These idler pulleys are getting scarce, I just sold my last extra one week to a customer. You can take the pulley and shaft to a machine shop and they can make a new bearing and turn down the scored shaft.

If the dryer has been operated much at all while it was screeching oiling will not do much good at all, once something like this starts making noise it is generally too late for maintenance.

I take it these are the parts you're looking for. If so, I have a friend that lives in Columbus and I know that he had both of them available very recently in new old stock condition. If you're interested I'll get ahold of him and see if he still has them. But with the part numbers shown you may be able to track them down locally.