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Bellows Couplings for Motors

Bellows couplings are zero-backlash and constructed of two anodized aluminum hubs and a stainless steel bellows that serves as the flexible element. This design results in a low inertia zero-backlash coupling that is a good choice for motors coupled to ball screw driven actuators in precision applications. The thin walls of the bellows allow the coupling to flex under misalignment conditions and remain rigid under torsional loads. Bellows couplings have the highest size-for-size torque and torsional stiffness of all Ruland flexible couplings and are preferred in applications where the highest level of accuracy and responsiveness is required.

Ruland bellows coupling have a balanced design for reduced vibration at speeds up to 10,000 RPM. Bore sizes are available from 1/8” to 1” and 3mm to 25mm and hubs are manufactured in clamp and set screw styles with and without keyways.

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15 Items

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  1. Ruland BC12-1/4"-4MM-A, Bellows Coupling
    BC12-1/4"-4MM-A
    As low as $79.05 $115.94
    Ruland BC12-1/4"-4MM-A, 1/4" x 4mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  2. Ruland BC12-1/4"-5MM-A, Bellows Coupling
    BC12-1/4"-5MM-A
    As low as $79.05 $115.94
    Ruland BC12-1/4"-5MM-A, 1/4" x 5mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  3. Ruland BC12-1/4"-6MM-A, Bellows Coupling
    BC12-1/4"-6MM-A
    As low as $79.05 $115.94
    Ruland BC12-1/4"-6MM-A, 1/4" x 6mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  4. Ruland BC12-3/16"-4MM-A, Bellows Coupling
    BC12-3/16"-4MM-A
    As low as $79.05 $115.94
    Ruland BC12-3/16"-4MM-A, 3/16" x 4mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  5. Ruland BC12-5/16"-4MM-A, Bellows Coupling
    BC12-5/16"-4MM-A
    As low as $79.05 $115.94
    Ruland BC12-5/16"-4MM-A, 5/16" x 4mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  6. Ruland BC12-5/16"-5MM-A, Bellows Coupling
    BC12-5/16"-5MM-A
    As low as $79.05 $115.94
    Ruland BC12-5/16"-5MM-A, 5/16" x 5mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  7. Ruland BC12-5/16"-6MM-A, Bellows Coupling
    BC12-5/16"-6MM-A
    As low as $79.05 $115.94
    Ruland BC12-5/16"-6MM-A, 5/16" x 6mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  8. Ruland BC12-5/16"-7MM-A, Bellows Coupling
    BC12-5/16"-7MM-A
    As low as $79.05 $115.94
    Ruland BC12-5/16"-7MM-A, 5/16" x 7mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  9. Ruland BC12-5MM-3/16"-A, Bellows Coupling
    BC12-5MM-3/16"-A
    As low as $79.05 $115.94
    Ruland BC12-5MM-3/16"-A, 5mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  10. Ruland BC12-6MM-3/16"-A, Bellows Coupling
    BC12-6MM-3/16"-A
    As low as $79.05 $115.94
    Ruland BC12-6MM-3/16"-A, 6mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  11. Ruland BC12-7MM-1/4"-A, Bellows Coupling
    BC12-7MM-1/4"-A
    As low as $79.05 $115.94
    Ruland BC12-7MM-1/4"-A, 7mm x 1/4" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  12. Ruland BC12-7MM-3/16"-A, Bellows Coupling
    BC12-7MM-3/16"-A
    As low as $79.05 $115.94
    Ruland BC12-7MM-3/16"-A, 7mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  13. Ruland BC12-8MM-1/4"-A, Bellows Coupling
    BC12-8MM-1/4"-A
    As low as $79.05 $115.94
    Ruland BC12-8MM-1/4"-A, 8mm x 1/4" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  14. Ruland BC12-8MM-3/16"-A, Bellows Coupling
    BC12-8MM-3/16"-A
    As low as $79.05 $115.94
    Ruland BC12-8MM-3/16"-A, 8mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
  15. Ruland BC12-8MM-5/16"-A, Bellows Coupling
    BC12-8MM-5/16"-A
    As low as $79.05 $115.94
    Ruland BC12-8MM-5/16"-A, 8mm x 5/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
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