40 Roller Chain is some of the most common and widely used roller chain on the market. This chain is found on anything from agricultural equipment to various industrial applications. RollerChainSupply.com provides brands such and Diamond Sapphire, John King USA, Senqcia Maxco (Formerly Hitachi) and Allied Locke. Roller Chain Supply is dedicated to bringing you a cost effective solution for your roller chain needs. Don't see what you're looking for? Give us a call and let one of our dedicated procurement specialists help you eliminate downtime.