Quick-change tool holder system for a cutting tool

A quick-change tool holder system, comprising:

• a base part having a quick-change tool holder receptacle and a supporting projection having an outer side wall in a radial direction (R);
• and
• a quick-change tool holder configured for insertion into the quick-change tool holder receptacle and comprising a cutting tool receptacle configured for receiving a round-shaft pick with the cutting tool receptacle having a longitudinal axis (A1),
• wherein the quick-change tool holder has a bearing body and a base gripping part which protrudes radially in relation to a direction of insertion (B) of the quick-change tool holder in the base part and which projects in the direction of insertion (B), which base gripping part grips the supporting projection on the base part in an inserted state,
• wherein the base gripping part has a contact surface for contact with the outer side wall of the supporting projection, with the contact surface being planar and extending along an axis that runs obliquely to the longitudinal axis (A1) and intersects with the longitudinal axis (A1) at an angle (α) of greater than 0° and up to 15°, and
• wherein the supporting projection is undercut in a direction of insertion (C).