According to the use of points: (1) high-speed bearings: cold resistance, small elasticity of force, pressure resistance, poor thermal conductivity, light weight, low coefficient of friction, etc., can be used in 12000 rpm-75000 rpm high-speed spindles and other high-precision equipment; (2), high-temperature bearings: the material itself has a high-temperature resistance degree of 1200 ℃ and self-lubricating, the use of the temperature of 100 ℃ - 800 ℃ does not produce expansion caused by temperature differences. 800 ℃ does not produce expansion caused by temperature difference. Can be used in furnace, plastic, steel and other high-temperature equipment; (3), corrosion-resistant bearings: the material itself has a corrosion-resistant properties, can be used in strong acid, strong alkali, inorganic, organic salts, seawater and other fields, such as: electroplating equipment, electronic equipment, chemical machinery, shipbuilding, medical equipment and so on. (4) Anti-magnetic bearings: Because of non-magnetic and non-absorbent dust, it can reduce the early spalling of bearings and high noise. Available in demagnetization equipment. Precision instruments and other fields. (5), electric insulation bearings: due to high electric resistance, can avoid arc damage bearings, can be used in a variety of requirements for insulation of electric equipment. (6) Vacuum bearings: Because of the unique oil-free self-lubricating characteristics of ceramic materials, in the ultra-high vacuum environment, can overcome the ordinary bearings can not realize the lubrication problem. Note: the above five categories of bearings, the same set of bearings can be applied to high temperature, high speed, acid and alkali, magnetic field, non-insulation, but because of the material properties are different (see rare earth ceramic material properties table), so please customers to choose the product, according to their own application occasions, to select the most suitable material ceramic bearings. According to the material: zirconia full ceramic bearings full ceramic bearings with anti-magnetic electric insulation, wear-resistant and corrosion-resistant, oil-free self-lubrication, resistance to high temperature and high temperature and cold, etc., can be used in extremely harsh environments and special working conditions. Rings and rolling elements are made of zirconia (ZrO2) ceramic material, and the cage is made of polytetrafluoroethylene (PTFE) as a standard configuration, and glass fiber reinforced nylon 66 (RPA66-25), special engineering plastics (PEEK, PI), stainless steel (AISISUS316), and brass (Cu) are also available. Silicon nitride full ceramic bearings silicon nitride full ceramic bearing rings and rolling body with silicon nitride (Si3N4) ceramic material, keeper using polytetrafluoroethylene (PTFE) as standard, generally can also use RPA66-25, PEEK, PI, and phenolic sandwich wood tube, etc. SiN4 full ceramic bearings compared to ZrO2 material can be applied to higher speed and load capacity, as well as for higher ambient temperatures. They are also suitable for higher ambient temperatures. Precision ceramic bearings for high-speed, high-precision, and high-rigidity spindles are also available, with the highest manufacturing accuracy of P4 to UP grade. Full complement full ceramic bearings are full complement full ceramic bearings with notched balls on one side. Due to the design of cage-less structure, more ceramic balls can be loaded than standard structure bearings, thus increasing their load capacity, and also avoiding the limitations of cage materials, which makes ceramic cage full ceramic bearings corrosion-resistant and temperature-resistant. This series of bearings are not suitable for higher speeds, and when installing them, attention should be paid to installing the notched surface at the end that does not bear axial loads. Ceramic cage full ceramic bearings ceramic cage with wear resistance, high strength, corrosion resistance and self-lubricating advantages, the use of ceramic cage made of full ceramic bearings can be used in extremely strong corrosion, ultra-high and low temperatures and high vacuum and other harsh environments. Commonly used ceramic materials for ZrO2, Si3N4 or SiC. mixed ceramic ball bearings ceramic ball, especially silicon nitride ball with low density, high hardness, low coefficient of friction, wear-resistant, self-lubricating and rigidity and other characteristics, especially suitable for high-speed, high-precision and long-life mixed ceramic ball bearings rolling body (inner and outer ring for metal). Generally the inner and outer rings are made of bearing steel (GCr15) or stainless steel (AISI440C), and the ceramic balls can be made of ZrO2, Si3N4, or SiC. According to the technical grade: (1), deep groove ball bearings (technical grade: P4, P5, P6, P0) deep groove ball bearings, the most representative of rolling bearings, wide range of uses, can withstand radial loads and bi-directional axial loads. Suitable for high-speed rotation and the requirements of low noise, low vibration occasions or steel bearings can not be applied to high temperature, high temperature, corrosion, magnetic fields, non-insulation and other fields. (2), self-aligning ball bearings self-aligning ball bearings, the outer ring raceway is spherical, self-aligning, can be supplemented with different degrees of centrifugal and shaft deflection caused by the error. Used to produce shaft and shell of different heart or shaft deflection parts and high temperature, low cold, corrosion, magnetic field non-insulation and other requirements of the centering parts. Note: the tilt can not exceed 3 degrees. (3), single row angular contact ball bearings (technical grade: P4, P5, P6, P0) Angular contact bearings are suitable for high-speed and high-precision rotation, in high temperature, magnetic field, water, etc. does not affect its accuracy, and can withstand the synthetic load. Standard contact angle of 15 °, 30 ° and 40 °, the larger the contact angle axial load capacity, the smaller the contact angle bearing can withstand radial load and one-way axial load. They are generally mounted in pairs. Please pay attention to it when purchasing. (4), unidirectional thrust ball bearing unidirectional thrust ball bearing, is a washer-shaped ring with ball rolling path and assembled with the ball cage composition. Can bear axial load, but can not bear radial load.
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