I made a handy tool for removing stubborn rear bearings out of a cheap screwdriver.
I took a std. flat blade (about 1/4" wide ) screwdriver, and bent just the tip (1/8" ) over 90 degrees. Then I ground it thin enough to catch on the inside edge of the inner race of the R. bearing.
Put the case on a block of wood with the front bearing opening pointing straight up. Heat using your favorite method...and go down in thru the F. opening with the tool. Catch on the lip of the inner race w/ the bent over edge of the tool, then tap gently but firmly w/ a light hammer. Reposition the tool between taps so you don't get the bearing cocked in the bore as it's driven out.

This method has never failed...