ive had a problem like this before this is what i did , ps it worked for my but i will accept no responsibility if you fuck it up ..try if you dare
this is a laaast resort !!!!
what you need
needle
very thin screwdriver
thicker screw driver
needle nose plyers
ok your bearing should have a metal shield
get a pin , go round outside of bearing find the C clip , hook it out then remove shield
normally there will be a piece of rubber in there that holds all the balls uses needle nose plyers to pull out
then uses thin screwdriver to get all the ball bearings to one side then put big screwdriver in middle race and lever it .... !POP!
ball bearings will go every were now you have space to get a screwdriver and hammer out outer race plus its easier to get out outer bearing as-well now .
only do this if you have spare bearing , once you do it it can never be used again !