The bale-out furnaces of the TM series were developed especially for use at different casting locations. The furnaces are designed to be transported by forklift truck and come with a plug-in connection to the switchgear. By forklift truck the furnace can be moved to the premelting furnace for filling and then to different casting locations. Special models for alfin-bonding can also be offered. These models have a large bath surface for immersing piston ring carriers and a relatively small crucible volume at the same time.