Most of the agricultural machinery used are: deep groove ball bearings, outer spherical bearings, tapered roller bearings and so on.

There are two main aspects to the selection of bearings: One is to choose the type of bearing. Roughly consider the magnitude and direction of the load, whether there is an impact? Factors such as high or low speed, centering requirements, and allowable space. The second is to choose the accuracy of the bearing. Generally, the mechanical type and mechanical precision requirements should be considered. There are many types of agricultural machinery. The general situation is that the working conditions are poor, and the field work is especially bad. Therefore, the selection of the type of bearing is very important, which directly affects the reliability index of the operating machinery. In our lives, these agricultural machinery will use all kinds of bearings, and the representative machinery of many agricultural machinery is a tractor. Tractors are used as traction machines to cultivate fields, plant seeds, disperse fertilizers and pesticides by connecting various Industial machine toolss to the front and rear power units.

Bearings are used in many parts of tractors, such as gearboxes, chassis and engines, and most bearings are used in muddy water and heavy load conditions. In addition, in Europe and the United States, machines have become larger and larger due to use on large areas of arable land, and the conditions for using bearings have become stricter. In this case, customers require bearings with high reliability and cost-effectiveness. With the development of foreign agriculture, and the introduction of these developed bearings in China, the bearings commonly used in agricultural machinery are: single row deep groove ball bearings are the most representative of rolling bearings and can be widely used.