• 63 Series
  • 63 Series

Description

Our deep groove ball bearings deliver reliable performance in a wide range of applications and conditions. With super-finished raceways and controlled geometries, our premium design helps ensure consistent quality. Our portfolio includes standard, thin section, narrow, wide and miniature and extra-small deep groove ball bearings that span 3 mm to 400 mm bore sizes. The extended product line includes a complete offering of open, shields, seals and snap ring combinations.


Easy Interchange

Designed as metric bearings, our deep groove ball bearings follow ISO standards and are dimensionally interchangeable with competitor metric products.


Brass Cage Availability

Deep groove ball bearings with brass cages (available in select sizes) can deliver extra strength and durability in the most unrelenting conditions: extreme shock loads, high vibrations and high forces due to acceleration.


Quiet Running for Electric Motor Quality

Deep groove ball bearings are frequently used in electric motor applications to minimize vibration and noise. 

Zhoutai BearingZhoutai Bearing


Dimension and Parameters

Designation
With shiled :638
Open type :638ZZ1
With seal VV :638VV
With seal DD :638DD
Principal dimensions(mm)
d :8
D :28
B :9
B1 :9
r(min) :0.3
Basic load ratings(N)
Cr :4550
Cor :1970
Basic load ratings{kgf}
Cr :465
Cor :201
Speed ratings(rpm)
Grease
ZZ :28000
D·D :22000
Oil
Z :34000
Abutment and fillet dimensions (mm)
da(min) :10
db(max) :12.8
Da(Max) :26
Db(min) :22.8
ra(max) :0.3
rb(max) :0.3
Weight(g)
Open type :28.3
With shiled :28.6