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


Bearing No. 32256

Specification data (main dimensions, etc.)

d(mm)280
D(mm)500
T(mm)137
B(mm)130
C(mm)106
r(min.)(mm)6
r1(min.)(mm)5
Basic load ratings : Cr(kN)2340
Basic load ratings : C0r(kN)3150
Fatigue load limit : Cu(kN)297
Limiting speeds(Grease lub.)(min-1)610
Limiting speeds(Oil lub.)(min-1)810
Load center spread : a(mm)117.2
Constant e0.43
Axial load factors : Y11.39
Axial load factors : Y00.77

Mounting dimensions,weight (reference)

da(min.)(mm)308 mm
db(max.)(mm)325 mm
Da(max.)(mm)478 mm
da(min.)(mm)420 mm
db(min.)(mm)474 mm
Sa(min.)(mm)16 mm
Sb(min.)(mm)30 mm
ra(max.)(mm)5 mm
rb(max.)(mm)4 mm
Mass(Refer.)(kg)108 kg
JTEKT

2026/07/08