FAG bearings are widely used and strict supporting parts and basic parts in the machinery industry, which are called mechanical joints. The bearing has a simple structure and a complex interior. Its development not only needs to consider materials, manufacturing processes and application conditions, but also involves large-scale calculations and analysis. At present, most of the bearing industry uses traditional 2DCAD design methods, Excel-based calculations and pure 3D tools for structural design and analysis, and uses a simple bearing design system for Ru0026D. Therefore, the domestic bearing industry generally has low Ru0026D and innovation power and product reliability. And life can not meet the current technical requirements and other problems, but also low production capacity, the production of enterprises can not achieve scale effects. The processing process of imported bearing rings The processing of the imported bearing inner ring and outer ring varies according to the raw material or the form of the blank. The process before turning can be divided into the following three types. The whole processing process is: Bar stock Or pipe material (some bars need to be forged and annealed, normalized) ---- turning processing ---- heat treatment ---- grinding processing ---- fine grinding or polishing ---- final inspection of parts- ---Anti-rust---Storage---(To be assembled) Also, there are two most common ways to replace bearings: one is to directly heat the bearing with acetylene oxygen; the other is to heat the bearing directly. Small bearings are heated by oil immersion to achieve thermal expansion and expand the inner diameter of the bearing to facilitate assembly. These methods have been widely used in long-term equipment maintenance, basically satisfying and solving the bearing assembly problem in equipment maintenance. With the improvement of equipment and technical level, the import substitution of domestic enterprises such as ZWZ and Tianma has begun to expand from the field of yaw and variable pitch FAG bearings to main shaft bearings and gearbox bearings.