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    F-Series Six Beam Couplings

    F-Series six beam couplings are ideal for light duty power transmission applications such as coupling a servo motor to a lead screw in a motion control system. These flexible couplings feature larger body size and stronger beams to provide high torque capacity and low windup, while not sacrificing misalignment capabilities. The demanding nature of reversing servo applications make the performance benefits delivered by the F-series beam coupling vital to maintaining the accuracy, repeatability and reliability of the system. F-series helical couplings with socket head cap screws include Ruland's exclusive Nypatch® coating. This coating reduces vibration which can cause threads to loosen, and reduces galling of the screw threads in stainless steel shaft couplings. Ruland manufactures F-series beam couplings from 7075 aluminum for lightweight and low inertia and 303 stainless steel for increased torque capabilities.

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    1. Ruland FSMR16-5-5-A, Six Beam Coupling
      FSMR16-5-5-A
      As low as $33.50 $49.13
      Ruland FSMR16-5-5-A, 5mm x 5mm Six Beam Coupling, Aluminum, Set Screw Style, 15.9mm OD, 25.4mm Length
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    2. Ruland FSMR16-5-5-SS, Six Beam Coupling
      FSMR16-5-5-SS
      As low as $83.82 $122.93
      Ruland FSMR16-5-5-SS, 5mm x 5mm Six Beam Coupling, Stainless Steel, Set Screw Style, 15.9mm OD, 25.4mm Length
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    3. Ruland FSMR16-6-5-A, Six Beam Coupling
      FSMR16-6-5-A
      As low as $33.50 $49.13
      Ruland FSMR16-6-5-A, 6mm x 5mm Six Beam Coupling, Aluminum, Set Screw Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    4. Ruland FSMR16-6-5-SS, Six Beam Coupling
      FSMR16-6-5-SS
      As low as $83.82 $122.93
      Ruland FSMR16-6-5-SS, 6mm x 5mm Six Beam Coupling, Stainless Steel, Set Screw Style, 15.9mm OD, 25.4mm Length
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    5. Ruland FSMR16-6-6-A, Six Beam Coupling
      FSMR16-6-6-A
      As low as $33.50 $49.13
      Ruland FSMR16-6-6-A, 6mm x 6mm Six Beam Coupling, Aluminum, Set Screw Style, 15.9mm OD, 25.4mm Length
      Add to Compare
    6. Ruland FSMR16-6-6-SS, Six Beam Coupling
      FSMR16-6-6-SS
      As low as $83.82 $122.93
      Ruland FSMR16-6-6-SS, 6mm x 6mm Six Beam Coupling, Stainless Steel, Set Screw Style, 15.9mm OD, 25.4mm Length
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    7. Ruland FSMR19-5-5-A, Six Beam Coupling
      FSMR19-5-5-A
      As low as $31.66 $46.44
      Ruland FSMR19-5-5-A, 5mm x 5mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    8. Ruland FSMR19-5-5-SS, Six Beam Coupling
      FSMR19-5-5-SS
      As low as $82.52 $121.03
      Ruland FSMR19-5-5-SS, 5mm x 5mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    9. Ruland FSMR19-6-5-A, Six Beam Coupling
      FSMR19-6-5-A
      As low as $31.66 $46.44
      Ruland FSMR19-6-5-A, 6mm x 5mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    10. Ruland FSMR19-6-5-SS, Six Beam Coupling
      FSMR19-6-5-SS
      As low as $82.52 $121.03
      Ruland FSMR19-6-5-SS, 6mm x 5mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    11. Ruland FSMR19-6-6-A, Six Beam Coupling
      FSMR19-6-6-A
      As low as $31.66 $46.44
      Ruland FSMR19-6-6-A, 6mm x 6mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    12. Ruland FSMR19-6-6-SS, Six Beam Coupling
      FSMR19-6-6-SS
      As low as $82.52 $121.03
      Ruland FSMR19-6-6-SS, 6mm x 6mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    13. Ruland FSMR19-7-5-A, Six Beam Coupling
      FSMR19-7-5-A
      As low as $31.66 $46.44
      Ruland FSMR19-7-5-A, 7mm x 5mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    14. Ruland FSMR19-7-5-SS, Six Beam Coupling
      FSMR19-7-5-SS
      As low as $82.52 $121.03
      Ruland FSMR19-7-5-SS, 7mm x 5mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    15. Ruland FSMR19-7-6-A, Six Beam Coupling
      FSMR19-7-6-A
      As low as $31.66 $46.44
      Ruland FSMR19-7-6-A, 7mm x 6mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    16. Ruland FSMR19-7-6-SS, Six Beam Coupling
      FSMR19-7-6-SS
      As low as $82.52 $121.03
      Ruland FSMR19-7-6-SS, 7mm x 6mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    17. Ruland FSMR19-7-7-A, Six Beam Coupling
      FSMR19-7-7-A
      As low as $31.66 $46.44
      Ruland FSMR19-7-7-A, 7mm x 7mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    18. Ruland FSMR19-7-7-SS, Six Beam Coupling
      FSMR19-7-7-SS
      As low as $82.52 $121.03
      Ruland FSMR19-7-7-SS, 7mm x 7mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    19. Ruland FSMR19-8-5-A, Six Beam Coupling
      FSMR19-8-5-A
      As low as $31.66 $46.44
