ROTEX® GS expansion hub

1.8 - 200 Nm / hollow shaft coupling

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: small shaft distance dimension
quick assembly
self-centering clamping connection
can be combined with various hub types

Product Details

Specifications for: ROTEX® GS expansion hub

With the coupling configurator for the backlash-free jaw coupling ROTEX GS you can determine which coupling type and size fits your requirements and directly get the matching technical data.

Go to configurator

description of ROTEX GS servo couplings:

Our ROTEX GS 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. This makes our backlash-free shaft couplings highly accurate. They also allow for simultaneous 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 condition of ROTEX GS servo coupling:

Apart from the jaw geometry of the coupling hubs, zero backlash of the ROTEX® GS backlash free servo couplings (elastomer couplings) is largely based on the geometry of the ROTEX® GS spiders. They are designed in that the convex teeth of the spider fit the concave jaws of the coupling hub under prestress. Combined with the straight spline there is low surface pressure and higher stiffness of the coupling system.

Spiders of ROTEX GS servo coupling:

The flexible spiders of our servo couplings are available in five different kinds of Shore hardness. This allows to easily adapt the coupling to the individual conditions of an application considering the torsion stiffness and vibration characteristics.

The teeth of the spider absorb the displacements und are radially supported in the internal diameter by a web. With strong accelerations or high speeds this prevents too high internal or external deformation. The permissible ambient temperature depends on the spider's Shore hardness.