Depending on what you need and if the part is the same as the current Shopsmith company, opposed to previous owners of the “Companies Shopsmith” over the last 72 years (Yes 72 years) you may be able to buy it from Shopsmith as some parts are the same, some upgraded assemblies can interchange / upgrade / convert what you have now opposed to what was made later.
Read a document titled Buying a Used Shopsmith V2 that appears under the My Google Drive Link under post In Maintenance and Repair Forum titled Shopsmith Large Format Drawings, Illustrations and More”
It’s on the main page under My Google Drive link.
Next find the folder titled Bearings under that link.
In it find “Shopsmith Bearings Guide”
In it you will find the family tree of the models with extensive material to help you determine what you believe you have allowing for previous owners and 3rd Party conversions that may be present. Some approved by OEM and some perhaps not as folks found ways to do their own repairs and modifications through the decades.
There a a number of folks who rebuild Shopsmith (including Shopsmith)
One fellow Jacob Anderson has selected parts and services available outside of Shopsmith. Most interestingly he has a series of FREE YouTube videos you most certainly will find informative. There’s an active link to his site you can click inside the Shopsmith Bearings Guide. You can Google Jacob Anderson and the Word Shopsmith and find it as well.
Bandsaw Tire Warehouse on eBay has a store that has some parts.
eBay has a lot of folks selling “Stuff for Shopsmith” but that “Stuff” may not fit Your Stuff so it’s vital to read those two documents on My Google Drive link to learn what you have vs what someone just intends to sell you.
There is a Shopsmith Owner’s Group and a Shopsmith Sales Group on Facebook (Independent of Shopsmith themselves)
Forum members are willing to help but your own research in knowing what you have and need to do is an essential first action.
Start here and work forward. viewtopic.php?p=185690#p185690
Everett L. Davis