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Contact USA Inside SalesCatherine Topar
Ph: 203-334-7537
Fx: 203-334-7792
Email: ctopar@e-jpc.com
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  • Light to medium duty
  • Non-magnetic
  • Economical
  • No maintenance
The A Series coupling 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.

  • No maintenance
  • Shaft sizes from 3/32 to 3/4
An array of options, in a variety of diameter sizes, allows you to tailor the A or H Series to your specific applications. A and H Series options include set screw or integral clamp attachments and inch or metric bores.
Unit of Measure

Product Type

 N/A Coupling

Series

 N/A ACR

Type

 N/A Integral Clamp Attachment

Material

 N/A 7075-T6 Aluminum Alloy

Finish

 N/A Clear Anodize

Outside Diameter Designator

 N/A 125

Outside Diameter (D)

 N/A 1 1/4 in

Length (L)

 N/A 1.62 in

Size (+0.002 in/-0.000 in)

 N/A 0.625 in15.88 mm

Bore Designator

 N/A 20
Momentary Dynamic Torque1 N/A 29 lb·in

Torsional Rate

 N/A 0.37 degree/lb·in
Inertia2 N/A 9.3 x 10-5 lb.in.sec2
Screw Size3 N/A 10 - 24

Seating Torque

 N/A 50 lb·in

Center Line

 N/A 0.22 in

Min. Size

 N/A 0.313 in7.94 mm

Max. Size

 N/A 0.625 in15.88 mm

Max. Bore Diameter

 N/A 0.669 in17.00 mm

Bore Depth

 N/A 0.51 in12.95 mm

Note

 N/A
  1. Shaft misalignments:
    Angular 5 degrees
    Parallel Offset 0.030 in. (0.060 in. T.I.R)
    Axial Motion ±0.010 in.
  2. Manufacturing dimensional tolerances unless otherwise specified are:
    fraction ± 1/64
    x.xx ± .01 in.
  3. With integral clamp attachments only, this bore size requires an operating clearance diameter greater than coupling outside diameter.
  • 1 Dynamic torque ratings are momentary values. For non-reversing applications, divide by 2. Divide by 4 for reversing applications. Should the torque ratings be marginal for your application.
  • 2 Inertia is based on smallest standard bore diameter.
  • 3 Metric Fasteners available on request