Rotary tool, particularly a drill, and a cutting head for such a rotary tool

A rotary tool, in particular a drill, which extends in an axial direction along an axis of rotation and comprises two coupling parts, namely a carrier and a cutting head with a front end surface, and the cutting head is interchangeably attached to the carrier, wherein

• the carrier comprises on its end surface fastening webs by means of which a pin receptacle is delimited,
• a coupling pin of the cutting head is inserted into the pin receptacle by rotating the cutting head relative to the carrier,
• shell surfaces corresponding to one another are formed on the coupling pin and on the fastening webs for radial centering and for transmitting a radial clamping force,
• torque surfaces corresponding to one another are formed on the cutting head and on the carrier for transmitting a torque,
• in order to prevent pulling-out in an axial direction, stop surfaces are formed on the pin receptacle and on the coupling pin, the stop surfaces being effective in an axial direction,
• wherein
• each stop surface of the coupling pin is adjoined by a lateral surface which freely tapers off in the direction toward the end surface, as viewed in the axial direction.