RUBEX PROPELLER 11.4X12

Function and technical context

The Rubex 11.4×12 propeller is the propulsion element responsible for transforming the engine power into direct thrust that moves the boat through the water. Mounted on the transmission shaft, it works in the propulsion system through the controlled rotation of its blades, which generate the traction necessary for advancement and maneuvering. This component is critical in the overall performance of the ship: a worn, damaged or misaligned propeller causes significant loss of speed, excessive fuel consumption, vibrations in the structure, and in extreme cases, water entry through the stuffing box if a structural failure occurs.

When to replace this part?

Regularly examine the propeller for visible signs of deterioration: corrosion on the blade tips, cavitation deformations, cracks, or loss of material due to impacts with submerged objects. Cavitation is the most frequent symptom in marine propellers, manifesting itself as a sudden decrease in thrust and an increase in cavitation noise during acceleration. It is recommended to check and inspect the propeller at least once per intensive sailing season, especially if operating in debris waters or in shallow draft areas. Preventive replacement prevents sudden breakdowns far from port and preserves propulsion efficiency at all times.

Equivalent manufacturer part numbers