The electromagnetic brake is a connector will convey the active side torsion to passive side, can according to need, free cutting off or brake, due to the use of electromagnetic force to move, electromagnetic clutch brake, say, has the advantages of fast response, simple structure, mechanical hardware equipment widely used. Electromagnetic brake mainly prominent in terms of performance: high speed response, durability, easy maintenance, assembly does not need to wear adjustment, reliable action, can make torque adjustment.