What materials are used in wheel bearings

Rolling bearing steel is mainly used in the manufacture of rolling elements and rings. Since the bearing should have a long life, high-precision, low heat, high speed, high rigidity, low noise, high wear resistance and other characteristics, thus requiring bearing steel should have: high hardness, uniform hardness, high elastic limit, high contact fatigue strength, toughness necessary, certain hardenability in atmospheric corrosion lubricant. To achieve the above performance requirements, bearing steel chemical composition uniformity, non-metallic inclusion content and type, carbide size and distribution of decarbonization and other demanding. Bearing steel development to quality, performance and overall direction of many varieties. To meet the high-temperature, high-speed, high load, corrosion, anti-radiation requirements, the need to develop a series of new bearing steel called special bearing with special properties. Along with economic development and industrial technological progress, expand the scope of application of the bearing; and the development of international trade, but also to promote the development and application of bearing steel to international standards and new technologies, new processes and new equipment, high efficiency, high quality, cost Low of supporting technology and process equipment came into being.