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    Disc Couplings for Test, Measurement, and Inspection Applications

    Ruland disc couplings are zero-backlash and have high torque torsional stiffness capabilities making them a good fit for many test, measurement, and inspection applications. Single style disc couplings are comprised of anodized aluminum hubs and stainless steel disc springs. They are ideal for applications with space constraints but designers must be careful when using them as they cannot support parallel misalignment. Double disc couplings are made of two anodized aluminum hubs, an anodized aluminum or electrically isolating acetal spacer, and stainless steel disc springs. The double disc style can accommodate greater amounts of all types of misalignment than single disc types, including parallel misalignment.
    Disc couplings have similar performance characteristics to bellows couplings with slightly less torque in exchange for better misalignment capabilities. They are well-suited for testing, measuring, and inspecting equipment that requires high torsional rigidity and speed up to 10,000 RPM, such as those found in precision vision systems. They are available in clamp and set screw hubs with or without keyways in bore sizes ranging from 1/8” to 1-1/4” and 3mm to 32mm. Ruland manufactures disc couplings in our Marlborough, MA factory under strict controls using proprietary processes.

    Products

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    Items 1921-1944 of 2818

    Set Descending Direction
    1. Ruland MDCDK25-12-7-A, Double Disc Coupling
      MDCDK25-12-7-A
      As low as $89.34 $131.04
      Ruland MDCDK25-12-7-A, 12mm x 7mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    2. Ruland MDCDK25-12-8-A, Double Disc Coupling
      MDCDK25-12-8-A
      As low as $89.34 $131.04
      Ruland MDCDK25-12-8-A, 12mm x 8mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    3. Ruland MDCDK25-12-9-A, Double Disc Coupling
      MDCDK25-12-9-A
      As low as $89.34 $131.04
      Ruland MDCDK25-12-9-A, 12mm x 9mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    4. Ruland MDCDK25-7-6-A, Double Disc Coupling
      MDCDK25-7-6-A
      As low as $89.34 $131.04
      Ruland MDCDK25-7-6-A, 7mm x 6mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    5. Ruland MDCDK25-7-7-A, Double Disc Coupling
      MDCDK25-7-7-A
      As low as $89.34 $131.04
      Ruland MDCDK25-7-7-A, 7mm x 7mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    6. Ruland MDCDK25-8-6-A, Double Disc Coupling
      MDCDK25-8-6-A
      As low as $89.34 $131.04
      Ruland MDCDK25-8-6-A, 8mm x 6mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    7. Ruland MDCDK25-8-7-A, Double Disc Coupling
      MDCDK25-8-7-A
      As low as $89.34 $131.04
      Ruland MDCDK25-8-7-A, 8mm x 7mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    8. Ruland MDCDK25-8-8-A, Double Disc Coupling
      MDCDK25-8-8-A
      As low as $89.34 $131.04
      Ruland MDCDK25-8-8-A, 8mm x 8mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    9. Ruland MDCDK25-9-6-A, Double Disc Coupling
      MDCDK25-9-6-A
      As low as $89.34 $131.04
      Ruland MDCDK25-9-6-A, 9mm x 6mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    10. Ruland MDCDK25-9-7-A, Double Disc Coupling
      MDCDK25-9-7-A
      As low as $89.34 $131.04
      Ruland MDCDK25-9-7-A, 9mm x 7mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    11. Ruland MDCDK25-9-8-A, Double Disc Coupling
      MDCDK25-9-8-A
      As low as $89.34 $131.04
      Ruland MDCDK25-9-8-A, 9mm x 8mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    12. MDCDK25-9-9-A
      MDCDK25-9-9-A
      As low as $89.34 $131.04
      Ruland MDCDK25-9-9-A, 9mm x 9mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 25.4mm OD, 34.9mm Length
