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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 PCR20-1/2"-10MM-A, Four Beam Coupling
      PCR20-1/2"-10MM-A
      As low as $58.15 $85.29
      Ruland PCR20-1/2"-10MM-A, 1/2" x 10mm Four Beam Coupling, Aluminum, Clamp Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    2. Ruland PCR20-1/2"-11MM-A, Four Beam Coupling
      PCR20-1/2"-11MM-A
      As low as $58.15 $85.29
      Ruland PCR20-1/2"-11MM-A, 1/2" x 11mm Four Beam Coupling, Aluminum, Clamp Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    3. Ruland PCR20-1/2"-12MM-A, Four Beam Coupling
      PCR20-1/2"-12MM-A
      As low as $58.15 $85.29
      Ruland PCR20-1/2"-12MM-A, 1/2" x 12mm Four Beam Coupling, Aluminum, Clamp Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    4. Ruland PCR20-1/2"-6MM-A, Four Beam Coupling
      PCR20-1/2"-6MM-A
      As low as $58.15 $85.29
      Ruland PCR20-1/2"-6MM-A, 1/2" x 6mm Four Beam Coupling, Aluminum, Clamp Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    5. Ruland PCR20-1/2"-7MM-A, Four Beam Coupling
      PCR20-1/2"-7MM-A
      As low as $58.15 $85.29
      Ruland PCR20-1/2"-7MM-A, 1/2" x 7mm Four Beam Coupling, Aluminum, Clamp Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    6. Ruland PCR20-1/2"-8MM-A, Four Beam Coupling
      PCR20-1/2"-8MM-A
      As low as $58.15 $85.29
      Ruland PCR20-1/2"-8MM-A, 1/2" x 8mm Four Beam Coupling, Aluminum, Clamp Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    7. Ruland PCR20-1/2"-9MM-A, Four Beam Coupling
      PCR20-1/2"-9MM-A
      As low as $58.15 $85.29
      Ruland PCR20-1/2"-9MM-A, 1/2" x 9mm Four Beam Coupling, Aluminum, Clamp Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    8. Ruland PSR20-1/2"-10MM-A, Four Beam Coupling
      PSR20-1/2"-10MM-A
      As low as $50.14 $73.54
      Ruland PSR20-1/2"-10MM-A, 1/2" x 10mm Four Beam Coupling, Aluminum, Set Screw Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    9. Ruland PSR20-1/2"-11MM-A, Four Beam Coupling
      PSR20-1/2"-11MM-A
      As low as $50.14 $73.54
      Ruland PSR20-1/2"-11MM-A, 1/2" x 11mm Four Beam Coupling, Aluminum, Set Screw Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    10. Ruland PSR20-1/2"-12MM-A, Four Beam Coupling
      PSR20-1/2"-12MM-A
      As low as $50.14 $73.54
      Ruland PSR20-1/2"-12MM-A, 1/2" x 12mm Four Beam Coupling, Aluminum, Set Screw Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    11. Ruland PSR20-1/2"-6MM-A, Four Beam Coupling
      PSR20-1/2"-6MM-A
      As low as $50.14 $73.54
      Ruland PSR20-1/2"-6MM-A, 1/2" x 6mm Four Beam Coupling, Aluminum, Set Screw Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    12. Ruland PSR20-1/2"-7MM-A, Four Beam Coupling
      PSR20-1/2"-7MM-A
      As low as $50.14 $73.54
      Ruland PSR20-1/2"-7MM-A, 1/2" x 7mm Four Beam Coupling, Aluminum, Set Screw Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    13. Ruland PSR20-1/2"-8MM-A, Four Beam Coupling
      PSR20-1/2"-8MM-A
      As low as $50.14 $73.54
      Ruland PSR20-1/2"-8MM-A, 1/2" x 8mm Four Beam Coupling, Aluminum, Set Screw Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
    14. Ruland PSR20-1/2"-9MM-A, Four Beam Coupling
      PSR20-1/2"-9MM-A
      As low as $50.14 $73.54
      Ruland PSR20-1/2"-9MM-A, 1/2" x 9mm Four Beam Coupling, Aluminum, Set Screw Style, 1.250" (31.8mm) OD, 1.500" (38.1mm) Length
      Add to Compare
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