Ruland Flexible Coupler Clamp Style Aluminium Hub Stainless Steel Bellows 50.8 mm OD 20 mm Bore 58.7 mm Length MBC51-20-20-A

Ruland MBC51-20-20-A flexible coupler features a precision bellows design combining two anodized aluminium hubs connected by stainless steel bellows. This coupling offers excellent kinematic properties with zero backlash, enhancing torque transmission in light-duty mechanical power transmission systems.

The clamp style fastening provides secure and easily adjustable installation. The coupler has a 50.8 mm outer diameter (OD), 20 mm bore sizes on both hubs, and a total length of 58.7 mm, making it compact and versatile for various machinery setups.

This coupling accommodates angular misalignment up to 2°, parallel misalignment of 0.25 mm, and axial movement of 0.5 mm, thus reducing mechanical stress on connected equipment. It operates reliably within a temperature range from -40°C to 93°C and supports speeds up to 10,000 rpm, suitable for applications in stepper and servo drives, encoders, and other precision mechanical transmissions.

Its balanced design reduces vibrations at high speeds, enhancing the longevity and performance of machines. The use of black-oiled alloy steel fasteners ensures strength and corrosion resistance, and the product meets relevant industrial standards including REACH, RoHS3, and DIN 912 12.9.

Constructed with anodized aluminium hubs for lightweight durability. Equipped with stainless steel bellows providing torsional rigidity with flexibility. Clamp style fastening ensures secure mounting and easy installation.

Supports maximum speed of 10,000 rpm, suitable for high-speed applications. Torque rating of 45.2 Nm for light-duty power transmission. Low moment of inertia optimizes dynamic response with value of 80.472 x 10-6 kg/m². Accommodates misalignments: angular 2°, parallel 0.25 mm, axial 0.5 mm.

Operates effectively between -40°C and 93°C temperature range. Complies with REACH, RoHS3, and DIN 912 12.9 standards for quality and safety. Metric hardware with M5 screw size for robust fastening.

This Flexible Coupler is ideal for industrial, laboratory, manufacturing, and light machinery applications requiring precise torque transfer with compensation for shaft misalignments. Widely used in automation systems including stepper and servo motor drives and encoders.

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