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    Keyed Bellows Couplings: Clamp Style, Metric

    Clamp style bellows couplings with metric dimensions and bores with keyways. Keyed bores are available from 7mm to 25mm.

    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: +.03mm/-.00mm
    • Temperature Range: -40°C to 93 °C
    Line DrawingLine Drawing

    How to Specify

    Part numbers are in the following format with numbers representing millimeters:

    Part Number Identification

    Products

    View as Grid Table

    Items 1-24 of 397

    Set Descending Direction
    1. Ruland MBCK25-10-10-A, Bellows Coupling
      MBCK25-10-10-A
      As low as $106.35 $155.98
      Ruland MBCK25-10-10-A, 10mm x 10mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    2. Ruland MBCK25-10-6-A, Bellows Coupling
      MBCK25-10-6-A
      As low as $106.35 $155.98
      Ruland MBCK25-10-6-A, 10mm x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    3. Ruland MBCK25-10-7-A, Bellows Coupling
      MBCK25-10-7-A
      As low as $106.35 $155.98
      Ruland MBCK25-10-7-A, 10mm x 7mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    4. Ruland MBCK25-10-8-A, Bellows Coupling
      MBCK25-10-8-A
      As low as $106.35 $155.98
      Ruland MBCK25-10-8-A, 10mm x 8mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    5. Ruland MBCK25-10-9-A, Bellows Coupling
      MBCK25-10-9-A
      As low as $106.35 $155.98
      Ruland MBCK25-10-9-A, 10mm x 9mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    6. Ruland MBCK25-11-10-A, Bellows Coupling
      MBCK25-11-10-A
      As low as $106.35 $155.98
      Ruland MBCK25-11-10-A, 11mm x 10mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    7. Ruland MBCK25-11-11-A, Bellows Coupling
      MBCK25-11-11-A
      As low as $106.35 $155.98
      Ruland MBCK25-11-11-A, 11mm x 11mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    8. Ruland MBCK25-11-6-A, Bellows Coupling
      MBCK25-11-6-A
      As low as $106.35 $155.98
      Ruland MBCK25-11-6-A, 11mm x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    9. Ruland MBCK25-11-7-A, Bellows Coupling
      MBCK25-11-7-A
      As low as $106.35 $155.98
      Ruland MBCK25-11-7-A, 11mm x 7mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    10. Ruland MBCK25-11-8-A, Bellows Coupling
      MBCK25-11-8-A
      As low as $106.35 $155.98
      Ruland MBCK25-11-8-A, 11mm x 8mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    11. Ruland MBCK25-11-9-A, Bellows Coupling
      MBCK25-11-9-A
      As low as $106.35 $155.98
      Ruland MBCK25-11-9-A, 11mm x 9mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    12. Ruland MBCK25-12-10-A, Bellows Coupling
      MBCK25-12-10-A
      As low as $106.35 $155.98
      Ruland MBCK25-12-10-A, 12mm x 10mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    13. Ruland MBCK25-12-11-A, Bellows Coupling
      MBCK25-12-11-A
      As low as $106.35 $155.98
      Ruland MBCK25-12-11-A, 12mm x 11mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    14. Ruland MBCK25-12-12-A, Bellows Coupling
      MBCK25-12-12-A
      As low as $106.35 $155.98
      Ruland MBCK25-12-12-A, 12mm x 12mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    15. Ruland MBCK25-12-6-A, Bellows Coupling
      MBCK25-12-6-A
      As low as $106.35 $155.98
      Ruland MBCK25-12-6-A, 12mm x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    16. Ruland MBCK25-12-7-A, Bellows Coupling
      MBCK25-12-7-A
      As low as $106.35 $155.98
      Ruland MBCK25-12-7-A, 12mm x 7mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    17. Ruland MBCK25-12-8-A, Bellows Coupling
      MBCK25-12-8-A
      As low as $106.35 $155.98
