Koyo
FOR REFERENCE ONLY
  • Deep groove ball bearings
  • Extra-small, miniature ball bearings
  • Standard type
  • Shielded ZZ
>

Bearing No. 633 ZZ

Specifications
(Boundary dimensions ...etc)

d(mm)3
D(mm)13
B(mm)5
r(min.)(mm)0.2
Basic load ratings : Cr(kN)1.65
Basic load ratings : C0r(kN)0.49
Fatigue load limit : Cu(kN)0.01
factor : f0()12.3
Limiting speeds(Grease lub.)(min-1)44000
Limiting speeds(Oil lub.)(min-1)-

Mounting dimensions

da(min.)(mm)4.6
Da(max.)(mm)11.4
ra(max.)(mm)0.2

Refer.

(Refer.)Mass(g) 3.0
JTEKT

2025/05/20