What is a tensioner?

The tensioner is a commonly used holding device on the transmission system of belts and chains. Its characteristic is that it keeps the belts and chains in the transmission process with proper tension to prevent the belt from slipping, or to avoid tooth skipping and tooth loss of the timing belt Drag out.
Or it can prevent the chain from loosening and falling off, and reduce the wear of the sprocket and chain. The structure of the tensioner is diverse, which generally includes a fixed structure and an elastic automatic adjustment structure. The fixed structure mostly uses a fixed adjustable sprocket to adjust the tension of the belt and sprocket. The elastic automatic adjustment structure mostly uses elastic components. Automatic rebound controls the tensioning of belts and chains. China's self-adjusting chain tensioners mostly use spring structures, while foreign tensioners mostly use rubber parts.