German Class 45
steam locomotives were standard locomotives (''
Einheitslokomotiven'') designed by the
Deutsche Reichsbahn for hauling
goods trains.
History
The Class 45 engines were the most powerful steam locomotives ever operated in Germany. They were built between 1936 and 1937 by the firm of
Henschel. After the first two engines entered service, a further 26 units were delivered in 1940. However, the third order for another 103 machines was cancelled in 1941, because the outbreak of the
Second World War favoured the construction of simpler wartime locomotives, the so-called ''
Kriegslokomotiven''. The Class 45s were given the operating numbers 45 001 – 45 028.
After the war, boiler damage appeared very quickly that made a reduction of the
boiler overpressure
Overpressure (or blast overpressure) is the pressure caused by a shock wave over and above normal atmospheric pressure. The shock wave may be caused by sonic boom or by explosion, and the resulting overpressure receives particular attention when m ...
to 16 bar necessary. From 1950 therefore several
Deutsche Bundesbahn machines were equipped with an outer
firebox with a combustion chamber and a mechanical underfeed stoker (''Rostbeschicker''). The engines with operating numbers 45 010, 45 016, 45 019, 45 021 and 45 023 were provided with welded boilers and underfeed stoker equipment.
In East Germany, the
Deutsche Reichsbahn's sole example, 45 024, was rebuilt into high pressure variant and renumbered H 45 024. It proved to be a failure and was retired in 1959. Parts of this locomotive (outside
cylinders
A cylinder (from ) has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. In elementary geometry, it is considered a prism with a circle as its base.
A cylinder may also be defined as an infini ...
,
trailing wheels and the rear section of the
locomotive frame) were used in building engine no.
18 201.

In 1968 the Deutsche Bundesbahn only had three examples left, which were used as braking and experimental engines by the Bundesbahn Central Office in
Munich and
Minden
Minden () is a middle-sized town in the very north-east of North Rhine-Westphalia, Germany, the greatest town between Bielefeld and Hanover. It is the capital of the district (''Kreis'') of Minden-Lübbecke, which is part of the region of Detm ...
. They were no. 45 023, which was stabled in Munich, and nos. 45 010 and 45 019, which were stationed at Minden. On the evening of 17 October 2005 a fire destroyed the locomotive shed of the
Nuremberg Transport Museum in Nuremberg, as a result of which the last preserved example of this class, the 45 010, was badly damaged. Plans were put in hand to restore it and this was completed during 2012.
This class was initially a faulty design, similar to the
DRB Class 06, because of its poor boiler. Following replacement of the boiler and the introduction of mechanical stoking the true qualities of this locomotive became clear. As well as being used as braking locomotives for the Bundesbahn Central Office, in their final years numbers 45 019 and 45 010 were used time and again for those heavy goods train duties that the
Class 44 locomotives had difficulties with.
The vehicles were coupled with 2'3 T 38
tenders. Those with underfeed stokers had 2'3 T 29 Stoker tenders.
See also
*
List of DRG locomotives and railbuses
References
*
*
{{DRG locomotives
45
1′E1′ h3 locomotives
45
Henschel locomotives
Railway locomotives introduced in 1936
Standard gauge locomotives of Germany
2-10-2 locomotives
Freight locomotives