DRG Class 23
The German Class 23 (Baureihe 23 or BR 23) engines of the Deutsche Reichsbahn (DRG) were standard (Einheitslokomotiven) steam engines that were conceived as a replacement for the Prussian P 8 by the Schichau Works. They were given the same boiler as the Class 50s which were developed in parallel and, like them, the newly developed 2'2' T 26 tender with its front wall that protected train crews during reverse running.
| DRG Class 23 | |
|---|---|
| Number(s) | DRG 23 001 – 23 002 |
| Quantity | 2 |
| Manufacturer | Schichau-Werke |
| Year(s) of manufacture | 1941 |
| Retired | 1975 |
| Wheel arrangement | 2-6-2 |
| Axle arrangement | 1'C1' |
| Axle arrangement | 1'C1' h2 |
| Type | P 35.18 |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length over buffers | 22,940 mm (75 ft 3 in) |
| Empty weight | 80.1 t (78.8 long tons; 88.3 short tons) |
| Service weight | 88.3 t (86.9 long tons; 97.3 short tons) |
| Service weight incl. tender | 148.2 t (145.9 long tons; 163.4 short tons) |
| Adhesive weight | 53.9 t (53.0 long tons; 59.4 short tons) |
| Axle load | 18.0 t (17.7 long tons; 19.8 short tons) |
| Top speed | 110 km/h (68 mph) |
| Indicated Power | 1,500 PS (1,103 kW; 1,479 hp) |
| Coupled wheel diameter | 1,750 mm (68.90 in) |
| Driving wheel diameter | 1,750 mm (68.90 in) |
| Leading wheel diameter | 1,000 mm (39.37 in) |
| Trailing wheel diameter | 1,250 mm (49.21 in) |
| No. of cylinders | 2 |
| Cylinder bore | 550 mm (21.65 in) |
| Piston stroke | 660 mm (25.98 in) |
| Boiler Overpressure | 16 bar (1,600 kPa; 230 psi) |
| No. of heating tubes | 113 |
| No. of smoke tubes | 35 |
| Grate area | 3.89 m2 (41.9 sq ft) |
| Superheater area | 63.60 m2 (684.6 sq ft) |
| Evaporative heating area | 177.83 m2 (1,914.1 sq ft) |
| Tender | 2'2' T 26 |
| Water capacity | 26.0 m3 (920 cu ft) |
| Train heating | Steam |
In 1941 the two prototypes were built and delivered. The procurement of 800 locomotives had been planned, however the constraints of the Second World War meant that they never entered full production.
After the war the two locomotives, with operating numbers 23 001 and 23 002, went to the DR in East Germany and were variously stabled in Berlin, Brandenburg an der Havel, Jüterbog and Halle. In 1961, number 23 001 was given a Reko boiler with combustion chamber, developed for the Class 50. In 1970 the locomotive was given EDP number 35 2001–2. Number 23 002 was to be reconstructed, but was retired however in 1967 due to damage to the frame and scrapped. Number 23 001 was scrapped in 1975 in Cottbus, as it could no longer serve any useful purpose.
After the war, the design of these Class 02 locomotives formed the basis for the new DB Class 23 and DR Class 23.10 locomotives which received the same class designation.