ELECTROPNEUMATIC PERCUSSION DRILL

1. An electropneumatic rotary percussion drill hammer, in which the anvil (22) impinging on the tool shank is guided in an axially slidable manner in the spindle sleeve (2) which accommodates the tool (9) and is rotated, and the spindle sleeve (2) contains two through holes (5, 5') arranged displaced with respect to each other in the peripheral direction for the mounting of locking elements (11, 11') for the locking and release of a tool shank provided with corresponding recesses (10, 10') and the driven side end region of the spindle sleeve, which sleeve projects out of the housing of the rotary percussion drill hammer, has a threaded section (3) for mounting a tool mount (8) equipped with a corresponding nut (12), and to which is connected a hollow cylindrical guide part, which is provided with through holes (5, 5') for the mounting of the locking element (11, 11') and has at least one recess (7, 7') for retaining the adjustment sleeve (13) when the tool (9) is locked, wherein the guide part (4) is provided with at least one longitudinal groove (6) arranged spatially displaced in the peripheral direction with respect to the through holes (5, 5') for the locking elements (11, 11'), which longitudinal groove (6) is open at the drive end on the guide part (4).