Does it have bolt-on teeth, or are the teeth made from square bar that has a carbide cutter attached to it?
The bolt-on style can be model/brand specific, but the square bar type that are held onto the wheel with the clamping halves and allen head bolts are often swappable between manufacturers.
Here's the type I mean:
They're used on many Vermeer, Dosko, Rayco models, as well as others I'm sure.
Look at this eBay page and see if any match up with yours: