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    Beam Couplings for Encoders

    Ruland 4-beam couplings are manufactured from a single piece of aluminum or stainless steel with multiple spiral (helical) cuts allowing for a zero-backlash encoder coupling with higher accuracy and better overall misalignment capabilities than traditional single beam couplings. They are designed with extra flexibility to provide reduced bearing loads, which is critical in encoders which have small sensitive bearings. Ruland 4-beam couplings have a balanced design for reduced vibration at speeds up to 6,000 RPM. Ruland manufactures two series of 4-beam couplings, P and MW, giving designers a variety of performance and dimensional characteristics to choose from. Ruland manufactures 4-beam couplings in our Marlborough, Massachusetts factory with bore sizes ranging from 3/32” to 1/2” or 3mm to 12mm.

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    1. Ruland PCMR25-7-6-SS, Four Beam Coupling
      PCMR25-7-6-SS
      As low as $99.80 $146.37
      Ruland PCMR25-7-6-SS, 7mm x 6mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.4mm OD, 31.8mm Length
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    2. Ruland PCMR25-7-7-SS, Four Beam Coupling
      PCMR25-7-7-SS
      As low as $99.80 $146.37
      Ruland PCMR25-7-7-SS, 7mm x 7mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    3. Ruland PCMR25-8-6-SS, Four Beam Coupling
      PCMR25-8-6-SS
      As low as $99.80 $146.37
      Ruland PCMR25-8-6-SS, 8mm x 6mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    4. Ruland PCMR25-8-7-SS, Four Beam Coupling
      PCMR25-8-7-SS
      As low as $99.80 $146.37
      Ruland PCMR25-8-7-SS, 8mm x 7mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    5. Ruland PCMR25-8-8-SS, Four Beam Coupling
      PCMR25-8-8-SS
      As low as $99.80 $146.37
      Ruland PCMR25-8-8-SS, 8mm x 8mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.4mm OD, 31.8mm Length
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    6. Ruland PCMR29-7-6-A, Four Beam Coupling
      PCMR29-7-6-A
      As low as $47.49 $69.65
      Ruland PCMR29-7-6-A, 7mm x 6mm Four Beam Coupling, Aluminum, Clamp Style, 28.6mm OD, 38.1mm Length
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    7. Ruland PCMR29-7-7-A, Four Beam Coupling
      PCMR29-7-7-A
      As low as $47.49 $69.65
      Ruland PCMR29-7-7-A, 7mm x 7mm Four Beam Coupling, Aluminum, Clamp Style, 28.6mm OD, 38.1mm Length
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    8. Ruland PCMR29-8-6-A, Four Beam Coupling
      PCMR29-8-6-A
      As low as $47.49 $69.65
      Ruland PCMR29-8-6-A, 8mm x 6mm Four Beam Coupling, Aluminum, Clamp Style, 28.6mm OD, 38.1mm Length
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    9. Ruland PCMR29-8-7-A, Four Beam Coupling
      PCMR29-8-7-A
      As low as $47.49 $69.65
      Ruland PCMR29-8-7-A, 8mm x 7mm Four Beam Coupling, Aluminum, Clamp Style, 28.6mm OD, 38.1mm Length
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    10. Ruland PCMR29-8-8-A, Four Beam Coupling
      PCMR29-8-8-A
      As low as $47.49 $69.65
      Ruland PCMR29-8-8-A, 8mm x 8mm Four Beam Coupling, Aluminum, Clamp Style, 28.6mm OD, 38.1mm Length
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    11. Ruland PCR10-2.5-2-A, Four Beam Coupling
