Frank if it's running a little slow then shut it down until you get the bearing fixed. The drag on it can burn windings out. Bearings are generic so chances are that any local shop that sells them will either have one or can get one pretty quick. It should only be a 2-3 hr job to change them at most, faster if you are set up with the right tools.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.