Industrial magnetic powder brakes (also known as magnetic powder electromagnetic brakes (brakes), magnetic particle brakes) are industrial braking devices that control torque through electromagnetic induction. The core principle is to use magnetic powder to generate viscous force under the action of a magnetic field, thereby controlling the braking torque. This gives them features such as high precision, no contact wear, and adjustable torque, making them widely used in various mechanical transmission systems. These brakes combine the smoothness of fluid brakes with the efficiency of friction brakes, making them suitable for applications requiring stable control, such as paper winding, wire processing, and tape production.