NSB Class 30

NSB class 30
The preserved engine no. 271 on Raumabanen
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 1⁄2 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 & 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 × 600 mm (15.35 × 23.62 in)
High-pressure cylinder size	30b/c: 390 × 600 mm (15.35 × 23.62 in)
Low-pressure cylinder size	30b/c: 585 × 600 mm (23.03 × 23.62 in)
Top speed	Forwards: 90 km/h (56 mph), Backwards: 50 km/h (31 mph)

The NSB class 30 was a 4-6-0 tender steam locomotive formerly used in Norway by Norges Statsbaner. The class 30 engines were an upsized version of the 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^{[clarification needed]} which produced 23 engines. The type 30 was produced in three versions, 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 The last class 30 engines were withdrawn from service in 1971. 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.

Incident

• 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.

Specifications

• Length: 17.51 m
• Total weight:
  • a-series: 95.8 t
  • b-series: 100.5 t
  • c-series: 109.5 t
• Wheel arrangement: 4-6-0
• Maximum speed: 90 km/h (50 km/h driving backwards)
• Diameter of driving wheel: 1.60 m

External links

• Jernbane.net entry on NSB class 30