Abstract: In the disclosed motor, completely or partially wound inwardly projecting stator poles form three or more pole pairs that surround a permanent magnet rotor. The stator poles per phase are grouped together into a single pole group with alternating north-south poles, and groupwise are arranged on the inner circumference of the stator so that a mechanical offset angle .delta..apprxeq. 180/mp+.epsilon. exists between the pole groups and the pole division angles .tau..rho. of the stator and rotor are equal or deviate from each other only slightly.