This Standard applies to cut-off machines fitted with - one bonded reinforced wheel of Type 41 or Type 42, or - one or more diamond cut-off wheels with the peripheral gaps, if any, not exceeding 10 mm and with - a rated speed not exceeding a peripheral speed of the wheel of 100 m/s at rated capacity and - a rated wheel capacity range of 55 mm to 410 mm. These machines are intended to cut materials such as metals, concrete, masonry, glass and tile.