Electrical handheld core drilling device

A handheld core drilling device, comprising:

• a tool receptacle for receiving a diamond drill bit, wherein the tool receptacle has a receiving sleeve and a tool receiving piece disposed in the receiving sleeve and wherein the tool receiving piece is drivable around an axis of rotation;
• and
• a compression spring arrangement disposed within the receiving sleeve, wherein the compression spring arrangement supports the receiving sleeve and the tool receiving piece resiliently against each other;
• wherein the receiving sleeve has a central insertion opening through which an insertion end of the diamond drill bit is insertable into the tool receiving piece;
• wherein exactly three equally spaced retaining tabs are formed on the receiving sleeve along a circumferential direction and wherein each retaining tab has a respective stop surface that faces the tool receiving piece;
• wherein exactly three equally spaced bearing surfaces are formed on the tool receiving piece along a circumference of the tool receiving piece and wherein each bearing surface faces a respective stop surface;
• wherein each of the bearing surfaces includes a stud with a stud surface;
• wherein the stud surfaces in a radial direction are at most half as wide as the bearing surfaces in the radial direction;
• wherein the studs each have a plateau which is spaced from the respective bearing surface, wherein the respective stud surface defines a stud tip which extends starting from the plateau in a direction toward the respective retaining tab.