CAD Flexible Couplings

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Highly flexible coupling allows for above-average shaft displacement compensation

The Purflex coupling is designed for applications particularly focused on damping torsional oscillations or shock vibration and above-average shaft displacement compensation. This is made possible by a loop-shaped compensation element made of polyurethane.

Product range

  • 4 sizes with outer diameters from 29 to 54 mm
  • Maximum torques up to 4.5 Nm
  • Angular displacement up to 12°
  • Radial displacements up to 3 mm
  • Bore diameter from 4 to 16 mm

> Angular and parallel displacement up to 12° and 3 mm respectively

The vibration-damping element provides bending flexibility in any displacement direction to compensate angular errors of up to maximum 12° or parallel displacements of up to 3 mm depending on the coupling outer diameter. Shaft bearing loads are also minimised by the elastic properties of the compensation element. The set screw hubs are zinc-plated. In addition, the middle element provides good resistance to various media such as petrol, oil, benzene, glycols, solvents and several chemicals. The Purflex coupling operates in a temperature range from -30°C up to +80°C.



Datasheet Purflex PFS


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