Overview Reviews Product Description Chain and belt life are increased with proper tensioning to reduce chain and belt "slap". Tensioners provide noise and vibration dampening. These all enclosed tensioners are maintenace free. Tensioners are self-adjusting. Power-Link Catalog Product Videos Custom Field Mounting bolt M20 Operating angles -30 to +30° Fits chain series 80, 100 & 120 Country of origin Italy Product Reviews Write a Review Write a Review × Power-Link Sheave/Sprocket/Roller Tensioner Arm PLI645 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *