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    Beam Couplings for Robotic Systems

    Ruland beam couplings are manufactured from a single piece of aluminum or stainless steel with a multiple beam, or spiral, design that allows for greater torque, torsional stiffness, and misalignment accommodation compared to commodity style single beam couplings. Medical and surgical robots with frequent stops, starts, and reverses often prioritize light components and responsiveness and have low to moderate torque requirements, making beam couplings a good choice.
    Ruland’s 4-beam style couplings have two sets of two beams allowing for increased flexibility and a more compact size compared to 6-beam couplings. This style is often used in encoders or other positioning sensors found connected to servo motors in robotic systems. The 6-beam style has two sets of three beams for higher torque and torsional stiffness capabilities. Designers frequently use 6-beam couplings in robotic vision systems for their dampening capabilities.

    Ruland beam couplings are zero-backlash, accurate, and can accommodate all forms of misalignment making them ideal for a variety of applications. Designers prefer aluminum beam couplings for their cost effectiveness and low inertia. Stainless steel beam couplings are capable of handling higher torque than aluminum beam couplings, but their increased mass leads to significantly greater inertia. Ruland beam couplings are available with clamp or set screw attachments in bore sizes from 3/32” to ¾” and 3mm to 20mm.

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    1. Ruland FCMR19-8-5-A, Six Beam Coupling
      FCMR19-8-5-A
      As low as $37.80 $55.45
      Ruland FCMR19-8-5-A, 8mm x 5mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
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    2. Ruland FCMR19-8-6-A, Six Beam Coupling
      FCMR19-8-6-A
      As low as $37.80 $55.45
      Ruland FCMR19-8-6-A, 8mm x 6mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
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    3. Ruland FCMR19-8-7-A, Six Beam Coupling
      FCMR19-8-7-A
      As low as $37.80 $55.45
      Ruland FCMR19-8-7-A, 8mm x 7mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
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    4. Ruland FCMR19-8-8-A, Six Beam Coupling
      FCMR19-8-8-A
      As low as $37.80 $55.45
      Ruland FCMR19-8-8-A, 8mm x 8mm Six Beam Coupling, Aluminum, Clamp Style, 19.1mm OD, 31.8mm Length
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    5. 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
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    6. 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
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    7. 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
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    8. Ruland FSMR19-8-8-A, Six Beam Coupling
      FSMR19-8-8-A
      As low as $31.66 $46.44
      Ruland FSMR19-8-8-A, 8mm x 8mm Six Beam Coupling, Aluminum, Set Screw Style, 19.1mm OD, 31.8mm Length
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    9. Ruland PCMR16-3-3-SS, Four Beam Coupling
      PCMR16-3-3-SS
      As low as $89.78 $131.68
      Ruland PCMR16-3-3-SS, 3mm x 3mm Four Beam Coupling, Stainless Steel, Clamp Style, 15.9mm OD, 20.3mm Length
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    10. Ruland PCMR22-5-5-A, Four Beam Coupling
      PCMR22-5-5-A
      As low as $37.53 $55.04
      Ruland PCMR22-5-5-A, 5mm x 5mm Four Beam Coupling, Aluminum, Clamp Style, 22.2mm OD, 27.0mm Length
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    11. Ruland PSMR16-3-3-SS, Four Beam Coupling
      PSMR16-3-3-SS
      As low as $80.07 $117.44
      Ruland PSMR16-3-3-SS, 3mm x 3mm Four Beam Coupling, Stainless Steel, Set Screw Style, 15.9mm OD, 20.3mm Length
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    12. Ruland PSMR22-5-5-A, Four Beam Coupling
      PSMR22-5-5-A
      As low as $33.30 $48.83
      Ruland PSMR22-5-5-A, 5mm x 5mm Four Beam Coupling, Aluminum, Set Screw Style, 22.2mm OD, 27.0mm Length
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    Style
    1. Clamp 6 items
    2. Set Screw 6 items
    Bore (B1)
    1. 3 mm 2 items
    2. 5 mm 2 items
    3. 8 mm 8 items
    Small Bore (B2)
    1. 3 mm 2 items
    2. 5 mm 4 items
    3. 6 mm 2 items
    4. 7 mm 2 items
    5. 8 mm 2 items
    Material
    1. 303 Stainless Steel 2 items
    2. Aluminum 10 items
    Outer Diameter (OD)
    1. 15.9 mm 2 items
    2. 19.1 mm 8 items
    3. 22.2 mm 2 items
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    2. 27.0 mm 2 items
    3. 31.8 mm 8 items
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