Ruland Flexible Coupler 38.1 mm OD, 15 mm x 12 mm Bore, 57.2 mm Length, Clamp Style, 6000 RPM, 19.82 Nm FCMR38-15-12-SS

Ruland FCMR38-15-12-SS Flexible Coupler is a premium mechanical power transmission component designed for industrial applications requiring precise torque transfer and misalignment accommodation. Manufactured from 303 stainless steel bar stock sourced exclusively from North American mills, this coupler provides superior strength and corrosion resistance.

This six-beam coupling measures 38.1 mm outer diameter with bores of 15 mm and 12 mm, and a length of 57.2 mm. Its unique two sets of three spiral cuts deliver higher torque capacity, reduced windup, and larger body sizes compared to traditional beam couplings, making it ideal for light duty power transmission applications such as coupling servo motors to lead screws.

The clamp-style design features Nypatch anti-vibration hardware with metric M6 screws, ensuring even seating, preventing galling, and maintaining high holding power over repeated installations. The coupling operates effectively at speeds up to 6000 RPM and handles torque ratings of 19.82 Nm with a moment of inertia of 83.407 x 10-6 kg/m².

Key misalignment allowances include up to 3° angular, 0.76 mm parallel, and 0.38 mm axial, enabling flexibility in assembly without compromising performance. The aluminium hub and bellows, made of 7075-T651 extruded drawn aluminium bar, provide strength combined with lightweight design. With an operating temperature range of -40°C to 176°C, this coupler suits a wide variety of industrial, manufacturing, and mechanical power transmission environments.

The coupling is precision machined from high-quality 303 stainless steel for durability and corrosion resistance. Two sets of three spiral cuts enhance torque capacity and reduce backlash compared to lower beam counts. Balanced construction reduces vibration at rotational speeds up to 6000 RPM.

Metric M6 Nypatch hardware resists vibration-induced loosening and galling during repeated use. Designed for clamps with bore sizes of 15 mm and 12 mm for accurate shaft connections. Supports angular, parallel, and axial misalignment for flexible coupling installation.

Aluminium hub and bellows materials combine strength with corrosion resistance. Wide operating temperature range from -40°C to 176°C enables use in diverse industrial applications.

This coupler is ideal for mechanical transmissions in industries including robotics, automation, servo-driven equipment, and precision machinery requiring reliable torque transfer with minimal backlash.

Ruland manufactures this product in the United States under stringent quality standards and proprietary processes, ensuring reliability and consistency for critical power transmission needs.

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