ALUM PROPELLER RUBEX 3-D 13.0x21 RIGHT

Function and technical context

The 13.0x21 right-hand Rubex 3-D aluminum propeller is the fundamental propulsion element in the marine transmission, responsible for converting engine power into direct thrust over the water. This propeller works integrated into the propulsion system, coupled to the engine output shaft by means of a conical hub that guarantees efficient transfer of revolutions. Its three-bladed marine aluminum design offers resistance to corrosion in salt water and durability in service, being critical to maintaining the speed, maneuverability and fuel performance of the vessel. Progressive wear or failure of this part generates loss of traction, abnormal vibrations in the shaft and a significant reduction in navigation speed.

When to replace this part?

Aluminum propellers require annual inspection to detect deformations, microcracks, leading edge erosion or cavitation pitting, typical symptoms of progressive wear in marine navigation. It is recommended to check the condition of the propeller at the beginning of each sailing season and after any impact or grounding, as non-visible damage can cause shaft misalignment and continuous vibration. Replacing the propeller preventively when the first signs of wear appear avoids costly repairs to the shaft, bearings and engine during prolonged navigation.

Equivalent manufacturer part numbers