The invention relates to a machine with a ballast receiving device for receiving ballast located under a track by means of an endless excavating chain guided in a chain channel, with the chain channel being composed of a transverse channel which can be positioned under the track, an empty channel, and a transport channel provided for ballast transport. A conveyor device for transporting ballast in the direction of the transport channel is arranged along a top edge of the transverse channel. This additional device increases the movement of the ballast so that it completely enters the transport channel.