thats a sealed bearing hub. The caps on the end should be a press fit over the axle, and the bearings are seated in the hub shell via press fit too.
theres not much 'rebuilding' that you need to do- just slide off the end caps, push the axle through one end and remove the sealed cartridge bearings. Sealed bearings are widely available through the LBS or any bearing house or industrial supply catalogue. Every sealed bearing has a model number on the seal.
The one in the blog is how I dissassembled my Viscount hub. The Origin8 single does not have any exposed nuts. There is a long bell shaped cover on each end with a little nub of an axle sticking past the cover. Cover has a set screw (which I assume helps retain the cover). Axle can take quick release skewers or bolts screwed in from the ends.
I did not know if the bell shapped covers were screwed into the hub in any way, or are they just held onto the axle by friction (i.e. press) fit.
I completely removed the set screws and they do not seem to do any retaining. Heck, they were not really even very tight. I wonder if they are there as a backup just in case the press fit ever became loose.