Support unit for an idling element such as the nondriven wheel of a motor vehicle

摘要

Support unit for a free running element, especially a nondriving wheel of a vehicle, consisting of a first and second support element mounted coaxially and rotatably relative to each other; a first pair of opposing annular raceways cooperating by angular contact with the first set of rolling elements and provided externally on the first support element and internally on the second support element; an annular element carried externally on the initial support element; a second pair of opposing annular raceways cooperating by angular contact with the second set of rolling elements and provided externally on the annular element and internally on the second support element, half-cones engaging in an annular groove provided externally in the first support element and cooperating with the annular element to hold it in cooperation with the second set of rolling elements; and a retaining ring capable of holding the half-cones engaged in the annular groove of the first support element, characterized in that said retaining ring is fixed exclusively to said annular element.