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.

Showing 61–75 of 112 results

AR112-12-12
$219.36

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

Add to Cart AR112-12-12 Details
AR112-12-8
$219.36

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

Add to Cart AR112-12-8 Details
AR112-16-10
$219.36

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

Add to Cart AR112-16-10 Details
AR112-16-12
$219.36

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

Add to Cart AR112-16-12 Details
AR112-16-16
$219.36

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

Add to Cart AR112-16-16 Details
AR112-16-8
$219.36

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

Add to Cart AR112-16-8 Details
AR112-20-16
$219.36

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

Add to Cart AR112-20-16 Details
AR125-10MM-12
$244.70

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

Add to Cart AR125-10MM-12 Details
AR125-12-12
$244.70

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

Add to Cart AR125-12-12 Details
AR125-12-8
$244.70

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

Add to Cart AR125-12-8 Details
AR125-16-12
$244.70

Outside Diameter: 1 1/4 in
Length: 1 1/4 in
Major Bore: 1/2 in
Minor Bore: 1/2 in

Add to Cart AR125-16-12 Details
AR125-16-16
$244.70

Outside Diameter: 1 1/4 in
Length: 1 1/4 in
Major Bore: 1/2 in
Minor Bore: 1/2 in

Add to Cart AR125-16-16 Details
AR125-20-12
$244.70

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

Add to Cart AR125-20-12 Details
AR125-20-20
$244.70

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

Add to Cart AR125-20-20 Details
AR125-20-8
$244.70

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

Add to Cart AR125-20-8 Details

A Series

Flexible Aluminum Set Screw Couplings

AR112-12-12

AR112-12-8

AR112-16-10

AR112-16-12

AR112-16-16

AR112-16-8

AR112-20-16

AR125-10MM-12

AR125-12-12

AR125-12-8

AR125-16-12

AR125-16-16

AR125-20-12

AR125-20-20

AR125-20-8

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