scope:

Specifies how a type test for the measurement of vibration at the handgrip of portable grinders shall be performed. It supplements ISO 8662-1 which gives the general specifications for the measurement of vibration at the handles of handheld power driven tools. It specifies the operation of the tool under type test and other requirements for the performance of the type test. It has been found that vibrations, generated by a die grinder grinding on a workpiece varies considerably. The variance is due to the difference in the unbalance of the die grinder together with its mounted burr or mounted point. The unbalance also changes when mounted point is used for grinding. In order to provide a method which gives good measurement reproducibility, the procedure adopted in this standard uses a test device of known unbalance mounted in a power tool and running free. Although the values measured are not obtained by grinding, there is a good correlation between the values obtained when the die grinder is running free at nominal working speed with a test device mounted and those obtained when grinding. The principle of the operation of a die grinder is that the driving medium causes an output spindle to rotate. The spindle is adapted to carry a cutting or an abrasive device for material removal.