These ball bearing rollers are for replacing missing or broken rollers on your antique Yawman and Erbe Manufacturing tanker desk. Rolling smoothness is greatly improved over the original design. These rollers press onto the axles The bearings are shielded to assure long life of smooth rolling. The plastic adapter parts are a combination of molded and 3d printed plastic. Color of the rollers may vary from the photo.
The kit comes with 4 ball bearings, 2 large roller OD adapters, 2 large roller ID adapters, 2 small roller OD adapters and 2 small roller ID adapters. These combine to make large and small roller assemblies. The large rollers attach to the desk base and the small rollers attach to the drawer. The kit repairs one drawer. The machined adapters easily press onto the bearings and desk axles.
The reason there are extra parts is that the Y&E desk rollers are similar to the Steelcase Narrow style roller but there aren't enough of the right parts in one molded set to make a Y&E drawer set.
I designed these at the request of a customer. Perhaps they will be what you need too. Drilling of the replacement rollers shouldn't be necessary, please contact me if the rollers don't fit or turn freely.
Please contact me if you have another "impossible to find" part, I can probably help you, especially if it appears other people would be interested in it.