Oldenburg G 7

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.

Oldenburg G 7
DRG Class 55.62
An ex-Prussian G 7.1, no. 55 669, in Potsdam on 17 May 1993
Type and origin
Build date1912–1918
Total produced22
Specifications
Configuration:
​
 • Whyte0-8-0
Driver dia.1,350 mm (4 ft 5 in)
Adhesive weight58.6 t (57.7 long tons; 64.6 short tons)
Service weight58.6 t (57.7 long tons; 64.6 short tons)
Boiler pressure12 kgf/cm2 (1.18 MPa; 171 lbf/in2)
Heating surface:
 • Firebox		2.23 m2 (24.0 sq ft)
 • Evaporative180.10 m2 (1,938.6 sq ft)
Cylinders2, compound
Piston stroke660 mm (26 in)
High-pressure cylinder500 mm (19+11⁄16 in)
Low-pressure cylinder750 mm (29+1⁄2 in)
Performance figures
Maximum speed45 km/h (28 mph)
Career
Numbers
  • GOE: 231–235, 246–247, 251–255, 259–263, 272–276
  • DRG: 55 6201–6213

See also

References
    • Hütter, Ingo (2015). Die Dampflokomotiven der Baureihen 54 bis 59 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. p. 262. ISBN 978-3-937189-85-7.
    • Spielhoff, Lothar (1990). Länderbahn-Dampf-Lokomotiven. Band 1: Preußen, Mecklenburg, Oldenburg, Sachsen und Elsaß-Lothringen (in German). Stuttgart: Franckh'sche Verlagshandlung. ISBN 3-440-06145-0.
    • Vandenberghen, J. (1989). La guerre 1914 - 1918 et les locomotives "Armistice", 3. Description des locomotives bavaroises, saxonnes, badoises, mecklebourgeoises, oldenbourgeoises (PDF) (in French). Brussels: SNCB. p. 59.
    • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1978). Dampflokomotiven deutscher Eisenbahnen, Baureihe 41–59 (EFA 1.2) (in German) (3rd ed.). Düsseldorf: Alba. pp. 130–132. ISBN 3-87094-082-4.
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