Keywords: gearing, spur gear, internal gear, gear, tooth, toothing, design, strength check, helical, tolerances, material, ISO6336:2006, ISO1265, ISO1328, ISO1122, DIN3990, ANSI/AGMA 2001-D04, AGMA 908-B89, ANSI/AGMA 2015-1-A01, ANSI/AGMA 2015-2-A06, DXF, CAD |