Magnet Torque Brake (Also be called: Torque Controller, Permanent Magnet Brake, Tension controller ) for Winding Machine can provide stable torque force by permanent magnetic field. It can output steady tensile force without any assistance of electrical parts. It provide wide range of tensile force and easy to tune for suitable tension. The parts is a good choice for the field which stable tensile force output needed. Because of no any sliding rub in the parts, it can be workable for long time.