Ceramic bearings, as an important mechanical foundation component, are leading the way in the world of new materials due to their excellent performance that metal bearings cannot match, such as high temperature resistance and super strength. In the past decade, it has been increasingly widely applied in various fields of national economy and people's livelihood. Aerospace, navigation, nuclear industry, petroleum, chemical, textile industry, machinery, metallurgy, electricity, food, locomotives, subways, high-speed machine tools, and scientific research and defense military technology require special working conditions such as high temperature, high speed, deep cold, flammable, explosive, strong corrosion, vacuum, electrical insulation, non-magnetic, dry friction, etc. The indispensable substitute role of ceramic bearings is gradually being recognized by people. With the continuous advancement of processing technology and the increasing level of craftsmanship, the cost of ceramic bearings has been continuously decreasing. They have gradually been promoted from being applied only in a small range of high, precision, and cutting-edge fields in the past to various industrial fields in the national economy. The market price of products is also gradually approaching practicality, reaching a level that users can accept. The wave of large-scale application of ceramic bearings has surged!