COLLAR SHAFT 50mm.

Function and technical context

The 50mm shaft collar is an axial positioning and fastening element that works directly on the boat's drive shaft, keeping it aligned and fixing its longitudinal position within the propulsion assembly. Its function within the transmission system is to prevent unwanted axial displacement of the shaft, ensuring that the propeller and associated components operate in the design position throughout navigation. Without a collar in good condition, the shaft can suffer excessive axial play that transmits abnormal loads to the bearings, stuffing box and horn, accelerating the wear of all these components. The reference TEN00513 corresponds to a collar with an internal diameter of 50 mm, a critical dimension to guarantee the correct fit on the shaft without clearances that compromise the tightness and integrity of the propulsion system.

When to replace this part?

The most common symptoms of a deteriorated shaft collar are the appearance of abnormal vibration in the shaft line, metallic noises or noticeable knocking from the bilge when accelerating or decelerating, and visible or tactile axial play in the shaft when pushing it manually. It is recommended to inspect the collar at each docking or seasonal maintenance, paying special attention to signs of corrosion, cracks or deformation of the metal body and the condition of the fixing screw. Replacing the collar preventively if there is any sign of wear prevents major damage to the shaft line that can leave the boat unnavigable in open waters.

Compatibility table