| 摘要 |
The boring tool (10) has a large drill (12), particularly a crown drill, in which a center drill (14) is guided in an axially movable manner. The axial movement of the center drill relative to the large drill is limited by a stop. A dowel (24) is formed at a mounting body (26) and has a bearing surface, which is adjoined to a counter bearing surface of the boring tool. |
