A Series

Flexible Aluminum Set Screw Couplings

The Helical A Series Flexible Aluminum Couplings meet performance demands across a wide range of applications, including drive systems for encoders, instrumentation, lead screws, small pumps, feed rollers, and other light to medium-duty uses requiring torsional flexibility. As Helical’s most popular coupling, the A Series offers an array of options and diameter sizes, allowing customization to fit specific applications. These couplings require no maintenance, accommodate shaft sizes from 3/32” to 3/4”, and are available in 7075-T6 Aluminum Alloy with a set screw attachment.

  • AEM050-3MM-3MM Helical A Series Flexible Aluminum Set Screw Couplings

    AEM050-3MM-3MM

    Outside Diameter: 1/2 in
    Length: 0.55 in
    Major Bore: 3 mm
    Minor Bore: 3 mm

  • AEM075-8-8 Helical A Series Flexible Aluminum Set Screw Couplings

    AEM075-8-8

    Outside Diameter: 3/4 in
    Length: 7/8 in
    Major Bore: 1/4 in
    Minor Bore: 1/4 in

  • AEM100-10MM-10MM Helical A Series Flexible Aluminum Set Screw Couplings

    AEM100-10MM-10MM

    Outside Diameter: 1 in
    Length: 1 1/4 in
    Major Bore: 10 mm
    Minor Bore: 10 mm

  • AEM100-12MM-10MM Helical A Series Flexible Aluminum Set Screw Couplings

    AEM100-12MM-10MM

    Outside Diameter: 1 in
    Length: 1 1/4 in
    Major Bore: 12 mm
    Minor Bore: 10 mm

  • AEM100-6MM-6MM Helical A Series Flexible Aluminum Set Screw Couplings

    AEM100-6MM-6MM

    Outside Diameter: 1 in
    Length: 1 1/4 in
    Major Bore: 6 mm
    Minor Bore: 6 mm

  • AEM100-8MM-8MM Helical A Series Flexible Aluminum Set Screw Couplings

    AEM100-8MM-8MM

    Outside Diameter: 1 in
    Length: 1 1/4 in
    Major Bore: 8 mm
    Minor Bore: 8 mm

  • AEM112-12MM-10MM Helical A Series Flexible Aluminum Set Screw Couplings

    AEM112-12MM-10MM

    Outside Diameter: 1 1/8 in
    Length: 1 1/2 in
    Major Bore: 12 mm
    Minor Bore: 10 mm

  • AEM112-16-10MM Helical A Series Flexible Aluminum Set Screw Couplings

    AEM112-16-10MM

    Outside Diameter: 1 1/8 in
    Length: 1 1/2 in
    Major Bore: 1/2 in
    Minor Bore: 10 mm

  • AEM112-16-12 Helical A Series Flexible Aluminum Set Screw Couplings

    AEM112-16-12

    Outside Diameter: 1 1/8 in
    Length: 1 1/2 in
    Major Bore: 1/2 in
    Minor Bore: 3/8 in

  • AR037-4-3 Helical A Series Flexible Aluminum Set Screw Couplings

    AR037-4-3

    Outside Diameter: 3/8 in
    Length: 3/8 in
    Major Bore: 1/8 in
    Minor Bore: 3/32 in

  • AR050-3MM-3MM Helical A Series Flexible Aluminum Set Screw Couplings

    AR050-3MM-3MM

    Outside Diameter: 1/2 in
    Length: 1/2 in
    Major Bore: 3 mm
    Minor Bore: 3 mm

  • AR050-4-3 Helical A Series Flexible Aluminum Set Screw Couplings

    AR050-4-3

    Outside Diameter: 1/2 in
    Length: 1/2 in
    Major Bore: 1/8 in
    Minor Bore: 3/32 in

  • AR050-4-4 Helical A Series Flexible Aluminum Set Screw Couplings

    AR050-4-4

    Outside Diameter: 1/2 in
    Length: 1/2 in
    Major Bore: 1/8 in
    Minor Bore: 1/8 in

  • AR050-4M-4M Helical A Series Flexible Aluminum Set Screw Couplings

    AR050-4M-4M

    Outside Diameter: 1/2 in
    Length: 1/2 in
    Major Bore: 0.12 in
    Minor Bore: 0.12 in

  • AR050-5-5 Helical A Series Flexible Aluminum Set Screw Couplings

    AR050-5-5

    Outside Diameter: 1/2 in
    Length: 1/2 in
    Major Bore: 5/32 in
    Minor Bore: 5/32 in

Scroll to Top