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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.

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DRG Class 23
Type and origin Builder Schichau-Werke Build date 1941 Total produced 2
Specifications Configuration: ​  • Whyte 2-6-2  • UIC 1'C1'  • German P 35.18 Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 1,000 mm (39.37 in) Driver dia. 1,750 mm (68.90 in) Coupled dia. 1,750 mm (68.90 in) Trailing dia. 1,250 mm (49.21 in) Length: ​  • Over beams 22,940 mm (75 ft 3 in) Axle load 18.0 t (17.7 long tons; 19.8 short tons) Adhesive weight 53.9 t (53.0 long tons; 59.4 short tons) 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) Total weight 148.2 t (145.9 long tons; 163.4 short tons) Water cap. 26.0 m3 (920 cu ft) Boiler: ​ No. of heating tubes 113 No. of smoke tubes 35 Boiler pressure 16 bar (1,600 kPa; 230 psi) Heating surface:  • Firebox 3.89 m2 (41.9 sq ft)  • Evaporative 177.83 m2 (1,914.1 sq ft) Superheater: ​  • Heating area 63.60 m2 (684.6 sq ft) Cylinders 2 Cylinder size 550 mm (21.65 in) Piston stroke 660 mm (25.98 in) Train heating Steam
Performance figures Maximum speed 110 km/h (68 mph) Indicated power 1,500 PS (1,103 kW; 1,479 hp)
Career Numbers DRG 23 001 – 23 002 Retired 1975

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.

See also

• List of DRG locomotives and railbuses

References

• Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 174–177. ISBN 3-87094-081-6.

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