GK9 high power density high response permanent magnet servo motor, made by drawing the extensive application experience of GK6 and GK8 series in the market with an optimization design of high density magnetism gathering, adopting high density ferromagnetic material density structure with direct heat conduction of stator insulation system, full circle and no cogging torque. It aims at meeting high-speed, high-precision, high-response, and high-density requirements in robots, CNC machine tools and so on.