Prussian G 5.1
| Prussian G 5.1 DRG Class 54.0 | |
|---|---|
| Number(s) | DRG 54 001–071 |
| Quantity | 268 |
| Year(s) of manufacture | 1892 - 1902 |
| Retired | 1929 |
| Wheel arrangement | 2-6-0 |
| Axle arrangement | 1'C n2 |
| Length over buffers | 15,990 mm |
| Service weight | 48.5 t |
| Adhesive weight | 39.9 t |
| Axle load | 13.7 t |
| Top speed | 65 km/h |
| Driving wheel diameter | 1,350 mm |
| Leading wheel diameter | 1,000 mm |
| No. of cylinders | 2 |
| Cylinder bore | 450/480 mm |
| Piston stroke | 630 mm |
| Boiler Overpressure | 10/12 bar |
| Grate area | 2.29 m² |
| Evaporative heating area | 137.00 m² |
| Tender | pr 3 T 12 |
| Water capacity | 12.0 m³ |
The Prussian Class G 5.1 steam engines were the first 2-6-0 goods locomotives in Europe. They were developed for the Prussian state railways from the Class G 4 and a total of no less than 268 units of this class were placed in service in Prussia between 1892 and 1902. The twin-cylinder G 5.1 had been designed to raise the speed of goods trains on main lines. In addition, more powerful engines were needed for the increasingly heavy train loads. The locomotives, which were equipped with a compressed air brake, were used in charge of fast goods trains (Eilgüterzugdienst) and also passenger trains due to their impressive top speed of 65 km/h. The G 5.1 was fitted with inside Allan valve gear and the carrying wheels were of the Adams axle design.
In 1923 the Reichsbahn listed 169 G 5.1's as nos. 54 001 - 168 and 54 182 as part of their renumbering plan for steam locomotives; in 1925 only 71 examples, with running numbers 54 001 - 54 071 were recorded. The locomotives were all retired by 1930.
During the Second World War, three G 5.1 returend to the Reichsbahn fleet from Poland and were numbered 54 601 - 603.
The engines were coupled with tenders of Class pr 3 T 12.