The utility model discloses a high speed of low brow leakage does not have stator core permanent -magnet machine, include pivot, outer rotor core, permanent magnet, drag cup stator, interior rotor core and encircle the permanent magnet tip clamping ring that constitutes by separating magnetic ring and magnetic conduction. Outer rotor core and interior rotor core install in the pivot, and rotor core internal diameter side outside is installed to the permanent magnet, and outer rotor core, permanent magnet pass sub - iron core in and all along with the pivot synchronous revolution, by separate permanent magnet tip clamping ring that magnetic ring and magnetic conduction ring constitute install the outer rotor end outside with rotor core outside compressing tightly and permanent magnet, the drag cup stator inserts inside and outside rotor annular gap within a definite time and installs and fix on the casing. The magnetic flow that the permanent magnet produced constitutes closed magnetic circuit through outer rotor core, drag cup stator, interior rotor core and the air gap between them. Permanent magnet brow leakage channel qi crack, magnetic conduction ring, outer rotor core return the permanent magnet, have avoided the magnetic leakage outdiffusion, separate the magnetic ring and then prevent the end magnetic field short circuit.