FLAT NECKLACE 28.6mm.

Function and technical context

The 28.6 mm flat collar is a fastening and positioning element that acts as a stop or guide within the mechanical assembly to which it belongs, ensuring that adjacent components maintain correct alignment and axial play during engine or transmission operation. This type of part usually works in transmission systems, axles or rotating assemblies, where its function is to absorb light axial loads and prevent longitudinal displacement of the parts it surrounds. A collar in poor condition can cause excessive clearances, abnormal vibrations in the shaft or accelerated wear of adjacent components, compromising the mechanical integrity of the assembly and leading to higher cost breakdowns if not attended to in time.

When to replace this part?

The most common symptoms indicating wear or failure of a flat collar are visible axial play in the shaft, vibrations or metallic noises during navigation, and scuff marks on the mating surfaces of adjacent parts. It is recommended to inspect the collar during each seasonal maintenance or each time the assembly in which it is integrated is dismantled, checking that it does not present deformations, corrosion or loss of flatness. Replacing it preventively at the slightest sign of deterioration avoids larger interventions in compromised navigation situations.