Koyo
FOR REFERENCE ONLY
  • Angular contact ball bearings
  • Matched pair
  • Back-to-back
  • With pressed cage


Bearing No. 7308BDB

Specification data (main dimensions, etc.)

d(mm)40
D(mm)90
B(mm)46
r(min.)(mm)1.5
r1(min.)(mm)1
Basic load ratings : Cr(kN)91.0
Basic load ratings : C0r(kN)60.6
Fatigue load limit : Cu(kN)3.95
factor : f0-
Limiting speeds(Grease lub.)(min-1)4400
Limiting speeds(Oil lub.)(min-1)5900
Load center spread : a(mm)77.5

Mounting dimensions,weight (reference)

da(min.)(mm)48.5 mm
Db(max.)(mm)84.5 mm
ra(max.)(mm)1.5 mm
rb(max.)(mm)1 mm
Mass(Refer.)(kg)1.31 kg
JTEKT

2026/06/27