Tensioner for a continuous drive chain/belt has a hydraulic system with a force from the difference of hydraulic force on the spring and tensioning sides of the sprung piston

摘要

The tensioner for continuous drive chains and belts has a tensioning piston (3) held under pressure of a spring (18), and a hydraulic system which acts on the piston simultaneously on the spring side (27) and the tensioning side (28). The hydraulic tensioning force is a difference from the hydraulic forces on the spring and tensioning sides.