The latest development from Atra-Flex is the Millennium series. It corresponds to the A series, but has an improved cam profile. This not only allows more torque to be transmitted, the hubs can also handle larger bores. A version with a radially liftable spacer is available.

A further development of the often copied A series is the T-Flex. Here, too, the essential feature is that the elastic inner part can be lifted out radially without having to move the coupling hubs. In contrast to the A series, the elastic inner part of the T-Flex is not subjected to shear stress. The retaining ring is designed here with a form-fit driver, so that the power density of this coupling system is significantly higher. This coupling system is also available with radially liftable spacers.

The A series was the beginning of a new series of couplings. The aim was a coupling system that has a simple structure and whose elastic inner parts can be exchanged with the simplest of means. This has been very successful with the construction of the A series. The elastic inner part can be removed radially from the coupling hubs. All you have to do is move the retaining ring axially. This coupling system is also available with radially liftable spacers.