Ruland Aluminium Flexible Screw Style Coupler 19.05 mm OD 0.25 mm Bore, 22.86 mm Length, 6000 RPM, 25.8 Nm Torque PSR12-4-4-A

Ruland PSR12-4-4-A is a high-performance aluminium flexible screw style coupler specifically engineered for demanding mechanical power transmission applications. Featuring an outside diameter of 19.05 mm, a very small bore size of 0.25 mm, and a total length of 22.86 mm, this coupler offers a compact design that facilitates installation in tight spaces.

Constructed as a one-piece torsionally rigid aluminium body, the coupler is designed to eliminate mechanical joints and potential failure points common to multi-piece couplings. The screw style fixing uses M4 grub screws staggered at 120 degrees to ensure secure shaft attachment with zero backlash, supporting precision shaft alignment.

Capable of handling torque up to 25.8 Nm and speeds up to 6000 RPM, it performs reliably even under high-speed or torque-intensive conditions. The coupling permits angular misalignment of up to 3°, parallel misalignment up to 0.2 mm, and axial misalignment up to 0.13 mm, accommodating minor shaft misalignments without performance loss. The four beam design helps absorb torsional shocks and vibrations enhancing durability.

It maintains operational stability across a temperature range from -40°C to 107°C, making it suitable for varied industrial environments. Compliance with REACH, DIN 912 12.9, and RoHS3 standards ensures high-quality manufacturing and environmental safety.

Typical applications include use with encoders, stepper motors, robotics, measuring instruments, servo systems, pumps, valves, and fans where precise motion and alignment compensation are critical. This coupling's aluminium construction also contributes to light weight and corrosion resistance, advantageous in many industrial setups.

Constructed from aluminium for lightweight strength and corrosion resistance. Rated for maximum speed of 6000 RPM ensuring efficient performance. Torque capacity of 25.8 Nm suitable for demanding mechanical power transmission needs.

Allows angular misalignment up to 3 degrees and axial misalignment up to 0.13 mm for flexibility in installations. Features four beams to absorb vibrations and torsional shocks ensuring durability. Designed with screw style fixing using M4 screws to secure shafts effectively.

Operates reliably across a temperature range from -40°C to 107°C. Manufactured to meet REACH, DIN 912 12.9, and RoHS3 standards for compliance and safety. Zero backlash and torsionally rigid one-piece construction minimizes mechanical failure points.

Applicable for robotics, stepper motors, encoders, servo systems, pumps, valves, and fans. Explore more Ruland flexible couplers and mechanical power transmission components on EnvMart to find compatible and high-quality parts tailored to your industrial requirements.

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