Ruland MBC41-20-20-A Bellows Clamp Coupling 20 mm Bore
Dimensions
| Bore Dia. | 20mm x 20mm |
| Outside Dia. | 41 mm |
| Overall Length | 50.8 mm |
| Screw Size (mm) | M4 |
| Length through Bore (mm) | 25.50 |
| Clearance Dia. (mm) | 41.0 |
| Overall Length (mm) | 51 |
| Screw Size | M4 |
| Outside Dia. (mm) | 41 |
| Length through Bore | 25.5 mm |
| Hub Dia. | 41 mm |
| Length Through Bore 1 | 24 mm |
| Minimum Bore Diameter | 20 mm |
| Different Bore Sizes | No |
| Length Through Bore 2 | 24 mm |
| Screw Thread Size | M4 |
| Bore Diameter 2 | 20 mm |
| Coupling Outside Diameter | 41.3 mm |
| Bore Diameter 1 | 20 mm |
| Maximum Bore Diameter | 20 mm |
| Hub Length | 18.05 mm |
Details
| Item | Motion Control Coupling |
| Shaft Locking Type – Couplings | 1 Piece Clamp |
| System of Measurement | Metric |
| Material – Couplings | Aluminum |
| Finish | Anodized Aluminum |
| Rated Torque | 250 in-lb |
| Max. Axial Misalignment (In.) | +/-0.020 |
| Torque (In.-Lbs.) | 250 |
| Max. Temp. Range (F) | 200 |
| Material | Aluminum |
| Item – Motion Control Couplings | Motion Control Coupling |
| Torsional Stiffness (Deg./In.-Lbs.) | 0.002 |
| Style | Bellows Clamp |
| Max. Angular Misalignment | 2 Degrees |
| Max. Temp. | 200 Degrees F |
| Max. RPM | 10,000 RPM |
| Screw Type | Cap Screw |
| Max. Parallel Misalignment (In.) | 0.01 in |
| Application | Encoders, Stepper / Servo |
| Standards | Conflict Minerals Compliant, DIN 912 12.9 Screws, ISO 9001:2015, REACH Compliant, RoHS3 Compliant |
| Bore Tolerance | +0.03 mm / -0.00 mm |
| Screw Material | Alloy Steel |
| Features | Balanced Design for Reduced Vibration, Lightweight and has Low Inertia, Zero Backlash |
| Minimum Operating Temperature | -40 Degrees C |
| Fastener Tightening Torque | 4.6 N-m |
| Maximum Speed | 10,000 RPM |
| Bellows Material | Stainless Steel |
| Maximum Torque | 28 N-m |
| Number of Locking Screws | 2 |
| Dynamic Torque Reversing | 7 N-m |
| Hub Material Grade | 2024 |
| Maximum Operating Temperature | 93 Degrees C |
| Bore Type | Round |
| Moment of Inertia | 0.000030763 kgf/m sq |
| Parallel Misalignment | 0.25 mm |
| Angular Misalignment | 2 Degrees |
| Zero Backlash | Yes |
| Screw Material Finish | Black Oxide |
| Bellows Material Grade | 321 |
| Torsional Stiffness | 63 N-m/Deg |
| Included Screws | (2) Hex Socket Cap Screw |
| Hub Material Finish | Sulfuric Anodized |
| Bellows Material Finish | None |
| Dynamic Torque Non-Reversing | 14 N-m |
| Shaft Tolerance | +0.000 mm / -0.013 mm |
| Shaft Locking Type | Clamp On |
| Hub Material | Aluminum |
| For Misalignment Type | Angular, Axial, Parallel |
| Axial Motion | 0.5 mm |
| Full Bearing Support Required | Yes |
Ruland MBC41-20-20-A Bellows Clamp Coupling 20 mm Bore
Ruland bellows couplings are zero-backlash, torsionally stiff, and have a balanced design. They are made from black anodized aluminum hubs and stainless steel bellows to offer superior performance in precision servo applications. The stainless steel bellows are ideal for transmitting torque due to their thin walls allowing the coupling to easily flex while remaining rigid under torsional loads. Bellows couplings can accommodate all forms of misalignment – angular, parallel, and axial motion.
Combining aluminum hubs with stainless steel bellows results in a lightweight, low inertia coupling that is well suited for precision applications found in a variety of industries including semiconductor, solar, printing, packaging, and machine tools.
Bellows couplings have no moving parts ensuring a long maintenance-free life.
Ruland uses a balanced design to reduce vibration in high RPM applications of up to 10,000 PRM.
Ruland bellows couplings are carefully made from select bar stock sourced exclusively from North American mills and are machined to a fine burr-free finish.
Hardware tests beyond DIN 912 12.9 standards for maximum torqueing capabilities. Ruland, founded in 1937, manufactures all products in our Marlborough, MA USA factory under strict controls using proprietary processes.
Bellows couplings are RoHS2 and REACH compliant.
Ruland MBC41-20-20-A Bellows Clamp Coupling 20 mm Bore
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