| Oldenburg G 7 DRG Class 55.62 |
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| Wheel arrangement: | 0-8-0 |
| Axle arrangement: | D n2v |
| Service weight: | 58.6 t |
| Adhesive weight: | 58.6 t |
| Top speed: | 45 km/h |
| Driving wheel diameter: | 1,350 mm |
| Cylinder bore: | 500/750 mm |
| Piston stroke: | 660 mm |
| Boiler Overpressure: | 12 bar |
| Grate area: | 2.23 m² |
| Evaporative heating area: | 180.10 m² |
The Oldenburg G 7 steam locomotive was a German 0-8-0 locomotive 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, grouped into DRG Class 55.62 and given numbers 55 6201–55 6213.
Spielhoff, Lothar, Länderbahn-Dampf-Lokomotiven. Band 1: Preußen, Mecklenburg, Oldenburg, Sachsen und Elsaß-Lothringen, Franckh'sche Verlagshandlung, Stuttgart, 1990, ISBN 3-440-06145-0
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