Ya, the 2062 manual tells you to change the bearings yearly. In real life, if you grease them, the bearings last for years. If I was going to "stock" bearings the 2 that I would have would be on the roller on the center belt that brings the crop in, they spin the most, do most of the work, and run in a little dust. During harvest you can feel the bearings to see if they are running warm. And you should store the draper with the belts off and that is a good time to look at the bearings and spin the rollers over.