These are welded gears with shaft and flanges on both ends that ar 15" long.The distance between the gear teeth would be 30". The tire of a welded gear is also called the rim, it is where the teeth are cut.
Another question is whether I can have this gear renitrided without fear of over...
We currently have a Gear with a tire made from NiCrMoV steel that we had gas nitrided. The company performing the nitriding stacked two gears on top of each other in a pit furnace. There was plenty of space between the gears and gear teeth for gas flow. The pit furnacve is heated from the bottom...