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    Single Disc Couplings

    Ruland single disc couplings are comprised of two anodized aluminum hubs and one set of stainless steel disc springs. This design allows them to be used in confined spaces where other styles of coupling may not be able to fit. The single set of disc springs does not allow for any parallel misalignment. Ruland disc couplings are zero-backlash and have a balanced design for reduced vibration at speeds up to 10,000 RPM. They are a simple assembly with few moving parts, reducing the risk of backlash and premature failure. Clamp and set screw hubs are available in bore sizes from 1/8” to 1-1/4” and 3mm to 32mm.

    Features

    • High torque
    • Balanced design for high RPM
    • Low Inertia
    • No maintenance
    • High torsional stiffness
    • Constant velocity
    • Long life
    • Zero backlash
    • RoHS3 and REACH Compliant
    • Maximum speed: 10,000 RPM
    • Temperature Range: -10°F to 200°F
    Line DrawingLine Drawing

    How to Specify

    Part numbers are in the following format with numbers representing sixteenths of an inch or millimeters:

    Part Number Identification

    Products

    View as Grid Table

    Items 1225-1248 of 1309

    Set Descending Direction
    1. Ruland MDCSK51-25-17-A, Single Disc Coupling
      MDCSK51-25-17-A
      As low as $119.93 $175.89
      Ruland MDCSK51-25-17-A, 25mm x 17mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 46.1mm Length
      Add to Compare
    2. Ruland MDCSK51-25-18-A, Single Disc Coupling
      MDCSK51-25-18-A
      As low as $119.93 $175.89
      Ruland MDCSK51-25-18-A, 25mm x 18mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 46.1mm Length
      Add to Compare
    3. Ruland MDCSK51-25-19-A, Single Disc Coupling
      MDCSK51-25-19-A
      As low as $119.93 $175.89
      Ruland MDCSK51-25-19-A, 25mm x 19mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 46.1mm Length
      Add to Compare
    4. Ruland MDCSK51-25-20-A, Single Disc Coupling
      MDCSK51-25-20-A
      As low as $119.93 $175.89
      Ruland MDCSK51-25-20-A, 25mm x 20mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 46.1mm Length
      Add to Compare
    5. Ruland MDCSK51-25-22-A, Single Disc Coupling
      MDCSK51-25-22-A
      As low as $119.93 $175.89
      Ruland MDCSK51-25-22-A, 25mm x 22mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 46.1mm Length
      Add to Compare
    6. Ruland MDCSK51-25-24-A, Single Disc Coupling
      MDCSK51-25-24-A
      As low as $119.93 $175.89
      Ruland MDCSK51-25-24-A, 25mm x 24mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 46.1mm Length
      Add to Compare
    7. Ruland MDCSK51-25-25-A, Single Disc Coupling
      MDCSK51-25-25-A
      As low as $119.93 $175.89
      Ruland MDCSK51-25-25-A, 25mm x 25mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 46.1mm Length
      Add to Compare
    8. Ruland MDCSK57-14-14-A, Single Disc Coupling
      MDCSK57-14-14-A
      As low as $158.36 $232.25
      Ruland MDCSK57-14-14-A, 14mm x 14mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    9. Ruland MDCSK57-15-14-A, Single Disc Coupling
      MDCSK57-15-14-A
      As low as $158.36 $232.25
      Ruland MDCSK57-15-14-A, 15mm x 14mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    10. Ruland MDCSK57-15-15-A, Single Disc Coupling
      MDCSK57-15-15-A
      As low as $158.36 $232.25
