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    JUMP TO: About Why Ruland Custom Designs Products

    About

    Double Disc

    Ruland double disc couplings are comprised of two anodized aluminum hubs, two sets of stainless steel disc springs, and a center spacer. This design allows the sets of disc springs to bend independent of each other to accommodate all forms of misalignment, including parallel. Center spacers are available in anodized aluminum or acetal for electrical isolation. 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.

    EXPLORE >>
    Double Disc
    Single Disc

    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.

    EXPLORE >>
    Single Disc
    Electrically Isolating

    Ruland electrically isolating double disc couplings are comprised of two anodized aluminum hubs, two sets of stainless steel disc springs, and an acetal center spacer. This design allows the sets of disc springs to bend independent of each other to accommodate all forms of misalignment, including parallel. 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 30mm.

    EXPLORE >>
    Electrically Isolating

    Why Ruland Disc Couplings?

    • High torque and torsional stiffness with industry-leading misalignment capabilities due to Ruland’s proprietary disc spring design.
    • No contaminants will transfer from the coupling to the system because of machining processes that leave a fine, burr-free finish.
    • Speeds up to 10,000 RPMs with reduced vibrations due to our standard balanced design.
    • Suitable for a wide variety of precise positioning applications because of the three styles offered:
      • Single disc for compact installations.
      • Double disc with an aluminum center spacer for the best balance of torque, stiffness, and misalignment.
      • Double disc with an acetal center spacer for electrical isolation.
      • True ratings based on actual testing.




    CUSTOM DESIGNS

    As a service to our customers, we offer our vast manufacturing experience and talents to meet special needs with custom parts. Our in-house engineering team has extensive experience designing and custom engineering solutions to meet your requirements. If you do not see what you are looking for in our standard line, please inquire about custom options.
    Examples of Custom Work
    • Stainless steel disc coupling
    • Extra disc springs for stiffness
    • Extended length of center spacer
    • Clamp to set screw hubs
    • Special bore sizes and geometry
    • Special lengths, widths and outside diameters
    • Different materials, finishes, or colors
    • Custom hardware requests
    • And Many Others... Please Contact Us for More Information

