STAINLESS STEEL WASHER ROOT SHAFT 30

Function and technical context

This stainless steel washer acts as a support and sealing element on the 30 mm tail shaft, working within the propeller transmission system where its purpose is to distribute the axial load, prevent metal-to-metal contact between moving components and protect the seating surfaces against wear due to friction and vibration. Being made of stainless steel, it offers superior resistance to corrosion in salt and brackish water environments, an essential condition in nautical propulsion applications. If this washer deteriorates or loses its geometry, irregular seating of the shaft assembly, abnormal vibrations in the propulsion line and even progressive damage to the mechanical seal or stuffing box may occur, compromising the tightness of the hull.

When to replace this part?

The most common symptoms of wear on a shaft washer are: visible marks or grooves on its surface, deformation or loss of flatness that generates excessive axial play in the shaft, and the appearance of vibrations or metallic noises in the propulsion line during navigation. It is recommended that this washer be inspected at each seasonal maintenance or each time the shaft assembly is disassembled to check the stuffing box, mechanical seal or propeller. Replacing it preventively at the slightest sign of wear prevents chain damage to higher-cost components, such as the axle bushing or the stuffing box itself, and guarantees the safety of the boat while sailing.

Compatibility table