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


Bearing No. 47678R/20

Specification data (main dimensions, etc.)

d(mm)76.200
D(mm)133.350
T(mm)33.338
B(mm)33.338
C(mm)26.195
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)193
Basic load ratings : C0r(kN)245
Fatigue load limit : Cu(kN)37.2
Limiting speeds(Grease lub.)(min-1)2700
Limiting speeds(Oil lub.)(min-1)3700
Load center spread : a(mm)29.2
Constant :e0.40
Axial load factors : Y11.48
Axial load factors : Y00.82

Mounting dimensions,weight (reference)

da(mm)97.0 mm
db(mm)90.0 mm
Da(mm)119.0 mm
Db(mm)128.0 mm
ra(max.)(mm)6.4 mm
rb(max.)(mm)3.2 mm
Mass(Refer.)(kg)1.867 kg
JTEKT

2026/07/19