1 - 10 Nm

MINEX®-H hysteresis coupling

Applicable as a coupling or a brake

The MINEX-H hysteresis coupling transmits torque from the driving to the driven element without contact via magnetic forces (wear-free torque transmission).

Operation of the hysteresis coupling:

Having reached the maximum torque, the MINEX-H hysteresis coupling switches to slipping operation, thus ensuring wear-free torque limitation.

As long as the operating torque is less than the selected torque (slipping torque), the speed is transmitted synchronously. As soon as the operating torque exceeds the selected torque, the coupling slips and there is a relative speed between driving and driven side. At this moment the polarity of the hysteresis material is continuously reversed and it heats up. The holding torque with overload remains almost constant but might lightly rise with an increasing relative speed and the resulting losses of eddy current.

Typical applications of the hysteresis coupling:

  • filling lines
  • conveyor technology
  • winder drives
  • capping machines
  • medical technology
     
Features
  • Maintenance-free hysteresis coupling by contactless torque transmission via magnetic forces
  • Wear-free torque limitation
  • Load-holding
  • Very good torque repeatability
  • Maintenance-free
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Function of the MINEX-H hysteresis coupling

With the MINEX® hysteresis coupling the torque is transmitted from the driving to the driven element without contact via magnetic forces.

As long as the operating torque falls below the selected torque (slipping torque), the speed is transmitted synchronously. As soon as the operating torque exceeds the selected torque, the coupling slips and there is a relative speed between driving and driven side. The polarity of the hysteresis material is continuously reversed which is then heated. The holding torque with overload remains almost constant, but might lightly rise with an increasing relative speed and the resulting losses of eddy current.
 

General description of magnetic couplings:

The magnetic couplings of the MINEX® range are permanent-magnetic couplings transmitting the torque without contact through magnetic forces between two magnetic rotors. The standard type MINEX®-S with containment shroud and magnets positioned radially ensures hermetic separation of driving and driven side in pumps and agitators. 

As a hysteresis coupling version it is in turn suitable as a wear-free overload protection alternatively to classical safety couplings. With the disk coupling which is optionally available the magnets face each other axially so that torques can be transmitted through plane walls. The transmittable torque can be varied by adjusting the air gap.

MINEX-H - Hysterisis coupling - Advantages and applications