FAG bearings are widely used in the machinery industry and require strict accessories and basic parts, known as mechanical joints. The structure of the bearing is simple and the interior is complex. Its research and development not only needs to consider the material, manufacturing process and application conditions, but also involves large-scale calculation and analysis. The current bearing industry mostly uses traditional 2DCAD design methods, Excel-based calculations, and structural design and analysis of pure 3D tools, and uses a simple bearing design system for research and development. Therefore, the domestic bearing industry generally suffers from low R&D and innovation and product reliability. And life can not meet the current technical requirements and other issues, but also low production capacity, enterprise production can not achieve economies of scale.

The processing process of the imported bearing ring and the processing of the imported bearing inner ring and outer ring are different according to the raw material or the blank form. Among them, the process before turning can be divided into the following three types, and the entire processing process is: Bar material Or pipe material (some bars need to be forged, annealed, and normalized)—-turning—-heat treatment—-grinding—-finishing or polishing—-parts final inspection- —rust prevention—-storage—-(to be assembled)

In addition, there are two most common methods for replacing bearings: one is to directly heat the bearing with acetylene oxygen; the other is to use oil immersion heating for small bearings to achieve thermal expansion and expand the inner diameter of the bearing for easy assembly. These methods have been widely used in long-term equipment maintenance, and basically meet and solve the problem of bearing assembly 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 pitch FAG bearings to main shaft bearings and gearbox bearings.