RUBEX ALUM PROPELLER 3-C 11X15 RIGHT

Function and technical context

The three-bladed Rubex aluminum propeller constitutes the direct propulsion element that transforms the power of the marine engine into movement of the boat. Coupled to the drive shaft, this propeller works in the propulsion system, where the rotation of the crankshaft is transmitted through the gearbox to the tail shaft. Its three-bladed design and 15-inch pitch make it suitable for cruisers and medium-displacement boats, offering a balance between speed and traction capacity. Propeller failure—whether due to deformation, cavitation, or corrosion—drastically reduces propulsive efficiency, increases engine revolutions without gaining speed, and can cause excessive vibration in the shaft line.

When to replace this part?

Rubex aluminum propellers suffer progressive wear due to cavitation, marine corrosion and impacts with submerged objects, manifesting in loss of thrust, increase in engine revolutions at the same speed, and audible cavitation under load. It is recommended to check the condition of the propeller before each sailing season and, after an impact or prolonged navigation in salt water, inspect for pitting, deformation or loss of material on the blades. Replacing the propeller preventively when it shows the first signs of cavitation avoids the risk of catastrophic breakage during navigation and subsequent damage to the drive shaft.

Equivalent manufacturer part numbers