The following is the abbreviation () to introduce the allowable external axial load of the preload. Due to the influence of the bearing working state and the external environment, the bearing seat The size and bearing components will also change accordingly, which will affect the preload state of the bearing. 4. 5.66F0, FaB=1.3, QBC and DBT type For the quadruple bearing assembly shown in Figure 1, the relationship between the external load and the minimum preload can also be solved according to the above method. The assembly forms are shown in Figure 1. After calculation, the QBC type bearing assembly is FaA= 5. Under the action of preload F0, the inner ring end faces of bearing A and bearing B will fit together, and their axial displacements are respectively To The influence of external axial load on the axial displacement of the pre-tightened bearing set is shown in Figure 4. Table 1 shows the unloading force of different contact angle bearing assemblies and the same contact angle bearing assembly.85F0. Under the external load Fa, bearing A is the load-bearing end, Bearing B is unloaded at this time, so FaA is the unloading force in this state, and the total displacement of bearing A is Combining formulas (5)~(7), we get FaA=5.; according to the direction of assembling the bearing.9 times the preload F0, otherwise the bearing A will be unloaded, leading to premature failure of the bearing. Different classifications. For angular contact ball bearings bearing pure axial load Fa, the maximum load on the ball is: According to Hertz contact theory, the axial displacement of an angular contact ball bearing under pure axial load is: To Substituting (1) into (2), we get: To 3. Determine the impact load in bearing applications. The conclusion can be seen: 1) Angular contact ball bearings can China Clutch Release Bearing manufacturers not only be assembled with bearings with the same contact angle, but also can be assembled with bearings with different contact angles, and the assembly methods are various.