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


Bearing No. 65390/20

Specification data (main dimensions, etc.)

d(mm)49.212
D(mm)114.300
T(mm)44.450
B(mm)44.450
C(mm)34.925
r(min.)(mm)3.6
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)237
Basic load ratings : C0r(kN)230
Fatigue load limit : Cu(kN)35.1
Limiting speeds(Grease lub.)(min-1)3800
Limiting speeds(Oil lub.)(min-1)5000
Load center spread : a(mm)31.7
Constant :e0.43
Axial load factors : Y11.40
Axial load factors : Y00.77

Mounting dimensions,weight (reference)

da(mm)70.0 mm
db(mm)60.0 mm
Da(mm)97.0 mm
Db(mm)107.0 mm
ra(max.)(mm)3.6 mm
rb(max.)(mm)3.2 mm
Mass(Refer.)(kg)2.174 kg
JTEKT

2026/07/22