This is one option without having to fabricate any or many parts.
https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=725027#Post725027

Light or heavy axle? this is a picture of the 2 ton axle, see that it has a little "hub cap" held on with 6 small bolts.
https://picasaweb.google.com/lh/photo/eh2EncNXFeAcdPNVoJaNT9MTjNZETYmyPJy0liipFm0?feat=directlink


The light axle has a more normal looking sheet metal cap


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-