Track belt and a track assembly

A track belt configured to turn around reverse rolls and comprising a belt like bearing element, the bearing element having an inner surface, an outer surface, and a width, a guide element in the longitudinal direction of the track belt in the inner surface of the bearing element, the guide element comprising a first edge protrusion and a second edge protrusion, and the guide element having a width substantially smaller than the width of the bearing element, and the track belt further comprising a first guide groove with a first flank surface formed by the first edge protrusion, and a second guide groove with a first flank surface formed by the second edge protrusion, wherein the first flank surfaces of the edge protrusions are uniform and continuous substantially over the entire length of the guide element, and the guide element comprising a traction surface extending substantially in parallel with the inner surface of the bearing element and comprising engaging members for receiving engaging parts of a drive wheel.