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


Bearing No. 32311C

Specification data (main dimensions, etc.)

d(mm)55
D(mm)120
T(mm)45.5
B(mm)43
C(mm)35
r(min.)(mm)2.5
r1(min.)(mm)2
Basic load ratings : Cr(kN)230
Basic load ratings : C0r(kN)247
Fatigue load limit : Cu(kN)36.9
Limiting speeds(Grease lub.)(min-1)3400
Limiting speeds(Oil lub.)(min-1)4600
Load center spread : a(mm)35.9
Constant e0.55
Axial load factors : Y11.10
Axial load factors : Y00.60

Mounting dimensions,weight (reference)

da(min.)(mm)67 mm
db(max.)(mm)67 mm
Da(max.)(mm)108 mm
da(min.)(mm)90 mm
db(min.)(mm)113 mm
Sa(min.)(mm)4 mm
Sb(min.)(mm)10 mm
ra(max.)(mm)2 mm
rb(max.)(mm)2 mm
Mass(Refer.)(kg)2.45 kg
JTEKT

2026/07/31