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Product characteristics

-Backlash-free shaft connection under prestress

-Small dimensions - low flywheel mass

-Maintenance free, easy to check visually

-Various kinds of elastomer hardness of spiders

-Finish bore according to ISO fit H7 (except for clamping hub),

feathter key optionally available from Ø 6 mm according to DIN 6885 sheet 1 - JS9

- Ex Approved  according to EC Standard 94/9/EC (without feather key according to category 3)


Description of coupling

ROTEX® GS is a three-part, axial plug-in coupling backlash-free under pre-stress. In spite of its vibration-damping characteristics it is torsionally stiff so that it is not necessary to make any concessions to accuracy even with highly dynamic servo drives. ROTEX® GS is available in different types of hubs which can be combined within one coupling size.


The hub claws and the nylon teeth are chamfered to allow for a "blind assembly". The pegs arranged reciprocally on the spider prevent the spider from touching the hub over the entire surface. Observing the distance dimension E ensures the ability of the coupling to compensate for displacements. The plug-in force varies depending on the Shore hardness and prestress of the spider (see comments in the mounting instructions KTR-N 45510).

By observing the gap dimension "s" the electrical isolation is ensured, as well as a high service life of the coupling. This fact is gaining more and more importance, due to the increasing precision of shaft encoders and the existing demand for electro-magnetic compatibility.

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

Backlash-free ROTEX GS Catalog PDF   (1.8 Mb.) Back to KTR Products