Abstract: A tool unit for a handheld power tool having an oscillating output unit, having a fastening means (3) for attachment to the output unit, and having a working edge (4) that transitions into a lateral boundary line (7, 8, 12, 13, 16, 17). The working edge (4) is arc-shaped.

Abstract: The invention relates to a tool holder for a hand-held drill, especially a hammer drill. Said tool holder comprises an especially one-piece, rotatably driven accommodating cylinder (34) with a recess (60) for a shank part of an insertable tool, said recess (60) being open on both front ends and being defined in between by an inner peripheral surface (62) of the accommodating cylinder (34). The inner peripheral surface (62) of the accommodating cylinder (34) has at least six planar peripheral sections (62n to 62u) in the peripheral direction, adjacent peripheral sections (62n, 62o; 62p, 62q; 62r 62s; 62t, 62u) forming respective angles of 120 degrees between them.

Abstract: The invention is based on a hand-held power tool, in particular a sander, having a housing (10) and a motor (12) located in the housing (10), by way of which motor a driven shaft (16), extending from a face end (14) of the housing (10), is drivable, and having a suction conduit (18), extending at least partway through the housing (10). It is proposed that the suction conduit (18) discharges at the face end (14).

Abstract: The invention relates to an exchangeable rotary tool for a hand-held machine tool with a drill and/or hammer function, especially for a hammer drill. Said rotary tool comprises an insertable shank to be accommodated in a tool holder of the hand-held machine tool, said shank having at least two driving fins extending along its longitudinal extent for rotational engagement. The driving fins (7), when seen in the cross-section, are diametrically opposite on the insertable shank (2) and at least one of the driving fins (7) has an axial interruption (10) for the purpose of axial locking. The invention also relates to a corresponding method of production.

Abstract: The invention is based on a device having a centering element (10) and at least one form-locking element (12) for fastening an axially mountable tool (14) to a drive shaft (16), which is drivable in an oscillating manner, of a hand-held power tool (28) in which the centering element (10) is provided for centering the tool (14) relative to the drive shaft (16), and the form-locking element (12) is provided for defining a rotary position of the tool (14) relative to the drive shaft (16). It is proposed that the form-locking element (12) is located radially outside the centering element (10).

Abstract: The invention is based on a machine tool, in particular a circular power saw, for machining a workpiece, having a covering (10) for guarding a user against machining residues of the workpiece that occur in operation and having an adjustable residue guide (12, 14) for carrying away at least some of the machining residues through an outlet opening in a defined direction in accordance with the position of the residue guide (12, 14). It is proposed that the residue guide is adjustable in such a way that in one position of the residue guide (12, 14), at least some of the machining residues are carried onward inside the covering (10).

Abstract: In a hand power tool having a housing which at least in part comprises an inner housing and an outer housing, and in which the inner housing and the outer housing are spaced apart from one another, at least one damping element is provided between the inner housing and the outer housing, so that the inner housing and the outer housing are decoupled from one another.

Abstract: An eccentric transmission having an imbalance compensation element (10a-10e) and having an eccentric element (12a-12e) for converting a revolving rotary motion of an armature shaft (14a-14e) into an oscillating rotary motion of a drive shaft (16a-16e) in order to drive an insert tool (40a-40e) of a hand-held power tool (18a-18e) to oscillate. The imbalance compensation element (10a-10e) is integral to another functional unit (12a-12d, 14e).

Abstract: An electric hand power tool has a housing, an air-cooled electric motor which is accommodated in the housing, a tool which is driven by the electric motor a protective hood which at least partially covers the tool, the housing having a handle and an auxiliary handle for a two-hand guidance of the hand power tool, the auxiliary handle being positioned in a plane transverse to a plane of the first-mentioned handle and, with reference to a work direction, before the first-mentioned handle, the auxiliary handle being completely hollow and having an inlet communicating with the protective hood so as to carry motor cooling air which has left the housing and passed the protective hood for the tool and then flows into the inlet of the auxiliary handle carrying debris and through the auxiliary handle and out of the latter, so that the auxiliary handle is operative for damping a flow noise of the air from the electric motor, from a motor-cooling fan and from the tool.

