Ruland Aluminium Flexible Shaft Coupler , 12.7 mm Outside Diameter, 5 mm and 4 mm Bore, 19.1 mm Length, Screw PSMR13-5-4-A

Ruland PSMR13-5-4-A is an aluminium flexible shaft coupler crafted for demanding mechanical power transmission tasks. With a 12.7 mm outside diameter, 5 mm and 4 mm bores, and a compact 19.1 mm length, it offers robust coupling and precise performance in tight spaces.

This model features a screw style fixing, providing a secure connection via M2 screws and supporting up to 4 beams for constant velocity and torsional rigidity. Its one-piece aluminium body eliminates mechanical joints, minimizing the risk of mechanical failure and ensuring zero backlash.

The coupler is ideal for applications requiring high speeds up to 6000 rpm and is tolerant to angular misalignment up to 3°, parallel misalignment up to 0.2 mm, and axial misalignment up to 0.13 mm. It operates reliably within a wide temperature range, from -40°C up to 107°C, making it suitable for industrial automation, robotics, encoder mounting, stepper motor assemblies, and servo system integration.

One-piece aluminium construction ensures rigidity and durability. Designed for high speeds up to 6000 rpm with zero backlash. Accommodates both angular and axial misalignment for flexible operation. Screw style fixing provides secure shaft connection using M2 screws.

Suitable for bore sizes of 5 mm and 4 mm to allow pairing of different shaft diameters. Operates between -40°C and 107°C, meeting DIN 912 12.9, REACH, and RoHS3 standards. Typically used in encoders, stepper motors, robotics, pumps, and measuring instruments.

No lubrication required for maintenance-free operation.

The coupling’s torsionally rigid construction is not temperature sensitive, supporting reversible high and low speed operation. Its compliance to DIN 912 12.9, REACH, and RoHS3 standards confirms its suitability for industrial, laboratory, and commercial environments.

Industrial applications include mechanical power transmission in factory automation, precise motion systems in laboratory instruments, and robust coupling solutions for pumps, valves, fans, and robotics. With its easy installation and maintenance-free design, the Ruland PSMR13-5-4-A shaft coupler enables reliable and efficient integration across a wide range of machinery.

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