Koyo
FOR REFERENCE ONLY
  • Self-aligning ball bearings
  • Open type


Bearing No. 2311

Specification data (main dimensions, etc.)

d(mm)55
D(mm)120
B(mm)43
r(min.)(mm)2
Basic load ratings : Cr(kN)94.2
Basic load ratings : C0r(kN)23.8
Fatigue load limit : Cu(kN)1.50
Limiting speeds(Grease lub.)(min-1)4600
Limiting speeds(Oil lub.)(min-1)6400
Constant :e0.41
Axial load factors : Y11.53
Axial load factors : Y22.37
Axial load factors : Y01.60

Mounting dimensions,weight (reference)

da(min.)(mm)64 mm
Da(max.)(mm)111 mm
ra(max.)(mm)2 mm
Mass(Refer.)(kg)2.10 kg
JTEKT

2026/07/01