Ball bearings are mainly made up of four basic elements

Ball bearing is a rolling bearing, ball ball mounted intermediate the inner and outer rims rims, able to withstand greater loads. Also known as ball bearings.
Ball bearings are mainly made up of four basic elements: Ball (ball), the inner ring (inner ring), the outer ring (outer ring) and the holder, also called retainer (cage or retainer). General industrial use of ball bearings to meet the AISI standard, ball and ring 52100 is usually based on high-chromium steel, Rockwell hardness (Rockwell C- scale hardness) of between about 61-65. While maintaining the hardness of the ball and ring compared to low, the material with metal (such as: carbon steel, aluminum alloy) or non-metallic (eg: Teflon, PTEF, polymer materials). Ball bearing (ball bearing) than the Ceramic Ball Bearings (journal bearing) rotation friction is small, and therefore at the same speed, temperature and friction will be relatively low.