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Ruland BC26-12-12-A RULBC26-12-12A

Ruland BC26-12-12-A High-Stiffness Bellows Coupling, 3/4 in x 3/4 in Bore

  • Manufacturer: Ruland Manufacturing Co., Inc.
  • Brand Name: Ruland
  • Part Number: RULBC26-12-12A
  • MPN: BC26-12-12-A
  • UPC: 634529062852
  • Min. Order Qty: 1
  • Qty. Interval: 1
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Choose the Ruland BC26-12-12-A high-stiffness bellows coupling for precise, zero-backlash shaft connection in servo, encoder and positioning applications. The 3/4 in x 3/4 in clamp-style coupling combines lightweight 2024-T351 aluminum hubs with an AISI 321 stainless steel bellows, delivering 550 lb-in/deg torsional stiffness, 250 lb-in static torque and balanced operation up to 10,000 RPM. Its flexible bellows accommodates angular, parallel and axial misalignment while maintaining constant-velocity transmission.

Ruland BC26-12-12-A is a clamp-style, zero-backlash high-stiffness bellows coupling for precision motion-control applications. Its balanced design combines 2024-T351 aluminum hubs with an AISI 321 stainless steel bellows to provide low inertia, high torsional stiffness and controlled accommodation of shaft misalignment at speeds up to 10,000 RPM.


Specs: 0.7500 in x 0.7500 in bores; 1.625 in outside diameter; 2.035 in overall length; 250 lb-in static torque; 550 lb-in/deg torsional stiffness; 2.0° angular misalignment; 0.010 in parallel misalignment; 0.020 in axial motion; -40°F to 200°F temperature range; M4 clamp screws; black anodized hubs; 0.2583 lb weight; UPC 634529062852.

Bore Diameter      :      0.7500 x 0.7500 in
Dimensions      :      1.625 in OD x 2.035 in L
Finish      :      Black anodized; MIL-A-8625 Type II Class 2; ASTM B580 Type B
Hub Type      :      Clamp Style
Length Through Bore      :      0.946 in
Material      :      2024-T351 aluminum hubs; AISI 321 stainless steel bellows
Maximum Speed      :      10000 rpm
Outside Diameter      :      1.625 in
Overall Length      :      2.035 in
Series      :      BC
Shaft Connection      :      Clamp-On
Temperature Rating      :      -40 to 200 deg F
Torque Rating      :      250 lb-in
Type      :      High-Stiffness Bellows Coupling
  • High-stiffness bellows coupling with 0.7500 in x 0.7500 in bores
  • Zero-backlash, balanced design for precision motion control
  • Rated for up to 10,000 RPM with 250 lb-in static torque
  • 550 lb-in/deg torsional stiffness for accurate positioning
  • Accommodates 2.0° angular, 0.010 in parallel and 0.020 in axial misalignment
  • 2024-T351 aluminum hubs with AISI 321 stainless steel bellows
  • Black anodized hubs; operating temperature range of -40°F to 200°F
  • RoHS3 and REACH compliant; manufactured in the USA