Advance on surface finishing technology of precision bearing cylindrical rollers

Precision bearings are key components of mechanical equipment, and their quality almost restricts the overall development level of key technologies in the equipment manufacturing industry. As the critical element of precision bearings, the surface quality of rollers significantly affects their operational performance, reliability, and fatigue life. The development of surface finishing technology for rollers is a practical solution to improve their surface quality. However, there is a lack of systematic exposition of the research status and development direction of this technology. This study provides a comprehensive review and summary of the existing surface finishing technology for cylindrical rollers. First, the article introduces the impact of surface integrity on bearing performance. Second, it provides a comprehensive classification and summary of the current surface finishing technologies for cylindrical rollers, which include centerless grinding, superfinishing, electrochemical mechanical finishing, magnetic fluid grinding, double-side lapping, double-disc straight groove grinding, shear thickening polishing, and mass finishing. Third, the surface roughness and roundness error ranges achieved by different finishing technologies are quantitatively compared, and their processing characteristics are comprehensive compared. Finally, the article forecasts the future development trend of surface finishing technology for cylindrical rollers.