Prussian T 5.1
| Company type | Locomotive class |
|---|---|
| Industry | Railway transport |
| Founded | 1895 |
| Headquarters | Germany |
| Products | Passenger tank locomotives |
Template:Refimprove The Prussian Class T 5 encompassed a range of passenger tank locomotive types operated by the Prussian state railways. Certain units from the subclasses T 5.1 and T 5.2 were incorporated into the Deutsche Reichsbahn roster as DRG Classes 71.0 and 72.0 respectively.
Prussian T 5.1
Between 1895 and 1905, a total of 309 locomotives of the Class T 5.1, featuring a 2-4-2T wheel configuration, were manufactured by Henschel. These engines were originally ordered to serve the Berlin Stadtbahn lines, replacing older 2-4-0T and 0-4-2T models that no longer met power requirements. Subsequently, many were allocated to various other railway divisions. Additionally, 20 units were delivered to the Grand Duchy of Oldenburg State Railways and classified as Oldenburg T 5.1.
With the introduction of more powerful locomotives, the T 5.1 class was gradually withdrawn from branch line duties. The 1923 DRG renumbering plan for steam locomotives still listed 115 engines under numbers 71 001–018, 021–028, 032–119 and 72 016; however, by 1925 only 26 remained in service, numbered from 71 001 to 71 026. All were retired by 1930.
The numbering sequence from 71 001 to 71 006 was reassigned in 1934 to standard Einheitslokomotiven classified as DRG Class 71.0.
During World War II, four T 5.1 locomotives originating from Poland (formerly PKP class OKe1) were documented in the Reichsbahn fleet with numbers 71 7001–7004; however, these identifiers were not physically displayed on the engines.
No specimens of the Prussian Class T 5.1 have been preserved.
Prussian T 5.2
The Prussian Class T 5.2, also referred to as the Wannsee variant, consisted of locomotives built by both Henschel (30 units) and Grafenstaden (6 units). Designed for service between Berlin and Potsdam, they aimed to replace the T 5.1s on the Berlin Stadtbahn route.
Equipped with a 4-4-0T wheel arrangement, these engines offered improved ride quality compared to the T 5.1 class. Nonetheless, their lack of a trailing axle combined with large driving wheels made them less suitable for running cab first, which limited their operational use primarily to the Berlin ring line.
In the Reichsbahn’s initial plans during 1923, twenty locomotives were slated for inclusion under numbers 71 019, 020, 029–031 and 72 001–015 in the DRG renumbering plan for steam locomotives, but only two units were ultimately incorporated in the final numbering system of 1925 as numbers 72 001 and 72 002. These were withdrawn from service by 1926.
In 1941, two additional locomotives built by Henschel in 1911 for the Eutin-Lübeck Railway Company joined the Reichsbahn fleet and received numbers 72 001 and 72 002. One of these, after conversion to superheated operation, remained under the ownership of the Deutsche Reichsbahn in East Germany until its retirement in 1955.
No examples of the Prussian Class T 5.2 locomotives are known to have survived.
Prussian T 5.2 (Superheated)
The superheated version of the Prussian T 5.2 holds the distinction of being the initial superheated tank engine within the Prussian state railway system. Constructed following a Schmidt design, it exhibited enhanced capabilities compared to the saturated steam T 5.2 model. Visually, it could be distinguished from the wet steam T 5.2 by its taller smokebox, a repositioned steam dome, and an extended wheelbase. Both units were manufactured in 1900 by Henschel. These locomotives were never incorporated into the fleet of the Reichsbahn.
0-6-0T Prussian T 5 of the Main-Neckar Railway
The Prussian T 5 engines assigned to the Main-Neckar Railway, which came under Prussian administration in 1866, were originally designed for service along the Weinheim to Fürth (Odenwald) route (Weschnitz Valley Railway). However, operational challenges on steep gradients led to their deployment on the line connecting Frankfurt and Heidelberg. Six units were produced between 1896 and 1898 by the Maschinenbau-Gesellschaft Karlsruhe.
None of the Main-Neckar variants of the 0-6-0T Prussian Class T 5 have survived to present day.
2-6-0T Prussian T 5 of the Main-Neckar Railway
Alongside the 0-6-0T models, four 2-6-0T locomotives from the Main-Neckar Railway were also integrated into the Prussian state railways. These were constructed in 1899 by the Maschinenbau-Gesellschaft Karlsruhe. Starting in 1906, they carried numbers "Mainz 6691–6694".
Prussian T 5 of the Lower Elbe Railway
The T 5 locomotives operated by the Lower Elbe Railway Company were passenger tank engines featuring a 2-4-2T wheel configuration. Ordered in 1880 from the Elsässische Maschinenbau-Gesellschaft Grafenstaden, these ten units served on the Harburg–Cuxhaven line. From 1906, they bore running numbers "Altona 6601–6609" before being withdrawn from service by 1911.
Technical data
| Prussian T 5 | ||||||
|---|---|---|---|---|---|---|
| T 5.1 DRG Class 71.0 |
T 5.2 DRG Class 72.0 |
T 5.2 Superheated |
T 5 Main-Neckar 0-6-0T |
T 5 Main-Neckar 2-6-0T |
T 5 Lower Elbe Railway | |
| Numbers: | DRG 71 001–026 | 72 001–002 | Mainz 6691–6694 | Altona 6601–6609 | ||
| Quantity: | 309 | 36 | 2 | 6 | 4 | 10 |
| Manufacturer: | Henschel | Henschel, Grafenstaden | Henschel | Karlsruhe | Karlsruhe | Grafenstaden |
| Year(s) of manufacture: | 1895–1905 | 1899–1900 | 1900 | 1896 | 1899 | 1880 |
| Retired: | 1930 | 1955 | um 1920 | 1911 | ||
| Wheel arrangement: | 2-4-2T | 4-4-0T | 4-4-0T | 0-6-0T | 2-6-0T | 2-4-2T |
| Axle arrangement: | 1'B1' | 2'B | 2'B | C | 1'C | 1B1 |
| Track gauge: | Template:Track gauge | |||||
| Length over buffers: | 11,685 mm | 10,856 mm | 11,606 mm | 9,934 mm | 10,800 mm | |
| Service weight: | 53.2 t | 56.4 t | 60.6 t | 45.5 t | 51.0 t | 51.8 t |
| Adhesive weight: | 31.4 t | 31.6 t | 31.6 t | 45.5 t | 44.0 t | 27.0 t |
| Axle load: | 15.7 t | 16.7 t | 15.8 t | 15.2 t | ||
| Top speed: | 75 km/h | 75 km/h | 75 km/h | 65 km/h | 65 km/h | 80 km/h |
| Driving wheel diameter: | 1,600 mm | 1,600 mm | 1,600 mm | 1,726 mm | 1,726 mm | 1,730 mm |
| Leading wheel diameter: | 1,000 mm | 800 mm | 850 mm | |||
| Trailing wheel diameter: | 1,000 mm | |||||
| Cylinder bore: | 430 mm | 440 mm | 440 mm | 430 mm | 430 mm | 440 mm |
| Piston stroke: | 600 mm | |||||
| Boiler overpressure: | 12 bar | 9 bar | ||||
| Grate area: | 1.57 m2 | 1.68 m2 | 1.69 m2 | 1.54 m2 | 1.54 m2 | 2.20 m2 |
| Superheater area: | 29.00 m2 | |||||
| Evaporative heating area: | 95.09 m2 | 100.68 m2 | 109.40 m2 | 96.40 m2 | 106.00 m2 | 110.8 m2 |