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


Bearing No. 28584R/21

Specification data (main dimensions, etc.)

d(mm)52.388
D(mm)92.075
T(mm)24.608
B(mm)25.400
C(mm)19.845
r(min.)(mm)3.6
r1(min.)(mm)0.8
Basic load ratings : Cr(kN)107
Basic load ratings : C0r(kN)119
Fatigue load limit : Cu(kN)17.9
Limiting speeds(Grease lub.)(min-1)4200
Limiting speeds(Oil lub.)(min-1)5600
Load center spread : a(mm)19.9
Constant :e0.38
Axial load factors : Y11.59
Axial load factors : Y00.87

Mounting dimensions,weight (reference)

da(mm)65.0 mm
db(mm)58.0 mm
Da(mm)83.0 mm
Db(mm)87.0 mm
ra(max.)(mm)3.6 mm
rb(max.)(mm)0.8 mm
Mass(Refer.)(kg)0.682 kg
JTEKT

2026/07/07