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NSB type 18
Type and origin Power type Steam Builder Sächsische Maschinenfabrik, Hamar Build date 1900 - 1919 Total produced 35
Specifications Configuration: ​  • Whyte 4-6-0  • UIC 2'C-2'2' Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 1,445 mm (4 ft 8.9 in) Wheelbase 3,350 mm (11 ft 0 in) Length 15,625 mm (51 ft 3.2 in) Height 4,100 mm (13 ft 5 in) Loco weight 18a45.8 t (50.5 short tons; 45.1 long tons) 18n46.6 t (51.4 short tons; 45.9 long tons) 18c: 46.7 t (51.5 short tons; 46.0 long tons) Tender weight 13.7 t (15.1 short tons; 13.5 long tons) Total weight 18a78.3 t (86.3 short tons; 77.1 long tons) 18b/c: 79.6 t (87.7 short tons; 78.3 long tons) Fuel type Coal Fuel capacity 3.5 t (3.9 short tons; 3.4 long tons) Water cap. 11 m3 (2,400 imp gal) Firebox: ​  • Grate area 1.9 m2 (20 sq ft) Heating surface: ​  • Firebox 18a/b: 117.3 m2 (1,263 sq ft) 18c: 94.1 m2 (1,013 sq ft) Superheater: ​  • Heating area 18c: 29.4 m2 (316 sq ft) Cylinders 2 Cylinder size 18c: 480 mm × 650 mm (19 in × 26 in) High-pressure cylinder 18a/b: 450 mm × 650 mm (18 in × 26 in) Low-pressure cylinder 18a/b: 670 mm × 650 mm (26 in × 26 in)
Performance figures Maximum speed Forward: 18a/b:60 km/h (37 mph) 18c: 65 km/h (40 mph) Reverse: 50 km/h (31 mph) Power output 825 hp (615 kW) Factor of adh. 18a35.1 t (38.7 short tons; 34.5 long tons) 18b/c: 36 t (40 short tons; 35 long tons)
Career Operators Norwegian State Railways Numbers 131–138, 157–158, 184–189, 211–214, 226, 231–233, 241–246, 255, 267, 298, 310–311 Withdrawn 1969 Preserved one preserved, remainder scrapped

The NSB type 18 was a 2'C (4-6-0) built between 1900 and 1919 by Sächsische Maschinenfabrik and Hamar Jernstøberi for the Norwegian state railway (NSB).

History

The type 18 was originally intended for the Nordbanen, but could be found on most lines in Norway. 35 of this type were built in as subtypes 18a, 18b and 18c, of which the latest model c was somewhat heavier and had a larger cylinder diameter. The early types, 18a and 18b, were later upgraded to c-standard. The Type 18 had around 825 horsepower and a service weight of 81 tonnes including the tender as well as a top speed of 65 km/h. As rail traffic picked up, these machines were replaced by more powerful locomotives. A total of 35 locomotives were built. 18a nos. 131 to 138 were built in Germany by the Sächsische Maschinenfabrik, the remaining locomotives by Hamar Jernstøberi.

NSB Type 18a

The saturated compounded locomotives of type 18a were used on the northern railways Røykenvikbanen (Jaren - Røykenvik), Gjøvikbanen (Grefsen - Gjøvik) and Skreiabanen (Reinsvoll - Skreia). The first eight locomotives nos. 131–134 were built by the Sächsische Maschinenfabrik in 1900, nos. 135–138 followed in 1901 and nos. 157 and 158 were built by Hamar Jernstøberi in 1903. Eight of the ten locomotives, with the exception of nos. 135 and 157, were later fitted with superheaters and simple expansion and were re-designated as the type 18c. Locomotive no. 138 was displayed at the Paris World Exhibition in 1900.

NSB Type 18b

The Type 18b were saturated compounded locomotives as well, built by Hamar Jernstøberi in 1907. The six locomotives were intended for use in the area around Gjøvik and for the Bergensbane. They had road numbers 184 to 189. The locomotives were based in Bergen, Hamar, Trondheim, Kristiansand and Arendal. They were also used on the Eidsvoll - Otta and Otta - Dombås sections of the Dovre line. No. 184 was rebuilt onto an 18c in 1938 and No. 186 in 1948. A these two engines were withdrawn in 1962.

NSB Type 18c

The type 18c was slightly heavier than the previous types and had an enlarged cylinder diameter. No compounding was used on the 18c, and was originally built superheaters. They were also built by Hamar Jernstøberi. They were later replaced by more powerful locomotives in mainline service and were put on branch line services. No. 134 was the oldest type 18c in service from 1964 until it was withdrawn in 1968.

Preservation

The last NSB type 18c no. 255 locomotive built in 1913 by Hamar Jernstøberi was withdrawn on 25 August 1969 and has since been preserved by the Bergen Technical Museum. This locomotive was restored in from 1980 to 1992 by the Norsk Jernbaneklubb and is in service at the Gamle Vossebanen where it is in operation every summer. no. 255 was originally allocated to the Eidsvold – Ottabanen, but was reallocated to the Drammen, Oslo and Trondheim districts, where after the latter it ran the line between Grong and Namsos.

External links

• NSB type 18. In: Jernbane.net. Archived from the original on March 19, 2008 ; Retrieved October 18, 2019 (Norwegian).
• Type 18 – Jernbane.net
• Image of Type 18a at digitaltmuseum.no
• Gamle Vossebanen. Norsk Jerbaneklubb, retrieved October 18, 2019 (Norwegian).
• Database of rolling stock used in Norway. Norsk Jerbaneklubb, abgerufen am 18 October 2019 (Norwegian).

See also

• List of locomotives at the Paris World Fair in 1900

Category:Steam locomotives of Norway Category:4-6-0 locomotives Category:Steam locomotives