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NSB Class 30

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NSB Class 30

NSB class 30
The preserved engine no. 271 on Raumabanen
Type and origin
Power type Steam
Builder Thune (22), NMI (23)
Build date 1914–1916, 1919–1921, 1938–1939
Total produced 45
Gauge 1,435 mm (4 ft 8 12 in)
Driver diameter 1,600 mm (63.0 in)
Length 17.51 m (57 ft 5 in)
Weight on drivers 30a: 41.1 tonnes (40.5 long tons; 45.3 short tons),
30b: 42.9 tonnes (42.2 long tons; 47.3 short tons),
30c: 43.9 tonnes (43.2 long tons; 48.4 short tons)
Locomotive and tender
combined weight
30a: 95.8 tonnes (94.3 long tons; 105.6 short tons),
30b: 100.5 tonnes (98.9 long tons; 110.8 short tons),
30c: 109.5 tonnes (107.8 long tons; 120.7 short tons)
Cylinders 30a: Four (simple),
30b/c: Four: 2 HP, 2 LP
Cylinder size 30a: 390 mm × 600 mm (15.35 in × 23.62 in)
cylinder size
30b/c: 390 mm × 600 mm (15.35 in × 23.62 in)
cylinder size
30b/c: 585 mm × 600 mm (23.03 in × 23.62 in)
Performance figures
Maximum speed Forwards: 90 km/h (56 mph),
Backwards: 50 km/h (31 mph)

The NSB class 30 was a NSB Class 45 engines. Class 30 locomotives were originally intended for use on Dovrebanen, but they were employed throughout the Norwegian rail network. The first of these engines were produced in 1914, the last in 1939.

A total of 45 type 30 engines were completed by Thune which produced 22 engines, and NMI which produced 23 engines. The type 30 was produced in three versions. Class 30a had four cylinder high pressure engine, while class 30b and 30c were compound engines. 18 units were made of the lightest version the 30a (numbered 256-258, 271-282, and 316-318), there were 23 units of the 30b (numbered 346-368), while 4 units were made of the heaviest version, the 30c (numbered 466 to 469). The last class 30 engines were withdrawn from service in 1969. However, engine no. 271 was preserved by the Norwegian Railway Club, and has been used by their department Norsk Museumstog for heritage trains on lines like Raumabanen.


  • Two NSB class 30b engines, no. 364 and no. 365, double-headed to haul one of the trains involved in the Nidareid train disaster in 1921.

External links

  • entry on NSB class 30
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