RK Machinery offers the development of non-standard cargo lifting and manipulation systems; single girder top running crane with the bottom hooking of hoist and single girder radial top running crane (one end of the crane is fixed in the rotation bearing, while the other end is moving along the radius rail), as well as double girder top running crane with the top hooking of hoist. We can equip cranes with weight control of the lifted cargo. If several top running cranes are operated within the span length, there is an option to equip cranes with the collision control system for higher safety and prevention of the damage of cranes.