What is used to cover the chain in a chain type coupling?

In a chain type coupling, the component used to cover the chain is known as a shroud. A shroud serves several important purposes: it protects the chain from dirt, debris, and contaminants that could adversely affect its operation and longevity. Additionally, it enhances safety by preventing accidental contact with the moving chain, which could lead to injury or damage.

The use of a shroud is typical in applications where the chain is exposed to the environment, ensuring that it remains clean and operates smoothly. The design of the shroud allows for airflow, which can help with cooling the chain, particularly in applications with higher loads or speeds.

While terms like cover, case, and guard might seem like reasonable options as they are also related to protective elements in mechanical designs, they are not specifically used in the context of chain type couplings. A cover refers more generally to any type of protective layer, a case could imply an enclosure of sorts, and a guard is often used for barriers in various applications, but none specifically identify the protective component for a chain coupling as accurately as shroud does.