A motor comprising: an annular-shaped stator including a stator core on which a coil is wound; and a rotor including a shaft, which is rotatably installed at a center of the stator; wherein a first housing and a second housing, which are separated in a shaft direction of the rotor so as to be faced, and install the stator and the rotor, are included; and a material of the stator core is different from a material of the housings, in a state where one end portion in axis direction of the stator core is contacted to the first housing, and the other end portion in axis direction of the stator core is contacted to the second housing; and a neighboring portion of a contact portion, at which the first housing is contacted to the stator core, and another neighboring portion of a contact portion, at which the second housing is contacted to the stator core, are connected by a connecting component in axis direction, of which material is the same as a material of the stator core, whereby the first housing and the second housing are connected each other; and the first housing and the second housing are faced to each other in a state where a gap intervenes between the both housings; wherein a peripheral wall of the first housing, which surrounds the stator core extended from the neighboring portion of the contact portion at which the first housing is contacted to the stator core, is faced to the second housing in a state where the gap intervenes between the both housings; characterized in that a plurality of flanges is extended in diameter direction from the neighboring portion of the contact portion of the second housing, which is contacted to the other end portion in axis direction of the stator core, and the flanges of the second housing are connected, by the bolt used as the connecting component in axis direction, to the neighboring portion of a contact portion contacting to the stator core in the first housing, whereby the first housing and the second housing are connected each other: and in that an inner circumference surface of the peripheral wall of the first housing is contacted to an outer circumference surface of the flanges of the second housing. an annular-shaped stator including a stator core on which a coil is wound; and a rotor including a shaft, which is rotatably installed at a center of the stator; wherein a first housing and a second housing, which are separated in a shaft direction of the rotor so as to be faced, and install the stator and the rotor, are included; and a material of the stator core is different from a material of the housings, in a state where one end portion in axis direction of the stator core is contacted to the first housing, and the other end portion in axis direction of the stator core is contacted to the second housing; and a neighboring portion of a contact portion, at which the first housing is contacted to the stator core, and another neighboring portion of a contact portion, at which the second housing is contacted to the stator core, are connected by a connecting component in axis direction, of which material is the same as a material of the stator core, whereby the first housing and the second housing are connected each other; and the first housing and the second housing are faced to each other in a state where a gap intervenes between the both housings; wherein a peripheral wall of the first housing, which surrounds the stator core extended from the neighboring portion of the contact portion at which the first housing is contacted to the stator core, is faced to the second housing in a state where the gap intervenes between the both housings; characterized in that a plurality of flanges is extended in diameter direction from the neighboring portion of the contact portion of the second housing, which is contacted to the other end portion in axis direction of the stator core, and the flanges of the second housing are connected, by the bolt used as the connecting component in axis direction, to the neighboring portion of a contact portion contacting to the stator core in the first housing, whereby the first housing and the second housing are connected each other: and in that an inner circumference surface of the peripheral wall of the first housing is contacted to an outer circumference surface of the flanges of the second housing.