When designing a chain drive structure, what should be paid attention to when oiling the chain?
(1) When applying oil to the chain, the oil should be injected into the gaps between the moving joints of the chain and evenly distributed across the width of the chain.
(2) Lubricating oil should be applied to the loose side, because the chain link is in a loose state at this time, and the lubricating oil can easily enter between the friction surfaces.