Fast tier knot adjustable in height and size of the disk.; Knot fast tier, with the coupling system (2, 3) removably attached to the machine frame attached to a damper unit and a swing arm (5) for engaging the hub (7), where the swivel arm (5) has at one end a plurality of holes (53) for fixing, by screwing, of a fork (6), which in turn has a plurality of holes (61) corresponding with the holes (53) arm (5), joining the fork (6) to the hub (7) preferably by welding, fork (6) mounting at its lower part of a semicircular area for attachment to the hub (7), inclined relative to the ground preferably 15 ° C, while in its upper part has two extensions which include holes (61), between which the arm (5) is arranged for attachment.
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