| 摘要 |
The tool (2) has rotating and/or impact drive and extends within a max. guide diameter (D). It has a locking groove (5) in an axial locking end (3), and drive grooves (6) with at least one tangential force contact face (7). At least two drive grooves with a length (L) of at least three times the guide diameter, are positioned in front of the locking end on the tool side. The grooves are wider than 1/5 of the guide diameter, by a contact length (K), which is at least 1,5times the guide diameter. There are at least three mirror-symmetrically positioned drive grooves, and two diametrically offset locking grooves, which merge into the drive grooves on the tool side. |
