The tensioner is a kind of belt tensioning wheel device widely used in automotive transmission systems. It is mainly composed of a fixed housing, a tensioning arm, a wheel body, a torsion spring, a rolling bearing, and a spring bushing. The tensioning force can be automatically adjusted according to the different degrees of belt tension, to make the transmission system stable and safe.
The tensioner is a wearing part of automobiles. The belt is easy to be stretched over time. Some tensioners can automatically adjust the tension of the belt. In addition, it can make the belt run smoothly, reduce noise, and prevent slipping. The function of the tensioner is to adjust the tightness of the timing belt, and it is usually replaced with the timing belt.