INSERTION END FOR A ROTARY AND A PERCUSSIVE TOOL

摘要

An insertion end (1) of a tool (2) driven along an axis (A) at least partial ly rotary or percussively, which extends along the axis (A) within a maximum guide diameter (D) and at least one axially closed locking groove (5) and rotary driving groove (6) axially closed at an axial locking end (3) towards the free leadi ng end (4). The rotary driving groove has a groove width (B) with at least one tangential force contact surface (7). At least two rotary driving grooves (6) have a length (L) of at least three times that of the guide diameter (D) are arranged on the tool - side ahead of the axial locking end (3) and have a contact length at least 1 .5 times the guide diameter (D) configured wider than a fifth of the guide diameter (D).