Single row angular contact ball bearings can only bear axial load in one direction. When the bearings are subjected to pure radial load, because the rolling body load line and radial load line are not in the same radial plane, the internal axial component force is generated, so the utility model must be installed and used in pairs.
A pair of angular contact ball bearings is designed to withstand both radial and axial loads, as well as pure radial loads and axial loads in either direction. This kind of bearing is provided by the manufacturer according to certain preload requirements, and matched and matched in pairs to be supplied to users. When the bearing is mounted on the machine, the clearance in the bearing is completely eliminated, and the ring and the ball ball are in the pre tightening state, thereby improving the steel property of the combined bearing.