A rotor capable of preventing a cover tube from being deformed locally due to injection pressure of a resin injected into a gap between a rotor core and a cover tube. The rotor includes a rotor core, a plurality of magnets, a cover tube, and a filler which is filled into the gap between the rotor core, and the cover tube. The rotor core includes a plurality of projections which project radially outward from an outer circumferential face of the rotor core, and which extends toward a second end face of the rotor core from a first end face of the rotor core in an axial direction of the rotor core, and a cutout that is dented radially inward from a radially outside end face of at least one of the projections.