The design of double-row angular contact ball bearings is basically the same as single-row angular contact ball bearings, but it only takes up less axial space. Double-row angular contact ball bearings can withstand radial loads and axial loads acting in two directions. It can limit the axial displacement of the shaft or housing in two directions. The contact angle is 30 degrees. Can provide high rigidity bearing configuration, and can withstand overturning moment.