1 ) A method ( 100 ) for the classification of defects and running of the grinding of lamination cylinders comprising the following phases which consist in: a) identifying defect areas in a map illustrating a plurality of surface measurements of a cylinder; b) calculating, for each defect area identified, a plurality of typical parameters; c) identifying a type of defect associated with said defect areas identified, on the basis of these parameters calculated; d) determining ( 120 ) an acceptability threshold of the specific defect for each type of defect identified; e) defining ( 130 ) a corrective action for each defect area on the basis of the comparison between said acceptability threshold associated with the type of defect of said defect area, and a measurement of said plurality of surface measurements of the cylinder associate with said defect area; f) determining ( 140 ) grinding parameters on the basis of said surface measurements of said cylinder, if the corrective action defined in phase c) is a grinding operation to remove the defects.