T 9.3
| Prussian T 9.3 DRG Class 91.3–18, 91.20 ÖBB 691, PKP Class TKi 3 |
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|---|---|
| Number(s): | DRG 91 303–1836 DRG 91 2001–2010 |
| Quantity: | 2,060 |
| Year(s) of manufacture: | 1900ff. |
| Retired: | 1971 |
| Axle arrangement: | 1'C |
| Gauge: | 1,435 mm |
| Length over buffers: | 10,700 mm |
| Service weight: | 46.1 t |
| Adhesive weight: | 36.1 t |
| Axle load: | 15.6 t |
| Top speed: | 65 km/h |
| Indicated Power: | 346 kW |
| Driving wheel diameter: | 1,350 mm |
| Leading wheel diameter: | 1,000 mm |
| Cylinder bore: | 450 mm |
| Piston stroke: | 630 mm |
| Boiler Overpressure: | 12 bar |
| Grate area: | 1.50 m² |
| Evaporative heating area: | 103.66 m² |
Class T 9.3 of the Prussian state railways were tank locomotives that were used both in passenger and freight train services. A total of 2,060 were of this type were built for the Prussian state railways (including those engines from the East Prussian Southern Railway which was nationalised in 1903). The Royal Württemberg State Railways procured a further 10 examples as the Württemberg T 9. The Imperial Railways in Alsace-Lorraine had bought a total of 132 T 9.3s. Even various private railways took delivery of the T 9.3. In 1925 it was included by the Deutsche Reichsbahn as DRG Class 91.3-18 and 91.20 in its numbering plan.
This was an evolutionary development of the Prussian T 9.2, in which the main difference was the use of a Krauss-Helmholtz bogie instead of an Adams axle. That meant that its top speed could be increased to 60 km/h, and later even to 65 km/h. The Reichsbahn took over 1,503 machines from Prussia as 91 303 - 1805, of which ten T9.3s originally came from the Imperial Railways in Alsace-Lorraine; 31 from the Saar Railway as 91 1806 - 1836 and 10 Württemberg T 9s as 91 2001 - 2010. In the Second World War more locomotives were added from Belgium as numbers 91 1837 - 1844.
In the early 1950s the Deutsche Reichsbahn (GDR) took over yet more T 9.3s from private railways, with the numbers 91 6501, 6576, 6577, 6581 and 6582, some of which had been converted to superheating.
Their retirement began after 1945 and was completed in the Deutsche Bundesbahn in 1964 and in the Deutsche Reichsbahn (GDR) in 1971.
Six T 9.3s remained in Austria after the Second World War. Two were handed over to the SZD in 1948 (91 1700 and 1822), two were rather quickly retired (91 1421 in 1951 and 91 1314 in 1952). The remaining two engines, 91 1207 and 91 1347, formed ÖBB Class 691 retaining their serial numbers. Both were used in the St. Pölten region and retired in 1957.
In Germany two have been preserved: number 91 896II in Dresden and 91 936 in Berlin. The Minden Museum Railway is rebuilding a T 9.3.
Read more about this topic: Prussian T 9