Lopping machines for green pruning suitable to all kind of vineyard, it is applied to an all-purpose tractor with frontal attachment or standard flanging. The model includes a hydraulic system, 2 vertical bars of 1.80 mt or 2.10 mt with single or double self-sharpening blades, 1 horizontal bar with single self-sharpening blade, standard flanging and support stand adjustable in height.