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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 ...
| Norwegian State Railways types 19a and 28a, bRemove | |
|---|---|
| Variant | 19a |
| Built | 1902, 1909-1910 |
| Manufacturers | SLM;Hamar Jernstøberi |
| Wheel arrangement | 1D |
| Gauge | 1435 mm |
| Length | 16700 mm |
| Service mass | 71550 kg |
| Top speed | 40 km/h |
| Power | |
| Engine |
General
| Property | Norwegian State Railways types 19a and 28a, b19a |
|---|---|
| Built | 1902, 1909-1910 |
| Manufacturers | SLM, Hamar Jernstøberi |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Norwegian State Railways types 19a and 28a, b19a |
|---|---|
| Length | 16.70 m |
| Wheelbase | 6.70 m |
| Empty mass | 63.6 t |
| Service mass | 71.6 t |
| Adhesion mass | 62 t |
| Total mass | 106.1 t |
| Rigid wheelbase | 2.83 m |
| Axle load | 15.5 t |
| Water capacity | 15,000 l |
| Fuel capacity | 4 t (coal) |
Boiler
| Property | Norwegian State Railways types 19a and 28a, b19a |
|---|---|
| Grate area | 2.8 m² |
| Firebox surface | 11.7 m² |
| Tube heating surface | 166 m² |
| Evaporative heating surface | 177.7 m² |
| Total heating surface | 177.7 m² |
Power plant
| Property | Norwegian State Railways types 19a and 28a, b19a |
|---|---|
| Driver diameter | 1,250 mm |
| Boiler pressure | 13 bar |
| Expansion type | compound |
| Cylinders | two, HP: 550 x 640 mm and LP: 820 x 640 mm |
Power
| Property | Norwegian State Railways types 19a and 28a, b19a |
|---|---|
| Power source | steam |
| Estimated power | 650 kW |
| Top speed | 40 km/h |
| Starting effort | 118.0 kN |
| Starting effort simple | 141.6 kN |
Calculated values
| Property | Norwegian State Railways types 19a and 28a, b19a |
|---|---|
| Factor of adhesion | 1 : 5.15 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 9.1 kW/t |
| Heating Surface Equivalent | 236.2 m² |
| Cylinder volume/HSE | 1 : 1,359.21 |
| Adhesive weight/Total | 1 : 1.15 |
| Tractive force/Heating surface | 1 : 13.87 |
| Grate area/Heating surface | 1 : 63.46 |
| Firebox/Tube surface | 1 : 14.19 |
