| 摘要 |
<p>The mandrel has a cylindrical body (2) with a rear part having an orifice permitting introduction of a terminal of a rotating machine e.g. drill. A radial locking unit has a ring having tabs engaged with notches of a screw. Each tab has a cylindrical base extending transversally with respect to a plane of the ring and two folds extending from the base in exterior direction of the ring. A recess and the fold (34) are arranged for stopping the passage of inner and outer teeth into a locked position as long as the radial locking unit is not in the locked position.</p> |
