Bearing assembly for a helicopter rear transmission shaft

Bearing assembly for a helicopter rear transmission shaft comprising a rolling bearing fixed by its inner race to the said transmission shaft and means for connecting its outer race to the structure of the craft, said rolling bearing is of the relubricatable type and is mounted tightly on the said shaft by its inner race in such a way as to be prevented from rotating and translating on the shaft, the latter for this purpose comprising a thrust shoulder, in that the outer race of the rolling bearing is shaped as a ball swivel or housed in a ball swivel with a spherical outer peripheral surface consisting of two half ball swivels back to back, and in that the said ball swivel is itself mounted in the spherical housing of a support consisting of two flanges arranged facing one another and slightly separated from one another in the axial direction prior to clamping, namely a support flange which can be fixed by lugs to the said structure of the craft and an adjusting flange that can be fixed to the previous one using screws.