0 - 35,000 Nm

ROTEX® Standard - torsionally flexible jaw coupling

The original - renowned industrial standard

The torsionally flexible jaw coupling ROTEX Standard is an elastomer coupling with feather keyway and particularly low-cost due to its simple structure. For mounting the hubs of the elastomer coupling are simply pushed onto the shafts and axially fastened via setscrews.

The coupling hubs of the flexible shaft coupling are available in the materials sintered steel, aluminium dieast, aluminium, cast iron and nodular iron.

Our flexible elastomer couplings ROTEX Standard are provided with splines acc. to DIN and SAE as a standard.

The torsionally flexible ROTEX couplings are suitable for universal use and applied as a flexible shaft connection in almost all ranges of general machinery and plant engineering.

  • Torsionally flexible coupling for torsional vibration-damping power transmission
  • Low-cost standard type
  • Spiders made of high temperature-resistant T-PUR
  • Splines acc. to DIN and SAE
  • Taper and inch bores
  • Complying with ATEX (acc. to EU directive 2014/34/EU)
  • UKEX compliant (according to UKEX Directive SI 2016:1107)
  • UL listed (fire pump applications)
  • Customized corrosion protection on request
  • Wide stock range for standard motors (IEC and NEMA) and hydraulic pumps
  • Compensating for radial displacement
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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® (elastomer). 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® (elastomer) 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.

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