Miniature bearing the inspection items may include the following nine items:

1, The rotation accuracy

Runout of assembled bearing inner ring KL, sets the outer sleeve bearing runout Ae Yi;

Complete bearing peripherally between the road beating five people bearing the reference end surface of the solid.

2, Clearance

Miniature bearings radial clearance; axial clearance.

3, Rotating cool activity

4, Vibration and noise

5, Friction torque

6, The contact angle

7, Residual magnetism

8, Appearance quality

9, Rigid

When the inspection of miniature bearings, and all of the above is the need to test, in addition to residual magnetism, visual quality, and the remaining test items depending on the user requirements and product use and they