Vetus COMFL1330 - Combiflex 13 Flexible Coupling, Shaft Ø 30 mm

Vetus COMFL1330 Combiflex 13 Flexible Shaft Coupling – Ø 30 mm Shaft, 4" Flange

The Vetus COMFL1330 Combiflex 13 Flexible Coupling is a compact and durable shaft coupling engineered to reduce torsional vibrations and alignment stress in marine propulsion systems. It merges the performance benefits of the renowned Vetus UNIFLEX and BULLFLEX designs into one innovative product that provides superior damping, noise reduction, and installation simplicity.

The flexible rubber element ensures smooth, vibration-free torque transmission between the engine and propeller shaft, eliminating mechanical backlash and protecting driveline components from wear and fatigue. Even with shaft misalignments of up to 2°, the coupling maintains perfect centering on the gearbox flange, ensuring consistent performance in both forward and reverse gear. This design delivers quiet, balanced propulsion across the full RPM range.

The parallel clamping hub provides a secure and simple installation without the need for tapering or keyway machining—just cut the shaft to length, remove burrs, clean, and install. The 4” standard flange fits most gearbox models directly, while optional adapter flanges allow easy integration with Volvo, Yanmar, and Kanzaki gearboxes.

Key Features

• Combines the advantages of UNIFLEX and BULLFLEX couplings in one design
• Excellent damping of torsional vibrations and irregularities at low RPMs
• Non-tapered clamping hub for fast installation and removal
• 4” flange fits most common gearbox types directly
• Allows up to 2° shaft misalignment while maintaining perfect centering
• Secured against axial and radial shear for maximum safety
• Integrated thrust damper for improved driveline protection
• Removable centering ring for flexible use
• Corrosion-resistant and marine-grade construction

Technical Specifications

Applications

1. Marine propulsion systems with 30 mm propeller shafts
2. Engines up to approximately 48 HP
3. Direct-fit for Hurth, Velvet, Technodrive, ZF, and P.R.M. gearboxes
4. Ideal for pleasure and light commercial craft requiring vibration-free operation

The Vetus COMFL1330 Combiflex 13 Flexible Coupling ensures precise alignment, vibration isolation, and simple installation. Its durable rubber damping core and shear-protected design deliver reliable torque transmission, reduced mechanical stress, and superior comfort for long-lasting, smooth marine propulsion.