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    Standard bellows Coupling: Inch to Metric

    Standard bellows couplings with inch to metric bore combinations are available with clamp style hubs with or without keyways in bore dimensions ranging from 1/8" (3mm) to 1-3/4" (45mm). Stainless steel hubs and other custom features are available by special order.

    Features

    • High torque with low inertia
    • Balanced design for high RPM
    • Long Life with no maintenance
    • High torsional stiffness
    • Constant velocity
    • Zero backlash
    • RoHS3 and REACH Compliant
    • Maximum speed: 10,000 RPM
    • Bore tolerance:
      +.001 in / -.000 in
      +.03mm/–.000mm
    • Temperature Range: -40°F to 200°F

    Material

    • Aluminum hubs are standard
    • Stainless steel hubs available upon request
    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 505-528 of 793

    Set Descending Direction
    1. Ruland BCK26-3/4"-14MM-A, Bellows Coupling
      BCK26-3/4"-14MM-A
      As low as $137.86 $202.20
      Ruland BCK26-3/4"-14MM-A, 3/4" x 14mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    2. Ruland BCK26-3/4"-15MM-A, Bellows Coupling
      BCK26-3/4"-15MM-A
      As low as $137.86 $202.20
      Ruland BCK26-3/4"-15MM-A, 3/4" x 15mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    3. Ruland BCK26-3/4"-16MM-A, Bellows Coupling
      BCK26-3/4"-16MM-A
      As low as $137.86 $202.20
      Ruland BCK26-3/4"-16MM-A, 3/4" x 16mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    4. Ruland BCK26-3/4"-17MM-A, Bellows Coupling
      BCK26-3/4"-17MM-A
      As low as $137.86 $202.20
      Ruland BCK26-3/4"-17MM-A, 3/4" x 17mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    5. Ruland BCK26-3/4"-18MM-A, Bellows Coupling
      BCK26-3/4"-18MM-A
      As low as $137.86 $202.20
      Ruland BCK26-3/4"-18MM-A, 3/4" x 18mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    6. Ruland BCK26-3/4"-19MM-A, Bellows Coupling
      BCK26-3/4"-19MM-A
      As low as $137.86 $202.20
      Ruland BCK26-3/4"-19MM-A, 3/4" x 19mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    7. Ruland BCK26-5/8"-10MM-A, Bellows Coupling
      BCK26-5/8"-10MM-A
      As low as $137.86 $202.20
      Ruland BCK26-5/8"-10MM-A, 5/8" x 10mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    8. Ruland BCK26-5/8"-11MM-A, Bellows Coupling
      BCK26-5/8"-11MM-A
      As low as $137.86 $202.20
      Ruland BCK26-5/8"-11MM-A, 5/8" x 11mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    9. Ruland BCK26-5/8"-12MM-A, Bellows Coupling
      BCK26-5/8"-12MM-A
      As low as $137.86 $202.20
      Ruland BCK26-5/8"-12MM-A, 5/8" x 12mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    10. Ruland BCK26-5/8"-13MM-A, Bellows Coupling
      BCK26-5/8"-13MM-A
      As low as $137.86 $202.20
      Ruland BCK26-5/8"-13MM-A, 5/8" x 13mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    11. Ruland BCK26-5/8"-14MM-A, Bellows Coupling
      BCK26-5/8"-14MM-A
      As low as $137.86 $202.20
      Ruland BCK26-5/8"-14MM-A, 5/8" x 14mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    12. Ruland BCK26-5/8"-15MM-A, Bellows Coupling
      BCK26-5/8"-15MM-A
      As low as $137.86 $202.20
      Ruland BCK26-5/8"-15MM-A, 5/8" x 15mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
      Add to Compare
    13. Ruland BCK32-1"-12MM-A, Bellows Coupling
      BCK32-1"-12MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-12MM-A, 1" x 12mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    14. Ruland BCK32-1"-13MM-A, Bellows Coupling
      BCK32-1"-13MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-13MM-A, 1" x 13mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    15. Ruland BCK32-1"-14MM-A, Bellows Coupling
      BCK32-1"-14MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-14MM-A, 1" x 14mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    16. Ruland BCK32-1"-15MM-A, Bellows Coupling
      BCK32-1"-15MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-15MM-A, 1" x 15mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    17. Ruland BCK32-1"-16MM-A, Bellows Coupling
      BCK32-1"-16MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-16MM-A, 1" x 16mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    18. Ruland BCK32-1"-17MM-A, Bellows Coupling
      BCK32-1"-17MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-17MM-A, 1" x 17mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    19. Ruland BCK32-1"-18MM-A, Bellows Coupling
      BCK32-1"-18MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-18MM-A, 1" x 18mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    20. Ruland BCK32-1"-19MM-A, Bellows Coupling
      BCK32-1"-19MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-19MM-A, 1" x 19mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    21. Ruland BCK32-1"-20MM-A, Bellows Coupling
      BCK32-1"-20MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-20MM-A, 1" x 20mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    22. Ruland BCK32-1"-22MM-A, Bellows Coupling
      BCK32-1"-22MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-22MM-A, 1" x 22mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    23. Ruland BCK32-1"-24MM-A, Bellows Coupling
      BCK32-1"-24MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-24MM-A, 1" x 24mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    24. Ruland BCK32-1"-25MM-A, Bellows Coupling
      BCK32-1"-25MM-A
      As low as $165.82 $243.20
      Ruland BCK32-1"-25MM-A, 1" x 25mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
      Add to Compare
    Page
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    Browse By

