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    JUMP TO: About Why Ruland Custom Designs Products

    About

    Standard Length

    Ruland standard length bellows couplings have fewer convolutions than comparably sized extended length styles allowing for stiffness increases up to 33%. They are ideal for applications that require a flexible coupling with high accuracy and repeatability. Standard bellows couplings are available in clamp style hubs with or without keyways in inch, metric, and inch-to-metric bore combinations ranging from 1/8” to 1 3/4" and 3mm to 45mm. Ruland manufactures them in our ISO 9001:2015 certified advanced manufacturing facility in Massachusetts, USA. They are RoHS3, REACH, and Conflict Minerals compliant.

    EXPLORE >>
    Standard Length
    Extended Length

    Ruland extended length bellows couplings have more convolutions than standard bellows styles allowing for up to double the misalignment. They are ideal for precise positioning applications that utilize a servo or stepper motor connected to a ball screw, lead screw, or gearbox. Extended length bellows couplings are available in clamp style hubs with or without keyways in inch, metric, and inch-to-metric bore combinations ranging from 3/16” to 3/4" and 4mm to 20mm. Ruland manufactures them in our ISO 9001:2015 certified advanced manufacturing facility in Massachusetts, USA. They are RoHS3, REACH, and Conflict Minerals compliant.

    EXPLORE >>
    Extended Length

    Why Ruland Bellows Couplings?

    • Speeds up to 10,000 RPMs with reduced vibrations due to our standard balanced design.
    • Do not introduce misalignment causing high bearing loads because of proprietary assembly processes that maintain bore concentricity.
    • High torque and torsional stiffness with industry-leading misalignment capabilities.
    • Low inertia for use in highly responsive systems due to the use of high-grade lightweight 2024 t351 aluminum.
    • 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 bellows couplings
    • 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 577-600 of 2521

