A hand-held power tool includes a tool fitting, an impact mechanism, and a rotary drive. The hand-held power tool is configured to rotate a tool held in the tool fitting with a rotational speed about a longitudinal axis of the tool and to drive the tool with an impact movement along the longitudinal axis at an impact frequency f. A ratio of the rotational speed to the impact frequency f at least at a working point of the hand-held power tool is at most 5.0 rpm/Hz or at least at the working point of the hand-held power tool the rotational speed is at most (0.2*(f/Hz-22){circumflex over ( )}2+80) rpm for impact frequencies f in a range from 20 to 60 Hz.

A system includes a power tool and a suction device that is connected to the power tool via a suction hose. The power tool is drivable into a wall or into a substrate by a negative pressure produced by the suction device. A method includes driving the power tool into the wall or into the substrate by using the negative pressure produced by the suction device that is connected to the power tool via the suction hose.

An electric power tool dust collection system includes: a hammer drill, to which a dust suction bit is mounted; a dust collection device mounted to the hammer drill and including a suction portion (introduction port), a dust collection motor, a dust collection fan rotated by drive of the dust collection motor to generate a sucking force in the introduction port, and a dust collection portion (dust box) that stores powder dust suctioned from the introduction port; and exhaust flow paths (exhaust flow path and tubular flow path) respectively formed in the hammer drill and the dust collection device to lead exhaust that has passed through the dust box to a high-temperature portion (output portion) of the hammer drill.

A drilling tool, in particular a rock drill, extends along a longitudinal axis and includes a drill head, an insertion end, a main body, a sleeve element, a conveying portion arranged between the drill head and the insertion end, and at least one conduit that extends along the conveying portion. The conduit is located radially between the sleeve element and the main body. The sleeve element is rotatably mounted on the main body.

A drill bit for chiselling rock includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a plurality of cutting faces, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. The intake opening has a noncircular cross section.

A suction device for a hole saw of a hand-held power tool oscillatingly driven about an oscillation axis. A substantially disk-shaped base body has a first side that faces the hand-held power tool and a second side that faces the hole saw. A fastening section detachably fastens the suction device to an oscillatingly driven hand-held power tool; and a connecting piece connects the suction device to a suction apparatus.

A suction adapter for a drilling tool with a conduit includes a housing, at least one air intake port, and a valve unit. The valve unit is configured to open the air intake port as a function of a flow parameter.

A work tool equipped with a dust extraction device, the piercing tool includes a working head secured to a drive spindle, the extraction device has an extraction tube mounted around the drive spindle and a first end of which is mounted on a sleeve, the sleeve being mounted so as to rotate freely on the drive spindle of the piercing tool and being connected to a device generating a negative pressure in the extraction tube, wherein at least a portion of the circumference of the second end of the tube is in contact with the drilling head, the extraction device includes a vent formed between the second end of the tube and the working head.

A drill bit for chiseling stone includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a cutting edge, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. A cross section of the intake passage increases from the intake opening to the delivery passage.

A drill bit for chiselling rock includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a plurality of cutting faces, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. The intake opening has a noncircular cross section.