I don't know if it fits in your project: you could also shrink-fit an ring of mild steel on the outside. In the ring you can easily make aligning threaded holes.

An alternative idea (Kudo to @Sanchises) would be to make the bearing larger and insert an tube of mild steel, similar the the entended flange bearing.

I don't know if it fits in your project: you could also shrink-fit an ring of mild steel on the outside. In the ring you can easily make aligning threaded holes.

An alternative idea (Kudo to @Sanchises) would be to make the bearing larger and insert an tube of mild steel, similar the entended flange bearing.

I don't know if it fits in your project: you could also shrink-fit an ring of mild steel on the outside. In the ring you can easily make aligning threaded holes

I don't know if it fits in your project: you could also shrink-fit an ring of mild steel on the outside. In the ring you can easily make aligning threaded holes.

An alternative idea (Kudo to @Sanchises) would be to make the bearing larger and insert an tube of mild steel, similar the the entended flange bearing.