Section R. 408.10142 - Flange constructionRule 142.
(1) Whenever a wheel is mounted between flanges, the flange shall be designed to transmit the driving torque from the spindle to the abrasive wheel. They shall be dimensionally accurate and balanced with no rough surfaces or sharp edges.(2) A flange shall be made of steel, cast iron or materials of equal strength and rigidity so that when tightened, the radial width of the bearing surface of contact on the abrasive wheel is maintained (see figure 11 of R 408.10198).(3) Two flanges between which an abrasive wheel is mounted, except when a special adaptor is used on a depressed center wheel, shall have the same dimensions and bearing surface.(4) The minimum dimensions for the following types of flanges shall be maintained according to the listed figures and tables: (a) Straight relieved flange - figure 11 of R 408.10198 and table 11 of R 408.10199.(b) Straight unrelieved flange - figure 12 of R 408.10198 and table 12 of R 408.10199.(c) Straight adaptor flange - figure 13 of R 408.10198 and table 13 of R 408.10199.(d) Straight flange - figures 14 and 15 of R 408.10198 and table 14 of R 408.10199.(e) Straight adaptor flange - figure 16 of R 408.10198 and table 15 of R 408.10199.(f) Straight adaptor flange - heavy duty - figures 17 and 18 of R 408.10198 and table 16 of R 408.10199.(g) Arborless wheel flange - figures 19 and 20 of R 408.10198 and table 17 of R 408.10199.(h) Straight flange for wheel sleeves - figure 21 of R 408.10198 and table 18 of R 408.10199.Mich. Admin. Code R. 408.10142