Prussian G 10
| Prussian G 10 DRG Class 57.10–35 ÖBB 657 DB Class 057 DR Class 57.1-3 FS Class 47 SNCB Class 90 |
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| Number(s) | DRG 57 1001–2763 57 2892-3524 DR 57 3551, 4245 |
| Quantity | 2,677 (Germany) |
| Year(s) of manufacture | 1910–1925 |
| Retired | 1968 |
| Wheel arrangement | 0-10-0 |
| Axle arrangement | E h2 |
| Type | Gt 55.15 |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) standard gauge |
| Service weight | 76.6 t (75.4 long tons; 84.4 short tons) |
| Adhesive weight | 76.6 t (75.4 long tons; 84.4 short tons) |
| Axle load | 15.3 t (15.1 long tons; 16.9 short tons) |
| Top speed | 60 km/h (37 mph) |
| Indicated Power | 809 kW (1,085 hp) |
| Driving wheel diameter | 1,400 mm (55.12 in) |
| No. of cylinders | 2 |
| Cylinder bore | 630 mm (24.80 in) |
| Piston stroke | 660 mm (25.98 in) |
| Boiler Overpressure | 12 bar (1,200 kPa; 170 psi) |
| Grate area | 2.58 m2 (27.8 sq ft) |
| Superheater area | 58.80 m2 (632.9 sq ft) |
| Evaporative heating area | 146.00 m2 (1,571.5 sq ft) |
| Tender | pr 3 T 16.5/20 pr 2'2' T 21.5/31.5 bay 3 T 30.2 |
| Water capacity | 16.5–21.5 m3 (3,600–4,700 imp gal; 4,400–5,700 US gal) |
The Prussian G 10 was a German goods train, steam locomotive, whose design was based on a combination of the running and valve gear from the Prussian T 16 and the boiler from the Prussian P 8. In developing the G 10, however, the T 16 running gear with side play on the first and fifth axles was modified. The T 16 was also subsequently built with this modified configuration and called the Prussian T 16.1. The G 10 was intended for heavy goods train duties on main lines, but as a result of its low axle load it could be employed more flexibly than its equally powerful cousin, the Prussian G 8.1. The G 10 was occasionally even used in passenger train service.
Between 1910 and 1924 no less than 2,615 Class G 10s were delivered to the Prussian state railways and the Deutsche Reichsbahn, 35 to the Imperial Railways in Alsace-Lorraine (see Alsace-Lorraine G 10) and 27 to the Saar Railway. Another 350 were sent to railway companies in Turkey, Romania, Poland and Lithuania.
The Deutsche Reichsbahn took over almost all the Prussian engines and continued to build the G 10 until 1924. After the First World War, 222 G 10s went to foreign railways. According to the first provisional renumbering plan of 1923,several locomotives were delivered as Class 33s, but from the end of 1923 the newly delivered locos were given their final numbers. The G 10 was allocated numbers 57 1001-2725 and 57 2892-3524. Amongst them was number 57 1124, a G 10 from Alsace-Lorraine. In 1935 the G 10s from the Saar Railways were given numbers 57 2727-2763, of which 57 2737-2763 were the Saar Railway copies built from 1921-1925. In the Second World War more locomotives were taken over from Poland as 57 2764-2772 and 57 2784-2804 and from Luxembourg as 57 2773-2783. After the war a former G 10 from Alsace-Lorraine found itself in the GDR and was classified as 57 3551. It was joined by another G 10 of unknown origin, no. 57 4245.
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