We recently purchased a used honey extractor. This is a large stainless steel tub (20 inches in diameter) about 3 feet tall with a spigot at the bottom. Honey frames are inserted around a centrifuge-like device in the center of the tub, and then spun rapidly by hand through a gear mechanism at the top.

This device was used to extract our most recent batch of honey. On the last frame, it stopped.

We opened up the gear box and found the worm gear had disintegrated. 

No luck finding replacement parts online. This thing was apparently made in Italy. The product label is in Italian, and (after translating by Google Translate) roughly says:

Made by (the equivalent of) Sears Italy
Of really good stainless steel
Here are the detailed specs on the steel

Not much help.

So, back to the drawing board.