KTR Kupplungstechnik GmbH | Rodder Damm 170 | 48432 Rheine  | T +49-5971798-0 | F +49-5971798-698


Product features

  • Flexible, vibration-reducing
  • Axial plug-in, easy assembly
  • Failsafe
  • Torques up to 35,000 Nm
  • Maintenance-free, easy to inspect visually
  • Standard material for spiders: T-PUR®


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Sales ROTEX®
T +49 (5971) 798-0
F +49 (5971) 798-698
E sales@ktr.com
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Engineering ROTEX®
T +49 (5971) 798-327
E info-rotex@ktr.com

ROTEX® couplings are characterized by small dimensions, low weight and low mass moments of inertia yet transmit high torques. Running quality and service life of the coupling are improved by accurate all-over machining. Their application is ideal for transmitting torque while damping torsional vibrations and absorbing shocks produced by the uneven operation of certain prime movers.

ROTEX® couplings are equipped with the new temperature resistant T-PUR® spider which is available in three different degrees of Shore hardness.



In contrast to other flexible couplings, the intermediate members of which are subject to bending stress and are therefore prone to earlier wear, the flexible teeth of ROTEX® couplings are subject to pressure only. This gives the additional advantage of the individual teeth being able to accept considerably higher loads.

The elastomer parts show deformation with load and excessive speeds. Sufficient space for expansion should be ensured.

The maximum torsion angle with ROTEX® couplings of any size amounts to 5°. They can be fitted both horizontally and vertically.

ATEX standard

ATEX standard

This type are certified and confirmed according to EC standard 94/9/EC (ATEX 95) as units of category 2G/2D and thus suitable for the use in hazardous areas of zone G1, G2, D21 and D22.

T-PUR® - The new heart of ROTEX®

T-PUR® - The new heart of ROTEX®

With the temperature-resistant polyurethane T-PUR of KTR the properties of the ROTEX® have been optimized importantly. T-PUR is a much more temperature-resistant and has a longer service life than polyurethane material. From the visual point of view we have characterized the material T-PUR® by the colours orange (92 Shore A), purple (98 Shore A) and pale green (64 Shore D). The previous spiders made from polyurethane in yellow, red and natural white with green ends will still be available. Up to size ROTEX® 90 inclusive single spiders are used. For ROTEX® couplings from size 100 to 180 the spider consists of DZ tooth segments as a standard. The single spider will still be available in these sizes as an option.


Spider generation T-PUR® (PDF)