In Xuzhou slewing bearing products, the proportion of high-precision, high-tech and high value-added products is relatively low, and high-end slewing bearings still rely on imports. In terms of slewing bearing manufacturing technology, most of Xuzhou slewing bearing companies have slow development of manufacturing process and equipment technology, and the numerical control and automation of processing equipment are relatively low; the heat treatment process and equipment critical to the life and reliability of slewing bearings needs to be improved. The research and development of new materials required for slewing bearings and the research and development of other auxiliary materials and processes cannot meet the requirements for slewing bearing product levels and quality. As a result, the process capability index is low, the consistency is poor, the dispersion of product processing dimensions is large, and the intrinsic quality of products. Instability affects the accuracy, performance, life, and reliability of the slewing ring.