Ruland Aluminium Flexible Coupler Screw Style 12.7 mm OD 4 mm Bore, 19.1 mm Length, 6000 rpm Maximum Speed PSMR13-4-4-A

Ruland PSMR13-4-4-A aluminium flexible coupler is engineered for robust mechanical power transmission applications requiring precision and durability. Featuring a 12.7 mm outside diameter and a 4 mm bore size with an overall length of 19.1 mm, this coupling supports maximum rotational speeds up to 6000 rpm. Its screw style with 4 beams offers torsional rigidity and zero backlash, making it ideal for applications where angular, parallel, and axial misalignments occur.

Manufactured as a single piece from quality aluminium, it eliminates mechanical joints, reducing potential failure points and maintenance needs. This coupler operates effectively within a temperature range of -40°C to 107°C without requiring lubrication, ensuring reliable performance in diverse industrial environments.

Typical use cases include encoders, stepper motors, robotics, servo systems, measuring instruments, pumps, valves, and fans. Its high torque capacity combined with misalignment tolerance - up to 3° angular and 0.2 mm parallel - ensures operational flexibility and longevity in demanding industrial and manufacturing settings.

The coupling uses one M2 grub-screw per shaft for secure fixing, staggered at 120°. It complies with key standards including RoHS3, DIN 912 12.9, and REACH, ensuring environmentally responsible manufacturing and quality performance.

Constructed from lightweight aluminium material ensuring durability and strength. Torsionally rigid one-piece design provides zero backlash and high torque capacity. Supports up to 3° angular, 0.2 mm parallel, and 0.13 mm axial misalignment.

Operates within temperature range of -40°C to 107°C without lubrication. Screw style coupling fixed with M2 grub-screws, staggered at 120 degrees. Ideal for robotics, encoders, servo systems, stepper motors, pumps, valves, and fans.

Complies with RoHS3, DIN 912 12.9, and REACH standards.

This flexible coupler is suitable for industrial, manufacturing, robotics, HVAC, and electrical automation applications requiring precision mechanical power transmission components. Browse EnvMart’s collection of Mechanical Power Transmission Couplers for reliable coupling solutions.