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Rigid Couplings for Test, Measurement, and Inspection Applications

Rigid couplings have no flexing element and are machined from a single piece of aluminum, steel, or stainless steel for the greatest torsional stiffness and torque capabilities of any coupling Ruland offers. These performance characteristics are beneficial for designers that need high accuracy and repeatability which is common in test, measurement, and inspection systems found in food processing, material testing, and medical applications.
Ruland straight bore rigid couplings are manufactured with precision honed bores for collinearity to ensure a precise fit and greater torque transmission capability. Collinear bores prevent the coupling from introducing misalignment into systems where it would not otherwise be present allowing for reduced wear on joined components and increased system efficiency. Rigid couplings are available in set screw and one- and two-piece clamping styles in 1215 lead-free steel with a black oxide finish for the highest holding power, lightweight 2024 aluminum for low inertia, and 303 stainless steel for corrosion resistance. Bores are available in sizes from 1/8” to 2” and 3mm to 50mm. Ruland manufactures rigid couplings in our Marlborough, MA factory under strict controls using proprietary processes.

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Items 1-24 of 27

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  1. Ruland CLC-6-6-F, One-Piece Rigid Coupling
    CLC-6-6-F
    As low as $31.33 $45.95
    Ruland CLC-6-6-F, 3/8" x 3/8" Rigid Coupling, Black Oxide Steel, One-Piece Clamp Style with Keyway, 7/8" OD, 1 3/8" Length
  2. Ruland CLC-6-6-SS, One-Piece Rigid Coupling
    CLC-6-6-SS
    As low as $51.83 $76.01
    Ruland CLC-6-6-SS, 3/8" x 3/8" Rigid Coupling, 303 Stainless Steel, One-Piece Clamp Style with Keyway, 7/8" OD, 1 3/8" Length
  3. Ruland CLX-6-4-A, One-Piece Rigid Coupling
    CLX-6-4-A
    As low as $32.93 $73.19
    Ruland CLX-6-4-A, 3/8" x 1/4" Rigid Coupling, Aluminum, One-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  4. Ruland CLX-6-4-F, One-Piece Rigid Coupling
    CLX-6-4-F
    As low as $31.61 $46.37
    Ruland CLX-6-4-F, 3/8" x 1/4" Rigid Coupling, Black Oxide Steel, One-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  5. Ruland CLX-6-4-SS, One-Piece Rigid Coupling
    CLX-6-4-SS
    As low as $49.74 $72.95
    Ruland CLX-6-4-SS, 3/8" x 1/4" Rigid Coupling, 303 Stainless Steel, One-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  6. Ruland CLX-6-6-A, One-Piece Rigid Coupling
    CLX-6-6-A
    As low as $27.13 $39.78
    Ruland CLX-6-6-A, 3/8" x 3/8" Rigid Coupling, Aluminum, One-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  7. Ruland CLX-6-6-F, One-Piece Rigid Coupling
    CLX-6-6-F
    As low as $25.90 $37.98
    Ruland CLX-6-6-F, 3/8" x 3/8" Rigid Coupling, Black Oxide Steel, One-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  8. Ruland CLX-6-6-SS, One-Piece Rigid Coupling
    CLX-6-6-SS
    As low as $41.94 $61.51
    Ruland CLX-6-6-SS, 3/8" x 3/8" Rigid Coupling, 303 Stainless Steel, One-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  9. Ruland SCC-6-6-F, Set Screw Rigid Coupling
    SCC-6-6-F
    As low as $25.44 $37.32