      Add to Compare
    13. Ruland MDCDK33-10-10-A, Double Disc Coupling
      MDCDK33-10-10-A
      As low as $98.31 $144.19
      Ruland MDCDK33-10-10-A, 10mm x 10mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    14. Ruland MDCDK33-10-8-A, Double Disc Coupling
      MDCDK33-10-8-A
      As low as $98.31 $144.19
      Ruland MDCDK33-10-8-A, 10mm x 8mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    15. Ruland MDCDK33-10-9-A, Double Disc Coupling
      MDCDK33-10-9-A
      As low as $98.31 $144.19
      Ruland MDCDK33-10-9-A, 10mm x 9mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    16. Ruland MDCDK33-11-10-A, Double Disc Coupling
      MDCDK33-11-10-A
      As low as $98.31 $144.19
      Ruland MDCDK33-11-10-A, 11mm x 10mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    17. Ruland MDCDK33-11-11-A, Double Disc Coupling
      MDCDK33-11-11-A
      As low as $98.31 $144.19
      Ruland MDCDK33-11-11-A, 11mm x 11mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    18. Ruland MDCDK33-11-8-A, Double Disc Coupling
      MDCDK33-11-8-A
      As low as $98.31 $144.19
      Ruland MDCDK33-11-8-A, 11mm x 8mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    19. Ruland MDCDK33-11-9-A, Double Disc Coupling
      MDCDK33-11-9-A
      As low as $98.31 $144.19
      Ruland MDCDK33-11-9-A, 11mm x 9mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    20. Ruland MDCDK33-12-10-A, Double Disc Coupling
      MDCDK33-12-10-A
      As low as $98.31 $144.19
      Ruland MDCDK33-12-10-A, 12mm x 10mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    21. Ruland MDCDK33-12-11-A, Double Disc Coupling
      MDCDK33-12-11-A
      As low as $98.31 $144.19
      Ruland MDCDK33-12-11-A, 12mm x 11mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    22. Ruland MDCDK33-12-12-A, Double Disc Coupling
      MDCDK33-12-12-A
      As low as $98.31 $144.19
      Ruland MDCDK33-12-12-A, 12mm x 12mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    23. Ruland MDCDK33-12-8-A, Double Disc Coupling
      MDCDK33-12-8-A
      As low as $98.31 $144.19
      Ruland MDCDK33-12-8-A, 12mm x 8mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
    24. Ruland MDCDK33-12-9-A, Double Disc Coupling
      MDCDK33-12-9-A
      As low as $98.31 $144.19
      Ruland MDCDK33-12-9-A, 12mm x 9mm Double Disc Coupling, Aluminum, Clamp Style With Keyway, 33.3mm OD, 45.0mm Length
      Add to Compare
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    Bore Type
    Unit of Measurement
    1. Inch 393 items
    2. Inch/Metric 1068 items
    3. Metric 1357 items
    Bore (B1)
    1. 0.1250 in 5 items
    2. 0.1875 in 15 items
    3. 0.2500 in 34 items
    4. 0.3125 in 30 items
    5. 0.3750 in 54 items
    6. 0.5000 in 119 items
    7. 0.6250 in 135 items
    8. 0.7500 in 146 items
    9. 0.8750 in 112 items
    10. 1.0000 in 138 items
    11. 1.1250 in 74 items
    12. 1.2500 in 83 items
    13. 3 mm 3 items
    14. 4 mm 11 items
    15. 5 mm 21 items
    16. 6 mm 30 items
    17. 7 mm 22 items
    18. 8 mm 51 items
    19. 9 mm 33 items
    20. 10 mm 66 items
    21. 11 mm 72 items
    22. 12 mm 98 items
    23. 13 mm 64 items
    24. 14 mm 102 items
    25. 15 mm 122 items
    26. 16 mm 158 items
    27. 17 mm 100 items
    28. 18 mm 112 items
    29. 19 mm 124 items
    30. 20 mm 163 items
    31. 22 mm 96 items
    32. 24 mm 112 items
    33. 25 mm 131 items
    34. 28 mm 64 items
    35. 30 mm 78 items
    36. 32 mm 40 items
    Small Bore (B2)
    1. 0.1250 in 15 items
    2. 0.1875 in 27 items
    3. 0.2500 in 51 items
    4. 0.3125 in 92 items
    5. 0.3750 in 129 items
    6. 0.5000 in 232 items
    7. 0.6250 in 163 items
    8. 0.7500 in 91 items
    9. 0.8750 in 56 items
    10. 1.0000 in 30 items
    11. 1.1250 in 16 items
