2. Commonly used bearing equipment are: motor drive shaft, light (civil) motor vehicle transmission parts, mechanical processing equipment, factory production line mechanical transmission assembly, etc.

3. General industrial bearing balls are made of steel balls with hardness between 61 and 65. Due to the small area of the ball bearing, it is easy to cause serious mechanical damage at high speed, which speeds up the replacement frequency and increases the cost.

4. With the advancement of technology, cemented carbide bearing balls are gradually replacing steel ball bearing balls. The main component of cemented carbide bearing ball is tungsten cobalt alloy (WC-CO), the hardness is between 90-92HRA, and the wear resistance is good. Its wear resistance is dozens to hundreds of times that of steel balls. Surface polishing polishing, low friction coefficient, greatly improve the service life, reduce the cost.