The many excellent properties of ceramic bearings and ceramic ball bearings, such as self-lubricating, high temperature resistance, corrosion resistance, anti magnetism, electrical insulation, etc., still need to be developed and utilized in a wider field, and the potential application fields are very huge. High quality high-speed ceramic ball bearings: They can serve the domestic machine tool industry well. The usage of bearings for high-speed and high-precision spindles and electric spindles is quite large, with an estimated annual demand of several hundred thousand sets or more. However, high-precision machine tool spindle bearings require relatively high machining accuracy and strict quality. For example, P4 grade bearings require high-precision ceramic balls above G5 grade. Currently, there are not many manufacturers in China that can produce them, and the stability of the products is also poor. Secondly, medium quality ceramic bearings can be widely and well used in many fields such as petroleum exploration, crude oil smelting, especially fine chemicals, chemical fibers, new energy, printing and dyeing, electroplating, sewage treatment, marine development, deep-water pumps, acid-base pumps, high temperature, vacuum, nuclear magnetic resonance, electrical insulation, medicine and health, X-ray tubes, and food industry. Many only require a general level of accuracy; Medium and low speed and load; Require bearings to be able to withstand corrosion from certain concentrations of acid, alkali, and salt; Resistant to high temperatures ranging from 300 to 400 ℃; Non magnetic, electrical, and non-toxic; It can be lubricated without oil or by using the working medium itself; It can also be used in seawater. The proportion of bearings used in these fields is very large for special bearings, and ceramic bearings and ceramic ball bearings are fully capable of replacing them, and can achieve the work that metal bearings are barely capable of and cannot do. Engineering ceramics have an irreplaceable position. With such a huge market as a prerequisite, we can completely create a new path in product development and manufacturing to broaden the application fields of ceramic bearings. To better serve production with new materials, processes, and technologies.