Summary: the magnetic powder clutch and magnetic power brake are utilise magnetic powder  under the galvanomagnetic effect to transfer torque, It has advantages of magnetizing current and  transmit linear relationship and rapid response speed, simple structure, no impact, no vibration and no noise, no pollution .It is a multi-purpose, superior performance of automatic control components, widely used in various industries of machinery loading, brake and compressing loading system and rewinding tension control winding