With the progress of Chinese bearing industry manufacturing technology, professional bearing manufacturers continuously work hard and pursuit to produce much lower noise bearings. There are multifaceted factors affecting the working noise of bearings. During all the factors, bearing steel ball plays a significant role on the vibration noise of bearings.

Here list the main factors concern bearing steel balls as follows:

1. Surface roughness;

2. Deviation of spherical form;

3. Variation of ball diameter;

4. Surface waviness;

5. Cleanliness of the surface;

6. Material quality.

Since most of the factors is related to the precision grade of bearing steel balls, following countermeasures will clearly improve the vibration noise of bearings:

1. Improve the rigidity and precision of steel ball production machine;

2. Revise steel ball processing technology scientifically ;

3. Control abrasive, grinding disc and other processing conditions strictly;

4. Consistently control the machine load reasonably to ensure the standard depth of the groove R arc;

5. Cleaning and protection of the unload bearing steel balls.