A suspension assembly for a vehicle axle. The assembly comprises a support structure, a housing element rotatably connected, about a transverse axis, to a support element in which the support structure is configured in a such a manner that it can rotate in relation to the support element about the longitudinal axis of the vehicle and is secured to the main chassis of the vehicle by a pair of hydraulic cylinders. The support structure comprises a pair of main guides, which can be fixed to the main chassis and a rolling element which slides between the pair of main guides and a contact element with a pair of further guides, the contact element operatively associated with the pair of further guides so as to come into contact with one of the further guides following a rotation about the rolling element.