    Set Descending Direction
    1. Ruland BCK16-8-4-A, Bellows Coupling
      BCK16-8-4-A
      As low as $106.35 $155.98
      Ruland BCK16-8-4-A, 1/2" x 1/4" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000", OD 1.345" Length
      Add to Compare
    2. Ruland BCK16-8-5-A, Bellows Coupling
      BCK16-8-5-A
      As low as $106.35 $155.98
      Ruland BCK16-8-5-A, 1/2" x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000", OD 1.345" Length
      Add to Compare
    3. Ruland BCK16-8-6-A, Bellows Coupling
      BCK16-8-6-A
      As low as $106.35 $155.98
      Ruland BCK16-8-6-A, 1/2" x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000", OD 1.345" Length
      Add to Compare
    4. Ruland BCK16-8-8-A, Bellows Coupling
      BCK16-8-8-A
      As low as $106.35 $155.98
      Ruland BCK16-8-8-A, 1/2" x 1/2" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000", OD 1.345" Length
      Add to Compare
    5. Ruland BCK16-8MM-1/4"-A, Bellows Coupling
      BCK16-8MM-1/4"-A
      As low as $106.35 $155.98
      Ruland BCK16-8MM-1/4"-A, 8mm x 1/4" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    6. Ruland BCK16-8MM-5/16"-A, Bellows Coupling
      BCK16-8MM-5/16"-A
      As low as $106.35 $155.98
      Ruland BCK16-8MM-5/16"-A, 8mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    7. Ruland BCK16-9MM-1/4"-A, Bellows Coupling
      BCK16-9MM-1/4"-A
      As low as $106.35 $155.98
      Ruland BCK16-9MM-1/4"-A, 9mm x 1/4" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    8. Ruland BCK16-9MM-5/16"-A, Bellows Coupling
      BCK16-9MM-5/16"-A
      As low as $106.35 $155.98
      Ruland BCK16-9MM-5/16"-A, 9mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    9. Ruland BCK21-1/2"-10MM-A, Bellows Coupling
      BCK21-1/2"-10MM-A
      As low as $115.40 $169.25
      Ruland BCK21-1/2"-10MM-A, 1/2" x 10mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    10. Ruland BCK21-1/2"-11MM-A, Bellows Coupling
      BCK21-1/2"-11MM-A
      As low as $115.40 $169.25
      Ruland BCK21-1/2"-11MM-A, 1/2" x 11mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    11. Ruland BCK21-1/2"-12MM-A, Bellows Coupling
      BCK21-1/2"-12MM-A
      As low as $115.40 $169.25
      Ruland BCK21-1/2"-12MM-A, 1/2" x 12mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    12. Ruland BCK21-1/2"-8MM-A, Bellows Coupling
      BCK21-1/2"-8MM-A
      As low as $115.40 $169.25
      Ruland BCK21-1/2"-8MM-A, 1/2" x 8mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    13. Ruland BCK21-1/2"-9MM-A, Bellows Coupling
      BCK21-1/2"-9MM-A
      As low as $115.40 $169.25
      Ruland BCK21-1/2"-9MM-A, 1/2" x 9mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    14. Ruland BCK21-10-10-A, Bellows Coupling
      BCK21-10-10-A
      As low as $115.40 $169.25
      Ruland BCK21-10-10-A, 5/8" x 5/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313", OD 1.700" Length
      Add to Compare
    15. Ruland BCK21-10-5-A, Bellows Coupling
      BCK21-10-5-A
      As low as $115.40 $169.25
      Ruland BCK21-10-5-A, 5/8" x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313", OD 1.700" Length
      Add to Compare
    16. Ruland BCK21-10-6-A, Bellows Coupling
      BCK21-10-6-A
      As low as $115.40 $169.25
      Ruland BCK21-10-6-A, 5/8" x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313", OD 1.700" Length
      Add to Compare
    17. Ruland BCK21-10-8-A, Bellows Coupling
      BCK21-10-8-A
      As low as $115.40 $169.25
      Ruland BCK21-10-8-A, 5/8" x 1/2" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313", OD 1.700" Length
      Add to Compare
