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0 - 5,600 Nm

EVOLASTIC® EFH/EFHP highly flexible coupling

Highly flexible flange coupling for various applications

The coupling type EFH/EFHP is a highly flexible flange coupling with SAE and special dimensions for mounting on I. C.-engines. This type is characterized by a connection flange made of steel and is available in six SAE flange sizes.

Subject to its torsionally soft property it serves for insulating vibrations and acoustics in the drive train.

In addition to transmitting the torque the coupling compensates for axial, radial and angular misalignment while absorbing overload flexibly.

Type EFH can be screwed in axially and is available in ten sizes.
Type EFHP can be plugged in axially and is available in seven sizes.

Both types are available in two materials - NR and on request EPDM.
The maximum operating temperature of the element is 90 °C (NR) resp. 110 °C (EPDM).

The radial hub is available as type 1.0 (feather keyway and setscrew), 3.0 (spline toothing) and 3.1 (spline/clamping hub N).

  • Highly flexible coupling
  • Suitable for mounting of flywheels of I. C.-engines with SAE and special flange dimensions
  • Versatile application in mechanical and plant engineering
  • Damping torsional vibrations
  • Maintenance-free subject to material combination elastomer/steel
  • Available in various kinds of Shore hardness SN and MN
  • Elastomer materials NR and on request EPDM
  • Compensating for misalignment on driving and driven end
  • Available as axial plug-in and screw-in versions
  • Max. circumferential speed vmax=56 m/s
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The key component of the series is a vulcanised, circularly closed elastomer element made of natural rubber  (WN, SN, MN, up to  90 °C) or for higher temperatures made of synthetical EPDM material (WE, SE, ME, up to 110 °C).

The different kinds of rubber hardness cover one application and torque range per size.
The designing principle ensures a precise prestress in the elastomer.

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