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    Beam Couplings: Six-Beam F-Series, Inch to Metric

    Clamp style F-Series six beam couplings (also referred to as helical couplings) with inch to metric bores. Bore sizes from 0.188" to 3/4" and 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
    • Zero backlash, Constant velocity
    • RoHS2 and REACH Compliant
    • Maximum speed: 6,000 RPM
    • Bore tolerance:
      +.001 in / -.000 in
      +.025mm/–.000mm
    • Temperature range: -40°F to 225°F
    Line DrawingLine Drawing

    How to Specify

    Part numbers are in the following format with numbers representing sixteenths of an inch and millimeters:

    Part Number Identification

    Products

    View as Grid Table

    Items 1-24 of 420

    Set Descending Direction
    1. Ruland FCR10-1/4"-5MM-A, Six Beam Coupling
      FCR10-1/4"-5MM-A
      As low as $36.23 $53.13
      Ruland FCR10-1/4"-5MM-A, 1/4" x 5mm Six Beam Coupling, Aluminum, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    2. Ruland FCR10-1/4"-5MM-SS, Six Beam Coupling
      FCR10-1/4"-5MM-SS
      As low as $90.40 $132.58
      Ruland FCR10-1/4"-5MM-SS, 1/4" x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    3. Ruland FCR10-1/4"-6MM-A, Six Beam Coupling
      FCR10-1/4"-6MM-A
      As low as $36.23 $53.13
      Ruland FCR10-1/4"-6MM-A, 1/4" x 6mm Six Beam Coupling, Aluminum, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    4. Ruland FCR10-1/4"-6MM-SS, Six Beam Coupling
      FCR10-1/4"-6MM-SS
      As low as $90.40 $132.58
      Ruland FCR10-1/4"-6MM-SS, 1/4" x 6mm Six Beam Coupling, Stainless Steel, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    5. Ruland FCR10-5MM-3/16"-A, Six Beam Coupling
      FCR10-5MM-3/16"-A
      As low as $36.23 $53.13
      Ruland FCR10-5MM-3/16"-A, 5mm x 3/16" Six Beam Coupling, Aluminum, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    6. Ruland FCR10-5MM-3/16"-SS, Six Beam Coupling
      FCR10-5MM-3/16"-SS
      As low as $90.40 $132.58
      Ruland FCR10-5MM-3/16"-SS, 5mm x 3/16" Six Beam Coupling, Stainless Steel, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    7. Ruland FCR10-6MM-3/16"-A, Six Beam Coupling
      FCR10-6MM-3/16"-A
      As low as $36.23 $53.13
      Ruland FCR10-6MM-3/16"-A, 6mm x 3/16" Six Beam Coupling, Aluminum, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    8. Ruland FCR10-6MM-3/16"-SS, Six Beam Coupling
      FCR10-6MM-3/16"-SS
      As low as $90.40 $132.58
      Ruland FCR10-6MM-3/16"-SS, 6mm x 3/16" Six Beam Coupling, Stainless Steel, Clamp Style, 0.625" (15.9mm) OD, 1.000" (25.4mm) Length
      Add to Compare
    9. Ruland FCR12-1/4"-5MM-A, Six Beam Coupling
      FCR12-1/4"-5MM-A
      As low as $37.80 $55.45
      Ruland FCR12-1/4"-5MM-A, 1/4" x 5mm Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    10. Ruland FCR12-1/4"-5MM-SS, Six Beam Coupling
      FCR12-1/4"-5MM-SS
      As low as $89.00 $130.53
      Ruland FCR12-1/4"-5MM-SS, 1/4" x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    11. Ruland FCR12-1/4"-6MM-A, Six Beam Coupling
      FCR12-1/4"-6MM-A
      As low as $37.80 $55.45
