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There are three primary AGMA standards that have tolerance grading classifications; for spur and helical gears see ANSI/AGMA 2000-A88, for bevel gears see ANSI/AGMA 2009-A98, and for cylindrical worm gears see ANSI/AGMA 2011-A98. In addition, for spur and helical gears, ISO 1328-1 or ISO 1328-2, could be applied.
