My favorite way to remove bearing races is to weld a thick bead around the inside where the bearings ride on the race with a wirefeed welder. This does two things: it destroys the temper and loosens the bond between the axle tube and the race, and it shrinks the race because the bead shrinks as it cools, pulling the bearing in with it. It should just about fall out. It takes much less time than the other methods and is safe as long as you don't spatter too much. It also doesn't heat the axle tube much, most of the heat is concentrated at the bearing. I pulled one out of an aluminum BMW control arm this way.

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A lone amateur built the Ark. A large group of professionals built the Titanic.