MATERIAL: Aluminum. Spring and sliding bushing made of steel.
TREATMENTS: Aluminum parts are sand blasted, zinc-plated bushing. Untreated greased springs.
USE: Rotational elastic element generally used as chain/belt tensioner or pressure group. Rotational working angle ±45°; maximum rotation angle ±60°. The central bushing is used to preload the tensioner using an hex key. Fastening has to be done with a screw inside the threaded hole in the bushing. Operating field: -30°/+130°.