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Hysteresis clutches transmit torque based on electromagnetic principles and using hysteresis. It has an essentially linear relationship between excitation current and transmission torque. It is able to transmit a certain torque regardless of the slip. It has the advantages of fast response, simple structure, no pollution, no noise, no shock vibration and energy saving. It is a versatile, superior automatic control element. Magnetic powder brakes are widely used for braking, power test loading, and unwinding tension control in various machines. Magnetic clutches are widely used for buffer start, overload protection, speed regulation, tension control in winding systems, etc.
Basic features:
1. Excitation Current - Torque Characteristics Exciting current and torque are basically linear, and the magnitude of the torque can be controlled by adjusting the excitation current.
2, speed - torque characteristics of torque and speed has nothing to do, keep the fixed value. (When the magnetizing current is constant, the torque is not affected by the change of the rotation speed in the permissible slip speed range.) There is no difference between the static torque and the dynamic torque.
3. Load characteristics The allowable slip power of the magnetic powder brake is a fixed value when the heat dissipation conditions are constant. In the actual selection of the type, the practical slip power must be within the allowable slip power. When the use of high speed, need to reduce the use of torque.
4. Selection of magnetic powder brakes and magnetic powder clutches are generally selected based on the required large torque to be transmitted, and attention should be paid to ensure that the actually used slip power should be less than the allowable slip power of the technical parameters. Better service life.
Hysteresis clutches (hysteresis brakes) for tension control, overload protection, torque loaders, etc. Such as printing presses, paper machines, rewinders, wire drawing machines, metal calenders, film processing machines, textile machinery, etc.; Motor, engine, hydraulic machine reducer and other loading devices when loading experiments.