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


Bearing No. 323/28CR

Specification data (main dimensions, etc.)

d(mm)28
D(mm)68
T(mm)25.75
B(mm)24
C(mm)20
r(min.)(mm)1.5
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)83.2
Basic load ratings : C0r(kN)72.9
Fatigue load limit : Cu(kN)10.5
Limiting speeds(Grease lub.)(min-1)6300
Limiting speeds(Oil lub.)(min-1)8500
Load center spread : a(mm)20.5
Constant e0.55
Axial load factors : Y11.10
Axial load factors : Y00.60

Mounting dimensions,weight (reference)

da(min.)(mm)36.5 mm
db(max.)(mm)35 mm
Da(max.)(mm)59.5 mm
da(min.)(mm)51 mm
db(min.)(mm)64 mm
Sa(min.)(mm)3 mm
Sb(min.)(mm)5.5 mm
ra(max.)(mm)1.5 mm
rb(max.)(mm)1.5 mm
Mass(Refer.)(kg)0.480 kg
JTEKT

2026/07/18