Tensioner for power transmission chain - has housing containing cylindrical bushing with plate fixed to one end, and plastics block and guide

摘要

The tensioner (30) has a housing (31) containing a cylindrical bushing moving in a lengthwise direction, and a spring for exerting pressure on the busing (33) so that it protrudes outside the housing (31). - The outer end of the bushing has a plate (34) fixed to it on which has a plastic block (35). A guide (24) is touched by the block (35).