Ceramic ball bearings include full ceramic bearings and ceramic hybrid ball bearing. Full ceramic bearings are comprised of ceramic elements and ceramic rings . Ceramic hybrid ball bearings are composed of ceramic rolling elements (balls) enclosed in a ferrous (typically steel) inner and outer race. Since these bearings are constructed from many materials, they often operate in hybrid capacities.
We construct the rolling elements in ceramic bearings using several ceramic materials, including
• Silicon nitride (Si3N4)
• Aluminum oxide (Al2O3)
• Zirconium oxide (ZrO2)
• Silicon carbide (SiC)
1.Full ceramic bearing of ZrO2
Full ceramic bearings feature characteristics such as being anti-magnetic, electrically insulating, wear-resistant, corrosion-resistant, self-lubricating without oil, and capable of withstanding extreme high and low temperatures. They are suitable for extremely harsh environments and special working conditions. The rings and rolling elements are made of zirconia (ZrO2) ceramic while polytetrafluoroethylene (PTFE) is used as the standard material for the cage. Other commonly material used include glass fiber-reinforced nylon 66 (RPA66-25), specialty engineering plastics (PEEK, PI), stainless steel (AISI SUS316), and brass (Cu).
2.Full ceramic bearing of Si3N4
The rolling elements and outer and inner rings are made of Si3N4 and cages commonly made of PTFE, but if the customers have special requirements ,cages may be made of RPA66-25，PEEK，PI，or phenolic canvas laminate tube.Compared with ZrO2 ceramic bearings,Si3N4 bearings have higher rotation speed and load capacity.Meanwhile ,it is also suitable tog high temperature,We provide high precision ceramic bearings for high speed and rigid main shaft.The bearing precision is up to P4 or above.
3.Full complement ceramic ball bearing
Full complement ceramic ball bearing has ball filling hole in one face.Because there is no cage,more balls can be filled in full complement bearings compared with standard bearings.Therefore,the load capacity of bearing is increased sharply.Furthermore, no limit of cage material,the full complement ceramic ball bearing has the same effect as of bearing with ceramic cage.Please pay attention to that ,this kind of bearing is not suitable for high speed area.
4. Ceramic hybrid ball bearing
Ceramic hybrid ball bearings have ceramic balls and metal rings. Ceramic balls,especially Si3N4 ,with the features of high hardness,low density ,low friction coefficient and self-lubricating and high stiffness,are very suitable for high speed,high precision and long life areas.Bearing steel GCr15 or stainless steel (AISI 440C) are always chosen as rings materail while ZrO2，Si3N4 or SiC as rolling elements material.
We also manufacture large and high precision ceramic bearings.The large ceramic bearing is with the diameter up to 500mm.
Приложения
Corrosion Resistance: Chemical Industry, Fiber Manufacturing, Steel Industry, Food Industry, General Industrial Machinery, Electrical Machinery
Heat Resistance: Steel Industry, Chemical Industry, Automotive, Vacuum Machinery, Others
High-Speed Performance: Aerospace, Electrical Machinery, General Industrial Machinery, Vacuum Machinery
Light Weight: Aviation, Aerospace
Insulation Properties: Electrical Machinery, Machine Tools, Transportation Machinery
Non-Magnetic: Nuclear Reactors, Semiconductor Devices
Vacuum Compatibility: Vacuum Machinery
