Deck machinery is the special machinery equipment for ship outfitting, mainly including the anchor winch and ship crane installed on deck. Among them, the ship crane is mainly equipped with a series of characteristics, such as compact structure, convenient operation, large lifting weight, quick action, high efficiency and convenient maintenance, etc., in a large bulk cargo ship of 30,000-50,000-ton class, and plays an important role in modern ship deck machinery.
At present, the Marine crane has formed a series of production in China through the introduction and transformation of foreign technology in the past 20 years. Except the ordinary crane, the slimming crane, the double crane and the hose crane have also been produced in series. However, most ship cranes were imported from abroad before 2003, especially the slewing bearing in the rotary mechanism which connected the rotating tower body and fixed base column. As an extremely large ship crane kit, due to the particularity of the use environment, the selection and development design of the ship crane were still blank in China at that time. FRB Bearings work with a domestic Marine machinery factory to select and design slewing bearings.