      Ruland MDCSK57-15-15-A, 15mm x 15mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    11. Ruland MDCSK57-16-14-A, Single Disc Coupling
      MDCSK57-16-14-A
      As low as $158.36 $232.25
      Ruland MDCSK57-16-14-A, 16mm x 14mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    12. Ruland MDCSK57-16-15-A, Single Disc Coupling
      MDCSK57-16-15-A
      As low as $158.36 $232.25
      Ruland MDCSK57-16-15-A, 16mm x 15mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    13. Ruland MDCSK57-16-16-A, Single Disc Coupling
      MDCSK57-16-16-A
      As low as $158.36 $232.25
      Ruland MDCSK57-16-16-A, 16mm x 16mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    14. Ruland MDCSK57-17-14-A, Single Disc Coupling
      MDCSK57-17-14-A
      As low as $158.36 $232.25
      Ruland MDCSK57-17-14-A, 17mm x 14mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    15. Ruland MDCSK57-17-15-A, Single Disc Coupling
      MDCSK57-17-15-A
      As low as $158.36 $232.25
      Ruland MDCSK57-17-15-A, 17mm x 15mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    16. Ruland MDCSK57-17-16-A, Single Disc Coupling
      MDCSK57-17-16-A
      As low as $158.36 $232.25
      Ruland MDCSK57-17-16-A, 17mm x 16mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    17. Ruland MDCSK57-17-17-A, Single Disc Coupling
      MDCSK57-17-17-A
      As low as $158.36 $232.25
      Ruland MDCSK57-17-17-A, 17mm x 17mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    18. Ruland MDCSK57-18-14-A, Single Disc Coupling
      MDCSK57-18-14-A
      As low as $158.36 $232.25
      Ruland MDCSK57-18-14-A, 18mm x 14mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    19. Ruland MDCSK57-18-15-A, Single Disc Coupling
      MDCSK57-18-15-A
      As low as $158.36 $232.25
      Ruland MDCSK57-18-15-A, 18mm x 15mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    20. Ruland MDCSK57-18-16-A, Single Disc Coupling
      MDCSK57-18-16-A
      As low as $158.36 $232.25
      Ruland MDCSK57-18-16-A, 18mm x 16mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    21. Ruland MDCSK57-18-17-A, Single Disc Coupling
      MDCSK57-18-17-A
      As low as $158.36 $232.25
      Ruland MDCSK57-18-17-A, 18mm x 17mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    22. Ruland MDCSK57-18-18-A, Single Disc Coupling
      MDCSK57-18-18-A
      As low as $158.36 $232.25
      Ruland MDCSK57-18-18-A, 18mm x 18mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    23. Ruland MDCSK57-19-14-A, Single Disc Coupling
      MDCSK57-19-14-A
      As low as $158.36 $232.25
      Ruland MDCSK57-19-14-A, 19mm x 14mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
    24. Ruland MDCSK57-19-15-A, Single Disc Coupling
      MDCSK57-19-15-A
      As low as $158.36 $232.25
      Ruland MDCSK57-19-15-A, 19mm x 15mm Single Disc Coupling, Aluminum, Clamp Style With Keyway, 57.2mm OD, 58.8mm Length
      Add to Compare
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    Bore Type
    Unit of Measurement
    1. Inch 154 items
    2. Inch/Metric 534 items
    3. Metric 621 items
    Bore (B1)
    1. 0.1250 in 2 items
    2. 0.1875 in 6 items
    3. 0.2500 in 14 items
    4. 0.3125 in 12 items
    5. 0.3750 in 24 items
    6. 0.5000 in 54 items
    7. 0.6250 in 62 items
    8. 0.7500 in 68 items
    9. 0.8750 in 52 items
    10. 1.0000 in 64 items
    11. 1.1250 in 34 items
    12. 1.2500 in 38 items
    13. 3 mm 1 item