      Ruland FSMR19-8-5-A, 8mm x 5mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    20. Ruland FSMR19-8-5-SS, Six Beam Coupling
      FSMR19-8-5-SS
      As low as $82.52 $121.03
      Ruland FSMR19-8-5-SS, 8mm x 5mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    21. Ruland FSMR19-8-6-A, Six Beam Coupling
      FSMR19-8-6-A
      As low as $31.66 $46.44
      Ruland FSMR19-8-6-A, 8mm x 6mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    22. Ruland FSMR19-8-6-SS, Six Beam Coupling
      FSMR19-8-6-SS
      As low as $82.52 $121.03
      Ruland FSMR19-8-6-SS, 8mm x 6mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    23. Ruland FSMR19-8-7-A, Six Beam Coupling
      FSMR19-8-7-A
      As low as $31.66 $46.44
      Ruland FSMR19-8-7-A, 8mm x 7mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
    24. Ruland FSMR19-8-7-SS, Six Beam Coupling
      FSMR19-8-7-SS
      As low as $82.52 $121.03
      Ruland FSMR19-8-7-SS, 8mm x 7mm Six Beam Coupling, Stainless Steel, Set Screw Style, 19.1mm OD, 31.8mm Length
      Add to Compare
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    1. Clamp 558 items
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    Bore (B1)
    1. 0.1875 in 4 items
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    1. 0.1875 in 22 items
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    8. 5 mm 18 items
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    22. 19 mm 6 items
    23. 20 mm 2 items
    Material
    1. 303 Stainless Steel 278 items
    2. Aluminum 278 items
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    6. 0.625 in (15.9 mm) 8 items
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    10. 1.500 in (38.1 mm) 88 items
    11. 15.9 mm 6 items
    12. 19.1 mm 20 items
    13. 25.4 mm 56 items
    14. 31.8 mm 72 items
    15. 38.1 mm 130 items
    Length (L)
    1. 1.000 in 6 items
    2. 1.250 in 12 items
    3. 1.500 in 12 items
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    5. 2.250 in 20 items
    6. 1.000 in (25.4 mm) 8 items
    7. 1.250 in (31.8 mm) 24 items
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    10. 2.250 in (57.2 mm) 88 items
    11. 25.4 mm 6 items
    12. 31.8 mm 20 items
    13. 38.1 mm 56 items
    14. 44.5 mm 72 items
    15. 57.2 mm 130 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
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    9. 3.73 Nm 12 items
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    11. 4.40 Nm 13 items
    12. 4.64 Nm 3 items
    13. 4.86 Nm 8 items
    14. 5.08 Nm 13 items
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    16. 5.66 Nm 12 items
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    21. 9.49 Nm 11 items
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    24. 11.75 Nm 11 items
    25. 12.43 Nm 13 items
    26. 13.56 Nm 1 item
    27. 14.60 Nm 9 items
    28. 16.08 Nm 6 items
    29. 16.38 Nm 17 items
    30. 16.42 Nm 10 items
    31. 19.82 Nm 13 items
    32. 21.52 Nm 13 items
    33. 23.53 Nm 1 item
    34. 13 lb-in 3 items
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    56. 208 lb-in 1 item
    57. 13 lb-in (1.47 Nm) 2 items
    58. 13.0 lb-in (1.47 Nm) 2 items
    59. 18 lb-in (2.03 Nm) 2 items
    60. 18.1 lb-in (2.04 Nm) 2 items
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    67. 29.0 lb-in (3.28 Nm) 3 items
    68. 31 lb-in (3.50 Nm) 3 items
    69. 31.1 lb-in (3.51 Nm) 5 items
    70. 33 lb-in (3.73 Nm) 6 items
    71. 33.0 lb-in (3.73 Nm) 7 items
    72. 35 lb-in (3.96 Nm) 1 item
    73. 35.0 lb-in (3.95 Nm) 1 item
    74. 38.9 lb-in (4.40 Nm) 6 items
    75. 41 lb-in (4.63 Nm) 2 items
    76. 41.1 lb-in (4.64 Nm) 2 items
    77. 43.0 lb-in (4.86 Nm) 3 items
    78. 45.0 lb-in (5.08 Nm) 6 items
    79. 50 lb-in (5.65 Nm) 11 items
    80. 50.0 lb-in (5.65 Nm) 4 items
    81. 50.1 lb-in (5.66 Nm) 7 items
    82. 53 lb-in (5.99 Nm) 1 item
    83. 53.1 lb-in (6.00 Nm) 1 item
    84. 61.0 lb-in (6.89 Nm) 3 items
    85. 61 lb-in (6.89 Nm) 2 items
    86. 70.0 lb-in (7.91 Nm) 1 item
    87. 80 lb-in (9.04 Nm) 10 items
    88. 80.0 lb-in (9.04 Nm) 6 items
    89. 84.0 lb-in (9.49 Nm) 4 items
    90. 95 lb-in (10.74 Nm) 6 items
    91. 95.0 lb-in (10.73 Nm) 8 items
    92. 100.2 lb-in (11.32 Nm) 9 items
    93. 104.0 lb-in (11.75 Nm) 4 items
    94. 107 lb-in (12.09 Nm) 5 items
    95. 110 lb-in (12.43 Nm) 3 items
    96. 110.0 lb-in (12.43 Nm) 6 items
    97. 120.0 lb-in (13.56 Nm) 1 item
    98. 129 lb-in (14.58 Nm) 2 items
    99. 129.2 lb-in (14.60 Nm) 4 items
    100. 142.3 lb-in (16.08 Nm) 4 items
    101. 145 lb-in (16.39 Nm) 10 items
    102. 145.0 lb-in (16.38 Nm) 3 items
    103. 145.3 lb-in (16.42 Nm) 3 items
    104. 175 lb-in (19.78 Nm) 6 items
    105. 175.4 lb-in (19.82 Nm) 8 items
    106. 190 lb-in (21.47 Nm) 3 items
    107. 190.5 lb-in (21.52 Nm) 6 items
    108. 208.3 lb-in (23.53 Nm) 1 item
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