A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing supported by the housing, and a bearing rotatably supporting the spindle. The spindle has an outer race. And, the outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.

A driver drill includes a motor housing that holds an electric motor, an axis of rotation of a rotor of the electric motor extending in a front-rear direction of the driver drill, a grip housing having an upper end connected to a lower part of the motor housing and an enlarged-part housing connected to a lower end of the grip housing and spaced from the motor housing in an up-down direction of the driver drill that is perpendicular to the front-rear direction. A torque setting of the driver drill is changeable, and the driver drill is changeable between a setting unlocked state in which the torque setting is changeable and a setting locked state in which the torque setting is not changeable.

A dust collector includes a body configured to be removably attached to a lower side of a tool body of a drilling tool, a dust storing part to be disposed on a lower side of the body, a sliding part having a suction port and held by the body so as to be slidable in a front-rear direction, a dust transfer passage extending within the sliding part and connecting the suction port and an inlet of the dust storing part, and a tool connection passage disposed within an internal space of the body and configured to connect an outlet of the dust storing part and an inlet of the tool body of the drilling tool. The dust storing part includes the inlet, a filter, a dust storing space and the outlet. The filter is disposed forward of the inlet of the dust storing part.

A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing on an interior of the housing, and a bearing arranged between the spindle and the sleeve bushing and rotatably supporting the spindle. The bearing has an outer race. The spindle is movable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage and the spindle to reciprocate while rotating. The outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.

A power tool, such as a hammer driver-drill (1), includes: a motor (8); a motor housing (7A) that holds the motor (8); a grip housing (7B) connected to the motor housing (7A); a battery mount housing or enlarged-part housing (7C) connected to the grip housing (7B); and a dial (24) that is provided in the enlarged-part housing (7C) such that it is rotatable about a dial shaft (29). A threshold for stopping the motor (8) is settable by rotating the dial (24).

Rotation of a spindle relative to a first cam is reduced. A power tool includes a spindle to receive a tip tool and rotatable about a rotation axis, and a vibration mechanism that vibrates the spindle in an axial direction. The spindle has an outer surface including, in a cross section orthogonal to the rotation axis, a first portion at a first distance from the rotation axis, and a second portion at a second distance from the rotation axis. The vibration mechanism includes a first cam surrounding the spindle, and a second cam located behind and in contact with the first cam.

An electric powered work machine in one aspect of the present disclosure includes a motor, a current-carrying path, a switching circuit, a circuit board, a metal case, and a heat radiation sheet. The circuit board includes a first surface, a second surface, a first hole group, a board conductive line, and a circuit arrangement area.

An impact tool includes a housing; and a motor, a tubular tool holder, a driving mechanism, a rotation shaft, a driving mechanism housing region inside the housing. The tool holder has a distal end on which a bit is mountable. The driving mechanism is configured to hammer the bit. The rotation shaft is disposed in the driving mechanism and rotates by a rotation of an output shaft of the motor. The driving mechanism housing region houses the driving mechanism in a sealed state inside the housing. The air escape path that releases air inside the driving mechanism housing region to outside of the driving mechanism housing region is formed inside the rotation shaft while an inlet of the air escape path is formed on an outer peripheral surface of the rotation shaft.

The power tool includes: a handle; a biasing member for biasing the handle in a direction away from a final output shaft in the axial direction; at least one guiding member disposed between a housing and a first part of the handle so as to extend in the axial direction and configured to slidably guide relative movement between the handle and the housing; and at least one elastic member disposed at least one of between the at least one guiding member and the housing and between the at least one guiding member and the first part of the handle. The at least one guiding member is disposed so as to be movable relative to the housing or the handle in a crossing direction that crosses the axial direction by elastic deformation of the at least one elastic member in the crossing direction.

A system includes first and second power tools that each have a percussion mechanism, a motor, and a transmission. The transmission includes a striking mechanism and is configured to transfer a driving motion of the motor to an insert tool held in a tool holder. The transmission has a guide tube that is identical in some regions along a working axis and accommodates a striker. The guide tube is rotatably coupled to the motor by a first transmission unit. The striker is driven to linearly oscillate by a piston of a second transmission unit. A ratio between a diameter of the tool holder and a diameter of the guide tube is 1.8 times greater in the first power tool than in the second power tool. A striking energy of the second power tool is mechanically reduced compared to a striking energy of the first power tool.