    14. 4 mm 4 items
    15. 5 mm 8 items
    16. 6 mm 11 items
    17. 7 mm 11 items
    18. 8 mm 22 items
    19. 9 mm 16 items
    20. 10 mm 30 items
    21. 11 mm 36 items
    22. 12 mm 44 items
    23. 13 mm 32 items
    24. 14 mm 46 items
    25. 15 mm 54 items
    26. 16 mm 70 items
    27. 17 mm 50 items
    28. 18 mm 56 items
    29. 19 mm 62 items
    30. 20 mm 74 items
    31. 22 mm 48 items
    32. 24 mm 56 items
    33. 25 mm 60 items
    34. 28 mm 32 items
    35. 30 mm 36 items
    36. 32 mm 20 items
    Small Bore (B2)
    1. 0.1250 in 6 items
    2. 0.1875 in 11 items
    3. 0.2500 in 22 items
    4. 0.3125 in 42 items
    5. 0.3750 in 60 items
    6. 0.5000 in 107 items
    7. 0.6250 in 75 items
    8. 0.7500 in 41 items
    9. 0.8750 in 25 items
    10. 1.0000 in 13 items
    11. 1.1250 in 7 items
    12. 1.2500 in 3 items
    13. 3 mm 7 items
    14. 4 mm 13 items
    15. 5 mm 9 items
    16. 6 mm 26 items
    17. 7 mm 20 items
    18. 8 mm 39 items
    19. 9 mm 32 items
    20. 10 mm 54 items
    21. 11 mm 48 items
    22. 12 mm 74 items
    23. 13 mm 58 items
    24. 14 mm 91 items
    25. 15 mm 83 items
    26. 16 mm 67 items
    27. 17 mm 59 items
    28. 18 mm 53 items
    29. 19 mm 47 items
    30. 20 mm 35 items
    31. 22 mm 29 items
    32. 24 mm 21 items
    33. 25 mm 17 items
    34. 28 mm 9 items
    35. 30 mm 5 items
    36. 32 mm 1 item
    Keyway
    1. No 701 items
    2. Yes 608 items
    Outer Diameter (OD)
    1. 0.590 in (15.0 mm) 28 items
    2. 0.750 in (19.1 mm) 36 items
    3. 1.000 in (25.4 mm) 122 items
    4. 1.313 in (33.3 mm) 181 items
    5. 1.625 in (41.3 mm) 240 items
    6. 2.000 in (50.8 mm) 302 items
    7. 2.250 in (57.2 mm) 400 items
    Length (L)
    1. 0.719 in (18.3 mm) 28 items
    2. 0.906 in (23.0 mm) 36 items
    3. 1.031 in (26.2 mm) 122 items
    4. 1.313 in (33.3 mm) 181 items
    5. 1.563 in (39.7 mm) 240 items
    6. 1.813 in (46.1 mm) 302 items
    7. 2.313 in (58.8 mm) 400 items
    Static Torque
    1. 1.7 Nm 10 items
    2. 2.8 Nm 15 items
    3. 5.6 Nm 53 items
    4. 11.3 Nm 90 items
    5. 20.3 Nm 132 items
    6. 39.6 Nm 152 items
    7. 50.9 Nm 169 items
    8. 15 lb-in 6 items
    9. 25 lb-in 6 items
    10. 50 lb-in 17 items
    11. 100 lb-in 19 items
    12. 180 lb-in 20 items
    13. 350 lb-in 30 items
    14. 450 lb-in 56 items
    15. 15 lb-in (1.7 Nm) 12 items
    16. 25 lb-in (2.8 Nm) 15 items
    17. 50 lb-in (5.6 Nm) 52 items
    18. 100 lb-in (11.3 Nm) 72 items
    19. 180 lb-in (20.3 Nm) 88 items
    20. 350 lb-in (39.6 Nm) 120 items
    21. 450 lb-in (50.9 Nm) 175 items
    Angular Misalignment
    1. 0.5° 28 items
    2. 1.0° 1281 items
    Parallel Misalignment
    1. 0.00 in 154 items
    2. 0.000 in (0.00 mm) 534 items
    3. 0.00 mm 621 items
    Axial Motion
    1. 0.002 in 6 items
    2. 0.004 in 6 items
    3. 0.006 in 17 items
    4. 0.008 in 19 items
    5. 0.010 in 20 items
    6. 0.012 in 30 items
    7. 0.015 in 56 items
    8. 0.002 in (0.05 mm) 12 items
    9. 0.004 in (0.10 mm) 15 items
    10. 0.006 in (0.15 mm) 52 items
    11. 0.008 in (0.20 mm) 72 items
    12. 0.010 in (0.25 mm) 88 items
    13. 0.012 in (0.30 mm) 120 items
    14. 0.015 in (0.38 mm) 175 items
    15. 0.05 mm 10 items
    16. 0.10 mm 15 items
    17. 0.15 mm 53 items
    18. 0.20 mm 90 items
    19. 0.25 mm 132 items
    20. 0.32 mm 152 items
    21. 0.38 mm 169 items
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