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    Beam Couplings: Six-Beam F-Series, Clamp Style, Metric

    Clamp style F-Series six beam couplings (also referred to as helical couplings) with metric dimensions. Bore sizes from 5mm to 20mm.

    Features

    • Aluminum
      • Torsionally stiff with dampening
      • Lightweight for low inertia
      • Temperature range: -40°F to 225°F
    • Stainless Steel
      • High torque and torsional stiffness
      • Corrosion resistant
      • Temperature range: -40°F to 350°F
    • Multiple beam cuts improve parallel misalignment capabilities
    • Zero backlash
    • Constant velocity
    • RoHS3 and REACH Compliant
    • Maximum speed: 6,000 RPM
    • Bore tolerance: +.025mm/–.000mm
    Line DrawingLine Drawing

    How to Specify

    Part numbers are in the following format with numbers representing millimeters:

    Part Number Identification

    Products

    View as Grid Table

    Items 1-24 of 286

    Set Descending Direction
    1. Ruland FCMR16-5-5-A, Six Beam Coupling
      FCMR16-5-5-A
      As low as $36.95 $54.19
      Ruland FCMR16-5-5-A, 5mm x 5mm Six Beam Coupling, Aluminum, Clamp Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    2. Ruland FCMR16-5-5-SS, Six Beam Coupling
      FCMR16-5-5-SS
      As low as $92.21 $135.23
      Ruland FCMR16-5-5-SS, 5mm x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    3. Ruland FCMR16-6-5-A, Six Beam Coupling
      FCMR16-6-5-A
      As low as $36.95 $54.19
      Ruland FCMR16-6-5-A, 6mm x 5mm Six Beam Coupling, Aluminum, Clamp Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    4. Ruland FCMR16-6-5-SS, Six Beam Coupling
      FCMR16-6-5-SS
      As low as $92.21 $135.23
      Ruland FCMR16-6-5-SS, 6mm x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    5. Ruland FCMR16-6-6-A, Six Beam Coupling
      FCMR16-6-6-A
      As low as $36.95 $54.19
      Ruland FCMR16-6-6-A, 6mm x 6mm Six Beam Coupling, Aluminum, Clamp Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    6. Ruland FCMR16-6-6-SS, Six Beam Coupling
      FCMR16-6-6-SS
      As low as $92.21 $135.23
      Ruland FCMR16-6-6-SS, 6mm x 6mm Six Beam Coupling, Stainless Steel, Clamp Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    7. Ruland FCMR19-5-5-A, Six Beam Coupling
      FCMR19-5-5-A
      As low as $38.56 $56.56
      Ruland FCMR19-5-5-A, 5mm x 5mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    8. Ruland FCMR19-5-5-SS, Six Beam Coupling
      FCMR19-5-5-SS
      As low as $90.78 $133.14
      Ruland FCMR19-5-5-SS, 5mm x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    9. Ruland FCMR19-6-5-A, Six Beam Coupling
      FCMR19-6-5-A
      As low as $38.56 $56.56
      Ruland FCMR19-6-5-A, 6mm x 5mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    10. Ruland FCMR19-6-5-SS, Six Beam Coupling
      FCMR19-6-5-SS
      As low as $90.78 $133.14
      Ruland FCMR19-6-5-SS, 6mm x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    11. Ruland FCMR19-6-6-A, Six Beam Coupling
      FCMR19-6-6-A
      As low as $38.56 $56.56
      Ruland FCMR19-6-6-A, 6mm x 6mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    12. Ruland FCMR19-6-6-SS, Six Beam Coupling
      FCMR19-6-6-SS
      As low as $90.78 $133.14
      Ruland FCMR19-6-6-SS, 6mm x 6mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    13. Ruland FCMR19-7-5-A, Six Beam Coupling
      FCMR19-7-5-A
      As low as $38.56 $56.56
      Ruland FCMR19-7-5-A, 7mm x 5mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    14. Ruland FCMR19-7-5-SS, Six Beam Coupling
      FCMR19-7-5-SS
      As low as $90.78 $133.14
      Ruland FCMR19-7-5-SS, 7mm x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    15. Ruland FCMR19-7-6-A, Six Beam Coupling
      FCMR19-7-6-A
      As low as $38.56 $56.56
      Ruland FCMR19-7-6-A, 7mm x 6mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    16. Ruland FCMR19-7-6-SS, Six Beam Coupling
      FCMR19-7-6-SS
      As low as $90.78 $133.14
      Ruland FCMR19-7-6-SS, 7mm x 6mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    17. Ruland FCMR19-7-7-A, Six Beam Coupling
      FCMR19-7-7-A
      As low as $38.56 $56.56
      Ruland FCMR19-7-7-A, 7mm x 7mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    18. Ruland FCMR19-7-7-SS, Six Beam Coupling
      FCMR19-7-7-SS
      As low as $90.78 $133.14
      Ruland FCMR19-7-7-SS, 7mm x 7mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    19. Ruland FCMR19-8-5-A, Six Beam Coupling
      FCMR19-8-5-A
      As low as $38.56 $56.56
      Ruland FCMR19-8-5-A, 8mm x 5mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    20. Ruland FCMR19-8-5-SS, Six Beam Coupling
      FCMR19-8-5-SS
      As low as $90.78 $133.14
      Ruland FCMR19-8-5-SS, 8mm x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    21. Ruland FCMR19-8-6-A, Six Beam Coupling
      FCMR19-8-6-A
      As low as $38.56 $56.56
      Ruland FCMR19-8-6-A, 8mm x 6mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    22. Ruland FCMR19-8-6-SS, Six Beam Coupling
      FCMR19-8-6-SS
      As low as $90.78 $133.14
      Ruland FCMR19-8-6-SS, 8mm x 6mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    23. Ruland FCMR19-8-7-A, Six Beam Coupling
      FCMR19-8-7-A
      As low as $38.56 $56.56
      Ruland FCMR19-8-7-A, 8mm x 7mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    24. Ruland FCMR19-8-7-SS, Six Beam Coupling
      FCMR19-8-7-SS
      As low as $90.78 $133.14
      Ruland FCMR19-8-7-SS, 8mm x 7mm Six Beam Coupling, Stainless Steel, Clamp Style, 19.1mm OD, 31.8mm Length
      Add to Compare
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    Browse By

