Materials used in bearing agent to introduce the product technical standard

Materials used in bearing agent to introduce the product technical standard bearing ring and rolling body material: ring and rolling body usually use high carbon chromium bearing steel. Most of the bearing, using JIS the SUJ2 steel grade, is domestic chrome steel ( GCr15) 。 The chemical composition of SUJ2, around the world, as a bearing material has been normalized. For example: with AISL52100 ( The United States) DIN100Cr6 ( West Germany) BS535A99 ( The UK) All belong to the same steel. The steel grade, according to the special purpose, also use the excellent heat resistance of high speed steel, good corrosion resistance of stainless steel. Detailed visible stainless steel bearing. Bearing retainer materials: punch retainers material, using low carbon steel. According to different purposes, also used brass, stainless steel plate. Cutting system maintains a material, the use of high-intensity brass, carbon steel, and also the use of synthetic resin. 1. Crown cage: put the ball into the special when it is assembled with ball mouth can, in the case of low speed has a lower starting torque, flexible rotation. 2. Ribbon cage: a combination with and without paw paw, most of the 304 or 316 stainless steel materials, suitable for medium speed. 3. Phenolic cage: suitable for high speed, have the function of self lubricating, widely used in dental drill bearings. Bearing bearing steel technical standards: main implement GB/T18254 - bearing steel production 2002 standard and suitable for precision forging bearing user requirements of baosteel GCr15JD quality agreement, including strict quality in GB/T18254 - GCr15JD agreement 2002 standard, GCr15JD require oxygen levels 10 PPM or less, center segregation level 1 or less. Level 0, composition control, scale and dimension deviation in GB/T18254 - yan 2002 standard. In order to meet the above requirements, the performance of the dynamic bearing to the bearing steel material is put forward the following some basic performance requirements: 1, contact fatigue strength of high 2, should have high hardness after heat treatment or can satisfy the requirement of bearing performance of three hardness, high wear resistance, low friction coefficient of 4, high elastic limit 5, good impact toughness and fracture toughness, good dimensional stability, good rust resistance, July 8, good cold and hot working performance