| NSB Class 87 | |
|---|---|
| In service | 1941–1981 |
| Manufacturer | Strømmen |
| Constructed | 1941, 1952 |
| Number under construction | 25 |
| Formation | 1 or 2 cars |
| Fleet numbers | 87.01–08 87.65–81 |
| Capacity | 59 |
| Operators | Norwegian State Railways |
| Specifications | |
| Car length | 14,000 mm (550 in) |
| Maximum speed | 75 km/h (47 mph) |
| Weight | 15.0 t (14.8 long tons; 16.5 short tons) |
| Prime mover(s) | Deutz A6M517(A) Scania-Vabis D802(B) |
| Power output | 93 kW (125 hp) (A) 112 kW (150 hp) (B) |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
NSB Class 87 (Norwegian: NSB type 87) is a class of 25 diesel-hydraulic railcars built by Strømmens Værksted for the Norwegian State Railways. Seventeen a-series units were delivered in 1941 and equipped with 93-kilowatt (125 hp) Deutz prime mover. Eight b-series units were delivered in 1952 and equipped with 110-kilowatt (150 hp) Scania-Vabis prime movers. The trains weighed 15 and 15.5 tonnes (14.8 and 15.3 long tons; 16.5 and 17.1 short tons) and had a maximum speed of 75 and 80 kilometres per hour (47 and 50 mph), respectively for the a and b-series. They were used on many branch lines until the 1960s, when the gradual electrification caused most lines instead to be served with Class 86. The a-series was scrapped in 1972 and 1973, while the b-series remained used between Ål and Hønefoss on the Bergen Line until 1975 and on the Flekkefjord Line until 1981.