COLLAR SHAFT 40mm.

Function and technical context

The 40 mm shaft collar is a retention and support element that works directly on the boat's drive shaft, ensuring its axial position and preventing unwanted longitudinal displacements during navigation. It is part of the transmission system, acting as a structural support point between the drive shaft and the adjacent components of the drive assembly. Its integrity is decisive to maintain the correct alignment of the shaft, since any looseness or deterioration of the collar can translate into abnormal vibrations, accelerated wear of bearings and coils, and even progressive damage to the stuffing box or the shaft seal. The reference TEN00511 corresponds to a diameter of 40 mm, a standard measurement widely used in propulsion installations for pleasure and work boats.

When to replace this part?

The most common symptoms of a deteriorated axle collar include noticeable vibrations in the axle line, clunking or knocking noises when operating at certain speeds, and visible irregular wear on the axle mating surfaces or nearby bearing elements. It is recommended to inspect the collar at each seasonal maintenance, checking for the absence of corrosion, cracks or deformations, especially in saltwater environments where material degradation is accelerated. Replacing it preventively at the slightest sign of play or corrosion prevents damage to the transmission line that can leave the boat inoperative on the high seas.

Compatibility table