Hello Clive, The supply of single rollers I have noticed has been drying up or not provided for a while now however SKF make bearings with the rollers you require. A quick look at my bearings and I came up with SKF 2NO7EV. I didn't mike it but a rough measure with the rule seems right. Fourteen rollers are in this bearing. I also noticed nearby an output half of a Norton Twin crank which also uses the same type of roller bearing.
I can imagine if you buy the rollers single they would be around A$4. That would be over $100. Think you could get two bearing sets for around that with a trade discount and off the shelf. best of luck Alan
