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    Bellows Couplings for Automation & Linear Motion

    Ruland bellows couplings are made of two lightweight anodized aluminum hubs joined by a flexible stainless steel bellows. The thin walls of the bellows allow the coupling to flex under misalignment while remaining rigid under torsional loads. Engineers designing precision linear systems often prefer to use bellows couplings because they are lightweight, accommodate all forms of misalignment, and have the greatest size-for-size torque and torsional stiffness of any Ruland flexible coupling.

    Ruland manufactures bellows couplings with a low inertia, zero-backlash design, making them a suitable option for high torque applications where a rigid coupling is not feasible due to weight or misalignment requirements. They are available in clamp and set screw hubs with or without keyways in bore sizes ranging from 1/8” to 1” and 3mm to 25mm.

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    1. Ruland BCK16-1/2"-10MM-A, Bellows Coupling
      BCK16-1/2"-10MM-A
      As low as $104.27 $152.92
      Ruland BCK16-1/2"-10MM-A, 1/2" x 10mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    2. Ruland BCK16-1/2"-11MM-A, Bellows Coupling
      BCK16-1/2"-11MM-A
      As low as $104.27 $152.92
      Ruland BCK16-1/2"-11MM-A, 1/2" x 11mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    3. Ruland BCK16-1/2"-12MM-A, Bellows Coupling
      BCK16-1/2"-12MM-A
      As low as $104.27 $152.92
      Ruland BCK16-1/2"-12MM-A, 1/2" x 12mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    4. Ruland BCK16-1/2"-6MM-A, Bellows Coupling
      BCK16-1/2"-6MM-A
      As low as $104.27 $152.92
      Ruland BCK16-1/2"-6MM-A, 1/2" x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    5. Ruland BCK16-1/2"-7MM-A, Bellows Coupling
      BCK16-1/2"-7MM-A
      As low as $104.27 $152.92
      Ruland BCK16-1/2"-7MM-A, 1/2" x 7mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    6. Ruland BCK16-1/2"-8MM-A, Bellows Coupling
      BCK16-1/2"-8MM-A
      As low as $104.27 $152.92
      Ruland BCK16-1/2"-8MM-A, 1/2" x 8mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    7. Ruland BCK16-1/2"-9MM-A, Bellows Coupling
      BCK16-1/2"-9MM-A
      As low as $104.27 $152.92
      Ruland BCK16-1/2"-9MM-A, 1/2" x 9mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    8. Ruland BCK16-10MM-1/4"-A, Bellows Coupling
      BCK16-10MM-1/4"-A
      As low as $104.27 $152.92
      Ruland BCK16-10MM-1/4"-A, 10mm x 1/4" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    9. Ruland BCK16-10MM-3/8"-A, Bellows Coupling
      BCK16-10MM-3/8"-A
      As low as $104.27 $152.92
      Ruland BCK16-10MM-3/8"-A, 10mm x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    10. Ruland BCK16-10MM-5/16"-A, Bellows Coupling
      BCK16-10MM-5/16"-A
      As low as $104.27 $152.92
      Ruland BCK16-10MM-5/16"-A, 10mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    11. Ruland BCK16-11MM-1/4"-A, Bellows Coupling
      BCK16-11MM-1/4"-A
      As low as $104.27 $152.92
      Ruland BCK16-11MM-1/4"-A, 11mm x 1/4" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    12. Ruland BCK16-11MM-3/8"-A, Bellows Coupling
      BCK16-11MM-3/8"-A
      As low as $104.27 $152.92
      Ruland BCK16-11MM-3/8"-A, 11mm x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    13. Ruland BCK16-11MM-5/16"-A, Bellows Coupling
      BCK16-11MM-5/16"-A
      As low as $104.27 $152.92
      Ruland BCK16-11MM-5/16"-A, 11mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    14. Ruland BCK16-12MM-1/4"-A, Bellows Coupling
      BCK16-12MM-1/4"-A
      As low as $104.27 $152.92
      Ruland BCK16-12MM-1/4"-A, 12mm x 1/4" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    15. Ruland BCK16-12MM-3/8"-A, Bellows Coupling
      BCK16-12MM-3/8"-A
      As low as $104.27 $152.92
      Ruland BCK16-12MM-3/8"-A, 12mm x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    16. Ruland BCK16-12MM-5/16"-A, Bellows Coupling
      BCK16-12MM-5/16"-A
      As low as $104.27 $152.92
      Ruland BCK16-12MM-5/16"-A, 12mm x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    17. Ruland BCK16-3/8"-6MM-A, Bellows Coupling
      BCK16-3/8"-6MM-A
      As low as $104.27 $152.92
      Ruland BCK16-3/8"-6MM-A, 3/8" x 6mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    18. Ruland BCK16-3/8"-7MM-A, Bellows Coupling
      BCK16-3/8"-7MM-A
      As low as $104.27 $152.92
      Ruland BCK16-3/8"-7MM-A, 3/8" x 7mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    19. Ruland BCK16-3/8"-8MM-A, Bellows Coupling
      BCK16-3/8"-8MM-A
      As low as $104.27 $152.92
      Ruland BCK16-3/8"-8MM-A, 3/8" x 8mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    20. Ruland BCK16-3/8"-9MM-A, Bellows Coupling
      BCK16-3/8"-9MM-A
      As low as $104.27 $152.92
      Ruland BCK16-3/8"-9MM-A, 3/8" x 9mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
      Add to Compare
    21. Ruland BCK16-6-4-A, Bellows Coupling
      BCK16-6-4-A
      As low as $104.27 $152.92
      Ruland BCK16-6-4-A, 3/8" x 1/4" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000", OD 1.345" Length
      Add to Compare
    22. Ruland BCK16-6-5-A, Bellows Coupling
      BCK16-6-5-A
      As low as $104.27 $152.92
      Ruland BCK16-6-5-A, 3/8" x 5/16" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000", OD 1.345" Length
      Add to Compare
    23. Ruland BCK16-6-6-A, Bellows Coupling
      BCK16-6-6-A
      As low as $104.27 $152.92
      Ruland BCK16-6-6-A, 3/8" x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.000", OD 1.345" Length
      Add to Compare
    24. Ruland BCK16-8-4-A, Bellows Coupling
      BCK16-8-4-A
      As low as $104.27 $152.92
      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
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    11. 34.2 mm 27 items
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    13. 51.7 mm 66 items
    14. 61.3 mm 78 items
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    Static Torque
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