Russian locomotive class O

9.672 m (31 ft 8+34 in), w/o tenderLoco weightEngine only: 52 to 55 long tons (53 to 56 t; 58 to 62 short tons)Fuel typeCoalFirebox:​ • Grate area1.85 m2 (19.9 sq ft)Boiler pressureVarious,
from: 11 kgf/cm2 (1.08 MPa; 156 psi)
to: 15 kgf/cm2 (1.47 MPa; 213 psi)CylindersTwo, outsideCylinder sizeSimple:
500 mm × 650 mm (19.69 in × 25.59 in)
Compound:
hp: 500 mm × 650 mm (19.69 in × 25.59 in)
lp: 730 mm × 650 mm (28.74 in × 25.59 in)
Career
ClassО


The Russian steam locomotive class O (from Russian: Основной) was an early type of Russian steam locomotives. 9,129 locomotives were built between 1890 and 1928; hence it was the second most numerous class of locomotive in Russia, after E class,[1] which was a unique number even on the international level.

Variants

Basic variants were early Od and OD (Russian: Од, OД) with Joy valve gear and most numerous later OV (OВ) with Walschaerts valve gear. Some locomotives were built as two cylinder simple expansion and others as two cylinder compounds.[2]

Armoured locomotives

During World War I, the Russian Civil War and the Eastern Front of World War II O-class locomotives were widely used as standard armoured locomotives in armoured trains due to rugged construction and low silhouette. Relatively lightweight, these locomotives could carry more armor without overloading the track.

Gallery

See also

References

  1. ^ Rakov, V.A. (1995). Lokomotivy otechestvennyh zheleznyh dorog 1845-1955 (in Russian). Moscow. pp. 152 and 190. ISBN 5-277-00821-7.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ^ Le Fleming, H.M.; Price, J.H. (1960). Russian Steam Locomotives. London: John Marshbank Ltd. pp. 34–35.

External links

  • The Moscow Railway Museum at Rizhsky Rail Terminal
  • Report on a visit to the Varshavsky Rail Terminal
Wikimedia Commons has media related to Russian locomotive class О.
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