Hammer drill and/or chipping hammer (100) having a drive motor (70), an impact mechanism (10) and a tool fitting (50) for fitting a tool (110), wherein the impact mechanism (10) has an anvil (30) that is axially displaceable in an anvil guide (20) and acts on the tool (110), wherein the impact mechanism (10) is equipped with an idle-strike damper element (11) and a rebound-strike damper element (13), wherein the idle-strike damper element (11) and/or the rebound-strike damper element (13) is/are integrated on the anvil (30).

A power tool, in particular a chipping hammer, containing a tool-fitting element for receiving and holding a tool, in particular a chisel, and an apparatus for selectively turning the tool-fitting element. The apparatus contains an impact-mechanism housing having a connecting device, a coupling element having an attachment device, and an uncoupling element for reversibly separating the coupling element from the impact-mechanism housing, wherein the coupling element is settable reversibly in a first or second position, and wherein, in the first position, the coupling element is connected releasably to the impact-mechanism housing such that the tool-fitting element is prevented from turning about an axis of rotation and, in the second position, the coupling element is movable relative to the impact-mechanism housing such that the tool-fitting element is able to be turned about an axis of rotation relative to the impact-mechanism housing.

A tool bushing of a breaking hammer, a tool bushing arrangement, a breaking hammer and a method of mounting a tool bushing of a breaking hammer are disclosed. The tool bushing is a sleeve-like piece having a multi-shouldered outer surface with three or more successive cylindrical portions. The cylindrical portions have different diameters that match with corresponding surfaces of a bushing housing when the tool bushing is mounted. Diameters of the bushing and the bushing housing are dimensioned so that friction forces are generated when the bushing is assembled.

Electric hand-held power tool, in particular a hammer drill and/or rotary hammer, having a function setting tube, which can be actuated via a manual function selector switch to bring about various operating modes, a guide tube equipped with a tool fitting, and having a ball-type latching clutch for transmitting a rotary movement from the function setting tube to the guide tube, wherein the ball-type latching clutch has a radial aperture formed in the function setting tube, a main latching depression formed in the guide tube, a coupling ball mounted in the radial aperture and intended to engage in the main latching depression, and a spring-loaded cone ring against whose actuating force the coupling ball can deflect in the radial direction, wherein the guide tube has formed therein an auxiliary depression that is different from the main latching depression and whose opening angle is larger than an opening angle of the main latching depression.

An example bushing of a hydraulic hammer tool includes an outer region and an inner region. The inner region has a relatively greater hardness than the outer region. The inner region may also be compressively stressed, while the outer region may have tensile stress. The stress and/or hardness profile of the bushing may enhance its resistance to wear and galling defects when a hammer of the hydraulic hammer tool is held in alignment by the bushing. The outer region of the bushing may be relatively soft, resulting in the bushing having a relatively high level of toughness. The bushing may be formed using medium to high carbon steel by rough forming the bushing, hardening the bushing, tempering the bushing, and induction softening the outer region of the bushing.

An electric hand-held power tool, in particular a hammer drill and/or chipping hammer, having an electropneumatic impact mechanism which has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in an axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing via an end plate of the transmission housing on the other side, wherein the transmission housing is subdivided at least into a main shell and a cover shell separate from the main shell, such that the guide tube is braced against the main shell at least partially by the cover shell.

A hand-held power tool includes a tool receiver that includes a tubular tool holder configured to lock an insert tool therein by an assigned locking device via at least one locking element. The locking device includes a pressure sleeve that is spring-loaded via an assigned spring element, and a stop sleeve, the stop sleeve having a contact surface on its inner circumference, and the spring-loaded pressure sleeve pressing the at least one locking element in a locking position against the contact surface. The tubular tool holder has at least one recess in which the at least one locking element in the locking position is located, at least portionally, the at least one recess having a ramp-type guideway. The at least one locking element is displaceable along the ramp-type guideway from the locking position to an unlocking position.

An insert bushing arrangement of a breaking hammer, a breaking hammer and a method of supporting a breaking tool of a breaking hammer is provided. The insert bushing arrangement includes a bearing support inside which an insert bushing is mountable. Between the bearing support and the insert bushing is one or more intermediate material layers for preventing jamming of the components.

A hand-held power tool includes a tool receptacle with which a tubular tool holder configured to receive an application tool is associated, and a locking device configured to lock the application tool in the tubular tool holder. The locking device locks the application tool in a locking position via at least one locking element in the tubular tool holder. The locking device has a locking sleeve and a pressure ring spring loaded via an associated spring element. The spring-loaded pressure ring is configured to force the locking sleeve into the locking position and, in the locking position, forces the at least one locking element against the tool holder.

A tool receptacle for a hand-held power tool, in particular for a demolition hammer or chisel hammer, includes—a receptacle element for receiving a tool, and a locking element which for locking the tool in the tool receptacle is mounted so as to be eccentric and rotatable on the receptacle element, wherein the locking element with the aid of rotating the latter about the receptacle element is capable of being moved from an unlocked state in which the tool is retrievable from the receptacle element to a locked state in which the locking element encompasses the tool in a form-fitting manner, and vice versa.