The good news is that it is an easy fix and not expensive. When I replace bearings I tend to buy an extra set. They are only a few bucks and I wire tie them in a zippy bag to the machine in some out of the way place for next time should it appear. I do tend to upgrade the bearings when I replace. Like a lot of factory blades the bearings are what is reasonable for the price point. A sealed (versus shielded) upgrade doesn't hurt. I am still working on a tube of guide bearings that I bought for one of my bandsaws over 15 years ago. They were sure cheaper then and I have them when I need them.