TRANSMISSION SHAFT BEARING 93342-624U0

Function and technical context

The drive shaft bearing is a fundamental component in the Yamaha engine propulsion line, responsible for supporting and aligning the shaft that transmits power from the engine to the propeller. This bearing works in the marine transmission system, supporting significant axial and radial loads during navigation. Its correct operation is critical to maintain shaft alignment, avoid excessive vibrations, prevent water from entering the engine chamber, and ensure efficient power transmission without losses due to abnormal friction.

When to replace this part?

Symptoms of shaft bearing wear include unusual vibrations while sailing, rubbing or tearing noises coming from the transmission area, and in advanced cases, loss of shaft alignment that can cause water to enter the engine. It is recommended to inspect the condition of the bearing during each seasonal maintenance, especially after prolonged navigation or in water with sediment. Preventively replacing the worn bearing prevents serious breakdowns at sea and prolongs the life of the drive shaft and other associated components.

Equivalent manufacturer part numbers