Transmission bearings are mechanical components composed of an eccentric mechanism, an internal gear ring, and a transmission ring located between the two. They are made of medium carbon quenched and tempered steel and are mainly used to support mechanical rotating bodies, reduce the coefficient of motion friction, and ensure rotational accuracy. According to their frictional properties, rolling bearings can be divided into rolling bearings and sliding bearings. Rolling bearings consist of an outer ring, an inner ring, rolling elements, and a cage. The difference in rolling element shape forms two major categories: ball bearings and roller bearings. The variable speed transmission bearing integrates support and variable speed functions, and achieves fixed transmission ratio reduction through components such as irregular bearings and double eccentric sleeves. This bearing is widely used in port lifting equipment In terms of its function, it should be support, which literally means it is 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. The automatic selection of quick and easy bearings is included. It is to fix the shaft so that it can only rotate, while controlling its axial and radial movement. If the motor does not have bearings, it cannot work at all. Because the shaft can move in any direction, and the motor requires the shaft to only rotate during operation. In theory, it is impossible to achieve the function of transmission. Moreover, bearings can also affect transmission. In order to reduce this effect, good lubrication must be achieved on the bearings of high-speed shafts. Some bearings already have lubrication, called pre lubricated bearings, while most bearings must have lubricating oil, which is responsible for not only increasing energy consumption due to friction during high-speed operation, but also easily damaging the bearings. The statement that transforms sliding friction into rolling friction is one-sided, as there are sliding bearings present
