DRB Class 50

Specifications
Specifications
• German	G 56.15
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	850 mm (33.46 in)
Driver dia.	1,400 mm (55.12 in)
Coupled dia.	1,400 mm (55.12 in)
Wheelbase:
• Overall	9.2 m (30 ft 2 in)
Length:;
• Over beams	22.94 m (75 ft 3 in)
Height	4.5 m (14 ft 9 in)
Axle load	15.2 t (15.0 long tons; 16.8 short tons)
Adhesive weight	75.3 t (74.1 long tons; 83.0 short tons)
Service weight	86.9 t (85.5 long tons; 95.8 short tons)
Boiler:;
No. of heating tubes	113
No. of smoke tubes	35
Heating tube length	5.200 m (17 ft 0.7 in)
Boiler pressure	16 bar (1.6 MPa; 230 psi)
Heating surface:
• Firebox	3.89 m2 (41.9 sq ft)
• Evaporative	177.83 m2 (1,914.1 sq ft)
Superheater:;
• Heating area	68.94 m2 (742.1 sq ft)
Cylinders	2
Cylinder size	600 mm (23.62 in)
Piston stroke	660 mm (25.98 in)
Valve gear	Walschaerts with lifting links
Train heating	Steam

Type and origin
Type and origin
Builder	Henschel & Sohn (650); Berliner Maschinenbau (370); Lokomotivfabrik Floridsdorf (368); Krupp (324); Krauss-Maffei (317); Borsig (179); Maschienenbau und Bahnbedarf AG (170); Schichau-Werke (135); Arnold Jung Lokomotivfabrik (105); Maschinenfabrik Esslingen (69); Škoda Works (140); ČKD (35); Deutsche Waffen- und Munitionsfabriken (72); Ostrowiece (26); SA des Usines Métallurgiques du Hainaut (24); SA la Métallurgique, Tubize (38); John Cockerill (42); Ateliers de construction de La Meuse (26); Forges Usines et Fonderies Haine-Saint-Pierre (28); Anglo-Franco-Belge (26); SA l’Énergie (16);
Build date	1939–1948
Total produced	3160

DRB Class 50
DRB Class 50
	German"Deutsche Bundesbahn" (DB) Class 50 in Mayen
Builder
Type and origin
Builder	Henschel & Sohn (650); Berliner Maschinenbau (370); Lokomotivfabrik Floridsdorf (368); Krupp (324); Krauss-Maffei (317); Borsig (179); Maschienenbau und Bahnbedarf AG (170); Schichau-Werke (135); Arnold Jung Lokomotivfabrik (105); Maschinenfabrik Esslingen (69); Škoda Works (140); ČKD (35); Deutsche Waffen- und Munitionsfabriken (72); Ostrowiece (26); SA des Usines Métallurgiques du Hainaut (24); SA la Métallurgique, Tubize (38); John Cockerill (42); Ateliers de construction de La Meuse (26); Forges Usines et Fonderies Haine-Saint-Pierre (28); Anglo-Franco-Belge (26); SA l’Énergie (16);
Build date	1939–1948
Total produced	3160
• German
Specifications
• German	G 56.15
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	850 mm (33.46 in)
Driver dia.	1,400 mm (55.12 in)
Coupled dia.	1,400 mm (55.12 in)
Wheelbase:
• Overall	9.2 m (30 ft 2 in)
Length:;
• Over beams	22.94 m (75 ft 3 in)
Height	4.5 m (14 ft 9 in)
Axle load	15.2 t (15.0 long tons; 16.8 short tons)
Adhesive weight	75.3 t (74.1 long tons; 83.0 short tons)
Service weight	86.9 t (85.5 long tons; 95.8 short tons)
Boiler:;
No. of heating tubes	113
No. of smoke tubes	35
Heating tube length	5.200 m (17 ft 0.7 in)
Boiler pressure	16 bar (1.6 MPa; 230 psi)
Heating surface:
• Firebox	3.89 m2 (41.9 sq ft)
• Evaporative	177.83 m2 (1,914.1 sq ft)
Superheater:;
• Heating area	68.94 m2 (742.1 sq ft)
Cylinders	2
Cylinder size	600 mm (23.62 in)
Piston stroke	660 mm (25.98 in)
Valve gear	Walschaerts with lifting links
Train heating	Steam
Maximum speed
Performance figures
Maximum speed	80 km/h (50 mph) (both directions)
Indicated power	1,625 ihp (1,212 kW)
Numbers
Career
Numbers	50 001–50 3171 with gaps
Retired	1987

The DRB Class 50 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.

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.

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