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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 PCR10-2-2-SS, Four Beam Coupling
      PCR10-2-2-SS
      As low as $89.78 $131.68
      Ruland PCR10-2-2-SS, 1/8" x 1/8" Four Beam Coupling, Stainless Steel, Clamp Style, 0.625" OD, 0.800" Length
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    2. Ruland PCR14-3-3-A, Four Beam Coupling
      PCR14-3-3-A
      As low as $37.53 $55.04
      Ruland PCR14-3-3-A, 3/16" x 3/16" Four Beam Coupling, Aluminum, Clamp Style, 0.875" OD, 1.063" Length
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    3. Ruland PSR10-2-2-SS, Four Beam Coupling
      PSR10-2-2-SS
      As low as $80.07 $117.44
      Ruland PSR10-2-2-SS, 1/8" x 1/8" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.625" OD, 0.800" Length
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    4. Ruland PSR14-3-3-A, Four Beam Coupling
      PSR14-3-3-A
      As low as $33.30 $48.83
      Ruland PSR14-3-3-A, 3/16" x 3/16" Four Beam Coupling, Aluminum, Set Screw Style, 0.875" OD, 1.063" Length
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    1. Static Torque
      20 lb-in
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    Shopping Options
    Style
    1. Clamp 2 items
    2. Set Screw 2 items
    Bore (B1)
    1. 0.1250 in 2 items
    2. 0.1875 in 2 items
    Small Bore (B2)
    1. 0.1250 in 2 items
    2. 0.1875 in 2 items
    Material
    1. 303 Stainless Steel 2 items
    2. Aluminum 2 items
    Outer Diameter (OD)
    1. 0.625 in 2 items
    2. 0.875 in 2 items
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    2. 1.063 in 2 items
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