Thank you for posting, Don. To be honest, we highly recommend that you replace the full roller when the wheel has worn down. There is a lot of risk involved with trying to replace the full wheel, and there is a good chance you could damage the housing.
That said, we do not have a replacement rivet for this roller, but you could take a look at our
81-303 and
81-304 axles to see if you might be able to use them.
Again, I recommend that you replace the entire roller.
