A tool holder comprising a base element, a deformable receiver for clamping a tool and at least one locking element configured for preventing an axial extraction of the tool from the tool holder through engaging a corresponding opposite element at the tool, wherein the at least one locking element is integrally configured in one piece with the receiver.

A hole cutting accessory for a power-driven tool may include an arbor that provides for quick release of an annular saw blade component of the accessory, and for quick release of a pilot drill bit component of the accessory. The quick release of the annular saw blade component from the arbor may be accomplished separately from the quick release of the pilot drill bit component from the arbor.

A cutting tool includes a hole saw, a pilot bit, and an arbor assembly. The arbor assembly includes a shank, a body, a first engagement member moveable relative to the shank, the first engagement member engaging the hole saw to releasably secure the hole saw to the shank, and a second engagement member moveable relative to the shank, the second engagement member engaging the pilot bit to releasably secure the pilot bit to the shank. The body is moveable to a first position where the hole saw and the pilot bit are secured to the arbor assembly, to a second position where the first engagement member disengages the hole saw, allowing removal of the hole saw from the shank, and to a third position where the second engagement member disengages the pilot bit, allowing removal of the pilot bit from the shank.

A chuck assembly for a rotary power tool includes a chuck body rotatable about a central axis. The chuck body has a plurality of slots, each oriented at an oblique angle relative to the central axis. The chuck assembly also includes a plurality of jaws, each movable along a respective one of the slots. The chuck assembly also includes a collar coupled to the plurality of jaws. The collar is selectively engageable with the chuck body such that, when engaged, the plurality of jaws are movable along the plurality of slots in response to rotation of the collar.

A cutting tool includes a hole saw, a pilot bit, and an arbor assembly. The arbor assembly includes a shank, a sleeve, a first ball bearing moveable relative to the shank, the first ball bearing engaging the hole saw to releasably secure the hole saw to the shank, and a second ball bearing moveable relative to the shank, the second ball bearing engaging the pilot bit to releasably secure the pilot bit to the shank. The sleeve is moveable to a first position where the hole saw and the pilot bit are secured to the arbor assembly, to a second position where the first ball bearing disengages the hole saw, allowing removal of the hole saw from the shank, and to a third position where the second ball bearing disengages the pilot bit, allowing removal of the pilot bit from the shank.

A tool holder has a base element, a deformable receiver for clamping a tool and at least one locking element configured for preventing an axial extraction of the tool from the tool holder through engaging a corresponding opposite element at the tool. The at least one locking element is integrally configured in one piece with the receiver.

A cutting tool for turning and/or boring operations can include a holder, a replaceable insert supported by the holder in a cutting position, and a clamp releasably coupled to the holder and configured to bear against the insert to retain the insert in the cutting position. The clamp can be releasably coupled to the holder without a threaded fastener. The cutting tool can include a retention mechanism for releasably connecting the holder and the clamp, the retention mechanism having alternate locked and unlocked states.

A chuck assembly for a rotary power tool includes a chuck body rotatable about a central axis. The chuck body has a plurality of slots, each oriented at an oblique angle relative to the central axis. The chuck assembly also includes a plurality of jaws, each movable along a respective one of the slots. The chuck assembly also includes a collar coupled to the plurality of jaws. The collar is selectively engageable with the chuck body such that, when engaged, the plurality of jaws are movable along the plurality of slots in response to rotation of the collar.

A drilling tool includes a step drill bit and an arbor assembly. The arbor assembly includes a shank having a first end, a second end opposite the first end, and a longitudinal axis extending through the first and second ends. The first end of the shank is removably coupled to the step drill bit, and the second end of the shank is configured to be coupled to a power tool. The arbor assembly includes a sleeve moveable along the shank parallel to the longitudinal axis, and a ball bearing disposed on the sleeve and moveable with the sleeve. The ball bearing engages the step drill bit to releasably secure the step drill bit to the shank. When the sleeve moves toward the second end of the shank, the ball bearing moves radially inward and disengages the step drill bit, allowing removal of the step drill bit from the shank.

An air chuck includes: a finger support part including a pair of fingers and a pair of lock shafts; a chuck main body part including an operation mechanism operable to open and close the fingers; and linking mechanisms that detachably link the finger support part to the chuck main body part. Each of the linking mechanisms causes the corresponding lock shaft to shift to a non-lock position so as to render the pair of fingers capable of being opened and closed when the finger support part is linked to the chuck main body part. Each of the linking mechanisms causes the corresponding lock shaft to shift to a lock position and locks the pair of fingers so as to render the pair of fingers incapable of being opened and closed when the finger support part is detached from the chuck main body part.