Collar Harnesson

Function and technical context

The Arnesson collar TEN02517 is a transmission component of the Arneson Surface Drive system, designed to guide and secure the tailshaft in its correct position within the propulsion assembly. It acts as a fastening and alignment element, absorbing the radial loads generated by the rotational movement of the axis during navigation. Its structural integrity is critical to maintaining precise alignment between the engine and propeller: any looseness or breakage in this collar can cause excessive vibrations in the drive train, accelerated wear of adjacent seals and bearings, and even serious damage to the propeller shaft. As it is an element integrated into the surface transmission system, its correct condition is essential to guarantee the propulsive efficiency and safety of the vessel.

When to replace this part?

The most common symptoms of a worn or damaged collar on an Arneson system are unusual vibrations in the tail shaft, metallic noises during propulsion, noticeable play in the shaft, or rubbing marks in the contact areas of the assembly. It is recommended to inspect this component during each seasonal maintenance or each time the drive unit is disassembled to check seals and bearings. Replacing the collar preventively at the first signs of wear avoids more costly breakdowns in the transmission assembly and possible stops while navigating.

Compatibility table