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The description of High precision R8 full ceramic bearings for bike:

Bearing No: R8 bearing

Boundary dimensions(mm)Inner Diameter: 12.7Outer Diameter: 28.575WidthOpen: 7.938Close: 7.938

Basic load ratings(N)dyn. : 2550Stat.: 1400

Limiting speeds(rpm )Grease: 24000Oil: 29000

Now we can produce two kinds of ceramic bearings: ZrO2 ceramic bearings and Si3N4 ceramic bearings.

(1) Zirconia bearings (ZrO2) full ceramic bearing series

Application: chemical industry, food mechanism, marine equipment sea water area and so on. 

Feature: with PTEE cages which have higher corrosion resistance, appliance temperature from 150 centigrade to 450 centigrade.

(2) Silicon nitride bearings (Si3N4) full ceramic bearings series  Feature : This kind of ceramic bearings have wider range of application in material usage, it's hardness could reach to HRC80 and the extreme high temperature could reach to approximately 800 centigrade, therefore smooth surface and hardness and non-lubrication are attributions of this material.Application: ultra-high vacuum, rc,high speed spindle machines, grinders, dental drill, instrument,skates ... 

Our product range:

1. Deep groove ball bearing

2. Angular contact ball bearing

3. Self-aligning ball bearing

4. Thrust ball bearing

5. Cylindrical roller bearing

6. Taper roller bearing

7. Needle roller bearing

8. Spherical roller bearing

9. Thrust roller bearing

10. Pillow block bearing

11. Rod end bering

12. Ceramic bearing

13.All types of bearings and some bearing accessories

Website:  www.China-bearings.cn

E-mail :   pennyliu1990 at hotmail.com

High precision R8 full ceramic bearings for bike