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Electro-Motive Division SW7, SW8 and SW9
In 1949, EMD introduced the SW7 switcher as the successor of the NW2. It still had the twelve-cylinder 567A engine, but now with 1,200 instead of 1,000 hp . Like its predecessor, it had two exhaust stacks on the hood....
General
| Property | Electro-Motive Division SW7, SW8 and SW9 Remove |
|---|---|
| Built | 1951-1953 |
| Manufacturers | Electro-Motive Division, General Motors Diesel |
| Wheel arrangement | B-B |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Electro-Motive Division SW7, SW8 and SW9 Remove |
|---|---|
| Length | 13.54 m |
| Wheelbase | 9.14 m |
| Rigid wheelbase | 2.44 m |
| Service weight | 112.5 t |
| Adhesive weight | 112.5 t |
| Axle load | 28.1 t |
| Fuel capacity | 2,271 l (Diesel) |
Power plant
| Property | Electro-Motive Division SW7, SW8 and SW9 Remove |
|---|---|
| Engine | EMD 12-567B |
| Engine type | V12 diesel |
Power
| Property | Electro-Motive Division SW7, SW8 and SW9 Remove |
|---|---|
| Power source | diesel-electric |
| Indicated power | 895 kW (1,217 PS) |
| Top speed | 105 km/h |
| Starting effort | 275.8 kN |
Calculated values
| Property | Electro-Motive Division SW7, SW8 and SW9 Remove |
|---|---|
| Factor of adhesion | 1 : 4.00 |
| Power-to-weight ratio | 8.0 kW/t |
| Adhesive weight/Total | 1 : 1.00 |
