I can get the hub, and the bearing.
But getting the part the bearing sits in and fastening that to a work
bench is beyond my ability and rather costly.
I was hoping there was a product out there that would do this.

You can buy hub units that have the lug bolts on one side and a four
bolt flange on the other allowing you to mount both sides - one to a
base and the other to the turning table. Would this work for you?