HELICAL H SERIES, Stainless Steel, Technical Data
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Basic Model Number Dimensional Information Standard Bore Diameters Performance Data Inertia Screw Size Seating Torque Center Line Integral Clamp Attachment Set Screw Attachment Outside Diameter Designator D  Outside Diameter (in.) L Length (in.) (+.002in/-.000in) Note 6   Momentary Dynamic Torque Note 2 (lbin) Torsional Rate (degree/lbin) x.10-5 (lbinsec2) Note 7 Integral Clamp Note 4 Set Screw Note 4 (lbin) (in.) Size  in.& (mm)   Bore Designator (1/32nd in.) HCR   050 1/2 0.75 0.094 (2.39) 0.125 (3.18) 3 4 7.5 7.0 0.36 0.48 .31 1-72   4.0 .09   HR 0.50 0.19     2-56 1.3 .06 HCR   062 5/8 0.80 0.125 (3.18) 0.157 (3.99) 0.188 (4.78) 4 5 6 14 13 12 0.19 0.24 0.31 0.78 2-56   4.5 .10   HR 0.62 0.58   4-40 4.3 .07 HCR   075 3/4 0.90 0.125 (3.18) 0.157 (3.99) 0.188 (4.78) 0.250 (6.35) 4 5 6 8 21 20 20 17 0.11 0.13 0.16 0.25 1.8 4-40   10 .12   HR 0.75 1.5   6-32 8.0 .09 HCR   087 7/8 1.06 0.188 (4.78) 0.250 (6.35) 0.313 (7.95) 6 8  10* 37 34 30 0.072 0.10 0.15 4.1 6-32   19 .15   HR 0.87 3.3   6-32 8.0 .10 HCR   100 1 1.25 0.250 (6.35) 0.313 (7.95) 0.375 (9.53) 8 10 12 52 47 42 0.062 0.086 0.12 8.3 6-32   19 .15   HR 1.00 6.5   10-32 25 .15 HCR   112 11/8 1.5 0.250 (6.35) 0.313 (7.95) 0.375 (9.53)  0.500 (12.70) 8 10 12 16 83 78 71 55 0.035 0.045 0.061 0.12 15.6 6-32   19 .15   HR 1.12 11.3   10-32 25 .14 HCR   125 11/4 1.62 0.375 (9.53)  0.500 (12.70)  0.625 (15.88) 12  16*  20* 94 77 57 0.041 0.071 0.130 26.0 10-32   56 .22   HR 1.25 19.4   1/4-28 65 .16

*Refer to note 8

Notes
1. Shaft misalignments:

    Angular 5 degrees
    Parallel Offset .010 in. (.020 in. T.I.R.)
    Axial Motion + .010 in.

2. 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, contact us for analysis.

3. Material: 7075-T6 aluminum alloy used for ACR / AR series.

    Finish: clear anodize

 or  Material: 17-4 PH high-strength stainless steel used for HCR / HR series.

      Finish: natural

4. Metric fasteners available on request.

5. Manufacturing dimensional tolerances unless otherwise specified are:

    fraction + 1/64
    x.xx + .01

6. Click here for other available bore dimensions

7. Inertia is based on smallest standard bore diameter.

8. With integral clamp attachments only, this bore size requires an operating clearance diameter greater than coupling outside diameter.