NSB Class 21

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NSB type 21
Type and origin Power type Steam Builder NOHAB, Hamar, Thune Build date 1904 - 1917 Total produced 42
Specifications Configuration: ​  • Whyte 2-6-0  • UIC 1'C-3 Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 1,448 mm (4 ft 9.0 in) Wheelbase 3,352 mm (11 ft 0 in) Length 14,432 mm (47 ft 4.2 in) Fuel type Coal Fuel capacity 3 t (3.3 short tons; 3.0 long tons) Water cap. 7.7 m3 (1,700 imp gal) Boiler pressure 12 bar (170 psi) Cylinders 2
Performance figures Maximum speed Forward: 60 km/h (37 mph) Reverse: 45 km/h (28 mph) Tractive effort 18,560 lbf (82.56 kN) [1]
Career Operators Norwegian State Railways Numbers 146, 149–150, 174–183, 201–209, 224–225, 237, 251–253, 294–295, 312–315, 370–377 Withdrawn 1971 Preserved 5 (207, 225, 252, 376 and 377)
More technical data

The NSB type 21 was a standard gauge locomotive, suitable for lightly laid lines (10-11 tonnes axle load), introduced in 1904 for the rebuilt Bergen-Vossbanen, and was in use until NSB phased out steam in 1970-71.