Power tool

A hammer drill comprising:

• 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 hammer lockout mechanism adjustable between a first mode and a second mode, the hammer lockout mechanism including a plurality of detents, each of which is radially movable between a locking position and an unlocking position;
• and
• a collar rotatably coupled to the housing and movable between a first rotational position in which the hammer lockout mechanism is in the first mode and a second rotational position in which the hammer lockout mechanism is in the second mode,
• wherein in the first mode, the detents are positioned such that the spindle is moveable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage, and
• wherein in the second mode, the detents are positioned in the locking position such that the spindle is prevented from moving relative to the housing in response to contact with a workpiece and a gap is maintained between the first and second ratchets.

A hammer drill comprising:

• 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, the spindle being selectively axially movable relative to the housing;
• a first ratchet coupled for co-rotation with the spindle and axially movable with the spindle relative to the housing;
• a second ratchet axially and rotationally fixed to the housing;
• a hammer lockout mechanism adjustable between a first mode and a second mode, the hammer lockout mechanism including a detent radially movable between a locking position and an unlocking position;
• and
• a collar rotatably coupled to the housing and movable between a first rotational position in which the hammer lockout mechanism is in the first mode and a second rotational position in which the hammer lockout mechanism is in the second mode,
• wherein in the first mode, the detent is positioned such that the spindle is axially moveable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage, and
• wherein in the second mode, the detent is positioned in the locking position such that the spindle is prevented from axially moving relative to the housing in response to contact with a workpiece and a gap is maintained between the first and second ratchets.