Bearing is the support of rotating shaft or movable parts of various machinery, which is widely used in agricultural machinery such as agricultural automobiles, tractors, diesel engines, motors, threshers and so on. Bearing codes are commonly used in selecting bearings, but bearing codes are complicated. If we grasp the rules of identifying agricultural bearings codes, it will be easy to choose and buy them.

Commonly used bearings are some standard models; code number is “0”; tolerance grade is “G” (common grade).

Generally, the first segment of a bearing can not be written, so its code number is usually expressed in seven digits of the basic code. Choose bearings with multi-reference bearing inner diameter, bearing inner diameter in the basic code with the right end of the first and second digits. Bearing inner diameter is divided into standard and non-standard inner diameter. The difference between non-standard inner diameter and non-standard inner diameter is not an integer or an integer multiple of five.

In the use of agricultural bearings, steel balls and grooves are worn and the clearance is too large, resulting in radial and axial sloshing, which should be replaced in time. If individual balls wear seriously, the lighter wear and no pitting steel balls can be removed and replaced on the same type of old bearings. At the same time, it should be stipulated to add lubricating oil. The self-aligning bearing sealed at both ends does not need to be filled with lubricating oil during use. It should be unloaded after the end of the operating season and lubricated by grease injection from the small holes in the sealing cover.

When loading and unloading bearings, they should not be hard knocked and smashed. Special attention should be paid to not knocking on the outer jacket of bearings and lightly tapping on the inner ring of bearings.