A rotor for motors comprising: a rotor core disposed on a rotary shaft, a first divided rotor magnetic pole unit including P (P is a positive even number) permanent magnet magnetic pole portions of a first kind and P (P is the positive even number) salient pole portions made of a magnetic material; the permanent magnet magnetic pole portions of the first kind and the salient pole portions being alternately disposed on a surface of the rotor core in a circumferential direction of the rotary shaft, and a second divided rotor magnetic pole unit including P (P is the positive even number) permanent magnet magnetic pole portions of a second kind disposed adjacent to each other on the surface of the rotor core in the circumferential direction of the rotary shaft ', the first divided rotor magnetic pole unit and the second divided rotor magnetic pole unit being disposed side by side in an axial direction of the rotary shaft so that a first virtual centerline extending along an axis line of the rotary shaft and passing through the center of the permanent magnet magnetic pole portion of the first kind may coincide with a second virtual centerline (C1') extending along the axis line and passing through the center of the permanent magnet magnetic pole portion of the second kind, wherein: a spacer made of a soft magnetic material is disposed in a gap which is formed, due to size precision of the permanent magnet magnetic pole portion, between two adjacent permanent magnet magnetic pole portions of the P permanent magnet magnetic pole portions of the second kind in the second divided rotor magnetic pole unit. a rotor core disposed on a rotary shaft, a first divided rotor magnetic pole unit including P (P is a positive even number) permanent magnet magnetic pole portions of a first kind and P (P is the positive even number) salient pole portions made of a magnetic material; the permanent magnet magnetic pole portions of the first kind and the salient pole portions being alternately disposed on a surface of the rotor core in a circumferential direction of the rotary shaft, and a second divided rotor magnetic pole unit including P (P is the positive even number) permanent magnet magnetic pole portions of a second kind disposed adjacent to each other on the surface of the rotor core in the circumferential direction of the rotary shaft ', the first divided rotor magnetic pole unit and the second divided rotor magnetic pole unit being disposed side by side in an axial direction of the rotary shaft so that a first virtual centerline extending along an axis line of the rotary shaft and passing through the center of the permanent magnet magnetic pole portion of the first kind may coincide with a second virtual centerline (C1') extending along the axis line and passing through the center of the permanent magnet magnetic pole portion of the second kind, wherein: a spacer made of a soft magnetic material is disposed in a gap which is formed, due to size precision of the permanent magnet magnetic pole portion, between two adjacent permanent magnet magnetic pole portions of the P permanent magnet magnetic pole portions of the second kind in the second divided rotor magnetic pole unit.