A pic is worth a thousand words.
That hub is meant to have an Arai Drum brake installed. They are only available on the used market in their unmolested original form. From what I remember Tandems East (?) may have some reconditioned units available. But the cooling fins have been machined off sort of defeating the purpose of the unit.
I have an original unit I bought used but never put in to service. PM if interested.
FWIW: I know of no reason a Phil hub could/should ever need replacement. New bearings press in/press out with a minimal of shop time. Even then, Phil bearings are not known for short lifespans. You'll probably have that hub in a few more rims before that time is due.
Last edited by base2; 01-08-24 at 04:22 PM.