A Series - Aluminum

* Light to medium duty
* Non-Magnetic
* Economical
* No maintenance

The A Series meets performance demands over a wide range of applications, including drive systems for encoders, instrumentation, lead screws, small pumps, feed rollers and anywhere a light to medium duty torsionally flexible coupling is required. Helical's most popular coupling.

H Series - Stainless Steel

* High torque capacity
* High fatigue resistance
* Corrosion resistant steel (CRES)

The H Series coupling is ideal when high strength, excellent fatigue resistance and high torsional stiffness is called for in your application. The H Series' premium performance is designed for applications requiring a heavy-duty coupling, such as drive systems, small pumps, and gear boxes.