STAINLESS STEEL WASHER ROOT SHAFT 60

Function and technical context

This stainless steel washer acts as a sealing and load distribution element on the 60 mm tail shaft assembly, forming part of the transmission system between the engine and propeller. Its function is to avoid direct contact between metal parts subjected to vibration and torsional torque, protecting both the shaft and the adjacent fixing elements against premature wear. Being made of stainless steel, it offers superior resistance to marine corrosion in salt and brackish water environments, where conventional ferrous materials deteriorate quickly. Failure or deformation of this washer can result in play in the shaft, abnormal vibrations in the transmission and, in serious cases, damage to the stuffing box or thrust bearing.

When to replace this part?

The most common symptoms of wear on a shaft washer are the appearance of perceptible axial play when moving the shaft manually, visible rubbing marks or flattening on the bearing surface, and unusual vibrations transmitted to the hull during navigation. It is recommended to visually inspect this washer at each seasonal maintenance or each time the shaft assembly is disassembled for inspection of the stuffing box or propeller. Replacing it preventively when it shows any sign of deformation avoids costly breakdowns in the transmission system that could leave the boat inoperative on the high seas.