The new toothed chain is a toothed chain with internal and external compound meshing, which is mainly composed of a chain plate, a guide plate and a pin. Based on the improved performance of the traditional toothed chain, the new toothed chain is suitable for high-speed operation, variable speed operation and variable load work, reducing the noise of operation, but also reduce the effect of the toothed chain polygon, improve the efficiency of transmission. The new toothed chain is compatible with the advantages of the internal and external compound meshing toothed chain. In the process of internal and external meshing, the inner and outer gear profiles of the chain and the busbars on both sides of the pin shaft and the two sides of the chain pin hole are alternately loaded, thus reducing the wear of the toothed chain pin and the chain, and also reducing the wear of the sprocket teeth of the toothed chain.

The performance of the new toothed chain is improving and the wear is decreasing, but the wear of the toothed chain is still relatively serious. In the way of reduction, we can start from two aspects. First, improve the hardness of the pin surface, reduce the roughness of the pin surface, can effectively improve the wear resistance of the tooth chain. Second, under the lubrication condition containing medium, the wear of the new toothed chain is mainly abrasive particles, but there will be mild wear and fatigue; Choose a chain plate with a relatively high bainite content, at 70%-80% is appropriate, so that the toothed chain has a strong resistance to fatigue wear and anti-abrasive wear.