Abstract: An oscillating double axle assembly comprising a bogie chassis including a transverse beam and two longitudinal beams, with a central pivot assembly located in alignment with the transverse beam and supporting each longitudinal beam for pivotal movement with respect thereto. An arm is centrally mounted on the central pivot assembly for free pivotal movement and the arm rotatably carries at its opposite ends wheels at equal spacing from the central pivot assembly. A spring assembly is secured to the arms and to the longitudinal beams to resist relative movement therebetween. One embodiment contemplates a reinforcement tube which extends from the ends of the transverse beam and which supports the arms through the intermediary of roller bearings. An elastic system resists relative rotation between the arms and the reinforcement tube.