STAINLESS STEEL PROPELLER RUBEX NS3-E 14.3X17 RIGHT

Function and technical context

The Rubex NS3-E 14.3×17 propeller is the propeller responsible for converting the mechanical power of the engine into direct thrust towards the water, being the critical element of the propulsion transmission of motor boats. This piece works integrated into the tail shaft, coupled directly to the outboard or inboard motor, transmitting the revolutions of the crankshaft in a controlled forward movement. Its three-blade, 14.3-inch diameter, 17-inch pitch geometry is calculated to keep the engine operating within the optimal rev ranges, avoiding overspeeds that cause power loss, propeller overheating or destructive cavitation in salt water.

When to replace this part?

The propeller must be replaced when it shows visible deformations in the blades, cracks in the leading edges, loss of symmetry in rotation, abnormal reduction in revolutions at maximum power, or obvious deterioration of the surface due to deep surface corrosion and cavitation pits. It is recommended to check the condition of the propeller at least once every intensive sailing season, especially after sailing in waters with sediment, vegetation or rocks, since accelerated wear and hidden micro-fractures compromise engine performance long before a total breakdown occurs. Replacing the propeller preventively when the first signs of wear are detected is the best strategy to avoid engine repairs in high-altitude navigation or in adverse conditions.

Equivalent manufacturer part numbers