Ruland MJC33-9-A 2024 or 7075 Aluminum Jaw Coupling Hub, Clamp Style, 9 mm Bore, 33.3 mm OD

Ruland zero-backlash jaw couplings are highly customizable, have a balanced design, and have low inertia. They have excellent dampening characteristics and are well suited for precision servo applications in a wide variety of industries including optical inspection, semiconductor, solar, medical, and packaging.

This jaw coupling hub is manufactured from 2024 aluminum for lightweight and low inertia. To make a complete coupling you must select two hubs and a spider insert.

Zero-backlash jaw couplings are highly customizable allowing the user to easily combine clamp or set screw hubs with inch, metric, keyed, and keyless bores. The performance of the coupling is determined by the spider which is available in three durometers 85 Shore A for greatest dampening, 92 Shore A for balance of dampening and torsional stiffness, and 98 Shore A for some dampening and the highest torsional stiffness. Ruland manufactures jaw couplings with a proprietary hub machining process to produce a curved jaw profile. This concentrates the forces to the center of the spider’s limbs, improving the effectiveness of the elastomer material.

Ruland zero-backlash jaw 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. Jaw couplings are RoHS2 and REACH compliant.