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0 - 4,500 Nm

ROTEX® clamping ring hubs

Jaw coupling with clamping ring hubs for fricitionally engaged shaft-hub-connections

ROTEX clamping ring hubs are torsionally flexible elastomer couplings with an integrated clamping system for frictionally engaged shaft-hub-connections.

Thanks to the integrated clamping system the ROTEX clamping ring hubs are able to transmit high friction torques. The internal clamping screws allow for easy assembly of the coupling.

Due to the rotation symmetry this type is additionally characterized by particularly smooth running.

  • Torsionally flexible shaft coupling / friction coupling with integrated clamping system
  • Friction connection for cylindrical shafts
  • Application up to a circumferential speed of 40 m/s
  • Particularly smooth running
  • High friction torques
  • Easy assembly by internal clamping screws
  • Finish bore up to Ø 50 mm acc. to ISO fit H7 from Ø 55 mm acc. to ISO fit G7
  • Complying with ATEX (acc. to EU directive 2014/34/EU)
  • UKEX compliant (according to UKEX Directive SI 2016:1107)
  • Vibration-damping
  • Axial, radial, angular compensation
  • Maintenance-free
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ROTEX® torsionally flexible jaw couplings are elastomer couplings characterized by a compact design.
In spite of low weights and mass moments of inertia of the elastomer couplings they are able to transmit high torques. The compact shaft couplings are characterized by a long service life and sound operating characteristics generated by allover machining.

Thanks to the elastomer (elastomer spider) between the coupling hubs of the jaw couplings shocks respectively torsional vibrations in the drive train are damped. The high temperature-resistant spider material T-PUR® (elastomer) is available in various degrees of hardness. The torsionally flexible ROTEX couplings are used in almost every range of general machinery and plant engineering.

Overview: torsionally flexible shaft couplings / elastomer couplings

Properties of torsionally flexible jaw couplings:
ROTEX shaft couplings consist of two hubs (aluminium or steel) and a spider (elastomer ring / cam ring) made of T-PUR. The different degrees of hardness of the T-PUR-spider allow to adjust the level of damping and torsional stiffness of the elastomer coupling.

ROTEX couplings require few mounting space and thus enable easy assembly/disassembly. The numerous types provide for maximum flexibility and meet with the different mounting requirements through various types of hubs.

Function of torsionally flexible jaw couplings:
Jaw couplings ensure torsional vibration-damping power transmission and absorb shocks generated by machines with irregular operation.
In contrast to flexible couplings the connecting elements of which are subjected to bending and therefore to earlier wear, the flexible teeth of ROTEX® couplings (elastomers) are subjected to compressive stress only. The benefit of the elastomer coupling thus is to resist significantly higher loads.

The elastomers become deformed with load and high speeds. Sufficient expansion space must be provided.

All sizes of ROTEX® elastomer couplings have a maximum torsion angle of 5°. They can be mounted both horizontally and vertically.

Material of torsionally flexible jaw couplings:
Our elastomer material T-PUR is resistant to higher temperatures and has a considerably longer service life than common polyurethanes. From a visual point of view we marked the T-Pur material by the colours orange (92 Shore A), purple (98 Shore A) and light green (64 Shore D).

The previous polyurethane spiders in the colours yellow, red and natural white with green marking of teeth continue to be available on request.

All ROTEX hubs of the same size

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