TITAN STAINLESS STEEL PROPELLER 15.50X15 RIGHT

Function and technical context

The propeller is the final element of the marine propulsion chain: it transforms the mechanical power of the engine into hydrodynamic thrust, directly determining the cruising speed, acceleration and fuel consumption of the vessel. This 15.50-inch diameter and 15-inch pitch unit with right-hand rotation works in shaft transmission systems, where the correct correspondence between the direction of rotation of the engine and that of the propeller is essential to obtain the appropriate thrust vector and avoid unwanted vibrations in the propulsion assembly. Made of high-strength stainless steel, it maintains its blade geometry in demanding navigation conditions—salt water, sandy bottoms or with the presence of debris—where softer alloys lose section and reduce their hydraulic performance quickly. A propeller with inadequate pitch or diameter, or with the wrong direction of rotation, causes engine overloads, excessive consumption and a significant loss of performance that can be confused with an internal mechanical failure.

When to replace this part?

The most common symptoms that indicate the need to check or change the propeller are: abnormal vibrations perceived in the hull or shaft at different revolutions, loss of top speed without apparent cause in the engine, excessive cavitation - bubbles and characteristic noise at the stern - and visible damage to the blades such as bends, cracks, notches or cavitation erosion. At each grounding or seasonal maintenance, it is advisable to visually inspect the condition of the blades and check that they are not deformed, since even a slight impact with a solid object alters the dynamic balance and reduces propulsion performance. Replacing the propeller preventively at the first symptom avoids requesting assistance at sea and protects the shaft and bearings from premature wear resulting from unbalanced work.

Compatibility table

Equivalent manufacturer part numbers