Electric permanent magnetic chuck: 1. Super strong magnetic force that be able to reach 1,000kg per 100square centimeter. 2. Permanent magnetic disk electric control structural design.Magnetizing and demagnetizing in 2 seconds. Don't need continuous power supply in operation. No temperature rise in operation. Long life service.No impact on precision by work piece deformation from temperature rise. 3. Work with magnetic-inductive soft claw. Smooth cutter movement in maching. Able to complete 5-face machining,drilling,tapping,groove milling and forming in one-pass operation. 4. Improve efficiencygreatly. Decrease repetitive tolerance and satisfy precision requirement. 5. Shorten work piece device time thoroughly. 6. The clamping area can cover the complete machining area on average. Able to machine several work pieces.Optimize workflow time.