SUPPORTING DEVICE FOR ABRASIVE ELEMENTS

A supporting device (1) for an abrasive element (30) associable to an orbital or random orbital sander machine (50), includes a supporting body (2) comprising an external face (21) and a central part (3) provided with a series of first through holes (11) and a connecting element (6) fixed to the supporting body (2) and arranged for supporting an abrasive element (30); the connecting element (6) comprises a central portion (7) provided with a series of second through holes (12) facing the series of first through holes (11); the supporting body (2) comprises an annular cavity (5) made in a peripheral part (4) of the supporting body (2) around the central part (3) and provided with a series of third through holes (13); the supporting device (1) further comprises a closing element (10) coupleable to the supporting body (2) such as to close the annular cavity (5) and form an inner annular chamber (16); the closing element (10) is provided with a series of fourth through holes (14) facing a series of fifth through holes (15) made on an peripheral annular portion (8) of the connecting element (6); the first through holes (11) and the third through holes (13) of the supporting body (2) come out at a coupling portion (21a) of the external face (21) adapted to couple to an air and sanding dust suction system of the sander machine (50).