Port large-scale lifting equipment, including quayside container cranes, gantry cranes, portal cranes, etc., are the main lifting equipment for port loading and unloading operations. With the continuous development of hoisting machinery technology, the requirements for various working conditions are increasing, and the technical content of each link of the constituted equipment is required to be improved. Bearings, as the main components used to support the fixed shaft and bear the load in the machine, have obvious functions. Without the use of various types of bearings, the various actions of the equipment will not operate normally. The large cranes used in the seaport have long been working under oceanic climate conditions with a lot of salt fog, high humidity and large temperature differences. Large cranes working in inland river ports are also affected by the industrial atmosphere and harsh weather; when large equipment in the port is in operation, multiple actions are carried out at the same time, and multiple loads are superimposed at the same time, which have a greater impact on the use of bearings. Guangyang Bearing understands the customer's usage, and according to the customer's requirements, produces a series of products that meet the customer's requirements, reaching the international advanced level.