Motor and fan motor

A motor comprising:

• a bearing;
• and
• a rotor supported by the bearing to be rotatable about a central axis extending in an axial direction;
• wherein
• the rotor includes:
• a rotor lid portion extending in a radial direction;
• and
• a first protruding portion protruding in one axial direction from the rotor lid portion, extending along the central axis, and rotatably supported by the bearing;
• the bearing has a cylindrical shape extending in the axial direction and surrounds the first protruding portion;
• a blind hole extending in another axial direction is located in an end portion in the one axial direction of the first protruding portion;
• an axial length of the blind hole from an opening of the blind hole to a closed end of the blind hole is less than about half of an axial length of the first protruding portion;
• the rotor further includes a second protruding portion that protrudes in the another axial direction from the rotor lid portion and extends along the central axis;
• an outer diameter of the second protruding portion is larger than an outer diameter of the first protruding portion when viewed from the axial direction;
• the motor further includes an impeller that is rotatable about the central axis together with the rotor and is fixed to at least the rotor lid portion of the rotor;
• the impeller includes an impeller lid portion having an annular shape surrounding the second protruding portion and located on an end surface in another axial direction of the rotor lid portion;
• and
• an end portion in the another axial direction of the second protruding portion of the motor extends farther in the another axial direction than an inner end portion in a radial direction of the impeller lid portion.