Abstract: A metalling re-distribution system on a machine to shape and re-distribute railway road beds is disclosed having movable screens with terminal ploughs and cooperating with chutes that cover the rails, including, in a central position between the chutes, a bladed drum which has its axis substantially horizontal and parallel to the railway line, powered and capable of two-directional motion. The machine to shape and re-distribute railway road beds which employs the metalling re-distribution system is also disclosed.