scope:

NEN-EN-ISO 6103 specifies the maximum permissible values of unbalances for bonded abrasive wheels with an outside diameter D ≥ 125 mm and maximum operating speed vs ≥ 16 m/s, in the as-delivered condition. It also specifies the method for measuring the unbalance and the practical method for testing whether a grinding wheel is acceptable or not. This International Standard is applicable to bonded abrasive wheels in the as-delivered condition. This International Standard is not applicable to - diamond, cubic boron nitride or natural stone grinding wheels, or - centreless control wheels, lapping and disc wheels, ball wheels or glass grinding wheels. - additional stresses on the arbor, the machine and its mounting, - excessive wear of the bearings, - vibration prejudicial to the quality of machining and increased internal stresses in the grinding wheel, and increased operator fatigue.