No, it's a standard automotive type hub, just heavy duty.Good job improvising to keep more dirt out. Is it an ez-lube?
I called Morryde and asked how often and how much the grease zerks should be greased. They said, without any doubt, do not ever grease them. So I asked why would they have installed grease zerks they didn't want greased? The answer was their supplier puts grease zerks on them, but they shouldn't be used or it will push the seals out.I see a grease nipple there, would you need to disassemble it for inspection later?