Doug....
I recall the motor bearing number being something like, 638 but I know that that's not totally correct. It contains those numbers-I know the first digit is a 6. This bearing is a basic bearing that is used in many other motors, as well. It's very common so don't worry, it is available.
Marc Turbyfill in Spokane WA will know exactly what you need. Contact him at 509-327-4662.