Due to its excellent properties such as corrosion resistance, high temperature resistance, and wear resistance, ceramic bearings have a wide range of applications in special environments such as food machinery. In the production process of food machinery, some mechanical components need to come into frequent contact with food, so they need to have good corrosion resistance. Ceramic bearings can precisely meet this requirement. In addition, due to the long-term operation of food machinery in the production process, a bearing that can withstand high temperature and wear is needed, which is also one of the reasons why ceramic bearings are widely used.