Finally found the bearing box for the new bearing I put in the generator end housing this last summer.
I got it at a bearing supplier here in town but the part number could probably be cross-referenced if necessary.
The company is NTN corporation and the NTN bearing is a 6205LLBC3/EM
About $7 with tax, unless you prefer to get the Onan bearing (same one) from an Onan dealer but $16 plus tax.