    Filter
    Shopping Options
    Bore Type
    Bore (B1)
    1. 0.1250 in 1 item
    2. 0.1875 in 3 items
    3. 0.2500 in 8 items
    4. 0.3125 in 6 items
    5. 0.3750 in 12 items
    6. 0.5000 in 32 items
    7. 0.6250 in 40 items
    8. 0.7500 in 48 items
    9. 0.8750 in 40 items
    10. 1.0000 in 54 items
    11. 1.1250 in 36 items
    12. 1.2500 in 42 items
    13. 1.3750 in 22 items
    14. 1.5000 in 30 items
    15. 1.6250 in 14 items
    16. 1.7500 in 16 items
    17. 4 mm 1 item
    18. 5 mm 3 items
    19. 6 mm 3 items
    20. 7 mm 3 items
    21. 8 mm 9 items
    22. 9 mm 6 items
    23. 10 mm 12 items
    24. 11 mm 12 items
    25. 12 mm 12 items
    26. 13 mm 12 items
    27. 14 mm 14 items
    28. 15 mm 14 items
    29. 16 mm 22 items
    30. 17 mm 14 items
    31. 18 mm 14 items
    32. 19 mm 14 items
    33. 20 mm 22 items
    34. 22 mm 14 items
    35. 24 mm 20 items
    36. 25 mm 20 items
    37. 28 mm 18 items
    38. 30 mm 24 items
    39. 32 mm 30 items
    40. 35 mm 20 items
    41. 38 mm 20 items
    42. 40 mm 10 items
    43. 42 mm 12 items
    44. 45 mm 14 items
    Small Bore (B2)
    1. 0.1250 in 3 items
    2. 0.1875 in 6 items
    3. 0.2500 in 13 items
    4. 0.3125 in 29 items
    5. 0.3750 in 42 items
    6. 0.5000 in 72 items
    7. 0.6250 in 50 items
    8. 0.7500 in 42 items
    9. 0.8750 in 28 items
    10. 1.0000 in 32 items
    11. 1.1250 in 26 items
    12. 1.2500 in 20 items
    13. 1.3750 in 14 items
    14. 1.5000 in 6 items
    15. 1.6250 in 4 items
    16. 1.7500 in 2 items
    17. 3 mm 3 items
    18. 4 mm 5 items
    19. 5 mm 3 items
    20. 6 mm 9 items
    21. 7 mm 6 items
    22. 8 mm 10 items
    23. 9 mm 10 items
    24. 10 mm 12 items
    25. 11 mm 12 items
    26. 12 mm 22 items
    27. 13 mm 14 items
    28. 14 mm 26 items
    29. 15 mm 26 items
    30. 16 mm 18 items
    31. 17 mm 18 items
    32. 18 mm 18 items
    33. 19 mm 18 items
    34. 20 mm 24 items
    35. 22 mm 24 items
    36. 24 mm 18 items
    37. 25 mm 32 items
    38. 28 mm 24 items
    39. 30 mm 18 items
    40. 32 mm 12 items
    41. 35 mm 8 items
    42. 38 mm 8 items
    43. 40 mm 4 items
    44. 42 mm 2 items
    Keyway
    1. No 412 items
    2. Yes 381 items
    Outer Diameter (OD)
    1. 0.590 in (15.0 mm) 12 items
    2. 0.750 in (19.1 mm) 15 items
    3. 1.000 in (25.4 mm) 52 items
    4. 1.313 in (33.3 mm) 72 items
    5. 1.625 in (41.3 mm) 88 items
    6. 2.000 in (50.8 mm) 120 items
    7. 2.250 in (57.2 mm) 182 items
    8. 2.750 in (69.9 mm) 126 items
    9. 3.125 in (79.4 mm) 126 items
    Length (L)
    1. 1.076 in (27.3 mm) 12 items
    2. 1.306 in (33.2 mm) 15 items
    3. 1.345 in (34.2 mm) 52 items
    4. 1.700 in (43.2 mm) 72 items
    5. 2.035 in (51.7 mm) 88 items
    6. 2.413 in (61.3 mm) 120 items
    7. 3.235 in (82.2 mm) 182 items
    8. 3.431 in (87.1 mm) 63 items
    9. 3.439 in (87.4 mm) 63 items
    10. 3.808 in (96.7 mm) 63 items
    11. 3.816 in (96.9 mm) 63 items
    Static Torque
    1. 22 lb-in (2.5 Nm) 12 items
    2. 40 lb-in (4.5 Nm) 15 items
    3. 60 lb-in (6.8 Nm) 52 items
    4. 120 lb-in (13.6 Nm) 72 items
    5. 250 lb-in (28.0 Nm) 88 items
    6. 400 lb-in (45.2 Nm) 120 items
    7. 530 lb-in (60.00 Nm) 182 items
    8. 925 lb-in (104.5 Nm) 126 items
    9. 1350 lb-in (152 Nm) 126 items
    Angular Misalignment
    1. 1.5° 151 items
    2. 2.0° 642 items
    Parallel Misalignment
    1. 0.004 in (0.10 mm) 79 items
    2. 0.006 in (0.15 mm) 72 items
    3. 0.010 in (0.25 mm) 208 items
    4. 0.012 in (0.30 mm) 434 items
    Axial Motion
    1. 0.008 in (0.20 mm) 12 items
    2. 0.010 in (0.25 mm) 15 items
    3. 0.012 in (0.30 mm) 52 items
    4. 0.016 in (0.40 mm) 72 items
    5. 0.020 in (0.51 mm) 208 items
    6. 0.030 in (0.76 mm) 434 items
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