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


Bearing No. 28150/317

Specification data (main dimensions, etc.)

d(mm)38.100
D(mm)80.035
T(mm)21.432
B(mm)20.940
C(mm)15.875
r(min.)(mm)1.6
r1(min.)(mm)1.6
Basic load ratings : Cr(kN)71.6
Basic load ratings : C0r(kN)65.9
Fatigue load limit : Cu(kN)9.70
Limiting speeds(Grease lub.)(min-1)5300
Limiting speeds(Oil lub.)(min-1)7000
Load center spread : a(mm)16.9
Constant :e0.40
Axial load factors : Y11.49
Axial load factors : Y00.82

Mounting dimensions,weight (reference)

da(mm)45.5 mm
db(mm)43.5 mm
Da(mm)69.0 mm
Db(mm)73.0 mm
ra(max.)(mm)1.6 mm
rb(max.)(mm)1.6 mm
Mass(Refer.)(kg)0.486 kg
JTEKT

2026/07/04