What are the effects of surface treatment on bearings rings

Surface treatment plays a vital role in the bearing ring manufacturing process, which directly affects the friction, wear, corrosion resistance and overall performance of the bearing ring.

Surface finish:

Surface finish refers to the flatness and smoothness of the bearing ring surface. High-quality surface finish can reduce the friction coefficient of the bearing ring, reduce energy loss, and facilitate the formation and maintenance of lubricating oil film. Through surface treatment processes such as precision grinding and polishing, a high-gloss surface can be obtained, thereby improving the performance of the bearing ring.

Surface hardness:

Surface hardness is one of the important indicators for a bearing ring to resist wear and scratches. The surface hardness of the bearing ring can be improved through heat treatment, nitriding and other methods, thereby extending its service life. The higher the surface hardness, the stronger the bearing ring's ability to resist wear and load during operation, improving the reliability and stability of the entire bearing system.

Surface roughness:

Surface roughness directly affects the contact area and friction performance of the bearing ring. Excessive surface roughness will increase the friction coefficient of the bearing ring, intensify friction and wear, and reduce the life of the bearing ring. Therefore, the surface roughness can be controlled within a certain range through fine machining and surface treatment, thereby improving the performance of the bearing ring.

Surface lubricity:

Surface treatment can improve the surface lubricity of the bearing ring, help form a uniform lubricating film, and reduce friction and wear. For example, by plating or applying special lubricants, a lubricating film can be formed on the surface of the bearing ring to reduce the friction coefficient and improve the operating efficiency and reliability of the bearing ring.

Corrosion resistance:

Surface treatment can also improve the corrosion resistance of the bearing ring and extend its service life in harsh environments. For example, plating, coating or special chemical treatment can be used to form an anti-corrosion protective layer on the surface of the bearing ring to prevent the erosion and corrosion of the bearing ring by external media and improve its durability and reliability.

Shape stability:

Proper surface treatment can improve the shape stability of the bearing ring and reduce the possibility of deformation and distortion. For example, heat treatment can homogenize the internal structure of the bearing ring, reduce internal stress, and improve its shape stability, thereby ensuring that the bearing ring maintains a good geometric shape during work and ensures the normal operation of the bearing.