Pulley e.g. driven pulley, for belt integrated variable speed drive of e.g. lawn mower, has fixed side plate including metal coating on its surface arranged opposite movable side plate, where fixed plate and hub are formed as single piece

摘要

The pulley (1) has a return unit (5) i.e. helical spring, returning a movable side plate (3) in the direction of a fixed side plate (4), where the side plates are carried by a blind hollow hub (2). The movable side plate defines a variable-sized groove (6) with the fixed side plate, where a belt of a variable speed drive is inserted into the groove. The fixed side plate and the blind hollow hub are formed as a single piece from synthesis material. The fixed side plate has a metal coating (7) on its surface (8) arranged opposite the movable side plate.