On AJS/Matchless the wheel bearings are tapered roller bearings like a BSA M20 wheel bearing. But the problem is that unlike a M20 where the bearing has an inner race, on a AJS/Matchless the inner bearing race is the wheel axle. When you went to the dealer many years ago to get a new wheel bearings, the one part number was the whole axle bearing assembly (axle, outer race and bearing). The outer race was also not a standard size. Andrew Engineering used to make a modern replacement for the bearings.
If you want to convert to regular bearing you will need to make a new axle and spacers. So a lathe is a necessity.
The thing is, this antiquated forum system does not send out notifications, and for people only looking once a month, it might seem ungrateful, but he has already found a set of bearings I heard.