An assembly comprises a componenet, a one-piece axial limit stop device, an annular ring and at least one angular portion developing in an arc between a first end, joined to the distal end of the annular ring, and a second, free end. The angular portion is in part movable from its first end, in a transverse plane perpendicular to the central axis, between a retracted position and at least one protruding position, being elastically returned permanently to the protruding position. In the retracted position, the angular portion is included within the volume of a cylinder continuing the outer cylindrical surface of the annular ring. In the protruding position, the free end of the angular portion extends radially beyond the volume of the cylinder continuing the outer cylindrical surface of the annular ring. The component bore has a specific inner geometry allowing the axial limit stop device to be easily attached and reliably fixed, while at the same time allowing easy detachment and extraction of the axial limit stop device in order to permit the removal of the element in the event of the latter sustaining damage.
