Ball Bearing

Ball Bearing is a kind of rolling bearing. The ball is installed in the middle of the inner steel ring and the outer steel ring, which can bear large load.

There mainly are four basic components: ball, inner ring, outer ring and cage or retainer. General industrial ball bearings should meet AISI 52100 standard. Balls and rings are usually made of high chromium steel, and Rockwell c-scale hardness is about 61-65. The hardness of the retainer is lower than that of the ball and ring, and its materials are metal (such as medium carbon steel, aluminum alloy) or non-metallic (such as Teflon, PTEF, polymer materials). The rotational friction resistance of this kinds of bearing is smaller than that of journal bearing, so the temperature generated by friction will be lower at the same speed.