Bandsaw-tire-warehouse has the bearing with hoop for $26. For $56 the factory sells the control sheeve with new bearing. I did the heat-the-bearing-and-melt-grease-into-the-dry-bearing trick. I don't have but a few hours on it but if it fails I'll buy a new sheeve with bearing.
1986 510, jointer, bandsaw, belt sander, scroll saw, jigsaw and lots of accessories. Shopsmith woodworking bench too!