Patent ID: 8070445

Claim:
A turbomachine rotor balancing system comprising a balancing flange provided with a plurality of through-passageways, said system also comprising a plurality of balance weights each mounted fixedly onto said balancing flange by means of a first and a second screw/nut assembly having respectively a first screw and a second screw passing respectively through a first and a second directly consecutive passageway, each of said passageways having a first and a second tangential end side situated on either side of the screw of said associated screw/nut assembly, said second tangential end side being offset tangentially from the first tangential end side in a first direction and said first through-passageway being offset tangentially from said second through-passageway in a second direction opposite to the first direction, wherein said first screw is pressing against said first tangential end side of said first through-passageway and at a distance from said second tangential end side, and wherein said second screw is pressing against said second tangential end side of said second through-passageway and at a distance from said first tangential end side.