Koyo
FOR REFERENCE ONLY
  • Angular contact ball bearings
  • Single-row
  • With pressed cage


Bearing No. 7311C

Specification data (main dimensions, etc.)

d(mm)55
D(mm)120
B(mm)29
r(min.)(mm)2
r1(min.)(mm)1
Basic load ratings : Cr(kN)115
Basic load ratings : C0r(kN)66.1
Fatigue load limit : Cu(kN)4.90
factor : f013.4
Limiting speeds(Grease lub.)(min-1)7400
Limiting speeds(Oil lub.)(min-1)9600
Load center spread : a(mm)26.4

Mounting dimensions,weight (reference)

da(min.)(mm)65 mm
Da(max.)(mm)110 mm
ra(max.)(mm)2 mm
Mass(Refer.)(kg)1.45 kg
JTEKT

2026/07/05