    12. 1.2500 in 7 items
    13. 3 mm 18 items
    14. 4 mm 33 items
    15. 5 mm 23 items
    16. 6 mm 59 items
    17. 7 mm 40 items
    18. 8 mm 88 items
    19. 9 mm 65 items
    20. 10 mm 121 items
    21. 11 mm 96 items
    22. 12 mm 164 items
    23. 13 mm 116 items
    24. 14 mm 200 items
    25. 15 mm 179 items
    26. 16 mm 145 items
    27. 17 mm 118 items
    28. 18 mm 106 items
    29. 19 mm 94 items
    30. 20 mm 76 items
    31. 22 mm 58 items
    32. 24 mm 42 items
    33. 25 mm 37 items
    34. 28 mm 18 items
    35. 30 mm 11 items
    36. 32 mm 2 items
    Keyway
    1. No 1601 items
    2. Yes 1217 items
    Outer Diameter (OD)
    1. 0.590 in (15.0 mm) 72 items
    2. 0.750 in (19.1 mm) 88 items
    3. 1.000 in (25.4 mm) 265 items
    4. 1.313 in (33.3 mm) 393 items
    5. 1.625 in (41.3 mm) 511 items
    6. 2.000 in (50.8 mm) 640 items
    7. 2.250 in (57.2 mm) 849 items
    Length (L)
    1. 0.719 in (18.3 mm) 28 items
    2. 0.906 in (23.0 mm) 36 items
    3. 0.937 in (23.8 mm) 44 items
    4. 1.031 in (26.2 mm) 122 items
    5. 1.189 in (30.2 mm) 52 items
    6. 1.313 in (33.3 mm) 181 items
    7. 1.374 in (34.9 mm) 143 items
    8. 1.563 in (39.7 mm) 240 items
    9. 1.770 in (45.0 mm) 212 items
    10. 1.813 in (46.1 mm) 302 items
    11. 2.165 in (55.0 mm) 271 items
    12. 2.313 in (58.8 mm) 400 items
    13. 2.519 in (64.0 mm) 338 items
    14. 3.080 in (78.2 mm) 449 items
    Static Torque
    1. 1.7 Nm 30 items
    2. 2.8 Nm 40 items
    3. 5.6 Nm 117 items
    4. 11.3 Nm 201 items
    5. 20.3 Nm 285 items
    6. 39.6 Nm 325 items
    7. 50.9 Nm 359 items
    8. 15 lb-in 18 items
    9. 25 lb-in 18 items
    10. 50 lb-in 44 items
    11. 100 lb-in 48 items
    12. 180 lb-in 50 items
    13. 350 lb-in 75 items
    14. 450 lb-in 140 items
    15. 15 lb-in (1.7 Nm) 24 items
    16. 25 lb-in (2.8 Nm) 30 items
    17. 50 lb-in (5.6 Nm) 104 items
    18. 100 lb-in (11.3 Nm) 144 items
    19. 180 lb-in (20.3 Nm) 176 items
    20. 350 lb-in (39.6 Nm) 240 items
    21. 450 lb-in (50.9 Nm) 350 items
    Angular Misalignment
    1. 0.5° 28 items
    2. 1.0° 1325 items
    3. 2.0° 1465 items
    Parallel Misalignment
    1. 0.00 in 154 items
    2. 0.002 in 12 items
    3. 0.004 in 12 items
    4. 0.006 in 27 items
    5. 0.008 in 29 items
    6. 0.010 in 30 items
    7. 0.012 in 129 items
    8. 0.000 in (0.00 mm) 534 items
    9. 0.002 in (0.05 mm) 12 items
    10. 0.004 in (0.10 mm) 15 items
    11. 0.006 in (0.15 mm) 52 items
    12. 0.008 in (0.20 mm) 72 items
    13. 0.010 in (0.25 mm) 88 items
    14. 0.012 in (0.30 mm) 295 items
    15. 0.00 mm 621 items
    16. 0.05 mm 20 items
    17. 0.10 mm 25 items
    18. 0.15 mm 64 items
    19. 0.20 mm 111 items
    20. 0.25 mm 153 items
    21. 0.30 mm 363 items
    Axial Motion
    1. 0.002 in 6 items
    2. 0.004 in 18 items
    3. 0.006 in 17 items
    4. 0.008 in 31 items
    5. 0.010 in 20 items
    6. 0.012 in 57 items
    7. 0.015 in 56 items
    8. 0.016 in 29 items
    9. 0.020 in 30 items
    10. 0.025 in 45 items
    11. 0.030 in 84 items
    12. 0.002 in (0.05 mm) 12 items
    13. 0.004 in (0.10 mm) 27 items
    14. 0.006 in (0.15 mm) 52 items
    15. 0.008 in (0.20 mm) 87 items
    16. 0.010 in (0.25 mm) 88 items
    17. 0.012 in (0.30 mm) 172 items
    18. 0.015 in (0.38 mm) 175 items
    19. 0.016 in (0.40 mm) 72 items
    20. 0.020 in (0.51 mm) 88 items
    21. 0.025 in (0.64 mm) 120 items
    22. 0.030 in (0.76 mm) 175 items
    23. 0.05 mm 10 items
    24. 0.10 mm 35 items
    25. 0.15 mm 53 items
    26. 0.20 mm 115 items
    27. 0.25 mm 132 items
    28. 0.30 mm 64 items
    29. 0.32 mm 152 items
    30. 0.38 mm 169 items
    31. 0.40 mm 111 items
    32. 0.51 mm 153 items
    33. 0.64 mm 173 items
    34. 0.76 mm 190 items
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