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

Bearing No. W688 ZZ

Specifications
(Boundary dimensions ...etc)

d(mm)8
D(mm)16
B(mm)5
r(min.)(mm)0.2
Basic load ratings : Cr(kN)1.55
Basic load ratings : C0r(kN)0.59
Fatigue load limit : Cu(kN)0.020
factor : f0()14.0
Limiting speeds(Grease lub.)(min-1)42000
Limiting speeds(Oil lub.)(min-1)-

Mounting dimensions

da(min.)(mm)9.6
Da(max.)(mm)14.4
ra(max.)(mm)0.2

Refer.

(Refer.)Mass(g) 3.2
JTEKT

2025/10/30