    18. Ruland BCK21-10MM-3/8"-A, Bellows Coupling
      BCK21-10MM-3/8"-A
      As low as $115.40 $169.25
      Ruland BCK21-10MM-3/8"-A, 10mm x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    19. Ruland BCK21-10MM-5/16"-A, Bellows Coupling
      BCK21-10MM-5/16"-A
      As low as $115.40 $169.25
      Ruland BCK21-10MM-5/16"-A, 10mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    20. Ruland BCK21-11MM-3/8"-A, Bellows Coupling
      BCK21-11MM-3/8"-A
      As low as $115.40 $169.25
      Ruland BCK21-11MM-3/8"-A, 11mm x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    21. Ruland BCK21-11MM-5/16"-A, Bellows Coupling
      BCK21-11MM-5/16"-A
      As low as $115.40 $169.25
      Ruland BCK21-11MM-5/16"-A, 11mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    22. Ruland BCK21-12MM-3/8"-A, Bellows Coupling
      BCK21-12MM-3/8"-A
      As low as $115.40 $169.25
      Ruland BCK21-12MM-3/8"-A, 12mm x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    23. Ruland BCK21-12MM-5/16"-A, Bellows Coupling
      BCK21-12MM-5/16"-A
      As low as $115.40 $169.25
      Ruland BCK21-12MM-5/16"-A, 12mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    24. Ruland BCK21-13MM-1/2"-A, Bellows Coupling
      BCK21-13MM-1/2"-A
      As low as $115.40 $169.25
      Ruland BCK21-13MM-1/2"-A, 13mm x 1/2" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.313" (33.3mm), OD 1.700" (43.2mm) Length
      Add to Compare
    Page
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    Bore Type
    Unit of Measurement
    1. Inch 328 items
    2. Inch/Metric 1020 items
    3. Metric 1173 items
    Bore (B1)
    1. 0.1250 in 2 items
    2. 0.1875 in 8 items
    3. 0.2500 in 21 items
    4. 0.3125 in 24 items
    5. 0.3750 in 48 items
    6. 0.5000 in 102 items
    7. 0.6250 in 104 items
    8. 0.7500 in 98 items
    9. 0.8750 in 60 items
    10. 1.0000 in 82 items
    11. 1.1250 in 60 items
    12. 1.2500 in 72 items
    13. 1.3750 in 42 items
    14. 1.5000 in 54 items
    15. 1.6250 in 26 items
    16. 1.7500 in 30 items
    17. 3 mm 1 item
    18. 4 mm 5 items
    19. 5 mm 11 items
    20. 6 mm 16 items
    21. 7 mm 22 items
    22. 8 mm 44 items
    23. 9 mm 36 items
    24. 10 mm 60 items
    25. 11 mm 72 items
    26. 12 mm 86 items
    27. 13 mm 66 items
    28. 14 mm 80 items
    29. 15 mm 92 items
    30. 16 mm 116 items
    31. 17 mm 72 items
    32. 18 mm 80 items
    33. 19 mm 88 items
    34. 20 mm 108 items
    35. 21 mm 1 item
    36. 22 mm 54 items
    37. 24 mm 66 items
    38. 25 mm 74 items
    39. 28 mm 54 items
    40. 30 mm 66 items
    41. 32 mm 78 items
    42. 35 mm 46 items
    43. 38 mm 50 items
    44. 40 mm 24 items
    45. 42 mm 28 items
    46. 45 mm 32 items
    47. 3/2.5D mm 1 item
    48. 4/3.5D mm 2 items
    49. 5/4.5D mm 5 items
    50. 6/5.5D mm 10 items
    51. 7/6.5D mm 10 items
    52. 8/7.5D mm 14 items
    53. 9/8.5D mm 8 items
    54. 10/9.5D mm 10 items
    Small Bore (B2)
    1. 0.1250 in 6 items
    2. 0.1875 in 18 items
    3. 0.2500 in 43 items
    4. 0.3125 in 84 items
    5. 0.3750 in 120 items
    6. 0.5000 in 144 items
    7. 0.6250 in 94 items
    8. 0.7500 in 78 items
    9. 0.8750 in 52 items
    10. 1.0000 in 64 items
    11. 1.1250 in 50 items
    12. 1.2500 in 38 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 7 items
    18. 4 mm 21 items
    19. 5 mm 15 items
    20. 6 mm 50 items
    21. 7 mm 40 items
    22. 8 mm 78 items
    23. 9 mm 68 items
    24. 10 mm 108 items
    25. 11 mm 96 items
    26. 12 mm 118 items
    27. 13 mm 90 items
    28. 14 mm 118 items
    29. 15 mm 106 items
