Oil free lubricated bearings are a special type of sliding bearings, whose core feature is that they can effectively reduce friction without adding lubricants before and after use. In the 1960s, with the invention of DU composite bearings, this product gradually developed and matured. In the 1950s, polytetrafluoroethylene (PTFE) began to be used as a bearing material, and the first PTFE self-lubricating DU bearing was launched in 1956. According to their structure, bearings can be divided into four categories: solid embedded, composite, oil containing, and new single material bearings. The main base materials include copper alloys, steel plates, and PTFE composite materials The product adopts a self-lubricating material combination (such as steel/PTFE sintered copper) to achieve maintenance free operation, with a temperature resistance range covering -200 ℃ to+250 ℃, and features high wear resistance and low friction coefficient
