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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 MWC20-1/4"-1/4"-A, Four Beam Coupling
      MWC20-1/4"-1/4"-A
      As low as $37.91 $55.60
      Ruland MWC20-1/4"-1/4"-A, 1/4" x 1/4" Four Beam Coupling, Aluminum, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    2. Ruland MWC20-1/4"-1/4"-SS, Four Beam Coupling
      MWC20-1/4"-1/4"-SS
      As low as $87.75 $128.69
      Ruland MWC20-1/4"-1/4"-SS, 1/4" x 1/4" Four Beam Coupling, Stainless Steel, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    3. Ruland MWC20-1/4"-4MM-A, Four Beam Coupling
      MWC20-1/4"-4MM-A
      As low as $37.91 $55.60
      Ruland MWC20-1/4"-4MM-A, 1/4" x 4mm Four Beam Coupling, Aluminum, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    4. Ruland MWC20-1/4"-4MM-SS, Four Beam Coupling
      MWC20-1/4"-4MM-SS
      As low as $87.75 $128.69
      Ruland MWC20-1/4"-4MM-SS, 1/4" x 4mm Four Beam Coupling, Aluminum, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    5. Ruland MWC20-1/4"-5MM-A, Four Beam Coupling
      MWC20-1/4"-5MM-A
      As low as $37.91 $55.60
      Ruland MWC20-1/4"-5MM-A, 1/4" x 5mm Four Beam Coupling, Aluminum, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    6. Ruland MWC20-1/4"-5MM-SS, Four Beam Coupling
      MWC20-1/4"-5MM-SS
      As low as $87.75 $128.69
      Ruland MWC20-1/4"-5MM-SS, 1/4" x 5mm Four Beam Coupling, Aluminum, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    7. Ruland MWC20-1/4"-6MM-A, Four Beam Coupling
      MWC20-1/4"-6MM-A
      As low as $37.91 $55.60
      Ruland MWC20-1/4"-6MM-A, 1/4" x 6mm Four Beam Coupling, Aluminum, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    8. Ruland MWC20-1/4"-6MM-SS, Four Beam Coupling
      MWC20-1/4"-6MM-SS
      As low as $87.75 $128.69
      Ruland MWC20-1/4"-6MM-SS, 1/4" x 6mm Four Beam Coupling, Aluminum, Clamp Style, 0.787" (20.0mm) OD, 1.102" (28.0mm) Length
      Add to Compare
    9. Ruland MWC25-1/4"-1/4"-A, Four Beam Coupling
      MWC25-1/4"-1/4"-A
      As low as $40.03 $58.71
      Ruland MWC25-1/4"-1/4"-A, 1/4" x 1/4" Four Beam Coupling, Aluminum, Clamp Style, 0.984" (25.0mm) OD, 1.181" (30.0mm) Length
      Add to Compare
    10. Ruland MWC25-1/4"-1/4"-SS, Four Beam Coupling
      MWC25-1/4"-1/4"-SS
      As low as $99.53 $145.97
      Ruland MWC25-1/4"-1/4"-SS, 1/4" x 1/4" Four Beam Coupling, Stainless Steel, Clamp Style, 0.984" (25.0mm) OD, 1.181" (30.0mm) Length
      Add to Compare
    11. Ruland MWC25-1/4"-6MM-A, Four Beam Coupling
      MWC25-1/4"-6MM-A
      As low as $40.03 $58.71
      Ruland MWC25-1/4"-6MM-A, 1/4" x 6mm Four Beam Coupling, Aluminum, Clamp Style, 0.984" (25.0mm) OD, 1.181" (30.0mm) Length
      Add to Compare
    12. Ruland MWC25-1/4"-6MM-SS, Four Beam Coupling
      MWC25-1/4"-6MM-SS
      As low as $99.53 $145.97
      Ruland MWC25-1/4"-6MM-SS, 1/4" x 6mm Four Beam Coupling, Stainless Steel, Clamp Style, 0.984" (25.0mm) OD, 1.181" (30.0mm) Length
      Add to Compare
    13. Ruland MWS20-1/4"-6MM-SS, Four Beam Coupling
      MWS20-1/4"-6MM-SS
      As low as $78.92 $115.75
      Ruland MWS20-1/4"-6MM-SS, 1/4" x 6mm Four Beam Coupling, Aluminum, Set Screw Style, 0.787" (20.0mm) OD, 0.787" (20.0mm) Length
      Add to Compare
    14. Ruland MWS25-1/4"-1/4"-A, Four Beam Coupling
