A motor comprising: a shaft; a rotor coupled to the shaft; a stator disposed outside the rotor; a housing having a length in an axial direction of the motor, wherein the rotor and the stator are disposed in the housing, which comprises an opening; a cover coupled to the housing; and a busbar disposed between the stator and the cover, wherein the cover comprises - a radially extending cover plate portion, in which holes are formed, through which the terminals of the busbar pass, and - a sidewall extending in the axial direction from an edge of the cover plate portion, and wherein the cover sidewall comprises an outer circumferential surface and at least three recesses concavely formed in the outer circumferential surface of the sidewall and configured to allow a jig mounting tool (2, 3, 4, 5) to be disposed in the recesses, and wherein the cover and the housing are coupled to form an exterior of the motor by - the housing comprising a sidewall portion which has a cylindrical shape and protrudes from a housing plate portion in the axial direction and a plurality of housing protrusions, which are formed to protrude from an inner surface of a sidewall portion, and - the top surfaces of the housing protrusions coming into contact with a bottom surface of the cover sidewall so as to support an end of the sidewall and to perform a function of an axial position guide to mount the cover in a preset position, - the plurality of recesses being formed in one region of the outer circumferential surface of the sidewall to be recessed inward, wherein the shaft is disposed inside a central hole of the radially extending cover plate portion, wherein a bearing is disposed on the shaft and is supported by the cover plate portion. a shaft; a rotor coupled to the shaft; a stator disposed outside the rotor; a housing having a length in an axial direction of the motor, wherein the rotor and the stator are disposed in the housing, which comprises an opening; a cover coupled to the housing; and a busbar disposed between the stator and the cover, wherein the cover comprises - a radially extending cover plate portion, in which holes are formed, through which the terminals of the busbar pass, and - a sidewall extending in the axial direction from an edge of the cover plate portion, and - a radially extending cover plate portion, in which holes are formed, through which the terminals of the busbar pass, and - a sidewall extending in the axial direction from an edge of the cover plate portion, and wherein the cover sidewall comprises an outer circumferential surface and at least three recesses concavely formed in the outer circumferential surface of the sidewall and configured to allow a jig mounting tool (2, 3, 4, 5) to be disposed in the recesses, and wherein the cover and the housing are coupled to form an exterior of the motor by - the housing comprising a sidewall portion which has a cylindrical shape and protrudes from a housing plate portion in the axial direction and a plurality of housing protrusions, which are formed to protrude from an inner surface of a sidewall portion, and - the top surfaces of the housing protrusions coming into contact with a bottom surface of the cover sidewall so as to support an end of the sidewall and to perform a function of an axial position guide to mount the cover in a preset position, - the plurality of recesses being formed in one region of the outer circumferential surface of the sidewall to be recessed inward, - the housing comprising a sidewall portion which has a cylindrical shape and protrudes from a housing plate portion in the axial direction and a plurality of housing protrusions, which are formed to protrude from an inner surface of a sidewall portion, and - the top surfaces of the housing protrusions coming into contact with a bottom surface of the cover sidewall so as to support an end of the sidewall and to perform a function of an axial position guide to mount the cover in a preset position, - the plurality of recesses being formed in one region of the outer circumferential surface of the sidewall to be recessed inward, wherein the shaft is disposed inside a central hole of the radially extending cover plate portion, wherein a bearing is disposed on the shaft and is supported by the cover plate portion.