Been a while since I have needed to source bearings for obsolete machinery but suggest you take whatever bits you have to a bearings supply joint, and if they don't seem interested try another place.
One thing I discovered decades ago is that most bearing manufacturers may only make so-called sealed bearings and the part number may differ from the unsealed original but you can just get a sharp knife or pick and remove the seal/s.
Last edited by MowingManiac; 26 minutes ago.
