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