Abstract: An electric hand power tool has a housing, a rotatably driven tool, a protective hood which at least partially covers the tool, a handle and an auxiliary handle for a two-hand guidance of the power tool, the auxiliary handle being hollow and formed as a withdrawal passage for a removed material thrown from the rotatably driven tool, the auxiliary handle having an inlet which is formed so that a radiating direction of the removed material from the rotatably driven tool is substantially tangential to a workpiece periphery in an inlet of the auxiliary handle, the inlet of the auxiliary handle being formed so that an inflow direction of the motor spent air coincides with the radiating direction of the removed material from the tool, and an air-cooled electric motor which drives the tool and is accommodated in the housing, the housing having an air passage provided with an air inlet opening for a motor spent air, the air passage being screw-shaped in direction of the motor spent air, which is directed in an opposi

Abstract: An electric hand power tool has a housing, an air-cooled electric motor which is accommodated in the housing, a tool which is driven by the electric motor a protective hood which at least partially covers the tool, the housing having a handle and an auxiliary handle for a two-hand guidance of the hand power tool, the auxiliary handle being positioned in a plane transverse to a plane of the first-mentioned handle and, with reference to a work direction, before the first-mentioned handle, the auxiliary handle being completely hollow and having an inlet communicating with the protective hood so as to carry motor cooling air which has left the housing and passed the protective hood for the tool and then flows into the inlet of the auxiliary handle carrying debris and through the auxiliary handle and out of the latter, so that the auxiliary handle is operative for damping a flow noise of the air from the electric motor, from a motor-cooling fan and from the tool.

Abstract: The invention is based on a machine tool, in particular a circular power saw, for machining a workpiece, having a covering (10) for guarding a user against machining residues of the workpiece that occur in operation and having an adjustable residue guide (12, 14) for carrying away at least some of the machining residues through an outlet opening in a defined direction in accordance with the position of the residue guide (12, 14). It is proposed that the residue guide is adjustable in such a way that in one position of the residue guide (12, 14), at least some of the machining residues are carried onward inside the covering (10).

Abstract: An electric hand power tool has a machine, an air-cooled electric motor which is accommodated in the housing, a tool which is driven by the electric motor, a handle and an auxiliary handle for a two-hand guidance of the power tool, the auxiliary handle being hollow and formed as an air channel for spent air leaving the electric motor.

Abstract: An electric hand power tool has a housing, a rotatably driven tool, a protective hood which at least partially covers the tool, a handle and an auxiliary handle for a two-hand guidance of the power tool, wherein the auxiliary handle is hollow and formed as a withdrawal passage for a removed material thrown from the rotatably driven tool.

Abstract: A hand power tool has a tool holder with a base body; a drive part; at least one locking body for connecting the base body of the tool holder with the drive part; a securing body which radially fixes the at least one locking body in an engaging position; an actuating element operative for unlocking the tool holder and guiding the securing body to a position which radially releases the locking body, the base body in a locking position surrounding at least a part of the drive part.

Abstract: A hand power tool has a tool holder with a base body; a drive part; at least one locking body for connecting the base body of the tool holder with the drive part; a securing body which radially fixes the at least one locking body in an engaging position; an actuating element operative for unlocking the tool holder and guiding the securing body to a position which radially releases the locking body, the base body in a locking position surrounding at least a part of the drive part.

Abstract: A hammer drill has a three-part hammering sleeve. A hardened tool socket is attached to a guide tube made of unhardened steel by an axial connection. For connection to the driving gearwheel, the guide tube furthermore carries a latching ring fixed on the guide tube by three rollers which make possible good torque transmission. This construction has the advantage that it is no longer necessary to harden the entire hammering sleeve but only the tool socket and the latching ring. The guide tube can be composed of soft steel. The connections and ensure large-area transmission of force, wear on the soft guide tube caused by conventional connection techniques thereby being avoided.

Abstract: An impact hammer has a housing, a motor accommodated in the housing, an impacting mechanism accommodated in the housing and having a driver and a striker which is displaced by the driver in an axial direction and periodically strikes a shaft of a tool with the driver being tiltable about a tilting axis, a driving element which drives the driver into a reciprocating motion and a shaft which rotates the driving element. The driving element is provided with two interengaging eccentric parts including a first eccentric part which is non-rotatably connected with the shaft and a second eccentric part which is axially displaceable relative to the shaft. The eccentric parts have ring surfaces each surrounding the shaft, arranged asymmetrically relative to one another and being in contact with one another.

Abstract: A power driven hammer drill includes a percussive mechanism connectable to driving gears via a clutch. A pressure amplifying lever system is arranged between a movable part of the clutch and shiftable guiding means for a work tool to apply an amplified pressure on the clutch when the work tool is pressed against a workpiece.

Abstract: A hammer drill is provided with a clutch whose movable part is firmly connected to an axially displaceable drum which supports a wobbling disc driving a percussive mechanism for striking a work tool. The axially fixed clutch part is rotated by driving motor and is backed-up by a housing of the drill. Retroacting forces from the percussive mechanism are transferred via the drum onto the movable clutch part so that the engagement of the clutch is reinforced at the moment when the compression generated by percussive mechanism is maximum. When pressure applied on work tool is relieved, a separating spring disengages the clutch and braking surfaces on the drum limit its axial displacement and brake the rotation of the wobbling disc.