CTC/NT Type Automatic Chain Tensioners are mechanical devices to maintain the correct tension in a chain drive and thus increase its life. In automatically compensating for chain stretch the CTC/NT Automatic Chain Tensioner also considerably reduces drive vibration and noise. The CTC/NT Automatic Chain tensioner is truly ‘fit & forget’ enabling high drive reliability and very low maintenance costs. The unit consists of an Aluminium body with two bushed, spring-loaded, Zinc plated Steel shafts sliding inside the sealed body. The tensioning head with its unique low drag, low wear profile is made of Ultra High Molecular Weight Polyethylene.