Safety Standard of Machinery, Equipment and Tools Article 86

Each lot of the grinding wheel with the diameter over 100 millimeters shall be taken a rotation test by the velocity which is the highest using peripheral velocity of that wheel multiplied by1.5.The grinding wheel for testing in the preceding paragraph shall be taken over 10 percent of that products. For a number below five, the five is concerned.If all tested grinding wheels are normal, the lot is qualified.If abnormal rate below 5 percent, the others of the lot are qualified except the abnormal grinding wheels. However, significantly abnormal products cannot be included in the number of that test.Grinding wheels shall implement a regular rotation-breaking test following the next paragraph. The qualified wheels can example the rotation test in the first paragraph. Failed grinding wheels in the regular rotation-breaking test shall be treated according to the second paragraph.The regular rotation-breaking test is implemented by taking more than three grinding wheels having the same kind of bonder and being used in the normal velocity. If the minimum rotation breaking peripheral velocity get from the test is over the highest using velocity multiplied by 1.8 in case of machine grinding except coarse grinding, or over that multiplied by 2 in case of other grinding, those products having this kind of bonder and being used in normal velocity are qualified.