There are many types of chains, but their basic structure is only the following types, and the others are variations of these types. We can see from the above several chain structures that most chains are composed of chain plates, chain pins, shaft sleeves and other components. Other types of chains just make different changes to the chain plates according to different needs. Some are equipped with scrapers on the chain plates, some are equipped with guide bearings on the chain plates, and some are equipped with rollers on the chain plates, etc. These are modifications for different applications.