Rotor and motor

A rotor comprising:

• a first rotating body;
• and
• a second rotating body arranged along a central axis extending in a vertical direction;
• wherein
• the first rotating body includes a first rotor core having a cylindrical shape with the central axis as a center thereof, a plurality of first magnets arranged in a circumferential direction, and a plurality of first outer side surfaces arranged in the circumferential direction;
• each of the plurality of first outer side surfaces is an outer side surface of the first magnet or an outer side surface of the first rotor core, and includes a first circular arc surface curved in a circular arc shape with a first curvature radius in a plan view and arranged on one side in the circumferential direction and a second circular arc surface curved in a circular arc shape with a second curvature radius different from the first curvature radius in a plan view and arranged on the other side in the circumferential direction;
• and
• the second rotating body is positioned on a side lower than the first rotating body in an axial direction, and includes a second rotor core having a cylindrical shape with the central axis as a center thereof, a plurality of second magnets arranged in the circumferential direction, and a plurality of second outer side surfaces arranged in the circumferential direction;
• each of the plurality of second outer side surfaces is an outer side surface of the second magnet or an outer side surface of the second rotor core, and includes a third circular arc surface curved in a circular arc shape with a third curvature radius in a plan view and arranged on one side in the circumferential direction and a fourth circular arc surface curved in a circular arc shape with a fourth curvature radius different from the third curvature radius in a plan view and arranged on the other side in the circumferential direction.