Ruland Four Beam Spiral Flexible Coupler 31.8 mm OD, 12 mm Bore, 38.1 mm Length Clamp Style PCMR32-12-12-A

Ruland PCMR32-12-12-A four beam spiral flexible coupler is engineered for precision mechanical power transmission systems requiring high positioning accuracy and durability. With 31.8 mm outer diameter and 12 mm bores on both ends, this clamp style coupler has a length of 38.1 mm and is manufactured from aerospace-grade 7075-T651 aluminium alloy, providing excellent strength-to-weight ratio and low moment of inertia.

The coupling utilizes two sets of spiral cuts machined in a single-piece aluminum bar to provide enhanced torque capacity and minimal windup, making it ideal for encoder applications and rotating equipment requiring zero backlash. Its balanced design reduces vibration and supports rotational speeds up to 6000 rpm safely.

It accommodates various shaft misalignments including angular, parallel, and axial deviations to maintain reliable torque transmission under dynamic conditions. Operating temperature ranges from -40°C minimum to 107°C maximum facilitates use in diverse industrial environments.

All hardware includes metric M4 screws, complying with DIN 912 12.9 standards, and the product meets RoHS3 and REACH regulations for environmental safety. The coupler is manufactured under stringent quality controls in the Marlborough, MA facility using materials sourced exclusively from North American mills.

Machined single-piece 7075-T651 aluminium for strength and lightweight. Two spiral cuts enhance torque capacity and reduce windup. Zero-backlash and balanced design reduce vibration at high speeds. Clamp style aluminium hub for secure shaft connection.

Supports 6000 rpm max speed and 5.88 Nm torque rating. Accommodates misalignment: 3° angular, 0.38 mm parallel, 0.25 mm axial. Temperature operating range from -40°C to 107°C. Complies with DIN 912 12.9, REACH, RoHS3 standards.

Includes metric M4 screws for installation.

This coupler is suitable for industrial and laboratory machinery requiring precise torque transfer, such as encoders, servo motors, and other high-speed rotating equipment. Ideal for applications in manufacturing, robotics, automation, and mechanical power transmission systems requiring reliability and accuracy.

Explore the range of Mechanical Power Transmission Couplers at EnvMart for a wide selection of flexible couplings tailored to your engineering requirements.