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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 PCR18-8-4-A, Four Beam Coupling
      PCR18-8-4-A
      As low as $47.49 $69.65
      Ruland PCR18-8-4-A, 1/2" x 1/4" Four Beam Coupling, Aluminum, Clamp Style, 1.125" OD, 1.500" Length
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    2. Ruland PCR18-8-5-A, Four Beam Coupling
      PCR18-8-5-A
      As low as $47.49 $69.65
      Ruland PCR18-8-5-A, 1/2" x 5/16" Four Beam Coupling, Aluminum, Clamp Style, 1.125" OD, 1.500" Length
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    3. Ruland PCR18-8-6-A, Four Beam Coupling
      PCR18-8-6-A
      As low as $47.49 $69.65
      Ruland PCR18-8-6-A, 1/2" x 3/8" Four Beam Coupling, Aluminum, Clamp Style, 1.125" OD, 1.500" Length
      Add to Compare
    4. Ruland PCR18-8-8-A, Four Beam Coupling
      PCR18-8-8-A
      As low as $47.49 $69.65
      Ruland PCR18-8-8-A, 1/2" x 1/2" Four Beam Coupling, Aluminum, Clamp Style, 1.125" OD, 1.500" Length
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    5. Ruland PSR18-8-4-A, Four Beam Coupling
      PSR18-8-4-A
      As low as $41.35 $60.64
      Ruland PSR18-8-4-A, 1/2" x 1/4" Four Beam Coupling, Aluminum, Set Screw Style, 1.125" OD, 1.500" Length
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    6. Ruland PSR18-8-5-A, Four Beam Coupling
      PSR18-8-5-A
      As low as $41.35 $60.64
      Ruland PSR18-8-5-A, 1/2" x 5/16" Four Beam Coupling, Aluminum, Set Screw Style, 1.125" OD, 1.500" Length
      Add to Compare
    7. Ruland PSR18-8-6-A, Four Beam Coupling
      PSR18-8-6-A
      As low as $41.35 $60.64
      Ruland PSR18-8-6-A, 1/2" x 3/8" Four Beam Coupling, Aluminum, Set Screw Style, 1.125" OD, 1.500" Length
      Add to Compare
    8. Ruland PSR18-8-8-A, Four Beam Coupling
      PSR18-8-8-A
      As low as $41.35 $60.64
      Ruland PSR18-8-8-A, 1/2" x 1/2" Four Beam Coupling, Aluminum, Set Screw Style, 1.125" OD, 1.500" Length
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    1. 0.2500 in 2 items
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    3. 0.3750 in 2 items
    4. 0.5000 in 2 items
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