TENSIONERS TAKE THE SLACK IN CHAIN AND BELT DRIVES.

Through use, belts and chain elongate, causing slipping and loss of horsepower. Slipping belts cause cover wear, burn spots, and overheating. As a chain drive wears and elongates, slapping and vibration increase, and the resulting shock loads cause excessive bearing wear. One can keep that chain or belt at the original tension with a drive tensioner. Generally, tensioners fall into these categories: Fixed, adjustable, and automatic. The particular application dictates which type one should use.