      Ruland MBCK25-12-8-A, 12mm x 8mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    18. Ruland MBCK25-12-9-A, Bellows Coupling
      MBCK25-12-9-A
      As low as $106.35 $155.98
      Ruland MBCK25-12-9-A, 12mm x 9mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    19. Ruland MBCK25-7-6-A, Bellows Coupling
      MBCK25-7-6-A
      As low as $106.35 $155.98
      Ruland MBCK25-7-6-A, 7mm x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    20. Ruland MBCK25-7-7-A, Bellows Coupling
      MBCK25-7-7-A
      As low as $106.35 $155.98
      Ruland MBCK25-7-7-A, 7mm x 7mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    21. Ruland MBCK25-8-6-A, Bellows Coupling
      MBCK25-8-6-A
      As low as $106.35 $155.98
      Ruland MBCK25-8-6-A, 8mm x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    22. Ruland MBCK25-8-7-A, Bellows Coupling
      MBCK25-8-7-A
      As low as $106.35 $155.98
      Ruland MBCK25-8-7-A, 8mm x 7mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    23. Ruland MBCK25-8-8-A, Bellows Coupling
      MBCK25-8-8-A
      As low as $106.35 $155.98
      Ruland MBCK25-8-8-A, 8mm x 8mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
    24. Ruland MBCK25-9-6-A, Bellows Coupling
      MBCK25-9-6-A
      As low as $106.35 $155.98
      Ruland MBCK25-9-6-A, 9mm x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 25.4mm, OD 34.2mm Length
      Add to Compare
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    Shopping Options
    Bore (B1)
    1. 7 mm 2 items
    2. 8 mm 4 items
    3. 9 mm 6 items
    4. 10 mm 9 items
    5. 11 mm 12 items
    6. 12 mm 16 items
    7. 13 mm 12 items
    8. 14 mm 16 items
    9. 15 mm 20 items
    10. 16 mm 24 items
    11. 17 mm 18 items
    12. 18 mm 21 items
    13. 19 mm 24 items
    14. 20 mm 28 items
    15. 22 mm 20 items
    16. 24 mm 23 items
    17. 25 mm 27 items
    18. 28 mm 18 items
    19. 30 mm 21 items
    20. 32 mm 24 items
    21. 35 mm 13 items
    22. 38 mm 15 items
    23. 40 mm 7 items
    24. 42 mm 8 items
    25. 45 mm 9 items
    Small Bore (B2)
    1. 6 mm 6 items
    2. 7 mm 6 items
    3. 8 mm 14 items
    4. 9 mm 12 items
    5. 10 mm 21 items
    6. 11 mm 18 items
    7. 12 mm 27 items
    8. 13 mm 23 items
    9. 14 mm 33 items
    10. 15 mm 29 items
    11. 16 mm 25 items
    12. 17 mm 21 items
    13. 18 mm 18 items
    14. 19 mm 15 items
    15. 20 mm 21 items
    16. 22 mm 17 items
    17. 24 mm 14 items
    18. 25 mm 20 items
    19. 28 mm 16 items
    20. 30 mm 13 items
    21. 32 mm 10 items
    22. 35 mm 7 items
    23. 38 mm 5 items
    24. 40 mm 3 items
    25. 42 mm 2 items
    26. 45 mm 1 item
    Outer Diameter (OD)
    1. 1.000 in (25.4 mm) 27 items
    2. 1.313 in (33.3 mm) 45 items
    3. 1.625 in (41.3 mm) 66 items
    4. 2.000 in (50.8 mm) 78 items
    5. 2.250 in (57.2 mm) 91 items
    6. 2.750 in (69.9 mm) 45 items
    7. 3.125 in (79.4 mm) 45 items
    Length (L)
    1. 1.345 in (34.2 mm) 27 items
    2. 1.700 in (43.2 mm) 45 items
    3. 2.035 in (51.7 mm) 66 items
    4. 2.413 in (61.3 mm) 78 items
    5. 3.235 in (82.2 mm) 91 items
    6. 3.439 in (87.4 mm) 45 items
    7. 3.808 in (96.7 mm) 45 items
    Static Torque
    1. 6.8 Nm 27 items
    2. 13.6 Nm 45 items
    3. 28.0 Nm 66 items
    4. 45.2 Nm 78 items
    5. 60.00 Nm 91 items
    6. 104.5 Nm 45 items
    7. 152 Nm 45 items
    Angular Misalignment
    1. 1.5° 72 items
    2. 2.0° 325 items
    Parallel Misalignment
    1. 0.10 mm 27 items
    2. 0.15 mm 45 items
    3. 0.25 mm 144 items
    4. 0.30 mm 181 items
    Axial Motion
    1. 0.30 mm 27 items
    2. 0.40 mm 45 items
    3. 0.50 mm 144 items
    4. 0.75 mm 91 items
    5. 0.76 mm 90 items
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