Ruland Flexible Coupler 33.3 mm OD, 12 mm Bore, 44.5 mm Length Aluminium Jaw Coupling MJS33-12-A

Ruland MJS33-12-A is a high-quality flexible jaw coupling designed for mechanical power transmission in industrial and manufacturing settings. It features an outside diameter of 33.3 mm, a bore diameter of 12 mm, and a length of 44.5 mm, manufactured from durable aluminium to provide corrosion resistance and lightweight performance.

This coupling is constructed as a three-piece assembly comprising two aluminium hubs and an elastic polyurethane spider insert (spider sold separately). The spider damps impulse loads and reduces shocks to motors and sensitive machinery components, minimizing wear and extending equipment lifetime.

The jaw coupling offers zero backlash and excellent torsional rigidity with its snap fit spider design. It can accommodate small angular, axial, and parallel misalignments, making it ideal for moderate inertia drive applications with high bearing loads. Rated for maximum speeds up to 8000 rpm, it ensures reliable and efficient torque transmission.

This product is compliant with REACH, RoHS, and DIN 91 1.9 standards, guaranteeing environmental and safety adherence. The bore is finished with no keyway, and the set screw style hub allows secure mounting to shafts.

Note that this listing includes a single aluminium hub only. To complete a full coupling assembly, two hubs and one polyurethane spider torque disc are required and are sold separately. Choose a 92 Shore spider for optimal dampening or a 98 Shore spider for enhanced torsional rigidity, depending on your application requirements.

Constructed from lightweight aluminium for corrosion resistance. Designed as a jaw coupling with zero backlash. Accommodates slight angular, axial, and parallel misalignments. Maximum operating speed of 8000 rpm. Set screw style with finished bore and no keyway.

Electric isolation provided by polyurethane spider element. Snap fit spider enables high torque and dampened impulse loads. Balanced design suited for high bearing loads and moderate inertia. Complies with REACH, RoHS, and DIN 91 1.9 standards.

Only one aluminium hub supplied per order; two hubs and spider required for complete coupling.

This coupling set is widely used in industrial machinery, mechanical power transmission systems, fluid power equipment, manufacturing automation, and HVAC drive assemblies. The robust aluminium hub construction and flexible spider insert combine to provide durability, reliability, and protection of sensitive components from impulsive shocks and vibrations.

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