Agreed - such a small task to ensure the saw’s future.If you can hear them, then it's time. They aren't going to get any better on their own. Most likely you have 6203 2RS bearings which are a little under three bucks each at Fastenal. Yeah, they are Chinese, but my daughter's Honda Civic has one in the belt tension pulley that has over 300K miles on it. I've got over 40 K on the one I put in the Ford Van.
The arbor bearings will have the same hours as the motor bearings. At this stage there is no play, they feel smooth. Will keep an eye on it, if there are signs will replace them all.Agreed - such a small task to ensure the saw’s future.