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


Bearing No. 28680/22

Specification data (main dimensions, etc.)

d(mm)55.562
D(mm)97.630
T(mm)24.608
B(mm)24.608
C(mm)19.446
r(min.)(mm)3.6
r1(min.)(mm)0.8
Basic load ratings : Cr(kN)113
Basic load ratings : C0r(kN)131
Fatigue load limit : Cu(kN)19.7
Limiting speeds(Grease lub.)(min-1)3900
Limiting speeds(Oil lub.)(min-1)5200
Load center spread : a(mm)21.2
Constant :e0.40
Axial load factors : Y11.49
Axial load factors : Y00.82

Mounting dimensions,weight (reference)

da(mm)68.0 mm
db(mm)62.0 mm
Da(mm)88.0 mm
Db(mm)92.0 mm
ra(max.)(mm)3.6 mm
rb(max.)(mm)0.8 mm
Mass(Refer.)(kg)0.759 kg
JTEKT

2026/07/16