Traction unit tensioner for traction drive of internal combustion engine of motor vehicle such as motorcycle, has damping device which is provided between outer wall of piston and inner wall of housing

摘要

The tensioner (1) has a housing (2) that is provided with a piston (3) whose one end is contacted with clamping rail for deflecting traction unit such as chain or belt. A clamping device (9) is provided between the outer wall (8) of piston and inner wall (7) of housing, so that retraction of the piston is stopped in the housing. A damping device (10) is provided between outer wall of piston and inner wall of housing.