
Sb(min.)(mm)8 mm
ra(max.)(mm)2 mm
rb(max.)(mm)1.5 mm
Mass(Refer.)(kg)1.06 kg
JTEKT

2026/08/02