Ruland Aluminium Flexible Shaft Coupler 19.1 mm OD, 22.9 mm Length, 4 mm Bore, Screw Style PSMR19-4-4-A

Ruland PSMR19-4-4-A Aluminium Flexible Shaft Coupler features a 19.1 mm outside diameter and 22.9 mm length with 4 mm bore size for both bores A and B. Constructed from robust aluminium, this one-piece flexible coupling is engineered to support higher rotational speeds and accommodate shaft misalignment, maintaining mechanical integrity without lubrication.

This shaft coupler offers a maximum operational speed of 6000 rpm and a torque rating of 1.92 Nm, suited for applications requiring precise torque transmission such as encoders, stepper motors, robotics, measuring instruments, servo systems, pumps, valves, and cooling fans. The four beams design provides torsional rigidity and zero backlash, enabling smooth and reliable power transmission.

The coupling tolerates angular misalignment up to 3°, parallel misalignment up to 0.2 mm, and axial misalignment up to 0.13 mm, making it adaptable to minor misalignment scenarios while maintaining performance. Its operating temperature spans from -40°C to 107°C, allowing usage in diverse environmental conditions.

Manufactured in the United States, it complies with RoHS3, DIN 912 12.9 standards, and REACH regulations. The set screw style fixing uses M4 cap screws, ensuring secure attachment to shafts, with the illustration shown representing the clamp style option. The coupling is designed as a single-piece unit eliminating mechanical joints and potential failure points, enhancing durability and reliability in demanding industrial applications.

Aluminium construction ensures lightweight and durability. Designed for continuous operation up to 6000 rpm maximum speed. Torque rating of 1.92 Nm suitable for precision power transmission. Four beams provide torsional rigidity with zero backlash.

Allows up to 3° angular, 0.2 mm parallel, and 0.13 mm axial misalignment. Suitable for temperatures ranging from -40°C to 107°C operating range. Material and RoHS3, DIN 912 12.9 compliances ensure quality and environmental safety.

Ideal for encoders, robotics, servo systems, pumps, valves, and fans. Set screw style with M4 socket head cap screws for secure mounting.

This flexible shaft coupler is widely used in industrial, laboratory, manufacturing, and automation sectors where precise torque transmission is critical and misalignment accommodation is required. It is suitable for mechanical power transmission and fluid power applications requiring reliable couplings with longevity.

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