A manufacturer of double-end face grinders introduces their application in the bearing industry. Rolling bearings generally consist of an outer ring, inner ring, rolling elements, and a cage. The bearing rings (including the outer and inner rings), as a major component of rolling bearings, are also the most complex and require higher precision.
Domestically, imported double-end face grinders are often used to process the end faces of bearing rings, or domestic machine tools are used for rough machining followed by import machine tools for finish machining. The type of bearing ring blank varies depending on the bearing material, precision grade, and load-bearing capacity, mainly including forgings, cold extrusions, warm extrusions, tubes, and bars, with forgings accounting for approximately 85%.
Currently, domestic manufacturers mostly produce bearing ring blanks using hot forging. To reduce the machining allowance during finish machining, the forged blank is generally turned before grinding. For complex rings with high precision requirements, CNC lathes are generally used to complete the machining of features such as the inner ring, outer ring, and raceway in one clamping. This avoids clamping errors caused by multiple clampings and ensures the uniform distribution of the relative positions of the features and the machining allowance.
