Single-row angular contact ball bearing is mainly used when the combined radial and axial loads are carried at the same time, and sometimes it can also be used for pure bearing loads, and the operating speed is high. The material of the bearing ring parts is selected from high-quality refined bearing steel GCr15 and other grades of bearing steel, and the steel ball adopts GCr15 or ceramic ball; According to the different contact angles, it can be divided into 7000C (15°), 7000AC (25°), 7000B (40°), and bearings with different contact angles can be produced according to user requirements.