Removing wheel bearings without a press!?

once you have a nice groove cut in the inner race with a die grinder you can hit it in that groove with a dull chisel and shop hammer . The race will crack and slide right off , no damage to axle.
Bolt the axle to a wheel so it stands up drop the new bearing on and follow with a piece of pipe longer than the axle. Now stand above it ,like on a truck tail gate, and have at it with a 12 lb. sledge hammer. Anti sieze compund or even a little WD-40 helps. Hope you are young and strong.