The DRB Class 50[1] is a German class of 2-10-0 locomotive, built from 1939 as a standard locomotive (Einheitsdampflokomotive) for hauling goods trains. It had one leading axle and five coupled axles and was one of the most successful designs produced for the Deutsche Reichsbahn.
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Quick Facts Type and origin, Power type ...
DRB Class 50 |
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Deutsche Bundesbahn (DB) 052 740-8 in Mayen, May 2006 |
Type and origin |
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Power type | Steam |
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Builder | |
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Build date | 1939–1948 |
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Total produced | 3160 |
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Specifications |
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Configuration:
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• Whyte | 2-10-0 |
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• UIC | 1′E h2 |
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• German | G 56.15 |
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Gauge | 1,435 mm (4 ft 8+1⁄2 in) |
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Leading dia. | 0,850 mm (33+1⁄2 in) |
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Driver dia. | 1,400 mm (55+1⁄8 in) |
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Tender wheels | 1,000 mm (39+3⁄8 in) |
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Wheelbase: | |
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• Axle spacing (Asymmetrical) | - 2,600 mm (8 ft 6+3⁄8 in) +
- 1,650 mm (5 ft 5 in) +
- 1,650 mm (5 ft 5 in) +
- 1,650 mm (5 ft 5 in) +
- 1,650 mm (5 ft 5 in) =
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• Engine | 9,200 mm (30 ft 2+1⁄4 in) |
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• Tender | - 1,900 mm (6 ft 2+3⁄4 in) +
- 1,900 mm (6 ft 2+3⁄4 in) +
- 1,900 mm (6 ft 2+3⁄4 in) =
- 5,700 mm (18 ft 8+3⁄8 in)
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• incl. tender | 18,890 mm (61 ft 11+3⁄4 in) |
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Length:
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• Over headstocks | 21,640 mm (71 ft 0 in) |
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• Over buffers | 22,940 mm (75 ft 3+1⁄8 in) |
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Height | 4,500 mm (14 ft 9+1⁄8 in) |
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Axle load | 15.3 t (15.1 long tons; 16.9 short tons) |
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Adhesive weight | 76.6 t (75.4 long tons; 84.4 short tons) |
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Empty weight | 78.6 t (77.4 long tons; 86.6 short tons) |
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Service weight | 88.1 t (86.7 long tons; 97.1 short tons) |
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Tender type | 2′2′ T 26 |
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Fuel type | Coal |
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Fuel capacity | 8 t (7.9 long tons; 8.8 short tons) |
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Water cap. | 26 m3 (5,720 imp gal; 6,870 US gal) |
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Firebox: | |
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• Grate area | 3.9 m2 (42 sq ft) |
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Boiler:
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• Pitch | 3,050 mm (10 ft 1⁄8 in) |
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• Tube plates | 5,200 mm (17 ft 3⁄4 in) |
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• Small tubes | 54 mm (2+1⁄8 in), 113 off |
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• Large tubes | 133 mm (5+1⁄4 in), 35 off |
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Boiler pressure | 16 bar (16.3 kgf/cm2; 232 psi) |
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Heating surface: | |
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• Firebox | 15.9 m2 (171 sq ft) |
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• Tubes | 90.4 m2 (973 sq ft) |
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• Flues | 71.3 m2 (767 sq ft) |
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• Total surface | 177.6 m2 (1,912 sq ft) |
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Superheater:
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• Heating area | 64.1 m2 (690 sq ft) |
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Cylinders | Two, outside |
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Cylinder size | 600 mm × 660 mm (23+5⁄8 in × 26 in) |
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Valve gear | Heusinger (Walschaerts) with lifting links |
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Train heating | Steam |
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Performance figures |
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Maximum speed | 80 km/h (50 mph) (both directions) |
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Indicated power | 1,625 PS (1,200 kW; 1,600 hp) |
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Career |
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Numbers | 50 001 – 50 3171 with gaps |
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Retired | 1987 |
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Close
This class was procured as part of the German Nazi party's preparations for war that led into the Second World War. Up to 1948, 3,164 Class 50 engines were built by almost all the European locomotive factories – towards the end as so-called provisional war locomotives (Übergangskriegslokomotiven) and classified as 50 ÜK.
At the end of the steam locomotive era, they became virtually a universal class of mixed-traffic steam engine that, thanks to their low axle load, could even be employed on branch lines with light track beds. The Deutsche Bundesbahn grouped the locomotives into Classes 050, 051, 052 and 053 from 1968 so that the numbers were computer-compatible.
Some of the class were used by the Polish State Railways as type Ty5.