The features of precision thrust ball bearing are as followings: It can only afford axial load, belonging to separable bearing. This kind of bearing has high accuracy, if matched with radial bearing, they can achieve the perfect transmission. When SanTai produces bearings with level above P5, they both use low temperature processing and high-temperature tempering craftsmanship. By this kind of craftsmanship, the internal stress is further eliminated and the internal organization is stabled, it can enlarge the range for bearings’ using temperature and greatly improve the products’ accuracy maintain life.