A crane engine is a crane-powered, truck-based engine that can be used to build structures and transport heavy objects.
It is commonly used in the construction of large infrastructure projects such as railways, airports, ports and bridges.
Harbor freight engines are generally used in construction of high-speed rail.
They are typically built on a platform that can carry up to two containers.
The container can carry about 30 tonnes of materials such as cement, concrete, timber, and other materials.
Harbour freight engines also have the advantage of being able to use low-cost materials.
The fuel and other maintenance costs are very low.