System with implement holder, especially grinding disc has detent movably mounted against spring force, with hub ad axial protuberance

摘要

The implement is connected to a holder by means of at least one detent element movably mounted against a spring element. The detent fixes the implement which is prevented from being laterally reversed by at least part (20') of an implement holder, with corresponding coding. The implement has a hub (40) with axial protuberance (30')