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


Bearing No. 42690/20

Specification data (main dimensions, etc.)

d(mm)77.788
D(mm)127.000
T(mm)30.162
B(mm)31.000
C(mm)22.225
r(min.)(mm)3.6
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)179
Basic load ratings : C0r(kN)225
Fatigue load limit : Cu(kN)32.3
Limiting speeds(Grease lub.)(min-1)2400
Limiting speeds(Oil lub.)(min-1)3200
Load center spread : a(mm)27.1
Constant :e0.42
Axial load factors : Y11.43
Axial load factors : Y00.79

Mounting dimensions,weight (reference)

da(mm)91.0 mm
db(mm)85.0 mm
Da(mm)114.0 mm
Db(mm)121.0 mm
ra(max.)(mm)3.6 mm
rb(max.)(mm)3.2 mm
Mass(Refer.)(kg)1.434 kg
JTEKT

2026/06/29