In view of the adverse environment in modern industry (corrosion, heavy load, low temperature, high speed, no lubrication, antimagnetic, insulation) and the development of manufacturing, is the perfect combination of new materials, new technology, new structure. With the development of manufacturing technology for ceramic sintering technology and the continuous improvement of ceramic bearings, batch production of ceramic bearings. High price of the perfect embodiment of. All applications she completely cover the above precision, medium speed now all steel bearings. Silicon nitride ceramic bearings (Si3N4) ratio of zirconia (ZrO2) better, its light weight (density is only 40% of steel, high hardness () is 2.5 times that of steel), linear expansion coefficient is small (only 25% of steel, high elastic modulus () is 1.5 times that of steel), not conductive, non magnetic, corrosion resistance. Therefore, under the special conditions (high speed, high temperature, low temperature, high rigidity, high vacuum, corrosion medium) showed great superiority. In chemical indu. In chemical industry, pharmaceutical industry, food industry, electronic industry, wind power generation, petroleum industry, nuclear industry, widely used.
A: according to the material is divided into: ceramic bearings can be divided into the zirconia ceramic bearing, silicon nitride ceramic bearings, ceramic composite bearing.
Two: according to the structure: ceramic bearings can be divided into: zirconia ceramics with retainer bearing, silicon nitride ceramics for bearing, retainer belt holder ceramic bearing composite belt. General ceramic bearing retainer material with polytetrafluoroethylene (PTFE) as the standard configuration, also can adopt glass fibre reinforced nylon 66 (GRPA66-25), special engineering plastics (PEEK, PI), stainless steel (SUS316, SUS304), brass (Cu) etc.. Ceramic material holder for pocket hole processing, molding technology and other problems, still less used; due to cage material limits for special use occasions and developed without the full ceramic bearing ball zirconia and silicon nitride full ball full ceramic bearing device and composite full ceramic bearing ball.
Three: according to the integrity of the material is divided into: the main components of the ceramic bearing mentioned the inner and outer ring and a rolling body is made of ceramic material, defined as the full ceramic bearing; if the bearing rings and rolling bodies are not a part of ceramic materials are used when we define for hybrid ceramic bearing. The hybrid ceramic bearing used more widely is ball made of ceramic material called ceramic ball bearings, can be divided into the zirconia ceramic ball bearing, silicon nitride ceramic ball bearing.