Ruland Flexible Coupler 19.1 mm Outside Diameter 8 mm Bore 27.2 mm Length Aluminium MJS19-8-A

Ruland MJS19-8-A flexible coupler is a precision-engineered mechanical power transmission component designed for industrial machinery requiring reliable torque transmission and vibration damping. Featuring aluminium construction, it combines lightweight design with mechanical strength, suitable for various power transmission setups.

This coupling features a 19.1 mm outside diameter with an 8 mm finished bore without a keyway, providing ease of installation and compatibility with shafts of matching size. The 27.2 mm length dimension allows integration into compact assemblies.

Constructed as a three-piece zero backlash curved jaw coupling, the assembly consists of two aluminium hubs and an elastic polyurethane spider insert. The spider absorbs impulse loads, reducing shock to motors and sensitive equipment, making it ideal for applications with medium torsional rigidity and strength requirements.

The design is electrically isolating, balanced for high bearing loads, and accommodates slight angular, axial, and parallel misalignments, enhancing the coupling's operational reliability in dynamic environments. The maximum recommended speed is 8000 rpm.

A fail-safe design allows the coupling to continue functioning even if the spider element fails, improving system safety and reducing downtime. Users must purchase two hubs and a torque disc separately to build a complete coupling assembly, as only one hub is supplied per unit.

Made from aluminium for corrosion resistance and durability. Max speed: 8000 rpm suitable for high-speed mechanical applications. Polyurethane spider provides effective vibration damping and load absorption. Zero backlash curved jaw design reduces torsional vibrations.

Electrical isolation prevents galvanic corrosion between shafts. Supports slight misalignments to protect connected equipment. Fail-safe feature ensures continuous operation even on spider failure. Each sold hub requires matching components to complete assembly.

This flexible coupler is widely applicable in industrial, manufacturing, mechanical, and power transmission systems. It is suited for use in machines requiring precise torque transfer with vibration damping capabilities. The part is manufactured in the United States and complies with REACH, DIN 91 1.9, and RoHS standards ensuring quality and regulatory compliance.

Explore more from the Ruland range in the Mechanical Power Transmission Couplers category on EnvMart for industrial equipment solutions.