The Oldenburg G 7 steam locomotive was a class of German locomotives produced for the Grand Duchy of Oldenburg State Railways (Großherzoglich Oldenburgische Eisenbahn). It was an eight-coupled engine, intended for heavy goods train duties, and was based on the Prussian G 7. It had a 1,660 mm diameter boiler located 2,820 mm above the top of the rails in the plate frame, and was equipped with a single Walschaerts valve gear as well as a Lentz valve gear. Thirteen were taken over by the Deutsche Reichsbahn, classified as DRG Class 55.62 and numbered 55 6201–55 6213.
See also Grand Duchy of Oldenburg State Railways List of Oldenburg locomotives and railbuses Länderbahnen
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