Abstract: A power tool includes a first housing portion and a second housing portion, a motor directly mounted between the housing portions with an output shaft defining an axis, and a gear assembly supported within the housing and including a ring gear directly supported by the housing portions, a pinion gear coupled for co-rotation with the output shaft, and planet gears meshed with the pinion gear and the ring gear. The power tool also includes a drive assembly operably coupled to the gear assembly with a camshaft, an anvil, a hammer configured to reciprocate along the camshaft to impart rotational impacts to the anvil, and a spring biasing the hammer towards the anvil. The ring gear includes lugs engaged with the first housing portion and the second housing portion to rotationally constrain the ring gear.

Abstract: A bit retainer is configured to couple a tool bit to an output spindle of a power tool. The bit retainer includes a body coupled for co-rotation with the output spindle about a rotational axis, a collet including a plurality of jaws positioned at least partially within the body, the collet defining a bore between the plurality of jaws configured to receive the tool bit, a wedge surface engageable with the collet, and a sleeve surrounding the body. The sleeve is movable relative to the body to engage the wedge surface against the collet and compress the plurality of jaws around the tool bit.

Abstract: A bit holder configured to engage a power tool. The bit holder including a mounting element and a bit holding portion. The mounting element is configured to alternately engage a first mounting structure on a first side of the power tool and a second mounting structure on a second side of the power tool. The bit holding portion includes a bit retaining aperture configured to at least partially receive a bit to secure the bit to the power tool.

Abstract: A power tool includes a housing, a drive assembly including an output shaft extending from the housing such that a tool element for performing work on a workpiece is attachable to the output shaft, and a bushing rotatably supporting the output shaft. The bushing includes an outer surface having a knurled texture.