The gist is in the title. Picked up a Craigslist Schwinn Crisscross for my girlfriend today and just finished pulling the bottom bracket. The bearings in there are pretty hurt; the grease had long since dried out. Luckily the spindle's ok.
Figure a bunch of new bearings will be much cheaper than a new cartridge BB.
So, how do I figure out what size the little buggers are, and does Home Depot or Loews carry loose ball bearings? My local shop is closed on Sundays, which I respect a lot, but it doesn't help me in my quest to rebuild this bike for my girl.