The sprockets should be mounted on the shaft without any skewing or wobble. In the same transmission assembly, the end faces of the two sprockets should be in the same plane. When the center distance between the sprockets is less than 0.5 meters, a deviation of 1 mm is permissible; when the center distance is greater than 0.5 meters, a deviation of 2 mm is permissible. However, friction on the sides of the sprocket teeth is not allowed. Excessive misalignment between the two sprockets can easily cause chain slippage and accelerated wear. When replacing sprockets, the misalignment must be carefully checked and adjusted.
The chain tension should be appropriate. Too tight a chain increases power consumption and causes premature bearing wear; too loose a chain can cause jumping and slippage. The appropriate chain tension is when, when the chain is lifted or pressed down from the middle, the center distance between the two sprockets is approximately 2-3 cm.
If a new chain is too long or has stretched after use and is difficult to adjust, chain links can be removed as needed, but the number of links must be even. The chain links should pass through the back of the chain, with the locking plate inserted on the outside, and the opening of the locking plate facing the opposite direction of rotation.
When sprockets are severely worn, both the sprocket and chain should be replaced simultaneously to ensure proper meshing. Do not replace only the chain or sprocket, as this will cause poor meshing and accelerate wear on the new chain or sprocket. When the sprocket teeth are worn to a certain extent (referring to sprockets with adjustable teeth), they should be flipped over for reuse to extend their service life.
Old chains should not be mixed with partially new chains, as this can easily cause impact during transmission and break the chain.
The chain should be lubricated regularly during operation. The lubricating oil must penetrate the clearance between the rollers and the inner sleeve to improve working conditions and reduce wear.
For long-term machine storage, the chain should be removed, cleaned with kerosene or diesel oil, then coated with machine oil or grease and stored in a dry place to prevent rust.