      PCR10-2.5-2-A
      As low as $32.53 $47.70
      Ruland PCR10-2.5-2-A, 5/32" x 1/8" Four Beam Coupling, Aluminum, Clamp Style, 0.625" OD, 0.800" Length
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    12. Ruland PCR10-2.5-2.5-A, Four Beam Coupling
      PCR10-2.5-2.5-A
      As low as $32.53 $47.70
      Ruland PCR10-2.5-2.5-A, 5/32" x 5/32" Four Beam Coupling, Aluminum, Clamp Style, 0.625" OD, 0.800" Length
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    13. Ruland PCR10-3-2-A, Four Beam Coupling
      PCR10-3-2-A
      As low as $32.53 $47.70
      Ruland PCR10-3-2-A, 3/16" x 1/8" Four Beam Coupling, Aluminum, Clamp Style, 0.625" OD, 0.800" Length
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    14. Ruland PCR10-3-2.5-A, Four Beam Coupling
      PCR10-3-2.5-A
      As low as $32.53 $47.70
      Ruland PCR10-3-2.5-A, 3/16" x 5/32" Four Beam Coupling, Aluminum, Clamp Style, 0.625" OD, 0.800" Length
      Add to Compare
    15. Ruland PCR10-3-3-A, Four Beam Coupling
      PCR10-3-3-A
      As low as $32.53 $47.70
      Ruland PCR10-3-3-A, 3/16" x 3/16" Four Beam Coupling, Aluminum, Clamp Style, 0.625" OD, 0.800" Length
      Add to Compare
    16. Ruland PSMR25-7-6-SS, Four Beam Coupling
      PSMR25-7-6-SS
      As low as $89.84 $131.76
      Ruland PSMR25-7-6-SS, 7mm x 6mm Four Beam Coupling, Stainless Steel, Set Screw Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    17. Ruland PSMR25-7-7-SS, Four Beam Coupling
      PSMR25-7-7-SS
      As low as $89.84 $131.76
      Ruland PSMR25-7-7-SS, 7mm x 7mm Four Beam Coupling, Stainless Steel, Set Screw Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    18. Ruland PSMR25-8-6-SS, Four Beam Coupling
      PSMR25-8-6-SS
      As low as $89.84 $131.76
      Ruland PSMR25-8-6-SS, 8mm x 6mm Four Beam Coupling, Stainless Steel, Set Screw Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    19. Ruland PSMR25-8-7-SS, Four Beam Coupling
      PSMR25-8-7-SS
      As low as $89.84 $131.76
      Ruland PSMR25-8-7-SS, 8mm x 7mm Four Beam Coupling, Stainless Steel, Set Screw Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    20. Ruland PSMR25-8-8-SS, Four Beam Coupling
      PSMR25-8-8-SS
      As low as $89.84 $131.76
      Ruland PSMR25-8-8-SS, 8mm x 8mm Four Beam Coupling, Stainless Steel, Set Screw Style, 25.4mm OD, 31.8mm Length
      Add to Compare
    21. Ruland PSMR29-7-6-A, Four Beam Coupling
      PSMR29-7-6-A
      As low as $41.35 $60.64
      Ruland PSMR29-7-6-A, 7mm x 6mm Four Beam Coupling, Aluminum, Set Screw Style, 28.6mm OD, 38.1mm Length
      Add to Compare
    22. Ruland PSMR29-7-7-A, Four Beam Coupling
      PSMR29-7-7-A
      As low as $41.35 $60.64
      Ruland PSMR29-7-7-A, 7mm x 7mm Four Beam Coupling, Aluminum, Set Screw Style, 28.6mm OD, 38.1mm Length
      Add to Compare
    23. Ruland PSMR29-8-6-A, Four Beam Coupling
      PSMR29-8-6-A
      As low as $41.35 $60.64
      Ruland PSMR29-8-6-A, 8mm x 6mm Four Beam Coupling, Aluminum, Set Screw Style, 28.6mm OD, 38.1mm Length
      Add to Compare
    24. Ruland PSMR29-8-7-A, Four Beam Coupling
      PSMR29-8-7-A
      As low as $41.35 $60.64
      Ruland PSMR29-8-7-A, 8mm x 7mm Four Beam Coupling, Aluminum, Set Screw Style, 28.6mm OD, 38.1mm Length
      Add to Compare
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