The new generation of series suction cups and all types of machine tools, with suction, use safe and reliable characteristics. For the mechanical clamping workpiece positioning is very convenient, suction greater than 150N/cm2. Selected high-quality, low carbon content, a guide magnetic properties of excellent steel manufacturing, the excitation coil after strict impregnation treatment, so chuck to work, good performance, large suction, low remanence, temperature rise is small, safe and reliable, long service life, and is suitable for use in various operating environments.