If the axle isn't suck on the outer bearing, you could push the axle in. Then use a hammer and a small chisel, putty knife, or screwdriver to separate the halves of the flange. Yes there are 2 pieces to them and sometimes they separate easily, and sometimes they don't. Then take a big hammer and whack the outer race of the bearing really hard. It will shatter into several chunks. Then you will be able to remove the inside portion of the flange. From there you could pull the axle out a little and remove the set screws.
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