      Ruland FCR12-1/4"-6MM-A, 1/4" x 6mm Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    12. Ruland FCR12-1/4"-6MM-SS, Six Beam Coupling
      FCR12-1/4"-6MM-SS
      As low as $89.00 $130.53
      Ruland FCR12-1/4"-6MM-SS, 1/4" x 6mm Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    13. Ruland FCR12-5/16"-5MM-A, Six Beam Coupling
      FCR12-5/16"-5MM-A
      As low as $37.80 $55.45
      Ruland FCR12-5/16"-5MM-A, 5/16" x 5mm Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    14. Ruland FCR12-5/16"-5MM-SS, Six Beam Coupling
      FCR12-5/16"-5MM-SS
      As low as $89.00 $130.53
      Ruland FCR12-5/16"-5MM-SS, 5/16" x 5mm Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    15. Ruland FCR12-5/16"-6MM-A, Six Beam Coupling
      FCR12-5/16"-6MM-A
      As low as $37.80 $55.45
      Ruland FCR12-5/16"-6MM-A, 5/16" x 6mm Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    16. Ruland FCR12-5/16"-6MM-SS, Six Beam Coupling
      FCR12-5/16"-6MM-SS
      As low as $89.00 $130.53
      Ruland FCR12-5/16"-6MM-SS, 5/16" x 6mm Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    17. Ruland FCR12-5/16"-7MM-A, Six Beam Coupling
      FCR12-5/16"-7MM-A
      As low as $37.80 $55.45
      Ruland FCR12-5/16"-7MM-A, 5/16" x 7mm Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    18. Ruland FCR12-5/16"-7MM-SS, Six Beam Coupling
      FCR12-5/16"-7MM-SS
      As low as $89.00 $130.53
      Ruland FCR12-5/16"-7MM-SS, 5/16" x 7mm Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    19. Ruland FCR12-5MM-3/16"-A, Six Beam Coupling
      FCR12-5MM-3/16"-A
      As low as $37.80 $55.45
      Ruland FCR12-5MM-3/16"-A, 5mm x 3/16" Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    20. Ruland FCR12-5MM-3/16"-SS, Six Beam Coupling
      FCR12-5MM-3/16"-SS
      As low as $89.00 $130.53
      Ruland FCR12-5MM-3/16"-SS, 5mm x 3/16" Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    21. Ruland FCR12-6MM-3/16"-A, Six Beam Coupling
      FCR12-6MM-3/16"-A
      As low as $37.80 $55.45
      Ruland FCR12-6MM-3/16"-A, 6mm x 3/16" Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    22. Ruland FCR12-6MM-3/16"-SS, Six Beam Coupling
      FCR12-6MM-3/16"-SS
      As low as $89.00 $130.53
      Ruland FCR12-6MM-3/16"-SS, 6mm x 3/16" Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    23. Ruland FCR12-7MM-1/4"-A, Six Beam Coupling
      FCR12-7MM-1/4"-A
      As low as $37.80 $55.45
      Ruland FCR12-7MM-1/4"-A, 7mm x 1/4" Six Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
    24. Ruland FCR12-7MM-1/4"-SS, Six Beam Coupling
      FCR12-7MM-1/4"-SS
      As low as $89.00 $130.53
      Ruland FCR12-7MM-1/4"-SS, 7mm x 1/4" Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 1.250" (31.8mm) Length
      Add to Compare
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    Shopping Options
    Style
    1. Clamp 210 items
    2. Set Screw 210 items
    Bore (B1)
    1. 0.2500 in 20 items
    2. 0.3125 in 20 items
    3. 0.3750 in 24 items
    4. 0.5000 in 32 items
    5. 0.6250 in 24 items
    6. 0.7500 in 40 items
    7. 5 mm 8 items
    8. 6 mm 8 items
    9. 7 mm 12 items
    10. 8 mm 24 items
    11. 9 mm 12 items
    12. 10 mm 24 items
    13. 11 mm 24 items
