FLAT NECKLACE 90mm.

Function and technical context

The 90 mm flat collar is a fastening and sealing element that works in the transmission or exhaust systems of marine engines, acting as a retention and alignment piece between cylindrical components such as shafts, sleeves or pipes. Its main function is to maintain the axial position of the components it embraces, avoiding unwanted longitudinal displacements that could compromise the mechanical integrity of the assembly. A collar in poor condition or with excessive play can cause abnormal vibrations, misalignment of the tail shaft or loss of sealing at the connection points, with the consequent risk of water entry or accelerated degradation of adjacent components. The reference TEN00571 uniquely identifies this part, guaranteeing that the replacement is made with the component with the appropriate dimensions and tolerances for the marine application.

When to replace this part?

The most common symptoms that indicate that a flat collar needs to be replaced are the appearance of perceptible axial play when manually moving the shaft or sleeve, presence of galvanic corrosion or friction marks in the contact area, and vibrations or metallic noises in operation that did not exist previously. It is recommended to visually inspect the collar during each seasonal maintenance, checking that it does not present deformations, cracks or loss of tightening. Replacing it preventively at the slightest sign of wear avoids more costly breakdowns in navigation, where access for emergency repair is considerably more difficult and risky.

Compatibility