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Japanese National Railways class EF70
On the Hokuriku main line, a steep tunnel of the same name made it necessary to develop a powerful AC electric locomotive. Its tasks included the haulage of 1,300 tonne freight trains on a one percent incline or of pa...
| Japanese National Railways class EF70Remove | |
|---|---|
| Variant | EF70 19-81 |
| Built | 1961-1965 |
| Manufacturers | Hitachi;Mitsubishi |
| Wheel arrangement | BoBoBo |
| Gauge | 1067 mm |
| Length | 16750 mm |
| Service mass | 96000 kg |
| Top speed | 100 km/h |
| Power | 2300 kW |
| Engine |
General
| Property | Japanese National Railways class EF70EF70 19-81 |
|---|---|
| Built | 1961-1965 |
| Manufacturers | Hitachi, Mitsubishi |
| Wheel arrangement | B-B-B |
| Gauge | 1,067 mm |
Dimensions and weights
| Property | Japanese National Railways class EF70EF70 19-81 |
|---|---|
| Length | 16.75 m |
| Service mass | 96 t |
| Adhesion mass | 96 t |
| Rigid wheelbase | 2.80 m |
| Axle load | 16 t |
Power
| Property | Japanese National Railways class EF70EF70 19-81 |
|---|---|
| Power source | electric - AC |
| Hourly power | 2,300 kW (3,127 PS) |
| Top speed | 100 km/h |
| Starting effort | 294.0 kN |
Calculated values
| Property | Japanese National Railways class EF70EF70 19-81 |
|---|---|
| Factor of adhesion | 1 : 3.20 |
| Power-to-weight ratio | 24.0 kW/t |
| Adhesive weight/Total | 1 : 1.00 |
