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Helical Products Company, Inc.

A Series


A Series Flexible Aliminum CouplingThe 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/coupler is required. Helical's most popular coupling. An array of options, in a variety of diameter sizes, allows you to tailor the A Series to your specific applications. Configure A Series Couplings


  • No Maintenance
  • Shaft sizes from 3/32 to 3/4
Relief * Major and minor diameter shafts may enter flexure area during operation Diameter shaft diagram * Dark areas indicate relief within the coupling interior


Used for encoder/resolver applications, low torque pump, lead screw and various other applications.


Available in 7075-T6 Aluminum Alloy


Integral Clamp or Set Screw (2 at 120°)

Misalignment Compensation

  • 5° angular
  • .010 inch parallel offset
  • .010 inch axial motion

Technical Data

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