    Products

    View as Grid Table

    Items 25-48 of 3397

    Set Descending Direction
    1. Ruland DCD12-4-4-A, Double Disc Coupling
      DCD12-4-4-A
      As low as $69.53 $101.98
      Ruland DCD12-4-4-A, 1/4" x 1/4" Double Disc Coupling, Aluminum, Clamp Style, 0.750" OD, 1.189" Length
      Add to Compare
    2. Ruland DCD12-5-3-A, Double Disc Coupling
      DCD12-5-3-A
      As low as $69.53 $101.98
      Ruland DCD12-5-3-A, 5/16" x 3/16" Double Disc Coupling, Aluminum, Clamp Style, 0.750" OD, 1.189" Length
      Add to Compare
    3. Ruland DCD12-5-4-A, Double Disc Coupling
      DCD12-5-4-A
      As low as $69.53 $101.98
      Ruland DCD12-5-4-A, 5/16" x 1/4" Double Disc Coupling, Aluminum, Clamp Style, 0.750" OD, 1.189" Length
      Add to Compare
    4. Ruland DCD12-5-5-A, Double Disc Coupling
      DCD12-5-5-A
      As low as $69.53 $101.98
      Ruland DCD12-5-5-A, 5/16" x 5/16" Double Disc Coupling, Aluminum, Clamp Style, 0.750" OD, 1.189" Length
      Add to Compare
    5. Ruland DCD12-5/16"-4MM-A, Double Disc Coupling
      DCD12-5/16"-4MM-A
      As low as $69.53 $101.98
      Ruland DCD12-5/16"-4MM-A, 5/16" x 4mm Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    6. Ruland DCD12-5/16"-5MM-A, Double Disc Coupling
      DCD12-5/16"-5MM-A
      As low as $69.53 $101.98
      Ruland DCD12-5/16"-5MM-A, 5/16" x 5mm Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    7. Ruland DCD12-5/16"-6MM-A, Double Disc Coupling
      DCD12-5/16"-6MM-A
      As low as $69.53 $101.98
      Ruland DCD12-5/16"-6MM-A, 5/16" x 6mm Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    8. Ruland DCD12-5/16"-7MM-A, Double Disc Coupling
      DCD12-5/16"-7MM-A
      As low as $69.53 $101.98
      Ruland DCD12-5/16"-7MM-A, 5/16" x 7mm Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    9. Ruland DCD12-5MM-3/16"-A, Double Disc Coupling
      DCD12-5MM-3/16"-A
      As low as $69.53 $101.98
      Ruland DCD12-5MM-3/16"-A, 5mm x 3/16" Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    10. Ruland DCD12-6MM-3/16"-A, Double Disc Coupling
      DCD12-6MM-3/16"-A
      As low as $69.53 $101.98
      Ruland DCD12-6MM-3/16"-A, 6mm x 3/16" Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    11. Ruland DCD12-7MM-1/4"-A, Double Disc Coupling
      DCD12-7MM-1/4"-A
      As low as $69.53 $101.98
      Ruland DCD12-7MM-1/4"-A, 7mm x 1/4" Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    12. Ruland DCD12-7MM-3/16"-A, Double Disc Coupling
      DCD12-7MM-3/16"-A
      As low as $69.53 $101.98
      Ruland DCD12-7MM-3/16"-A, 7mm x 3/16" Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    13. Ruland DCD12-8MM-1/4"-A, Double Disc Coupling
      DCD12-8MM-1/4"-A
      As low as $69.53 $101.98
      Ruland DCD12-8MM-1/4"-A, 8mm x 1/4" Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    14. Ruland DCD12-8MM-3/16"-A, Double Disc Coupling
      DCD12-8MM-3/16"-A
      As low as $69.53 $101.98
      Ruland DCD12-8MM-3/16"-A, 8mm x 3/16" Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    15. Ruland DCD12-8MM-5/16"-A, Double Disc Coupling
      DCD12-8MM-5/16"-A
      As low as $69.53 $101.98
      Ruland DCD12-8MM-5/16"-A, 8mm x 5/16" Double Disc Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.189" (30.2mm) Length
      Add to Compare
    16. Ruland DCD16-1/2"-10MM-A, Double Disc Coupling
      DCD16-1/2"-10MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/2"-10MM-A, 1/2" x 10mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    17. Ruland DCD16-1/2"-11MM-A, Double Disc Coupling
      DCD16-1/2"-11MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/2"-11MM-A, 1/2" x 11mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    18. Ruland DCD16-1/2"-12MM-A, Double Disc Coupling
      DCD16-1/2"-12MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/2"-12MM-A, 1/2" x 12mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    19. Ruland DCD16-1/2"-6MM-A, Double Disc Coupling
      DCD16-1/2"-6MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/2"-6MM-A, 1/2" x 6mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    20. Ruland DCD16-1/2"-7MM-A, Double Disc Coupling
      DCD16-1/2"-7MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/2"-7MM-A, 1/2" x 7mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    21. Ruland DCD16-1/2"-8MM-A, Double Disc Coupling
      DCD16-1/2"-8MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/2"-8MM-A, 1/2" x 8mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    22. Ruland DCD16-1/2"-9MM-A, Double Disc Coupling
      DCD16-1/2"-9MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/2"-9MM-A, 1/2" x 9mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    23. Ruland DCD16-1/4"-6MM-A, Double Disc Coupling
      DCD16-1/4"-6MM-A
