- DRB Class 06
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DRB Class 06 Number(s): DRB 06 001–002 Quantity: 2 Manufacturer: Krupp Year(s) of manufacture: 1939 Retired: 1951 Wheel arrangement: 4-8-4 Axle arrangement: 2'D2' Axle arrangement: 2'D2' h3 Type: S 48.18 Gauge: 1,435 mm (4 ft 8 1⁄2 in) Length over buffers: 26.52 m (87 ft 0 in) Service weight: 141.8 t (139.6 long tons; 156.3 short tons) Adhesive weight: 80.0 t (78.7 long tons; 88.2 short tons) Axle load: 20.0 t (19.7 long tons; 22.0 short tons) Top speed: 140 km/h (87 mph) Indicated Power: 2,059 kW (2,761 hp) Driving wheel diameter: 2.00 m (6 ft 7 in) Leading wheel diameter: 1.00 m (3 ft 3 in) Trailing wheel diameter: 1.00 m (3 ft 3 in) Cylinder bore: 520 mm (20 in) Piston stroke: 720 mm (28 in) Boiler Overpressure: 20 bar (2.0 MPa) Grate area: 4.82 m2 (51.9 sq ft) Superheater area: 132.5 m2 (1,426 sq ft) Evaporative heating area: 288.54 m2 (3,105.8 sq ft) Tender: 2'3 T 38 St Water capacity: 38,000 l (8,400 imp gal; 10,000 US gal) The German DRB Class 06 engines were standard steam locomotives (Einheitsdampflokomotiven) with the Deutsche Reichsbahn (DRB) designed to haul express train services. They were the only German locomotives with a 4-8-4 (Northern) wheel arrangement.
History
The two Class 06 locomotives built by the firm of Krupp in 1939 were the largest, heaviest and most powerful locomotives in the Deutsche Reichsbahn. They were built for heavy express train duties in hilly terrain. The performance requirement was for the transportation of 650 tons at 120 km/h. On ramps of 1:100 it was to still to be capable of maintaining 60 km/h.
The Class 06 was give the same boiler as the Class 45 and many of the same components as the Class 41. The running gear, with four coupled axles, had a wheelbase of 6,75 m.
In trials, the vehicles confirmed their remarkable capability and running qualities. However the locomotives tended to derail in tight turnout curves. And, like the Class 45s, the boilers developed cracks, leaky tubes and popped stay bolts, so that the locomotives were unconvincing when hauling measurement vehicles or scheduled trains.
As a result of the war no more were produced. After the Second World War there was no longer a requirement for a locomotive of this size, so that neither the necessary structural modification of the engines was carried out, nor did any follow-on orders result. Both engines were seen as having a faulty design and were retired by the Deutsche Bundesbahn in 1951 in Frankfurt am Main and scrapped, because the DB refused to replace their boilers.
The two locomotives, which had operating numbers 06 001 and 06 002, were equipped with 2'3 T 38 St tenders.
See also
External links
- Photograph of the Class 06
- There is a relevant English-language forum at Railways of Germany
Classes of Deutsche Reichsbahn locomotive Express train tender locomotives Passenger train tender locomotives Goods train tender locomotives Passenger tank locomotives Goods tank locomotives Rack railway, branch line & narrow gauge locomotives Electric locomotives Diesel locomotives Railbuses and multiple units State railway locomotive lists Categories:- Steam locomotives of Germany
- 4-8-4 locomotives
- Deutsche Reichsbahn-Gesellschaft locomotives
- Krupp locomotives
- Railway locomotives introduced in 1939
- Streamlined steam locomotives
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