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


Bearing No. 34307/478

Specification data (main dimensions, etc.)

d(mm)77.788
D(mm)121.442
T(mm)24.608
B(mm)23.012
C(mm)17.462
r(min.)(mm)6.4
r1(min.)(mm)2.0
Basic load ratings : Cr(kN)113
Basic load ratings : C0r(kN)127
Fatigue load limit : Cu(kN)19.4
Limiting speeds(Grease lub.)(min-1)3000
Limiting speeds(Oil lub.)(min-1)4000
Load center spread : a(mm)26.8
Constant :e0.45
Axial load factors : Y11.33
Axial load factors : Y00.73

Mounting dimensions,weight (reference)

da(mm)96.0 mm
db(mm)84.0 mm
Da(mm)110.0 mm
Db(mm)116.0 mm
ra(max.)(mm)6.4 mm
rb(max.)(mm)2.0 mm
Mass(Refer.)(kg)0.884 kg
JTEKT

2026/07/30