What are the functions of various types of bearings

Bearings can be divided into many types, such as rolling bearings, radial bearings, ball bearings, thrust bearings, and so on. In terms of its function, it should be a support, which is literally used to support the shaft, but this is only a part of its function. The essence of support is to be able to bear radial loads. It can also be understood as being used to fix the shaft. It is to fix the shaft so that it can only rotate and control its axial and radial movement. The consequence of motors without bearings is that they cannot work at all. Because the shaft may move in any direction, and the motor requires the shaft to only rotate during operation.