Ruland Aluminium Zero Backlash Jaw Coupling Hub, 50.8 mm OD, 61 mm Length, Elastomer Element MJC51-25-A

Ruland MJC51-25-A is a precision-engineered aluminium zero backlash jaw coupling hub designed for reliable mechanical power transmission in industrial, manufacturing, and fluid power applications. This flexible coupling offers a three-piece design composed of two aluminium hubs and an elastomeric spider element that minimizes vibration and mechanical backlash while providing torsional flexibility.

With an outside diameter of 50.8 mm, length of 61 mm, and a 25 mm bore, the MJC51-25-A is optimized for compact spaces and efficient torque transmission up to 9.5 Nm at speeds up to 8,000 RPM. The clamp style mounting ensures secure shaft connection, accommodating various shaft types with ease.

Its elastomeric element allows for torque absorption and misalignment compensation, making it suitable for applications in industrial machinery, conveyors, robotics, HVAC systems, and agricultural equipment. The zero backlash jaw type reduces vibration and maintains precision motion control, essential for sensitive or high-speed equipment.

The coupling is constructed utilizing metric M5 hardware that meets DIN 912 12.9 strength standards, ensuring durable and safe installation. It complies with RoHS2 and REACH directives, confirming environmental and safety compliance.

This product is manufactured under strict quality controls in Ruland's Marlborough, Massachusetts factory, sourcing bar stock from North American mills. It is suitable for operating environments ranging from -10°F to 180°F, providing broad application use across diverse industrial sectors.

Constructed from durable aluminium hubs with an elastomer spider element for flexibility. Features a zero backlash jaw type design that reduces vibration and mechanical play. Measures 50.8 mm outside diameter with a 61 mm overall length ensuring compact coupling.

Rated for torque up to 9.5 Nm with clamp-style mounting allowing secure shaft attachment. Suitable for operating temperatures from -10°F to 180°F, ensuring versatile industrial use. Compatible with metric hardware and meets RoHS2, DIN 912 12.9, and REACH standards.

Machine screws are M5 size, included for assembly per specification. Manufactured exclusively in the United States under controlled proprietary processes. Ideal for applications in industrial machinery, robotics, fluid power systems, and mechanical power transmission.

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