I'm digging for a while now, and can not find any helpful chart for chain roller diameters e.g. Shimano 8,9,10,11,12 speed. It differs of course depending on the manufacturer and the purpose. We know that ANSI standard 40R chain roller is 0.312" (7.9mm). We know some measurements like this one e.g. https://handsonbike.blogspot.com/2022/01/shimano-11-speed-vs-sram-axs-12-speed.html but we don't know how accurate are they.
Does manufacturer share such size chart? Is there any? Somewhere? I don't believe designers measure every possible chain by hand every time.
