Mechanical transmission sealed chains tightness should be appropriate, too tight will increase power consumption, bearing easy to wear; Too loose the sprocket is prone to jumping and detaching. The tightness of the sprocket is: lifted or pressed from the middle of the sprocket, the center distance of the two sprockets is about 2%-3%. Sprockets mounted on the shaft should not swing and skew. In the same transmission component, the end faces of the two sprockets should be located in the same plane, and the center distance of the sprockets can be deviated by 1 mm when the center distance is less than 0.5 meters; When the center distance of the sprocket is more than 0.5 meters, it can be deviated by 2 mm. However, there can be no friction sprocket tooth side phenomenon, if the two wheels offset too much easy to produce chain and accelerated wear. When replacing the sprocket, attention must be paid to checking and adjusting the offset. After the sprocket is seriously worn, the new sprocket and the new sprocket should be replaced at the same time to ensure good engagement.

You can't just replace a new sprocket or a new sprocket separately. Otherwise, it will cause poor meshing to accelerate the wear of the new sprocket or new sprocket. Sprocket tooth surface wear to a certain extent should be turned over in time to use (refers to the adjustable surface of the sprocket) to extend the use of time. The new sprocket is too long or stretched after use, difficult to adjust, depending on the situation to remove the chain, but must be even. The chain link should pass through the back of the sprocket, the lock plate is inserted on the outside, and the opening of the lock plate should face the opposite direction of rotation. The sprocket should be filled with lubricating oil in time during work. The lubricating oil must enter the matching gap between the roller and the inner sleeve to improve working conditions and reduce wear. The old sprocket can not be mixed with part of the new sprocket, otherwise it is easy to have an impact in the transmission and break the sprocket. When the machine is stored for a long time, the sprocket should be removed and cleaned with kerosene or diesel oil, and then coated with oil or butter and stored in a dry place. Sprocket tooth shape must ensure that the chain energy and smoothly enter and exit the engagement, minimize the impact and contact stress of the chain link when meshing, and be easy to process.

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