    14. 12 mm 24 items
    15. 13 mm 20 items
    16. 14 mm 20 items
    17. 15 mm 20 items
    18. 16 mm 12 items
    19. 17 mm 12 items
    20. 18 mm 12 items
    21. 19 mm 12 items
    22. 20 mm 16 items
    Small Bore (B2)
    1. 0.1875 in 24 items
    2. 0.2500 in 32 items
    3. 0.3125 in 56 items
    4. 0.3750 in 80 items
    5. 0.5000 in 44 items
    6. 0.6250 in 20 items
    7. 0.7500 in 4 items
    8. 5 mm 12 items
    9. 6 mm 24 items
    10. 7 mm 12 items
    11. 8 mm 12 items
    12. 9 mm 12 items
    13. 10 mm 16 items
    14. 11 mm 16 items
    15. 12 mm 16 items
    16. 13 mm 8 items
    17. 14 mm 8 items
    18. 15 mm 8 items
    19. 16 mm 4 items
    20. 17 mm 4 items
    21. 18 mm 4 items
    22. 19 mm 4 items
    Material
    1. 303 Stainless Steel 210 items
    2. Aluminum 210 items
    Outer Diameter (OD)
    1. 0.625 in (15.9 mm) 16 items
    2. 0.750 in (19.1 mm) 48 items
    3. 1.000 in (25.4 mm) 84 items
    4. 1.250 in (31.8 mm) 96 items
    5. 1.500 in (38.1 mm) 176 items
    Length (L)
    1. 1.000 in (25.4 mm) 16 items
    2. 1.250 in (31.8 mm) 48 items
    3. 1.500 in (38.1 mm) 84 items
    4. 1.750 in (44.5 mm) 96 items
    5. 2.250 in (57.2 mm) 176 items
    Static Torque
    1. 13 lb-in (1.47 Nm) 4 items
    2. 13.0 lb-in (1.47 Nm) 4 items
    3. 18 lb-in (2.03 Nm) 4 items
    4. 18.1 lb-in (2.04 Nm) 4 items
    5. 20.0 lb-in (2.26 Nm) 6 items
    6. 20 lb-in (2.26 Nm) 6 items
    7. 24.0 lb-in (2.71 Nm) 4 items
    8. 25.0 lb-in (2.82 Nm) 6 items
    9. 26 lb-in (2.94 Nm) 4 items
    10. 26.0 lb-in (2.94 Nm) 4 items
    11. 29.0 lb-in (3.28 Nm) 6 items
    12. 31 lb-in (3.50 Nm) 6 items
    13. 31.1 lb-in (3.51 Nm) 10 items
    14. 33 lb-in (3.73 Nm) 12 items
    15. 33.0 lb-in (3.73 Nm) 14 items
    16. 35 lb-in (3.96 Nm) 2 items
    17. 35.0 lb-in (3.95 Nm) 2 items
    18. 38.9 lb-in (4.40 Nm) 12 items
    19. 41 lb-in (4.63 Nm) 4 items
    20. 41.1 lb-in (4.64 Nm) 4 items
    21. 43.0 lb-in (4.86 Nm) 6 items
    22. 45.0 lb-in (5.08 Nm) 12 items
    23. 50 lb-in (5.65 Nm) 22 items
    24. 50.0 lb-in (5.65 Nm) 8 items
    25. 50.1 lb-in (5.66 Nm) 14 items
    26. 53 lb-in (5.99 Nm) 2 items
    27. 53.1 lb-in (6.00 Nm) 2 items
    28. 61.0 lb-in (6.89 Nm) 6 items
    29. 61 lb-in (6.89 Nm) 4 items
    30. 70.0 lb-in (7.91 Nm) 2 items
    31. 80 lb-in (9.04 Nm) 20 items
    32. 80.0 lb-in (9.04 Nm) 12 items
    33. 84.0 lb-in (9.49 Nm) 8 items
    34. 95 lb-in (10.74 Nm) 12 items
    35. 95.0 lb-in (10.73 Nm) 16 items
    36. 100.2 lb-in (11.32 Nm) 18 items
    37. 104.0 lb-in (11.75 Nm) 8 items
    38. 107 lb-in (12.09 Nm) 10 items
    39. 110 lb-in (12.43 Nm) 6 items
    40. 110.0 lb-in (12.43 Nm) 12 items
    41. 120.0 lb-in (13.56 Nm) 2 items
    42. 129 lb-in (14.58 Nm) 4 items
    43. 129.2 lb-in (14.60 Nm) 8 items
    44. 142.3 lb-in (16.08 Nm) 8 items
    45. 145 lb-in (16.39 Nm) 20 items
    46. 145.0 lb-in (16.38 Nm) 6 items
    47. 145.3 lb-in (16.42 Nm) 6 items
    48. 175 lb-in (19.78 Nm) 12 items
    49. 175.4 lb-in (19.82 Nm) 16 items
    50. 190 lb-in (21.47 Nm) 6 items
    51. 190.5 lb-in (21.52 Nm) 12 items
    52. 208.3 lb-in (23.53 Nm) 2 items
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