19.6 For all tools where the relevant part of IEC 62841-2, IEC 62841-3 or IEC 62841-4 requires the tool to be marked with the rated no-load speed, the no-load speed of the spindle at rated voltage shall not exceed 110 % of the rated no-load speed.Compliance is checked by measuring the speed of the spindle after the tool has been operating for 5 min at no-load. During the test, separable accessories are not mounted.