The utility model relates to an electro -magnet field especially relates to a rotating electromagnet. Rotating electromagnet, which comprises a housin, it is equipped with the pivot to rotate throughbearing arrangement on the casing, armature has set firmly in the pivot, be equipped with the stator coil subassembly in the casing outside armature circumference, the casing includes along pivot axial interval arrangement in armature both sides before, back buting iron, the bearing arrangement installation in the front, between back buting iron and the pivot, armature has along a plurality of active cell blades to the interval equipartition, one side towards armature of two buting iron is equipped with a plurality of stator blade that correspond with the active cell blade that follow circumference interval equipartition respectively, be equipped with the self -lubricating wear -resistant structure who is used for holding armature and two buting iron to keep apart between armature and twobuting iron, self -lubricating wear -resistant structure is for self -lubricating wear pad and/or be self -lubricating wear -resistant coating. The utility model discloses a rotating electromagnet utilizes the self -lubricating wear -resistant structure between armature and the buting iron to avoid the direct actuation of armature and buting iron together, has improved rotating electromagnet's reliability greatly.