Galvanising layer is a similar thickness to nickel plating or TiN coating, about 0.1% on the roller diameter. Given that roller chains work pretty well at 0.5% elongation, I can't see the plating being a problem even if the manufacturer completely forgot to allow for it in his tolerance calculations.
Galvanising layer is a similar thickness to nickel plating or TiN coating, about 0.1% on the roller diameter. Given that roller chains work pretty well at 0.5% elongation, I can't see the plating being a problem even if the manufacturer completely forgot to allow for it in his tolerance calculations.