Koyo
FOR REFERENCE ONLY
  • Angular contact ball bearings
  • Matched pair
  • Face-to-face
  • With machined cage


Bearing No. 7903CDF FY

Specification data (main dimensions, etc.)

d(mm)17
D(mm)30
B(mm)14
r(min.)(mm)0.3
r1(min.)(mm)-
Basic load ratings : Cr(kN)10.1
Basic load ratings : C0r(kN)5.90
Fatigue load limit : Cu(kN)0.240
factor : f014.9
Limiting speeds(Grease lub.)(min-1)28000
Limiting speeds(Oil lub.)(min-1)38000
Load center spread : a(mm)0.6

Mounting dimensions,weight (reference)

db(min.)(mm)19.5 mm
Da(max.)(mm)27.5 mm
ra(max.)(mm)0.3 mm
rb(max.)(mm)0.15 mm
Mass(Refer.)(kg)0.032 kg
JTEKT

2026/07/19