Method of installing angular contact ball bearings in pairs

Angular contact ball bearings installed in pairs can bear radial and axial two-way combined loads dominated by radial loads, and can also bear pure radial loads. The tandem configuration can only accommodate axial loads in one direction, while the other two configurations can accommodate axial loads in either direction. This type of bearing is generally selected and combined by the manufacturer and submitted to the user. After installation, there is preload interference, and the ring and steel ball are in an axial preload state, thus improving the rigidity and rotation of the entire set of bearings as a single support. precision.
In a back-to-back arrangement, the load lines of the back-to-back pair of bearings are separated toward the bearing shaft. Axial loads acting in both directions can be accommodated, but loads in each direction can only be supported by one bearing. Bearings mounted back-to-back provide a relatively rigid bearing arrangement and can withstand overturning moments.
In a face-to-face arrangement, the load lines of the face-to-face paired bearings converge toward the bearing shaft. Axial loads acting in both directions can be accommodated, but loads in each direction can only be supported by one bearing. This configuration is not as rigid as a back-to-back pair and is less suited to withstand overturning moments. The rigidity of this configuration and the ability to bear the overturning moment are not as good as the DB configuration, and the bearing can bear bidirectional axial load;
Series configuration, when in series configuration, the load lines are parallel, and the radial and axial loads are evenly shared by the bearings. However, the bearing set can only accommodate axial loads acting in one direction. If the axial loads act in the opposite direction, or if there are compound loads, it is necessary to add a third bearing adjusted relative to the tandem pair. This configuration can also connect three or more bearings in series at the same support, but it can only bear axial load in one direction. Usually, in order to balance and limit the axial displacement of the shaft, a bearing capable of bearing axial load in the other direction needs to be installed at the other support.