I've used "cones" like that before, but I have no idea where you could find a replacement. Nothing came up on ebay. Are there any other bike shops relatively nearby? Sometimes it's worth going that extra mile if you really need the part. Those seem like a good deal for $50, and if you can get them running again for another $5 plus gas money I'd say it's worth it.
Originally Posted by
rustybrown
Stainless steel sleeve, as close as you can get to the inner diameter of the bearing. Worse comes to worse, you could drill the threads out of a chainring bolt and slide it on down. Use a two small nuts to hold the race in position. Or epoxy/loctite. Washer to cover that mess up and regular locknuts on top.
I think this would work, from the looks of it you'd need to remove the bearing to thread on the inside nut, and you'd need to somehow get it perfectly in position before putting the bearing back in. I don't think any nut would fit in the gap between the bearing and axle.