1. The tightness of the sprocket should be appropriate. Too tight will increase power consumption and the bearings will wear out easily; too loose the sprocket will easily jump and fall off the chain.The degree of tightness of the sprocket is: lifted or pressed down from the middle of the sprocket, which is about 2%-3% of the core distance between the two sprocket.

2. The sprocket should not swing or skew when installed on the shaft. The end faces of the two sprocket in the same transmission assembly should be in the same plane. When the core distance of the sprocket is less than 0.5 meters, the deviation can be 1 mm; in the sprocket When the core distance is more than 0.5 meters, the deviation can be 2 mm.However, there must be no friction on the side surfaces of the sprocket teeth. If the two wheels offset too much, it will easily cause chain disconnection and accelerated wear. Pay attention to check and adjust the offset when replacing the sprocket.

3. After the sprocket is severely worn, it should be replaced with a new sprocket at the same time to ensure good meshing.You can't just replace it with a new sprocket alone, otherwise it will cause poor meshing and accelerate the wear of the new sprocket. When the sprocket is worn to a certain degree, it should be turned over and used in time to extend the use time.