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Union Railroad class U-108b
The Union Railroad was part of US Steel and was responsible for freight traffic between some of their plants and the main lines of several railroads in western Pennsylvania. The low speeds made it possible to design a...
| Union Railroad class U-108bRemove | |
|---|---|
| Variant | Standard |
| Built | 1936-1939 |
| Manufacturers | Baldwin |
| Wheel arrangement | E1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 183388 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Union Railroad class U-108b Standard Remove |
|---|---|
| Built | 1936-1939 |
| Manufacturers | Baldwin |
| Wheel arrangement | 0-10-2 (Union) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Union Railroad class U-108b Standard Remove |
|---|---|
| Wheelbase | 9.75 m |
| Total wheelbase | 20.50 m |
| Service mass | 183.4 t |
| Adhesion mass | 156 t |
| Total mass | 292.3 t |
| Rigid wheelbase | 6.71 m |
| Axle load | 31.8 t |
| Water capacity | 45,425 l |
| Fuel capacity | 12.7 t (coal) |
Boiler
| Property | Union Railroad class U-108b Standard Remove |
|---|---|
| Grate area | 7.92 m² |
| Firebox surface | 41.686 m² |
| Tube heating surface | 404.993 m² |
| Evaporative heating surface | 446.678 m² |
| Superheater surface | 129.042 m² |
| Total heating surface | 575.7 m² |
Power plant
| Property | Union Railroad class U-108b Standard Remove |
|---|---|
| Driver diameter | 1,549 mm |
| Boiler pressure | 17.9 bar |
| Expansion type | simple expansion |
| Cylinders | two, 711 x 813 mm |
Power
| Property | Union Railroad class U-108b Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 2,983 kW (4,056 PS) |
| Starting effort | 404.3 kN |
| Starting effort booster | 76.287 kN |
Calculated values
| Property | Union Railroad class U-108b Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.79 |
| Optimal speed | 45 km/h |
| Power-to-weight ratio | 16.3 kW/t |
| Heating Surface Equivalent | 913.2 m² |
| Cylinder volume/HSE | 1 : 707.17 |
| Adhesive weight/Total | 1 : 1.18 |
| Tractive force/Heating surface | 1 : 14.67 |
| Grate area/Heating surface | 1 : 72.69 |
| Firebox/Tube surface | 1 : 9.72 |
| Total/Superheater | 1 : 3.46 |
