I just ordered one from Van's about two days ago. I think one of mine dropped onto the shop floor and I must have vacuumed it up. Anyway, I ordered it using the Com-3-5 number and they knew what it was. Two day delivery was expensive but...... the bearing was cheap....like $0.75!
Cheers, Pete
PS. I asked them how you change one, and I was told to drill out the rivets and install a new one and rivet the original pieces back together. I asked if the tiny pinholes in the outer bearing shell were for lubrication. They were not sure but they just oil them once in a while!?!?