Ceramic bearings are bearings made of ceramic materials, whose origins can be traced back to ancient times. In ancient China and Egypt, people began to use pottery to make bearings to reduce mechanical friction and wear. However, the development of modern ceramic bearings can be traced back to the 1960s. At that time, people began to try to use advanced ceramic materials, such as alumina, silicon trident and silicon carbide, to make more wear-resistant and high-temperature bearings. These ceramic materials have the advantages of low friction coefficient, high hardness, corrosion resistance and high temperature stability, so that ceramic bearings are widely used in some special fields. With the progress of materials science and manufacturing technology, ceramic bearings have been widely used in space, semiconductors, medical equipment and high-speed machinery. Ceramic bearings have a long service life, higher speed and better corrosion resistance, which can meet the requirements under special working conditions. Generally speaking, the origins of ceramic bearings can be traced back to ancient times, but their modern applications have benefited from advances in materials science and manufacturing technology. Through the use of advanced ceramic materials, ceramic bearings have unique advantages and application prospects in some special fields.
