Zeeman, a lot of the vintage "Hobby" machines (like your Craftsman) used a combination shaft/bearing set-up that can't be disassembled called an "integral shaft bearing". The common name for them is "water pump bearing". Google "water pump bearing" and you will find them pretty easily. The issue with these is that the shafts are typically just that, a straight shaft with no keyways, threads, etc.
The good news is that the shafts are mild steel and easily machinable! Bandsaws of this era usually only have a flat spot on the shaft that the pully set screw bears on, something that you can do yourself with a file, grinder, dremel, etc.
Accurate (or most other bearing suppliers) can get you the proper bearing but it can be a bit expensive. A life hack that i discovered while googling water pump bearing, is that they are commonly used in water pumps, who knew? When sold as an actual water pump replacement bearing, they can be had for dirt cheap! The hard part is finding one that will fit in your machine. Most places only list model numbers with no dimensions but if you scroung around for a bit you can usually find that info. The trick is to find one that has the correct shaft and outside of bearing diameter (a must, obviously) and has workable bearing and over-all shaft lengths. The bearing and over-all shaft length can vary quite a bit, just take some measurments and start searching and comparing prices. I was able to find an inexpensive John Deere WP bearing (less than $10 on E-bay) for my 3-wheel BS by looking around and finding one with a shaft length that worked. Not an exact match to the original, but a workable substitution!