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


Bearing No. 32972JR

Specification data (main dimensions, etc.)

d(mm)360
D(mm)480
T(mm)76
B(mm)76
C(mm)57
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)1350
Basic load ratings : C0r(kN)2400
Fatigue load limit : Cu(kN)231
Limiting speeds(Grease lub.)(min-1)560
Limiting speeds(Oil lub.)(min-1)740
Load center spread : a(mm)96.2
Constant e0.46
Axial load factors : Y11.31
Axial load factors : Y00.72

Mounting dimensions,weight (reference)

da(min.)(mm)378 mm
db(max.)(mm)379 mm
Da(max.)(mm)466 mm
da(min.)(mm)438 mm
db(min.)(mm)466 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)37.1 kg
JTEKT

2026/07/23