Ruland Flexible Coupler Clamp Style Aluminium Hub 19.1 mm OD, 8 mm & 5 mm Bore, 31.8 mm Length FCMR19-8-5-A

Ruland FCMR19-8-5-A is a precision flexible coupling offering excellent performance in light duty power transmission tasks, especially suited for coupling servo motors to lead screws. Manufactured from a single piece of high-grade 7075-T651 extruded drawn aluminium bar, this coupling ensures lightweight construction with reduced inertia and enhanced durability.

Featuring clamp style aluminium hubs, the coupling has dual bore sizes of 8 mm and 5 mm, allowing it to fit various shaft configurations efficiently. The coupling length measures 31.8 mm with an outer diameter of 19.1 mm, making it compact yet robust for mechanical power transmission needs.

This coupler supports operational speeds up to 6000 rpm and a torque rating of 2.26 Nm with carefully engineered spiral cuts that reduce windup and vibration at high speeds. It accommodates angular misalignment of 3°, parallel misalignment of 0.2 mm, and axial misalignment of 0.13 mm, providing mechanical flexibility during operation.

The product is designed to function reliably within a wide temperature range, from -40°C minimum to 107°C maximum, appropriate for industrial, laboratory, manufacturing, and automation applications where precise shaft connections are critical.

Additionally, the coupling includes metric M3 screws with Nypatch® anti-vibration treatment which ensures sustained high holding power, prevents screw galling, and allows repeated screw installations without damage.

Ruland couplings are proudly manufactured under strict quality controls in Marlborough, MA, using exclusively North American bar stock materials. This product complies with DIN 912 12.9, REACH, and RoHS3 standards, highlighting its conformity with industrial quality and environmental safety requirements.

Constructed with 7075-T651 aluminium for lightweight and durability. Clamp style hubs fitted with Nypatch® anti-vibration screws. Supports angular, parallel, and axial misalignment. High rotational speed tolerance at up to 6000 rpm.

Compatible with servo motors and lead screw assemblies. Operable in harsh temperature environments from -40°C to 107°C. Meets DIN 912 12.9, REACH, and RoHS3 industrial standards.

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