Top running crane is a lifting equipment that is placed horizontally over workshops, warehouses and yards for lifting materials. They are mounted on rails on top of the building's support structure, allowing the crane to move along the length of the building. Top running overhead crane is the most commonly used crane type which has a fixed track system installed on the top of each runway beam. The lifting capacity of top running overhead crane will not be limited and it can be manufactured to lift loads from 1 ton to 450 tons. Since the crane is supported by steel support columns or existing concrete steel building support structures, it is very suitable for moving extremely heavy loads.

Top-running bridge cranes are often installed in production workshops for lifting equipment or workpieces. Reducing the dead weight of the overhead traveling bridge crane trolley can effectively reduce the dead weight of the crane's main beam and the whole machine, and also reduce the wheel pressure load of the crane on the workshop corbels.