A percussion tool includes a housing having a top end, a bottom end, a front end, and a rear end. The housing defines a barrel portion, a handle portion opposite the barrel portion, and a motor housing portion between the barrel portion and the handle portion. The percussion tool also includes an electric motor positioned within the motor housing portion and a percussion mechanism driven by the motor and including a striker supported for reciprocation in the housing. The striker defines a striker axis in a reciprocating direction. The percussion tool further includes a battery receptacle supported by the housing and a battery pack removably coupled to the battery receptacle for providing power to the motor. The battery pack and the battery receptacle define a battery axis extending longitudinally through the battery pack and battery receptacle. The striker axis and the battery axis are parallel.

A method of driving a rod into the ground includes coupling an impact portion of an attachment to a powered hammer. The rod is positioned between a first jaw of the attachment and a second jaw of the attachment. The first jaw is pivoted relative to the attachment such that the first jaw is engaged with the rod. The second jaw is pivoted relative to the attachment such that the second jaw is engaged with the rod. The powered hammer is activated to deliver repeated axial impacts to the impact portion of the attachment.

An attachment includes a drive shank that is removably couplable to a tool, the drive shank having a groove in which the retention feature is disposed. An insert is coupled to the drive shank, and the insert is positioned in the groove of the drive shank and configured to engage a retention feature of the attachment.

A striking mechanism (15) having an idle-strike damping element and a rebound-strike damping element (6, 7), which interact with a tool holder (3), wherein the tool holder (3) is mounted via at least two plain bearings (13a, 13b) to a guide housing (5), and wherein the idle-strike damping element and the rebound-strike damping element (6, 7) are arranged at an axial distance relative to one another on the outer circumferential side of the tool holder (3). It is provided that the idle-strike damping element (6) and/or the rebound-strike damping element (7) is coupled to the tool holder (3) via a front-side or inner circumferential toothing (8) and the same damping element (6 or 7) is coupled to the guide housing (5) via a front-side or outer circumferential toothing (11). A power tool (2), in particular a drill or chisel hammer, having a striking mechanism (15).

A hydraulic hammering device includes a dual damper including a pushing piston, a damping piston, a pushing chamber configured to generate a propulsive force in the pushing piston (5), a damping chamber configured to generate a propulsive force in the damping piston, and a drain circuit provided in constant isolation from the pushing chamber and the damping chamber and configured to return hydraulic fluid leaked from locations of sliding contact of the pistons to a tank. A first throttle is interposed in the drain circuit. Only a check valve configured to, while allowing supply of hydraulic fluid from the high-pressure circuit to the pushing chamber, restrict an outflow of hydraulic fluid in the reverse direction is provided in a pushing passage connecting the pushing chamber and a high-pressure circuit. Only a second throttle is provided in a damping passage connecting the damping chamber and the high-pressure circuit.

A power tool includes a housing including a battery receptacle that is configured to receive a battery pack. A biasing assembly is coupled to the housing. The biasing assembly includes a plunger including a catch configured to engage with a stop. A bumper is coupled to the plunger. An actuator is coupled to the housing and configured to translate the plunger between a first position in which the bumper is disengaged from the battery pack and a second position in which the bumper is engaged with the battery pack to dampen vibrations between the battery pack and the battery receptacle.