A bearing flange for a drive system of a hand-held power tool includes a first bearing point for a driveshaft of a drive motor, a second bearing point for an intermediate shaft, and a third bearing point for a hammer tube. At least one bearing point includes a ball bearing, which is received in a receiving opening of the bearing flange and is axially secured therein by a snap ring.

A power tool includes a motor having a motor shaft, a first intermediate shaft, and a second intermediate shaft extending in parallel to the first intermediate shaft. An output shaft removably holds a tool accessory and has a driving axis extending in parallel to the first and second intermediate shafts. A motion-converting mechanism converts rotation of the first intermediate shaft to linearly hammer the tool accessory. A rotation-transmitting mechanism transmits rotation of the second intermediate shaft to rotate the output shaft. A rotational axis of the motor shaft intersects, or is skewed relative to, the driving axis. A pair of first gears, e.g., bevel gears, operably couples the motor shaft to a first one of the first and second intermediate shafts. A pair of second gears operably couples the first one of the first and second intermediate shafts to a second one of the first and second intermediate shafts.

A power tool includes a motor having a rotatable motor shaft, a first intermediate shaft, and a second intermediate shaft extending in parallel to the first intermediate shaft. An output shaft removably holds a tool accessory and has a driving axis. A motion-converting mechanism converts rotation of the first intermediate shaft only into linear reciprocating motion and thereby hammers the tool accessory along the driving axis. A rotation-transmitting mechanism transmits rotation of the second intermediate shaft to the output shaft and thereby only rotationally drives the output shaft around the driving axis.

A power tool, such as a rotary hammer, includes a housing, an output shaft for mounting a tool accessary and a motor having a motor shaft that generates a rotational output for rotating and linearly hammering the output shaft. The rotational output of the motor shaft is coupled to the output shaft via a driving mechanism that includes a hammer mechanism. An intervening member is axially movable relative to the motor shaft and is operably coupled between the motor shaft and the hammer mechanism. The hammer mechanism and the output shaft are supported by a movable support that is axially movable relative to the housing. Because the output shaft and the driving mechanism are movable relative to the motor and the housing, which preferably includes handle, via the intervening member and the movable support during hammering operations, vibration generated during hammering operations can be dampened before reaching the housing.

A control method for a bore-chiseling portable power tool for machining a substrate by a drill bit includes superimposing a periodic striking on the drill bit at an impact rate and a rotating of the tool holder at a rotational speed in a rotational direction, identifying a material of the substrate being machined by the drill bit by a sensor, adjusting the rotational speed and/or the rotational direction to a first rotational speed and a first rotational direction when the identified material is an iron-based material, and adjusting the rotational speed and/or the rotational direction to a second rotational speed and a second rotational direction when the identified material is a mineral material. The first rotational speed is less than the second rotational speed and the first rotational direction is counter-clockwise and the second rotational direction is clockwise.

A hammer drill includes a housing, a tool holder, a hammering member, a gear, and a conversion member. The gear is switched to a first state where a rotation of the intermediate shaft is transmitted and a second state where the rotation of the intermediate shaft is not transmitted, and a mode switching member is configured to perform a switching operation of the state of the gear from an outside of the housing. The switching of the state of the gear by the mode switching member provides at least two operation modes of a hammer drill mode where the gear integrally rotates with the intermediate shaft to generate the rotation and a reciprocation of the hammering member on the tool holder and a hammer mode where the gear is separated from the rotation of the intermediate shaft to generate only the reciprocation of the hammering member.

An impact tool includes a tool body, a tool holder, a cylindrical member, a reciprocating member, a motor, a first rotary body, a second rotary body, a swinging member, and clutch mechanisms. The clutch mechanisms are disposed between the first rotary body and the second rotary body on a power transmission path from the motor to the swinging member. The tool holder and the cylindrical member move together as a movable unit with respect to the tool body between a front end position and a separate position, according to a pressing force applied to the tool holder. The clutch mechanisms are each configured to start transmission of the first rotary body to the second rotary body while the movable unit moves from the front end position to the separate position and to interrupt transmission while the movable unit moves from the separate position to the front end position.

A hammer drill is provided with a hammer mechanism that includes a cylinder having a central axis, a ram having a radial recess slidably mounted within the cylinder, a piston slidably mounted within the cylinder, and a ram catcher. The ram catcher includes a first ring and a second ring surrounding the central axis and forming a groove therebetween, the second ring being located between the first ring and the end of the cylinder. An O-ring that is resiliently-deformable is mounted within the groove and includes an inner side projecting inwardly towards the central axis. When the ram is in a working position, the O-ring is located forward of the ram. When the ram is in a forward position, the O-ring is located in-line with the radial recess of the ram.

A roller bearing for at least one set of roller bodies, which are disposed in an annular manner, the roller bearing having at least one track element with a track, on which the roller bodies are provided for rolling. The track comprises a track base having a circular circumferential line. The track element comprises, on each axial side of the track base, a shoulder or a rim for the roller bodies, each shoulder or rim having a circular circumferential line. The track element is formed such that, as viewed perpendicular to the planes defined by the circumferential lines, all center points of the three circumferential lines are different from each other.

The invention relates to a hammering device for influencing the subsurfaces of workpieces comprising a beating tool for acting on the workpiece, a beating mechanism which has a first beater for producing a beating pulse on the beating tool, and a drive for driving the beating mechanism, wherein the beating mechanism has at least a second beater for producing a beating pulse on the beating tool. According to the invention, it is intended for the beating mechanism to comprise a drive shaft that extends along a drive axis and a wobble ring for transforming a rotational movement of the drive shaft into a translational movement, and the first beater and the second beater to be driven by the wobble ring.