It seem that both Dave and I are doing a snow caster refresh/rebuild. Mine is functional with the old bearings but loud like crazy. From the little investigation I did so far, it seems that these are the bearings for my old (70s) snow caster.
Auger bearing: type RX84.
This bearing is also known as:
ZORO: G3800161
Roberts: RX68
Case: C29265
Case: C29264
Airens: 054111
DIMENSIONS:
BORE: 11/16" Hex
O.D. Outside Flange of 2.25" and Outside of Bearing Surface of 2.125"
IR Width: 0.80"
OR Width: 0.625"
One can also use the Fafnir 204KRR2 bearings with 47mm OD, but it needs a sleeve because the auger ID is about 54mm.
Jackshaft bearings. Seems to me the original have the Fafnir 42LST flangettes, indicating a bearing with 42mm OD. I could not find any bearing like that. It also seems that this kit is what our Case parts vendors are selling to replace the original. The kit seems to have the 47MST flangettes, which are (surprise!

) housing a 47mm bearing, the SA204-12. Here's the link to one of the vendors kit, which even includes instructions on how to "make the hole bigger!"

cool
https://www.caseingersollparts.com/stor ... SHAFT.html
Here are dimensions for something like this from a different online source.
It's the line for 3/4 ID that we're interested in. Shows it's using the 47MST flangette/housing. And the SB204-12 bearing. Don't know the difference between the SA204-12 and SB204-12 bearings.