I guess Craig thought I was joking with my previous post >>>>> The real test of skill with a gas axe is to remove the inner race from the shaft without damaging the bearing or shaft <<<<<

By chance I came across an old HATZ industrial diesel engine manual when clearing out some old paper work yesterday.

This is the engine type that I saw my uncle use this method, sure enough he re used the crank shaft roller bearings, the engine completed many year service with no problem. I have copied a small section here