is this not how you do it anyway? You take the hub off to remove an old bearing and press in a new one don't you? So a hub supplied with the bearing already pressed in is the same, you've just cut out the bearing replacing step? Or is this not...

I think that's just the hub though

https://www.lrparts.net/lr001127.html there is also autodoc, this is for the swedish site but there is also a uk side to them as well not sure if they have the part but you can try...

Hey everyone, one of my rear wheel bearings is on its way out. My next door neighbour is a mechanic and is up for changing it for me. He said he used to be able to get hold of the whole kit with a new bearing already set and ready in a new hub...