R 408.41960 Abrasive wheels generally.

Rule 1960. (1) Except for the following operations or tools, an abrasive wheel shall be provided with a guard that cover’s the spindle end, nut, and flange projections as well as the periphery: (a) Internal grinding while within the work being ground. (b) Mounted wheels that are not more than 2 inches in diameter. (c) A cup wheel operated at less than 500 revolutions per minute. (d) A tuck-point grinder wheel. Such wheel shall be guarded as shown in figure 1. (e) Masonry or concrete saws. Such saws may have the spindle end, nut, and flange guarded as shown in figure 2 or 3. (2) An abrasive wheel shall not be run at a speed that is greater than the rated speed on the wheel. (3) A cracked or broken abrasive wheel shall not be used. (4) Eye protection shall be provided to, and used by, each employee operating an abrasive wheel. Eye protection shall comply with the provisions of Construction Safety Standard Part 6 “Personal Protective Equipment,” as referenced in R 408.41902. (5) Figures (1), (2), and (3) read as follows: