Graphite copper sleeves are mainly based on high-strength copper alloys (also known as JDB solid inlaid self-lubricating bearings). Specially formulated solid lubricants are used as the lubricant medium to replace traditional oil tank copper sleeves. It can be used in the environment where it is not easy to refuel, long-term oil shortage or oil-free, which makes up for the lack of regular refueling of traditional copper sleeves. It has the characteristics of high bearing capacity, impact resistance, high temperature resistance, strong self-lubricating ability, etc. It is especially suitable for occasions where it is difficult to lubricate and form an oil film such as heavy load, low speed, reciprocation or swing. Because of its high hardness and strength, and low cost, its service life is twice as long as that of ordinary copper sleeves at low speed and heavy load, so it is favored by customers. Different sizes and materials can be customized according to customer requirements.