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    Shopping Options
    Bore (B1)
    1. 5 mm 4 items
    2. 6 mm 10 items
    3. 7 mm 10 items
    4. 8 mm 16 items
    5. 9 mm 12 items
    6. 10 mm 18 items
    7. 11 mm 24 items
    8. 12 mm 30 items
    9. 13 mm 20 items
    10. 14 mm 24 items
    11. 15 mm 28 items
    12. 16 mm 14 items
    13. 17 mm 16 items
    14. 18 mm 18 items
    15. 19 mm 20 items
    16. 20 mm 22 items
    Small Bore (B2)
    1. 5 mm 12 items
    2. 6 mm 22 items
    3. 7 mm 16 items
    4. 8 mm 28 items
    5. 9 mm 22 items
    6. 10 mm 40 items
    7. 11 mm 34 items
    8. 12 mm 28 items
    9. 13 mm 22 items
    10. 14 mm 18 items
    11. 15 mm 14 items
    12. 16 mm 10 items
    13. 17 mm 8 items
    14. 18 mm 6 items
    15. 19 mm 4 items
    16. 20 mm 2 items
    Material
    1. 303 Stainless Steel 143 items
    2. Aluminum 143 items
    Outer Diameter (OD)
    1. 0.625 in (15.9 mm) 6 items
    2. 0.750 in (19.1 mm) 20 items
    3. 1.000 in (25.4 mm) 56 items
    4. 1.250 in (31.8 mm) 72 items
    5. 1.500 in (38.1 mm) 132 items
    Length (L)
    1. 1.000 in (25.4 mm) 6 items
    2. 1.250 in (31.8 mm) 20 items
    3. 1.500 in (38.1 mm) 56 items
    4. 1.750 in (44.5 mm) 72 items
    5. 2.250 in (57.2 mm) 132 items
    Static Torque
    1. 1.47 Nm 3 items
    2. 2.04 Nm 3 items
    3. 2.26 Nm 4 items
    4. 2.71 Nm 3 items
    5. 2.82 Nm 7 items
    6. 2.94 Nm 3 items
    7. 3.28 Nm 6 items
    8. 3.51 Nm 7 items
    9. 3.73 Nm 12 items
    10. 3.95 Nm 2 items
    11. 4.40 Nm 13 items
    12. 4.42 Nm 1 item
    13. 4.64 Nm 3 items
    14. 4.86 Nm 6 items
    15. 5.08 Nm 8 items
    16. 5.65 Nm 9 items
    17. 5.66 Nm 12 items
    18. 5.80 Nm 7 items
    19. 6.00 Nm 2 items
    20. 6.89 Nm 5 items
    21. 7.68 Nm 1 item
    22. 7.91 Nm 1 item
    23. 9.04 Nm 27 items
    24. 9.49 Nm 11 items
    25. 10.73 Nm 13 items
    26. 11.32 Nm 21 items
    27. 11.75 Nm 11 items
    28. 12.43 Nm 14 items
    29. 13.56 Nm 1 item
    30. 14.60 Nm 9 items
    31. 16.08 Nm 6 items
    32. 16.38 Nm 17 items
    33. 16.42 Nm 10 items
    34. 19.82 Nm 13 items
    35. 21.52 Nm 14 items
    36. 23.53 Nm 1 item
    Parallel Misalignment
    1. 0.20 mm 26 items
    2. 0.38 mm 128 items
    3. 0.76 mm 132 items
    Axial Motion
    1. 0.13 mm 26 items
    2. 0.25 mm 128 items
    3. 0.38 mm 132 items
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