A power tool includes a housing, a motor, a spindle, a handle holder and an auxiliary handle. The housing includes a motor housing portion, a drive housing, and a mounting portion between the motor housing portion and the drive housing. The motor is located within the motor housing portion. The spindle is configured to rotate about a rotational axis in response to torque received from the motor. The handle holder is coupled to the drive housing and defines a first mounting point, and the mounting portion defines a second mounting point. The auxiliary handle is selectively attachable to each of the first and second mounting points, and the first mounting point is located at a first position along the rotational axis, and the second mounting point is located at a second position offset from the first position in a direction along the rotational axis.

A drilling machine, in particular a magnetic core drilling machine. The drilling machine having a magnetic base to detachably secure the drilling machine to a surface. A drive motor is arranged in a housing and has a rotor shaft with a rotor shaft longitudinal axis that is connected in a power-transmitting manner via a gear mechanism to a tool spindle with a spindle longitudinal axis. A tool holder is connected to the tool spindle to receive a drilling tool. The spindle longitudinal axis is aligned substantially parallel to the longitudinal axis of the rotor shaft, and the tool spindle is axially adjusted along the longitudinal axis of the spindle relative to the drive motor and the magnetic base.

An electric power tool includes a motor, an output shaft, a drive force transmission configured to reduce drive speed of the motor and transmit drive force of the motor to the output shaft; a trigger that can be pulled by a user; a rotation speed changing circuitry configured to change a rotation speed of the output shaft that corresponds to a maximum pulled amount of the trigger to a limited rotation speed that is lower than a maximum rotation speed of the output shaft in a non-limited rotation speed mode; and a rotation speed control circuitry configured to control a rotation speed of the motor in correspondence with a pulled amount of the trigger to obtain the rotation speed of the output shaft that is changed by the rotation speed changing circuitry.

A portable power tool has a drive unit for rotationally driving a tool receptacle about an axis of rotation, the drive unit having at least one drive motor and a shiftable transmission, which is arranged in a transmission housing with an at least partially sleeve-like clutch housing and a transmission cover fastened thereto. The tool includes a shifting element for shifting the shiftable transmission between at least two different gears, and a locking sleeve for locking the shifting element in at least a first and a second shifting position is arranged in the clutch housing. The shiftable transmission forms, at least in the first shifting position, a cross-sectional plane perpendicular to the axis of rotation in which the locking sleeve is arranged at least regionally between the transmission cover and the shifting element and the shifting element is arranged at least regionally between the locking sleeve and the clutch housing.

A hand-held power tool, in particular a hammer drill, includes a tool holder and a housing which has two housing half-shells. The hand-held power tool further includes a drive unit for driving a tool holder arranged in the housing. The drive unit includes at least one drive motor arranged in a motor support and a gear unit arranged in a gear unit housing. The motor support is connected directly to at least one of the two housing half-shells via at least one non-positive connection and at least one positive-locking connection. A relevant fastening axis is assigned to the at least one non-positive connection and to the at least one positive-locking connection. The fastening axis is arranged at right angles to and at a distance from an axis of rotation assigned to the tool holder.

A power tool includes a tool housing and a motor assembly received in the tool housing. The motor assembly has a rear end portion, a front end portion, and a motor output shaft. A transmission housing is coupled to the motor housing with a transmission received in the transmission housing, to which the motor output shaft is drivingly coupled. A partition assembly includes a rear cover covering a rear end portion of the transmission housing that faces the front end portion of the motor and a seal. The rear cover of the transmission housing, the front end portion of the motor, and the seal together define at least a first labyrinth path and a second labyrinth path therebetween configured to inhibit grease or dust migration between the transmission housing and the motor assembly.

A drywall joint tool includes a housing with upper and lower surfaces and an interior. A drivetrain is mounted in said interior and originates at a drive input shaft. The drivetrain reduces the rotational speed and increases the torque force from the drive input shaft to multiple rollers depending downwardly from the housing lower surface. A guide fence also depends downwardly from the housing lower surface and includes a guide wall. The spacing between the guide rollers in the guide wall correspondence to nominal and compressed thicknesses of a gypsum board panel along a cut edge traversed by the tool. In an alternative embodiment, four guide rollers are provided.

A portable electrical drilling assembly includes an electric motor rotating a gear contained within a gear box housing, a connector reversibly coupling the gear to a splined shaft with the splined shaft extending within and engaging an internal surface of a cutter or reamer with the shaft and cutter/reamer defining a cutter-spline drive, a pivoting power feed mechanism coupled to the gear box housing, and a spindle coupled to the feed mechanism for receiving the cutter or reamer. The gear rotation rotates the splined shaft and reamer/cutter to drill/ream a hole, with the pivoting of the power feed mechanism controlling the depth of the drilled or reamed hole. The separate coupling of the splined shaft and cutter/reamer and interchangeability of cutters/reamers allows the assembly to be used in a confined space while still achieving deep drilling of holes in workpieces. The cutter-spline drive can be used in other drilling assemblies.

A method for operating a machine tool having a battery and an electric motor which is designed to rotationally drive an output shaft that can be coupled to a tool is described, a control device for actuating the electric motor and a device for determining a parameter being provided, it being possible for the machine tool to be operated in a first operating mode and a second operating mode, and the control device transferring the machine tool from the first operating mode into the second operating mode if the parameter determined by the device exceeds or falls below a defined threshold value. The electric motor (3) is controlled in the second operating mode by an amperage profile comprising current pulses (10, 10′, 11), a level a maximum amperage (A1, A1′, A2) of the current pulses (10, 10′, 11) being varied depending on an actual charge status of the battery (2). A machine tool that can be operated using a method of this kind is also described.

The present specification relates to a power drill, comprising a housing in which a motor is arranged, and a front and rear bearing arranged to support an axle assembly adapted to engage a drill attachment, wherein said axle assembly and at least one of said front and said rear bearing further form an additional assembly movably arranged with respect to said housing, said power drill further comprising a force transducer arranged at said front end of said housing and axially supported by said housing, and wherein said additional assembly is axially supported by said force transducer, said force transducer thereby being configured to output a signal representing an axial force acting on said additional assembly. The present specification further relates to a force transducer for such a power drill and a detachable front part for a power drill.