Don't give up on the project just yet. I'm out of town right now and won't be returning until the end of next week. When I do get home I can look up the bearings in a set of catalogs I used for machine design. There are 7 volumes each about 2" thick. They spec out and cross reference supposedly all bearings made from about 1930 to 2000. I've used them in the past to locate hard to find precision bearings in the past. If I remember correctly they were published by the now defunct International Bearing Institute. The standards have been incorporated into the ISO system, but it's usually a nightmare to find them under the new system
In many cases the original part number has been superseded several times between the original introduction and the latest version. They could also be made by different manufacturers with different part numbers due to slight differences in materials.
It would help if you could post a picture of each with the part numbers as legible as possible. A clear picture of each side of each bearing with as much grease and crud removed as possible would be great.
Often times I have contacted a business called "Locate Ball Bearings" with a list of cross referenced part numbers to find obsolete and hard to find bearings. They've been able to come across several times and with prices far more reasonable than anyone else in the business. This company buys out overstock and obsolete stock as well as buying out failed or closed businesses. They literally have hundreds of thousands of bearings in stock.