      As low as $77.26 $113.31
      Ruland DCD16-1/4"-6MM-A, 1/4" x 6mm Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
    24. Ruland DCD16-10MM-1/4"-A, Double Disc Coupling
      DCD16-10MM-1/4"-A
      As low as $77.26 $113.31
      Ruland DCD16-10MM-1/4"-A, 10mm x 1/4" Double Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.374" (34.9mm) Length
      Add to Compare
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    1. Inch 505 items
    2. Inch/Metric 1320 items
    3. Metric 1572 items
    Bore (B1)
    1. 0.1250 in 5 items
    2. 0.1875 in 15 items
    3. 0.2500 in 34 items
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    12. 1.2500 in 117 items
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    14. 1.5000 in 54 items
    15. 1.6250 in 26 items
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    17. 3 mm 3 items
    18. 4 mm 11 items
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    31. 17 mm 100 items
    32. 18 mm 112 items
    33. 19 mm 124 items
    34. 20 mm 167 items
    35. 22 mm 102 items
    36. 24 mm 122 items
    37. 25 mm 145 items
    38. 28 mm 86 items
    39. 30 mm 108 items
    40. 32 mm 78 items
    41. 35 mm 46 items
    42. 38 mm 50 items
    43. 40 mm 24 items
    44. 42 mm 28 items
    45. 45 mm 32 items
    46. 3/2.5D mm 1 item
    47. 4/3.5D mm 2 items
    48. 5/4.5D mm 4 items
    49. 6/5.5D mm 7 items
    50. 7/6.5D mm 5 items
    51. 8/7.5D mm 7 items
    52. 9/8.5D mm 4 items
    53. 10/9.5D mm 5 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 123 items
    9. 0.8750 in 82 items
    10. 1.0000 in 80 items
    11. 1.1250 in 58 items
    12. 1.2500 in 41 items
    13. 1.3750 in 26 items
    14. 1.5000 in 14 items
    15. 1.6250 in 8 items
    16. 1.7500 in 4 items
    17. 3 mm 18 items
    18. 4 mm 33 items
    19. 5 mm 23 items
    20. 6 mm 59 items
    21. 7 mm 40 items
    22. 8 mm 88 items
    23. 9 mm 65 items
    24. 10 mm 121 items
    25. 11 mm 96 items
    26. 12 mm 164 items
    27. 13 mm 116 items
    28. 14 mm 200 items
    29. 15 mm 179 items
    30. 16 mm 145 items
    31. 17 mm 118 items
    32. 18 mm 106 items
    33. 19 mm 94 items
    34. 20 mm 106 items
    35. 22 mm 86 items
    36. 24 mm 66 items
    37. 25 mm 91 items
    38. 28 mm 64 items
    39. 30 mm 49 items
    40. 32 mm 32 items
    41. 35 mm 22 items
    42. 38 mm 18 items
    43. 40 mm 10 items
    44. 42 mm 6 items
    45. 45 mm 2 items
    46. 3/2.5D mm 4 items
    47. 4/3.5D mm 3 items
    48. 5/4.5D mm 6 items
    49. 6/5.5D mm 9 items
    50. 7/6.5D mm 6 items
    51. 8/7.5D mm 4 items
    52. 9/8.5D mm 2 items
    53. 10/9.5D mm 1 item
    Keyway
    1. No 1908 items
    2. Yes 1489 items
    Outer Diameter (OD)
    1. 0.590 in (15.0 mm) 82 items
    2. 0.750 in (19.1 mm) 98 items
    3. 1.000 in (25.4 mm) 280 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
    8. 2.750 in (69.9 mm) 272 items
    9. 3.125 in (79.4 mm) 272 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) 54 items
    4. 1.031 in (26.2 mm) 122 items
    5. 1.189 in (30.2 mm) 62 items
    6. 1.313 in (33.3 mm) 181 items
    7. 1.374 in (34.9 mm) 158 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
    15. 3.531 in (89.7 mm) 272 items
    16. 3.938 in (100.0 mm) 272 items
    Static Torque
    1. 1.7 Nm 40 items
    2. 2.8 Nm 50 items
    3. 5.6 Nm 132 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. 96.03 Nm 90 items
    9. 129.93 Nm 90 items
    10. 15 lb-in 18 items
    11. 25 lb-in 18 items
    12. 50 lb-in 44 items
    13. 100 lb-in 48 items
    14. 180 lb-in 50 items
    15. 350 lb-in 75 items
    16. 450 lb-in 140 items
    17. 850 lb-in 56 items
    18. 1150 lb-in 56 items
    19. 15 lb-in (1.7 Nm) 24 items
    20. 25 lb-in (2.8 Nm) 30 items
    21. 50 lb-in (5.6 Nm) 104 items
    22. 100 lb-in (11.3 Nm) 144 items
    23. 180 lb-in (20.3 Nm) 176 items
    24. 350 lb-in (39.6 Nm) 240 items
    25. 450 lb-in (50.9 Nm) 350 items
    26. 850 lb-in (96.03 Nm) 126 items
    27. 1150 lb-in (129.93 Nm) 126 items
    Angular Misalignment
    1. 0.5° 28 items
    2. 1.0° 1335 items
    3. 2.0° 2034 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 241 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) 547 items
    15. 0.00 mm 621 items
    16. 0.05 mm 30 items
    17. 0.10 mm 35 items
    18. 0.15 mm 79 items
    19. 0.20 mm 111 items
    20. 0.25 mm 153 items
    21. 0.30 mm 543 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 196 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) 427 items
    23. 0.05 mm 10 items
    24. 0.10 mm 45 items
    25. 0.15 mm 53 items
    26. 0.20 mm 125 items
    27. 0.25 mm 132 items
    28. 0.30 mm 79 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 370 items
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