Ball bearing review

Ball bearing is a kind of rolling bearings, whose spherical ball is mounted between the inner and the outer rims, and able to withstand greater loads.

The ball bearing is composed of four basic components: ball, inner ring, outer ring and cage or retainer. Ball bearing for general industrial use meet the criteria for AISI 52,100, and its balls and rings are usually made of high chromium steel, Rockwell C-scale hardness is between about 61-65. Hardness is lower than the ball and ring, and its materials: metal (such as carbon steel, aluminum) or non-metallic (such as Teflon, PTEF, polymer materials). Turning friction resistance of ball bearing is smaller than journal bearings, so at the same speed, the friction temperature will be relatively low.