China has a relatively complete bearing industry chain resource. Our country has developed basic industries and has a relatively complete layout for the upstream and midstream of the bearing industry. The upstream of the bearing industry chain consists of metal materials such as bearing steel and stainless steel, non-metallic materials such as modified plastics, and components such as bearing rings. The midstream of the industrial chain is for bearing manufacturing, with bearing products mainly including automotive bearings, engineering machinery bearings, shield bearings, wind power bearings, etc. The downstream application areas of the bearing industry's industrial chain are widely distributed in industries such as automobiles, robots, home appliances and motors, textile machines, agricultural machinery, engineering machinery, wind power, etc., supporting the stable demand of the bearing industry.
The upstream bearing ring market has a large scale and low industry concentration. Bearing rings are the most valuable spare parts in bearings, and according to data from the China Heat Treatment Industry Association, their cost accounts for 35% of the cost of finished bearings.
Bearings are a type of component used to support mechanical transmission shafts, mainly divided into rolling bearings and sliding bearings. From a structural perspective, rolling bearings are mainly composed of raceway rings, rolling elements, cages, and other parts, while sliding bearings have a simpler structure and mainly achieve support function through sliding friction. Therefore, compared with sliding bearings, rolling bearings have lower friction, smoother rotation, and lower energy consumption. Bearings are subjected to forces from different directions in daily life, which are called "loads" and mainly divided into radial and axial types. The force perpendicular to the shaft is called radial load/radial force, and the force in the same direction as the shaft is called axial load/axial force.
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