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


Bearing No. 659/652

Specification data (main dimensions, etc.)

d(mm)76.200
D(mm)152.400
T(mm)41.275
B(mm)41.275
C(mm)31.750
r(min.)(mm)3.6
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)261
Basic load ratings : C0r(kN)301
Fatigue load limit : Cu(kN)45.3
Limiting speeds(Grease lub.)(min-1)2600
Limiting speeds(Oil lub.)(min-1)3400
Load center spread : a(mm)33.4
Constant :e0.41
Axial load factors : Y11.47
Axial load factors : Y00.81

Mounting dimensions,weight (reference)

da(mm)93.0 mm
db(mm)87.0 mm
Da(mm)134.0 mm
Db(mm)141.0 mm
ra(max.)(mm)3.6 mm
rb(max.)(mm)3.2 mm
Mass(Refer.)(kg)3.41 kg
JTEKT

2026/07/07