There are both axial force and radial force of the bearing optimization problem

About a both axial force and radial force of the shaft, the angular contact ball bearing seems to be the most popular at present. Because the angular contact ball bearings can bear radial load, also can carry axial load. But its ability to bear radial load as deep groove ball bearings. Motor is the most commonly used bearing deep groove ball bearings and cylindrical roller bearing. They belong to a radial bearing, mainly bear radial load. For deep groove ball bearings, have certain axial bearing capacity at the same time, the maximum carrying capacity for the radial usually rated dynamic load of a quarter. In the motor, how to choose a bearing type, it is according to the size and direction of the motor load. When the axial load is not particularly big, you should use deep groove ball bearing: when radial load is very big, cannot satisfy the need that deep groove ball bearings, cylindrical roller bearing should be used. With a radial ball bearing and a common combination instead of angular contact ball bearing thrust bearing is also an efficient way. When the axial load increases, so that greater than deep groove ball bearing load capacity, the selection of angular contact ball bearings. If it exceeds the ability of the angular contact ball bearing, want to choose other kinds of bearings, such as spherical roller bearings, thrust ball bearings, thrust roller bearing, spherical roller thrust bearing, etc. Said above is a matter of principle, implementation to the operation, the corresponding calculation is needed. What is beyond the scope of its power is not to say that the load is greater than the sample list, or less than what is qualified. Should put the bearing support convert equivalent load, and then check the bearing life, when meet the need for qualified.