Bridge cranes are essential parts of foundries of grey cast iron as well as for castings of steel bronze, non-ferrous metals and aluminium. The built-in cranes can be categorized as follows:
- Cranes to be used for filling the smelting furnaces are usually fitted with electromagnets or hydraulic grabs and weighing devices.
- Cranes to be used for transporting the melt are specialized and should come with additional safety devices.
- Cranes for handling the finished products are usually of the standardized type. Special conditions apply for facilities with machines used for pressure casting. In those cases cranes are used mostly for the maintenance of machines and the replacement of tools.
In all of the above circumstances, cranes are exposed to difficult working conditions due to high temperatures and dust.