The unit loading on these is so low as to be of little consequence. I would use an EP Moly grease on the drum. Don't over grease.
If you really want to re-plate it, see if you can find an aluminum
anodizer who can redo it for you. It will need to be stripped down to only the aluminum drum with no other parts
. The outside of the drum is hard anodize (dark gray). This is different than ordinary clear anodize (sometimes colored red,blue, gold etc) that we see on many parts
. Before you send it in for a re-do, ask if they will have to strip the other plating off to start. It is important to make sure the plater does hard anodize. We send our stuff to FORT WAYNE HARD ANODIZE in Ft Wane, Indiana.
If you choose to have a sleeve pressed in, I guess a heat shrunk/press fitted SS or bronze liner would be in order. You will need a machine shop. Perhaps an auto re-builder that sleeves engine
cylinders could do it. Probably big cost.
Here is another option - Check out Wolf's Marine
in Benton Harbor, Mi. Liquidation stuff & bargains. Photo
from their floor last weekend. The web site shows a tiny portion of the inventory Home Page
Also, Torresen's Marine
in Muskegon Michigan has salvaged winches from our lightly used great lakes