Impact tool

An impact tool, comprising:

• a brushless motor including i) a stator having a stator core and an insulating member and a coil and ii) a rotor that is rotatable with respect to the stator and disposed inside the stator, an axis of rotation of the rotor extending in a front-rear direction of the impact tool;
• a motor housing that houses the brushless motor and includes a left motor housing, a right motor housing, and a rear motor housing, the left motor housing, the right motor housing and the rear motor housing are fixed by a plurality of screws;
• a fan disposed between the rotor and the rear motor housing;
• a grip housing disposed downward of the motor housing;
• a battery pack disposed below the grip housing;
• a hammer case having a recess;
• a planetary gear mechanism disposed frontward of the brushless motor and including an internal gear and planetary gears meshed with the internal gear, the internal gear having a protrusion extending into the recess of the hammer case;
• a spindle disposed frontward of the brushless motor;
• a hammer disposed around an outer circumference of the spindle inside the hammer case;
• an anvil configured to be struck rotationally by the hammer;
• a first bearing that supports the rotor;
• and
• a bearing retainer screw-fastened to the hammer case and holding the first bearing, the bearing retainer and the insulating member overlapping in the front-rear direction.

An impact tool, comprising:

• a brushless motor including i) a stator having a stator core and an insulating member disposed frontward of the stator core and a coil and ii) a rotor that is rotatable with respect to the stator and disposed inside the stator, an axis of rotation of the rotor extending in a front-rear direction of the impact tool;
• a motor housing that houses the brushless motor and includes a left motor housing, a right motor housing, a rear motor housing having at least one right-side exhaust port and at least one left-side exhaust port, and a plurality of screws that fixedly interconnect the left motor housing, the right motor housing, and the rear motor housing;
• a fan disposed between the rotor and the rear motor housing;
• a grip housing disposed downward of the motor housing;
• a battery pack disposed below the grip housing;
• a hammer case having a first recess;
• a planetary gear mechanism disposed frontward of the brushless motor and including an internal gear and planetary gears meshed with the internal gear, the internal gear having a first protrusion extending into the first recess of the hammer case;
• a spindle disposed frontward of the brushless motor;
• a hammer disposed around an outer circumference of the spindle inside the hammer case;
• an anvil configured to be struck rotationally by the hammer;
• a bearing that supports the rotor;
• and
• a bearing retainer coupled to the hammer case and holding the bearing,
• wherein a front part of the insulating member and a rear part of the bearing retainer overlap in the front-rear direction.