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Württemberg T 5
German Reichsbahn class 750
Germany | 1910 | 96 produced
T 5 No. 1205 on a works photo of Maschinenfabrik Esslingen
T 5 No. 1205 on a works photo of Maschinenfabrik Esslingen
Bernd Beck: „Schwäbische Eisenbahn”

For the increased traffic on the suburban routes of the growing industrial cities in Württemberg, the state railways had a tank locomotive developed in Esslingen from 1908, later called the T 5. A distinctive feature of the machines was the very long wheelbase, in order to be able to guarantee smooth running at high speeds even with a small wheel diameter

The chassis of the T 5 consisted of three coupled axles that were arranged at a relatively large distance and one leading and one trailing axle each, which were designed as Adams axles. With a fixed wheel base of 4,000 mm, the engines ran extraordinarily quietly, but the diameter of the coupled wheels of only 1,450 mm allowed a top speed of initially 70 km/h. The supplies were quite considerable for a tank locomotive and included 8.66 m³ of water and 3 tonnes of coal. Due to the well thought-out design, the locomotive had an empty weight of only 52 tonnes and remained under 70 tonnes with full supplies.

Despite the low speed, the locomotive proved itself. For this reason, it was not only used as planned on shorter main lines in regular passenger transport, but was also used to some extent to pull express trains. The latter was the case for example on the Gäubahn between Immendingen and Stuttgart, where the route largely follows the river Neckar and its tributaries and therefore has many curves.

In the period from 1910 to 1920, 96 units were produced, of which only three had to be handed over to France as reparations after the First World War. At the Reichsbahn, the engines were assigned to the class 750 and given the numbers 75 001 to 75 093. Due to their smooth running, they remained in use in almost the same number for a long time, so that the Bundesbahn was able to take over 89 of the 93 engines. Almost all examples except one were retired by 1959. The last T 5 initially remained in service until 1963, before finally becoming a museum locomotive. However, it could not last long in this role, and so she was scrapped five years later.

Variant1910 variant1912 variant1914 variant
General
Built1910-19111912-19131914-1920
ManufacturerEsslingen
Axle config2-6-2T (Prairie) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length40 ft 0 5/16 in
Wheelbase28 ft 6 1/2 in
Fixed wheelbase13 ft 1 1/2 in
Empty weight114,640 lbs112,656 lbs119,049 lbs
Service weight153,221 lbs156,969 lbs163,362 lbs
Adhesive weight96,783 lbs98,987 lbs102,515 lbs
Axle load32,187 lbs33,003 lbs34,172 lbs
Water capacity2,219 us gal2,642 us gal
Fuel capacity6,614 lbs (coal)8,818 lbs (coal)
Power
Power sourcesteam
Indicated power868 hp (647 kW)
Optimal speed23 mph
Top speed43 mph
Starting effort24,189 lbf
Power Plant
Driver diameter57.1 in
Boiler pressure174 psi
Expansion typesimple
Cylinderstwo, 19 11/16 x 24 1/8 in
Boiler
Grate area20.8 sq ft
Firebox area111.9 sq ft
Tube heating area1,066.7 sq ft1,096.8 sq ft1,072.1 sq ft
Evaporative heating area1,178.6 sq ft1,208.8 sq ft1,184 sq ft
Superheater area415.5 sq ft362.7 sq ft414.4 sq ft
Total heating area1,594.1 sq ft1,571.5 sq ft1,598.4 sq ft
Calculated Values
steam locomotive
passenger
tank locomotive
Eugen Kittel
last changed: 01/2022
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