Damplok class 44 of the Austrian Federal Railways (BB?).
? Medium driving axles with smaller wheel flanges
? Clear view between the boiler and the chassis
? Hauls heavy goods trains
With the expansion of the Passau-Wels line for 20 tons axle weight, the powerful three-cylinder locomotives of the class 44 could also be used in Austria from 1938. They were indispensable for transporting heavy, exceptionally long block trains from West Germany to the Linz steelworks. The BB? also transported ore trains from Hieflau – via Amstetten to Linz. After the Second World War, some locomotives continued to operate. However, due to the costly maintenance, the BB? soon scrapped them.