Specific design of sealed-in lubrication maintenance for bearing system in each link makes the complete chain work to its optimum wear life. For KMC o-ring chain, superior alloy steel is adopted and heat-treated to provide best performance in strength. In addition, special formulated grease contained by o-ring in the interface between solid bushing and hardened pin keeps giving constant interior lubrication, and extremely enhances the efficiency and effects on friction elimination during operation.
