FS Class 122

FS Class 122 were 2-4-0 steam locomotives with tenders, designed for hauling passenger trains. The Italian State Railways (FS) acquired 32 of them as war reparations after World War I from the Austrian Südbahn (SB).

FS Class 122
SB 18.532, a locomotive of the same type as FS 122
Type and origin
Power typeSteam
BuilderFloridsdorf and Sigl
Build date1869–1872
Total produced32 (to FS)
Specifications
Configuration:
​
 • Whyte2-4-0
Gauge1,435 mm (4 ft 8 1⁄2 in)
Leading dia.1.264 metres
Driver dia.1.58 metres
Length8.27 metres
Loco weight32.4 tonnes
Fuel typeCoal
Cylinders2 outside
Cylinder size411 mm x 632 mm
Valve gearOutside Stephenson
Performance figures
Maximum speed65 km/h
Power output310 kW

History

Following the reparations resulting from the First World War, 32 units arrived at the Italian FS, which classified them as Class 122. Deliveries took place in two phases: 23 units were delivered by 1919, while the other nine were delivered following subsequent agreements between 1922 and 1923 concerning the territorial distribution of the railway lines and Sudbahn plants. Being obsolete machines, they were soon withdrawn and had been scrapped by the end of the 1920s.

Technical details

The locomotives had a 2-4-0 wheel arrangement. The engine was simple expansion with two outside cylinders and outside Stephenson valve gear. The tender had three axles.

Numbering
FS numberSB numberBuilderBuild dateScrapping date
122.00118.467Floridsdorf18731928
122.00218.468Floridsdorf1873?
122.00318.469Floridsdorf1873?
122.00418.470Floridsdorf1873?
122.00518.471Floridsdorf1873?
122.00618.472Floridsdorf1873?
122.00718.473Sigl1872?
122.00818.475Sigl1872?
122.00918.476Sigl18721928
122.01018.477Sigl18721928
122.01118.478Sigl1872?
122.01218.479Sigl18721929
122.01318.480Sigl1872?
122.01418.481Sigl1872?
122.01518.482Sigl18721924
122.01618.483Sigl1872?
122.01718.485Sigl1872?
122.01818.488Sigl1872?
122.01918.489Sigl1872?
122.02018.474Sigl1872?
122.02118.491Sigl18691922
122.02218.493Sigl18691928
122.02318.496Sigl18691928
122.02418.497Sigl1869?
122.02518.498Sigl18691929
122.02618.499Sigl1869?
122.02718.484Sigl1872?
122.02818.487Sigl1872?
122.02918.486Sigl1872?
122.03018.490Sigl1869?
122.03118.492Sigl1869?
122.03218.495Sigl1869?
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References

    Further reading
    • Cornolò, Giovanni (2009). Locomotive di preda bellica. Parma: Ermanno Albertelli Editore. ISBN 978-88-87372-74-8.
    • Dietrich, Herbert (1994). Die Südbahn und ihre Vorläufer. Vienna: Bohmann. ISBN 3-7002-0871-5.
    • Kalla-Bishop, P.M. (1986). Italian State Railways Steam Locomotives. Abingdon: Tourret. ISBN 0-905878-03-5.
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