I used a dremel cutoff wheel and a cold chisel to split bearing races on stubborn rear axle bearing at the parts store's machine shop..
You do need a good whallop with a heavy hammer to crack the bearing race the rest of the way,but not so hard the chisel digs into the part the bearing seats on..
--wear safety goggles and a shop apron though--I didn't wear the apron one day,next morning after a bearing race shattered when I smacked it the afternoon before,my belly button felt weird..pulled up my shirt,and found a shard sticking out that was about 1/2" long--had been bleeding too!--I went to the E.R. to get it removed--had a infection afterwards that took quite awhile to heal,had to get a tetanus shot..pretty weird I never felt it go in..!