A bridge crane trolley is an essential component of a bridge crane that allows the hoist to move along the length of the bridge. The trolley consists of wheels that run along the bottom flange of the bridge, and it is typically powered by an electric motor or air-powered system. The trolley can be customized to accommodate different types of hoists and lifting capacities, and it can be designed for single or double girder bridge cranes. The trolley can be operated manually or using a remote control, allowing for precise positioning of the load. Proper maintenance and inspection of the trolley are critical to ensure safe and efficient operation of the bridge crane. Overall, the trolley is an important component of a bridge crane that allows for smooth and precise movement of the load.