    Ruland SCC-6-6-F, 3/8" x 3/8" Rigid Coupling, Black Oxide Steel, Set Screw Style with Keyway, 7/8" OD, 1 3/8" Length
  10. Ruland SCC-6-6-SS, Set Screw Rigid Coupling
    SCC-6-6-SS
    As low as $44.13 $64.73
    Ruland SCC-6-6-SS, 3/8" x 3/8" Rigid Coupling, 303 Stainless Steel, Set Screw Style with Keyway, 7/8" OD, 1 3/8" Length
  11. Ruland SCX-6-6-F, Set Screw Rigid Coupling
    SCX-6-6-F
    As low as $19.99 $29.32
    Ruland SCX-6-6-F, 3/8" x 3/8" Rigid Coupling, Black Oxide Steel, Set Screw Style, 7/8" OD, 1 3/8" Length
  12. Ruland SCX-6-6-SS, Set Screw Rigid Coupling
    SCX-6-6-SS
    As low as $34.49 $50.59
    Ruland SCX-6-6-SS, 3/8" x 3/8" Rigid Coupling, 303 Stainless Steel, Set Screw Style, 7/8" OD, 1 3/8" Length
  13. Ruland SPC-6-4-F, Two-Piece Rigid Coupling
    SPC-6-4-F
    As low as $88.00 $129.07
    Ruland SPC-6-4-F, 3/8" x 1/4" Rigid Coupling, Black Oxide Steel, Two-Piece Clamp Style With Keyway, 7/8" OD, 1 3/8" Length
  14. Ruland SPC-6-4-SS, Two-Piece Rigid Coupling
    SPC-6-4-SS
    As low as $129.86 $190.46
    Ruland SPC-6-4-SS, 3/8" x 1/4" Rigid Coupling, 303 Stainless Steel, Two-Piece Clamp Style With Keyway, 7/8" OD, 1 3/8" Length
  15. Ruland SPC-6-6-F, Two-Piece Rigid Coupling
    SPC-6-6-F
    As low as $48.87 $71.68
    Ruland SPC-6-6-F, 3/8" x 3/8" Rigid Coupling, Black Oxide Steel, Two-Piece Clamp Style With Keyway, 7/8" OD, 1 3/8" Length
  16. Ruland SPC-6-6-SS, Two-Piece Rigid Coupling
    SPC-6-6-SS
    As low as $72.93 $106.97
    Ruland SPC-6-6-SS, 3/8" x 3/8" Rigid Coupling, 303 Stainless Steel, Two-Piece Clamp Style With Keyway, 7/8" OD, 1 3/8" Length
  17. Ruland SPX-6-4-F, Two-Piece Rigid Coupling
    SPX-6-4-F
    As low as $46.93 $68.83
    Ruland SPX-6-4-F, 3/8" x 1/4" Rigid Coupling, Black Oxide Steel, Two-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  18. Ruland SPX-6-4-SS, Two-Piece Rigid Coupling
    SPX-6-4-SS
    As low as $70.77 $103.79
    Ruland SPX-6-4-SS, 3/8" x 1/4" Rigid Coupling, 303 Stainless Steel, Two-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  19. Ruland SPX-6-6-F, Two-Piece Rigid Coupling
    SPX-6-6-F
    As low as $39.69 $58.22
    Ruland SPX-6-6-F, 3/8" x 3/8" Rigid Coupling, Black Oxide Steel, Two-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  20. Ruland SPX-6-6-SS, Two-Piece Rigid Coupling
    SPX-6-6-SS
    As low as $60.90 $89.32
    Ruland SPX-6-6-SS, 3/8" x 3/8" Rigid Coupling, 303 Stainless Steel, Two-Piece Clamp Style, 7/8" OD, 1 3/8" Length
  21. /s/h/shaft-collar-wcl-f-small.jpg
    WCL-6-4-A
    As low as $18.36 $26.92
    Ruland WCL-6-4-A, 0.3750" x 0.2500" Short Rigid Coupling, Aluminum, One-Piece Clamp Style, 7/8" OD, 3/4" Length
  22. /s/h/shaft-collar-wcl-f-small.jpg
    WCL-6-4-F
    As low as $17.49 $25.65
    Ruland WCL-6-4-F, 0.3750" x 0.2500" Short Rigid Coupling, Black Oxide Steel, One-Piece Clamp Style, 7/8" OD, 3/4" Length
  23. /s/h/shaft-collar-wcl-f-small.jpg
    WCL-6-4-SS
    As low as $41.88 $61.43
    Ruland WCL-6-4-SS, 0.3750" x 0.2500" Short Rigid Coupling, 303 Stainless Steel, One-Piece Clamp Style, 7/8" OD, 3/4" Length
  24. /s/h/shaft-collar-wsp-ss-small.jpg
    WSP-6-4-F
    As low as $29.60 $43.41
    Ruland WSP-6-4-F, 0.3750" x 0.2500" Short Rigid Coupling, Black Oxide Steel, Two-Piece Clamp Style, 7/8" OD, 3/4" Length
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