Motor

A motor comprising:

• a bearing portion including an upper bearing and a lower bearing;
• a shaft including a central axis extending in a vertical direction as a center thereof, and rotatably supported by the bearing portion;
• a rotor magnet that rotates together with the shaft;
• an armature located radially outside the rotor magnet;
• a casing that fixes the armature and holds the upper and lower bearings at a radial center thereof, the upper and lower bearings rotatably supporting the shaft;
• and
• a cover;
• wherein
• the armature includes:
• a stator core including an annular core back and a plurality of magnetic pole teeth that project radially inward from the core back;
• an insulator that covers at least an upper surface and a lower surface of each of the plurality of magnetic pole teeth of the stator core;
• and
• coils each defined by a conducting wire wound around a separate one of the plurality of magnetic pole teeth with the insulator intervening therebetween;
• wherein
• the casing includes a through hole passing through an axial end surface of the casing in an axial direction;
• and
• the cover is opposite to the through hole between the casing and the armature.