Magnetic Couplings

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Magnetic Couplings

specifically for Polyurethanes process.


Acc magnetique



general informations

The GMDO is a permanent magnet designed to transmit torque thanks to the magnetic field established between the inner and outer rotor. The use of magnetic couplings is recommended whenever it is necessary to hermetically separated two zones in order to prevent fluid or gas leakage from an area to another. An example application is fluid transfer pumps. In this applications the fluid must not come into contact with the external environment. The magnetic coupling also prevents the transmission of vibrations and axial / radial loads to the drive shaft.


Main benefits:

  • No fluid leakage
  • Maintenance free
  • Reduction of vibrations
  • Possibility to limit a maximum torque

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Some example applications:


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Application on low pressure foaming machine                                                 Application on MDF  wood gluing machine


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Application on high pressure machine for polyurethane                                           Application on storage plant



Application on Mixer



Main technical data

The Eddy currents , magnetic hysteresis and hydrodynamic resistance directly effect the overall efficiency of the magnetic coupling. They also generate overheating in the containment shroud (separator). Our company can offer innovative solutions to  limit and even completely eliminate this effects.


TECHNOPOLYMER containment shroud ( separator)


Max torque at 20°C:

  • from 0,02 to 2000 Nm

Maximum temperature:

  •  120°C ( with Ne magnets )
  • 300°C ( with SmCo magnets )


  • Up to 3600 rpm

Maximum Pressure into the containment shroud:

  • Stainless Steel AISI 304L :      30 Bars
  • Technopolymer :                         8 Bars