FIG. 1 is an exploded perspective view illustrating main components of a brush motor 1 (brushed motor) as a first example. The brush motor 1 includes a stator 3 (stator), a rotor 6 (rotor), and a shaft 20. The stator 3 and the rotor 6 are accommodated in a housing 2 formed in a bottomed cylindrical shape as illustrated in FIG. 1. In FIG. 1, the description of a lid member (end bell) that closes an open end (left end in FIG. 1) of the housing 2 is omitted. The shaft 20 is a shaft-shaped member supported by the housing 2 and the end bell via a bearing (not illustrated). The stator 3 is fixed to the housing 2, and the rotor 6 is fixed to the shaft 20 and rotates integrally with the shaft 20. A central axis of the shaft 20 coincides with a rotation axis C of the rotor 6.