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Sales Servo Couplings
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Engineering ROTEX® GS
T: +49 5971 798-0
E: info-rotex-gs@ktr.com

1.8 - 200 Nm

ROTEX® GS expansion hub hollow shaft coupling

Backlash-free servo coupling (hollow shaft coupling) for hollow shafts

ROTEX GS expansion hubs (hollow shaft coupling) are used when torques have to be transmitted through a hollow shaft, e. g. applications with short shaft distances or narrow mounting conditions.

With this hollow shaft coupling the simple, safe and frictionally engaged shaft-hub-connection is generated via a centric screw. The hubs are made of aluminium and the expansion mandrel is made of steel.

Features
  • Hollow shaft coupling with an integrated clamping system for hollow shaft connections
  • Compact
  • Quick assembly
  • Self-centering clamping connection
  • Can be combined with various hub types
  • Torsionally flexible
  • Axial plug-in
  • Axial, radial, angular compensation
  • Complying with ATEX
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Servo coupling general description:

Our servo couplings are torsionally stiff shaft couplings soft in bending serving as a connection element between drive unit and measuring sensor. They transmit the torque free from backlash and conformally, making our backlash-free shaft couplings highly accurate. They also allow for compensation of radial, axial and angular displacements. Thanks to the high variety of coupling types and hub designs we are able to supply the right coupling for almost every application.

Backlash-free properties of servo couplings:

Apart from the jaw geometry of the coupling hubs, the backlash-free properties of the ROTEX® GS backlash-free servo couplings (elastomer couplings) are mainly based on the geometry of the ROTEX® GS spiders. They are designed in that they fit the concave jaws of the coupling hub with the convex teeth of the spider. Combined with the straight spline this results in lower surface pressure and higher stiffness of the coupling system.

Flexible spiders of servo couplings:

The flexible spiders of our elastomer couplings are available in five different kinds of Shore hardness. This allows to easily adjust the coupling to the individual specifications of an application in terms of torsional stiffness and vibration characteristics. The teeth of the spider compensating for displacements are radially supported in the internal diameter by a web. In this way excessive internal or external deformation with strong acceleration or high speeds are prevented. The permissible ambient temperature depends on the Shore hardness of the spider.

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