Ruland Mechanical Power Transmission Six Beam Spiral Clamp Coupler 16 mm Bore A 12 mm Bore B 38.1 mm OD 57.2 FCMR38-16-12-A

Ruland FCMR38-16-12-A mechanical power transmission coupler is engineered for light duty power transmission applications requiring precise and robust connection between servo motors and lead screws. This six beam spiral clamp coupler features dual bores sized 16 mm and 12 mm, an outer diameter of 38.1 mm, and an overall length of 57.2 mm. The unit is machined from a single piece of 7075 aluminium bar stock, providing a lightweight structure with low moment of inertia of 30.032 x 10-6 kg/m² that enables efficient dynamic operation.

The design incorporates two sets of three spiral cuts, granting improved torque capacity of 10.73 Nm and reduced windup compared to single or four beam couplers. This ensures zero backlash performance and supports angular misalignment up to 3°, parallel misalignment up to 0.76 mm, and axial misalignment up to 0.38 mm, making it ideal for applications with minor shaft misalignment.

Engineered to operate safely at speeds up to 6,000 RPM, the balanced coupling reduces vibration during high-speed rotation. Nypatch® anti-vibration hardware secures the clamp screws with metric M5 screws, preventing galling and preserving holding power through repeated installations. The hub material is aluminium, and the bellows are made of 7075-T651 extruded drawn aluminium bar, accommodating a wide temperature range from -40°C to 107°C.

Manufactured in Ruland’s Marlborough, MA facility under strict quality controls, this coupler complies with DIN 912 12.9, REACH, and RoHS3 standards. It is ideally suited for precision industrial applications in mechanical power transmission, laboratory automation, and servo motor coupling scenarios that demand reliability and reduced maintenance.

Machined from a single piece of 7075 aluminium for lightweight and low inertia. Six beam spiral cuts deliver higher torque capacity and lower windup. Zero-backlash and balanced design reduces vibration at speeds up to 6,000 RPM.

Includes Nypatch® anti-vibration hardware with metric M5 screws. Supports misalignment: angular 3°, parallel 0.76 mm, axial 0.38 mm. Operating temperature range from -40°C to 107°C. Complies with DIN 912 12.9, REACH, and RoHS3 standards.

Torque rating of 10.73 Nm suitable for light duty power transmission. Moment of inertia of 30.032 x 10-6 kg/m² for efficient dynamic performance. Browse more Mechanical Power Transmission Couplers at EnvMart for industrial automation and material handling solutions.