Koyo
FOR REFERENCE ONLY
  • Deep groove ball bearings
  • Single-row
  • Shielded/sealed type
  • Non-contact sealed
>

Bearing No. 6311 2RU

Specifications
(Boundary dimensions ...etc)

d(mm)55
D(mm)120
B(mm)29
r(min.)(mm)2
Basic load ratings : Cr(kN)89.5
Basic load ratings : C0r(kN)45.0
Fatigue load limit : Cu(kN)3.45
factor : f0()13.2
Limiting speeds(Grease lub.)(min-1)5600
Limiting speeds(Oil lub.)(min-1)

Mounting dimensions

da(min.)(mm)64
da(max.)(mm)74.5
Da(max.)(mm)111
ra(max.)(mm)2

Refer.

(Refer.)Mass(kg) 1.37
JTEKT

2025/05/10