A method for balancing of disc blades which comprise a central disc and a series of protruding teeth jutting out cantilevered from the perimeter edge of the central disc; the method comprising the steps of: - determining the initial position of the center of mass of the disc blade to be balanced with respect to its main axis; - calculating/determining the number, the position and/or the dimensions of one or more balancing holes eccentric with respect to said main axis and necessary for removing an amount of material sufficient to bring the center of mass of the disc blade to a distance from the main axis less than a predetermined maximum limit value; and - forming said balancing hole or holes on the central disc in an eccentric position with respect to said main axis; said method being characterized in that the step of determining the initial position of the center of mass of the disc blade comprises the steps of: - bringing said disc blade to be balanced into rotation about its main axis; and - determining the state/degree of initial eccentricity of the center of mass of the disc blade; in that the step of bringing the disc blade to be balanced into rotation about its main axis comprises the steps of: - rigidly locking the disc blade to be balanced on a blade-holder spindle so that the main axis of the blade is substantially coincident with the rotation axis of the spindle; and - driving the blade-holder spindle into rotation about its rotation axis, so as to bring the disc blade into rotation about its main axis; and in that the step of forming said balancing hole or holes on the central disc comprises the steps of: - stopping the blade-holder spindle at least in a first previously-calculated angular position, so as to align a predetermined first point of the central disc to a drilling assembly; and - driving/commanding a moving apparatus of the drilling assembly (10, 11) so as to form a balancing hole at said predetermined first point of the central disc. the method comprising the steps of: - determining the initial position of the center of mass of the disc blade to be balanced with respect to its main axis; - calculating/determining the number, the position and/or the dimensions of one or more balancing holes eccentric with respect to said main axis and necessary for removing an amount of material sufficient to bring the center of mass of the disc blade to a distance from the main axis less than a predetermined maximum limit value; and - forming said balancing hole or holes on the central disc in an eccentric position with respect to said main axis; - determining the initial position of the center of mass of the disc blade to be balanced with respect to its main axis; - calculating/determining the number, the position and/or the dimensions of one or more balancing holes eccentric with respect to said main axis and necessary for removing an amount of material sufficient to bring the center of mass of the disc blade to a distance from the main axis less than a predetermined maximum limit value; and - forming said balancing hole or holes on the central disc in an eccentric position with respect to said main axis; said method being characterized in that the step of determining the initial position of the center of mass of the disc blade comprises the steps of: - bringing said disc blade to be balanced into rotation about its main axis; and - determining the state/degree of initial eccentricity of the center of mass of the disc blade; - bringing said disc blade to be balanced into rotation about its main axis; and - determining the state/degree of initial eccentricity of the center of mass of the disc blade; in that the step of bringing the disc blade to be balanced into rotation about its main axis comprises the steps of: - rigidly locking the disc blade to be balanced on a blade-holder spindle so that the main axis of the blade is substantially coincident with the rotation axis of the spindle; and - driving the blade-holder spindle into rotation about its rotation axis, so as to bring the disc blade into rotation about its main axis; - rigidly locking the disc blade to be balanced on a blade-holder spindle so that the main axis of the blade is substantially coincident with the rotation axis of the spindle; and - driving the blade-holder spindle into rotation about its rotation axis, so as to bring the disc blade into rotation about its main axis; and in that the step of forming said balancing hole or holes on the central disc comprises the steps of: - stopping the blade-holder spindle at least in a first previously-calculated angular position, so as to align a predetermined first point of the central disc to a drilling assembly; and - driving/commanding a moving apparatus of the drilling assembly (10, 11) so as to form a balancing hole at said predetermined first point of the central disc. - stopping the blade-holder spindle at least in a first previously-calculated angular position, so as to align a predetermined first point of the central disc to a drilling assembly; and - driving/commanding a moving apparatus of the drilling assembly (10, 11) so as to form a balancing hole at said predetermined first point of the central disc.