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.

  • AE050-4-4 Helical A Series Flexible Aluminum Set Screw Couplings

    AE050-4-4

    Outside Diameter: 1/2 in
    Length: 0.55 in
    Major Bore: 1/8 in
    Minor Bore: 1/8 in

  • AE062-5-5 Helical A Series Flexible Aluminum Set Screw Couplings

    AE062-5-5

    Outside Diameter: 5/8 in
    Length: 0.66 in
    Major Bore: 5/32 in
    Minor Bore: 5/32 in

  • AE075-6MM-6MM Helical A Series Flexible Aluminum Set Screw Couplings

    AE075-6MM-6MM

    Outside Diameter: 3/4 in
    Length: 7/8 in
    Major Bore: 6 mm
    Minor Bore: 6 mm

  • AE075-8-8 Helical A Series Flexible Aluminum Set Screw Couplings

    AE075-8-8

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

  • AE087-10-8 Helical A Series Flexible Aluminum Set Screw Couplings

    AE087-10-8

    Outside Diameter: 7/8 in
    Length: 1 in
    Major Bore: 5/16 in
    Minor Bore: 1/4 in

  • AE087-12-6 Helical A Series Flexible Aluminum Set Screw Couplings

    AE087-12-6

    Outside Diameter: 7/8 in
    Length: 1 in
    Major Bore: 3/8 in
    Minor Bore: 3/16 in

  • AE100-12-12 Helical A Series Flexible Aluminum Set Screw Couplings

    AE100-12-12

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

  • AE100-8-8 Helical A Series Flexible Aluminum Set Screw Couplings

    AE100-8-8

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

  • AE112-12-12 Helical A Series Flexible Aluminum Set Screw Couplings

    AE112-12-12

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

  • AE112-12.79MM-12.79MM Helical A Series Flexible Aluminum Set Screw Couplings

    AE112-12.79MM-12.79MM

    Outside Diameter: 1 1/8 in
    Length: 1 1/2 in
    Major Bore: 12.79 mm
    Minor Bore: 12.79 mm

  • AE112-16-10 Helical A Series Flexible Aluminum Set Screw Couplings

    AE112-16-10

    Outside Diameter: 1 1/8 in
    Length: 1 1/2 in
    Major Bore: 1/2 in
    Minor Bore: 5/16 in

  • AE112-16-12 Helical A Series Flexible Aluminum Set Screw Couplings

    AE112-16-12

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

  • AE112-16-16 Helical A Series Flexible Aluminum Set Screw Couplings

    AE112-16-16

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

  • AE112-16-9.60MM Helical A Series Flexible Aluminum Set Screw Couplings

    AE112-16-9.60MM

    Outside Diameter: 1 1/8 in
    Length: 1 1/2 in
    Major Bore: 1/2 in
    Minor Bore: 9.60 mm

  • AE112-20-6MM Helical A Series Flexible Aluminum Set Screw Couplings

    AE112-20-6MM

    Outside Diameter: 1 1/8 in
    Length: 1 1/2 in
    Major Bore: 5/8 in
    Minor Bore: 6 mm

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