Handpiece for a medical or cosmetic processing device

A handpiece (100) for a medical or cosmetic processing device, having:

• a connection line (102) at a connecting end (101);
• a housing (104) in which a receptacle space is provided between the connecting end (101) and a processing end (103), a rotary drive unit for driving a rotary tool (210) that is attachable to the processing end (103) being able to be received in said receptacle space,
• characterized in that the handpiece (100) is able to be separated from the connecting end (101), wherein the handpiece (100) is designed such that a motor (110) upon decoupling of the housing (104) remains on the connecting end (101);
• the handpiece has a rotary clamping device (120) in which the rotary tool (210) is able to be attached;
• and wherein the rotary clamping device (120) in the direction of the processing end (103) and in the direction of the connecting end (101) of the handpiece (100) is locked and mounted by means of locking elements (141, 142, 147), bearings (125, 143) and springs (144).