ceramic bearing

Ceramic bearings are developed for the adjustment, heavy load, low temperature, and lubrication free working conditions in harsh environments in the national defense industry. They are a perfect combination of new materials, new processes, and new structures. Transforming it into civilian technology, ceramic ball bearings can fully cover all application fields of precision, medium speed and above all steel bearings. The inner diameter, outer diameter, and other dimensions of ceramic bearings are standard sizes for P4, P5, and P6 grades of steel bearings established by the state. Due to the low coefficient of thermal expansion, low heat transfer performance, and small elasticity measurement of ceramic materials, installation coordination needs to be taken into account.

ceramic bearing
Zirconia all ceramic bearings have characteristics such as resistance to magnetic and electrical insulation, wear and corrosion, oil-free self-lubricating, high temperature and cold resistance, and can be used in extremely harsh environments and special working conditions. The collar and rolling elements are made of zirconia (ZrO2) ceramic material, and the retainer uses polytetrafluoroethylene (PTFE) as the standard configuration. Generally, glass fiber reinforced nylon 66 (RPA66-25), special engineering plastics (PEEK, PI), stainless steel (AISISUS316), brass (Cu), etc. can also be used.

Silicon nitride all ceramic bearingsSilicon nitride full ceramic bearing rings and rolling elements are made of silicon nitride (Si3N4) ceramic material, and RPA66-25, PEEK, PI, as well as phenolic laminated wood pipes can generally be used. Compared to ZrO2 material, SiN4 made all ceramic bearings are more suitable for higher speeds and load capacities, as well as for higher ambient temperatures. At the same time, precision ceramic bearings for high-speed, high-precision, and high rigidity spindles can be provided, with a maximum manufacturing accuracy of P4 to UP level.

Ceramic bearings can be applied to various harsh working conditions such as high speed, high temperature, low temperature, strong corrosion, strong magnetic field, vacuum, high pressure, etc. The main characteristics of ceramic bearings are: high load-bearing capacity, good heat resistance, high maximum speed, low friction temperature rise, low friction loss, high durability, good corrosion resistance, good insulation, low magnetic permeability, and good self-lubricating properties.