What is the difference between a bridge crane and a monorail crane?

A bridge crane is an overhead crane system that consists of a runway beam supported by two parallel runways, allowing the crane to move along the length of the beam. This type of crane is typically used for heavy lifting and material handling in industrial settings.
On the other hand, a monorail crane is a type of overhead crane that operates on a single runway beam, rather than two parallel runways. It is often used for more specific and targeted lifting and material handling tasks, and is commonly used in smaller work areas or for transporting materials along a fixed path.
In summary, the main difference between a bridge crane and a monorail crane lies in the configuration of their runways, with a bridge crane having two parallel runways and a monorail crane operating on a single runway beam.