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


Bearing No. 32960JR

Specification data (main dimensions, etc.)

d(mm)300
D(mm)420
T(mm)76
B(mm)76
C(mm)57
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)1320
Basic load ratings : C0r(kN)2210
Fatigue load limit : Cu(kN)223
Limiting speeds(Grease lub.)(min-1)680
Limiting speeds(Oil lub.)(min-1)910
Load center spread : a(mm)79.9
Constant e0.39
Axial load factors : Y11.52
Axial load factors : Y00.84

Mounting dimensions,weight (reference)

da(min.)(mm)318 mm
db(max.)(mm)324 mm
Da(max.)(mm)406 mm
da(min.)(mm)383 mm
db(min.)(mm)405 mm
Sa(min.)(mm)12 mm
Sb(min.)(mm)19 mm
ra(max.)(mm)3 mm
rb(max.)(mm)2.5 mm
Mass(Refer.)(kg)32.4 kg
JTEKT

2026/07/01