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Norwegian State Railways types 19a and 28a, b
For the Ofotbanen, which connected the ore mines in Kiruna with the Norwegian port in Narvik, SLM in Switzerland developed the type 19a freight locomotives. These were 2-8-0 two-cylinder compound machines, which were ...
General
| Property | Norwegian State Railways types 19a and 28a, b 28a, rebuilt 28b |
|---|---|
| Built | 1911, 1939-1945 |
| Manufacturers | Hamar Jernstøberi |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Norwegian State Railways types 19a and 28a, b 28a, rebuilt 28b |
|---|---|
| Length | 16.94 m |
| Wheelbase | 6.70 m |
| Rigid wheelbase | 2.83 m |
| Empty weight | 63.6 t |
| Service weight | 71.6 t |
| Adhesive weight | 62 t |
| Axle load | 15.5 t |
| Total weight | 106.1 t |
| Water capacity | 15,000 l |
| Fuel capacity | 6 t (coal) |
Boiler
| Property | Norwegian State Railways types 19a and 28a, b 28a, rebuilt 28b |
|---|---|
| Grate area | 2.8 m² |
| Evaporative heating surface | 150.5 m² |
| Superheater surface | 45.8 m² |
| Total heating surface | 196.3 m² |
Power plant
| Property | Norwegian State Railways types 19a and 28a, b 28a, rebuilt 28b |
|---|---|
| Driver diameter | 1,250 mm |
| Boiler pressure | 13 bar |
| Expansion type | simple expansion |
| Cylinders | two, 600 x 640 mm |
Power
| Property | Norwegian State Railways types 19a and 28a, b 28a, rebuilt 28b |
|---|---|
| Power source | steam |
| Estimated power | 800 kW (1,088 PS) |
| Top speed | 45 km/h |
| Starting effort | 203.7 kN |
Calculated values
| Property | Norwegian State Railways types 19a and 28a, b 28a, rebuilt 28b |
|---|---|
| Factor of adhesion | 1 : 2.99 |
| Optimal speed | 24 km/h |
| Power-to-weight ratio | 11.2 kW/t |
| Adhesive weight/Total | 1 : 1.15 |
| Tractive force/Heating surface | 1 : 21.67 |
| Grate area/Heating surface | 1 : 70.11 |
| Total/Superheater | 1 : 3.29 |
