Port large lifting equipment, including shore container crane, gantry crane, gantry crane, are the main lifting equipment for port loading and unloading operations. With the continuous development of lifting machinery technology, the improvement of the requirements for various working conditions, and the improvement of the technical content of each link of the equipment. Bearing as a mechanical used to support the fixed shaft and bear the load of the main component, its role is obvious. If there is no use of all kinds of bearings, each action of the equipment will not be able to operate normally. Large cranes used in seaports work under the Marine climate conditions with lots of salt spray, high humidity and large temperature difference for a long time. Large cranes working in inland ports will also be affected by industrial atmosphere and bad weather; When large equipment in port is in operation, multiple actions are carried out at the same time, and a variety of loads are superimposed at the same time, which have a great influence on the use of bearings. Guangyang bearing in understanding the use of customers, according to customer requirements, into a series of production to meet customer requirements of products, to reach the international advanced level.