    30. 16 mm 82 items
    31. 17 mm 70 items
    32. 18 mm 62 items
    33. 19 mm 55 items
    34. 20 mm 68 items
    35. 22 mm 58 items
    36. 24 mm 46 items
    37. 25 mm 72 items
    38. 28 mm 56 items
    39. 30 mm 44 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 10 items
    49. 6/5.5D mm 17 items
    50. 7/6.5D mm 12 items
    51. 8/7.5D mm 8 items
    52. 9/8.5D mm 4 items
    53. 10/9.5D mm 2 items
    Keyway
    1. No 1350 items
    2. Yes 1171 items
    Outer Diameter (OD)
    1. 0.590 in (15.0 mm) 38 items
    2. 0.750 in (19.1 mm) 92 items
    3. 1.000 in (25.4 mm) 278 items
    4. 1.313 in (33.3 mm) 362 items
    5. 1.625 in (41.3 mm) 480 items
    6. 2.000 in (50.8 mm) 307 items
    7. 2.250 in (57.2 mm) 420 items
    8. 2.750 in (69.9 mm) 272 items
    9. 3.125 in (79.4 mm) 272 items
    Length (L)
    1. 1.076 in (27.3 mm) 38 items
    2. 1.306 in (33.2 mm) 46 items
    3. 1.345 in (34.2 mm) 139 items
    4. 1.355 in (34.4 mm) 46 items
    5. 1.523 in (38.7 mm) 139 items
    6. 1.700 in (43.2 mm) 181 items
    7. 1.962 in (49.8 mm) 181 items
    8. 2.035 in (51.7 mm) 240 items
    9. 2.316 in (58.8 mm) 240 items
    10. 2.413 in (61.3 mm) 307 items
    11. 3.235 in (82.2 mm) 420 items
    12. 3.431 in (87.1 mm) 136 items
    13. 3.439 in (87.4 mm) 136 items
    14. 3.808 in (96.7 mm) 136 items
    15. 3.816 in (96.9 mm) 136 items
    Static Torque
    1. 2.5 Nm 20 items
    2. 4.5 Nm 50 items
    3. 6.8 Nm 140 items
    4. 13.6 Nm 180 items
    5. 28.0 Nm 264 items
    6. 45.2 Nm 157 items
    7. 60.00 Nm 182 items
    8. 104.5 Nm 90 items
    9. 152 Nm 90 items
    10. 22 lb-in 6 items
    11. 40 lb-in 12 items
    12. 60 lb-in 34 items
    13. 120 lb-in 38 items
    14. 250 lb-in 40 items
    15. 400 lb-in 30 items
    16. 530 lb-in 56 items
    17. 925 lb-in 56 items
    18. 1350 lb-in 56 items
    19. 22 lb-in (2.5 Nm) 12 items
    20. 40 lb-in (4.5 Nm) 30 items
    21. 60 lb-in (6.8 Nm) 104 items
    22. 120 lb-in (13.6 Nm) 144 items
    23. 250 lb-in (28.0 Nm) 176 items
    24. 400 lb-in (45.2 Nm) 120 items
    25. 530 lb-in (60.00 Nm) 182 items
    26. 925 lb-in (104.5 Nm) 126 items
    27. 1350 lb-in (152 Nm) 126 items
    Angular Misalignment
    1. 1.5° 404 items
    2. 2.0° 1511 items
    3. 3.0° 606 items
    Parallel Misalignment
    1. 0.004 in 29 items
    2. 0.006 in 19 items
    3. 0.008 in 23 items
    4. 0.010 in 50 items
    5. 0.012 in 187 items
    6. 0.015 in 20 items
    7. 0.004 in (0.10 mm) 79 items
    8. 0.006 in (0.15 mm) 72 items
    9. 0.008 in (0.20 mm) 67 items
    10. 0.010 in (0.25 mm) 208 items
    11. 0.012 in (0.30 mm) 506 items
    12. 0.015 in (0.38 mm) 88 items
    13. 0.10 mm 115 items
    14. 0.15 mm 90 items
    15. 0.20 mm 95 items
    16. 0.25 mm 289 items
    17. 0.30 mm 452 items
    18. 0.38 mm 132 items
    Axial Motion
    1. 0.008 in 6 items
    2. 0.010 in 6 items
    3. 0.012 in 17 items
    4. 0.016 in 19 items
    5. 0.020 in 56 items
    6. 0.024 in 17 items
    7. 0.030 in 188 items
    8. 0.032 in 19 items
    9. 0.008 in (0.20 mm) 12 items
    10. 0.010 in (0.25 mm) 15 items
    11. 0.012 in (0.30 mm) 52 items
    12. 0.016 in (0.40 mm) 72 items
    13. 0.020 in (0.51 mm) 223 items
    14. 0.024 in (0.61 mm) 52 items
    15. 0.030 in (0.76 mm) 522 items
    16. 0.032 in (0.81 mm) 72 items
    17. 0.20 mm 20 items
    18. 0.25 mm 25 items
    19. 0.30 mm 70 items
    20. 0.40 mm 90 items
    21. 0.50 mm 289 items
    22. 0.51 mm 25 items
    23. 0.61 mm 70 items
    24. 0.75 mm 182 items
    25. 0.76 mm 312 items
    26. 0.81 mm 90 items
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