      MWS25-1/4"-1/4"-A
      As low as $36.20 $53.09
      Ruland MWS25-1/4"-1/4"-A, 1/4" x 1/4" Four Beam Coupling, Aluminum, Set Screw Style, 0.984" (25.0mm) OD, 0.945" (24.0mm) Length
      Add to Compare
    15. Ruland MWS25-1/4"-1/4"-SS, Four Beam Coupling
      MWS25-1/4"-1/4"-SS
      As low as $89.84 $131.76
      Ruland MWS25-1/4"-1/4"-SS, 1/4" x 1/4" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.984" (25.0mm) OD, 0.945" (24.0mm) Length
      Add to Compare
    16. Ruland MWS25-1/4"-6MM-A, Four Beam Coupling
      MWS25-1/4"-6MM-A
      As low as $36.20 $53.09
      Ruland MWS25-1/4"-6MM-A, 1/4" x 6mm Four Beam Coupling, Aluminum, Set Screw Style, 0.984" (25.0mm) OD, 0.945" (24.0mm) Length
      Add to Compare
    17. Ruland MWS25-1/4"-6MM-SS, Four Beam Coupling
      MWS25-1/4"-6MM-SS
      As low as $89.84 $131.76
      Ruland MWS25-1/4"-6MM-SS, 1/4" x 6mm Four Beam Coupling, Stainless Steel, Set Screw Style, 0.984" (25.0mm) OD, 0.945" (24.0mm) Length
      Add to Compare
    18. Ruland PCR12-1/4"-3MM-A, Four Beam Coupling
      PCR12-1/4"-3MM-A
      As low as $33.27 $48.79
      Ruland PCR12-1/4"-3MM-A, 1/4" x 3mm Four Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
      Add to Compare
    19. Ruland PCR12-1/4"-3MM-SS, Four Beam Coupling
      PCR12-1/4"-3MM-SS
      As low as $83.24 $122.08
      Ruland PCR12-1/4"-3MM-SS, 1/4" x 3mm Four Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
      Add to Compare
    20. Ruland PCR12-1/4"-4MM-A, Four Beam Coupling
      PCR12-1/4"-4MM-A
      As low as $33.27 $48.79
      Ruland PCR12-1/4"-4MM-A, 1/4" x 4mm Four Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
      Add to Compare
    21. Ruland PCR12-1/4"-4MM-SS, Four Beam Coupling
      PCR12-1/4"-4MM-SS
      As low as $83.24 $122.08
      Ruland PCR12-1/4"-4MM-SS, 1/4" x 4mm Four Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
      Add to Compare
    22. Ruland PCR12-1/4"-5MM-A, Four Beam Coupling
      PCR12-1/4"-5MM-A
      As low as $33.27 $48.79
      Ruland PCR12-1/4"-5MM-A, 1/4" x 5mm Four Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
      Add to Compare
    23. Ruland PCR12-1/4"-5MM-SS, Four Beam Coupling
      PCR12-1/4"-5MM-SS
      As low as $83.24 $122.08
      Ruland PCR12-1/4"-5MM-SS, 1/4" x 5mm Four Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
      Add to Compare
    24. Ruland PCR12-1/4"-6MM-A, Four Beam Coupling
      PCR12-1/4"-6MM-A
      As low as $33.27 $48.79
      Ruland PCR12-1/4"-6MM-A, 1/4" x 6mm Four Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
      Add to Compare
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    1. Clamp 48 items
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    1. Inch 42 items
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    1. 303 Stainless Steel 45 items
    2. Aluminum 44 items
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    Static Torque
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    19. 24 lb-in (2.71 Nm) 4 items
    20. 36 lb-in (4.07 Nm) 2 items
    21. 47 lb-in (5.31 Nm) 2 items
    22. 49 lb-in (5.54 Nm) 2 items
    23. 63 lb-in (7.12 Nm) 2 items
    24. 68 lb-in (7.68 Nm) 2 items
    25. 92 lb-in (10.40 Nm) 2 items
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