North-East Railway D 3/3
Hungarian State Railways class 334
Switzerland 1891 40 produced
These freight locomotives were built according to the Longboiler or “Bourbonnais” design, i.e. as a six-coupled with large overhangs both at the front and rear. A first series of 16 locomotives was built between 1891 and 1895 and a second of 24 locomotives from 1897 to 1902. The locomotives of the second series had compound engines and the last machines were delivered directly to the SBB. After the First World War, eight came to MÁV. The SBB parted with the last machines by the end of the 1920s.
Technical data
General
| Property | 1891 variant | 1897 variantt |
|---|---|---|
| Built | 1891-1895 | 1897-1902 |
| Manufacturers | SLM | |
| Wheel arrangement | 0-6-0 (Six-coupled) | |
| Gauge | 1,435 mm (Standard gauge) | |
Dimensions and weights
| Property | 1891 variant | 1897 variantt |
|---|---|---|
| Length | 14.05 m | |
| Adhesion mass | 42.5 t | 43.5 t |
| Total mass | 67.7 t | 69.4 t |
| Axle load | 14.2 t | 14.5 t |
Boiler
| Property | 1891 variant | 1897 variantt |
|---|---|---|
| Grate area | 1.7 m² | |
| Evaporative heating surface | 131.8 m² | 113.1 m² |
| Total heating surface | 131.8 m² | 113.1 m² |
Power plant
| Property | 1891 variant | 1897 variantt |
|---|---|---|
| Driver diameter | 1,330 mm | |
| Boiler pressure | 11 bar | 12 bar |
| Expansion type | simple expansion | compound |
| Cylinders | two, 480 x 700 mm | two, HP: 480 x 700 mm and LP: 650 x 700 mm |
Power
| Property | 1891 variant | 1897 variantt |
|---|---|---|
| Power source | steam | |
| Indicated power | 425 kW (578 PS) | |
| Top speed | 55 km/h | |
| Starting effort | 113.4 kN | 80.0 kN |
| Starting effort simple | 96.0 kN | |
Calculated values
| Property | 1891 variant | 1897 variantt |
|---|---|---|
| Factor of adhesion | 1 : 3.68 | 1 : 5.33 |
| Optimal speed | 23 km/h | 32 km/h |
| Power-to-weight ratio | 6.3 kW/t | 6.1 kW/t |
| Tractive force/Heating surface | 1 : 17.97 | 1 : 14.78 |
| Grate area/Heating surface | 1 : 77.53 | 1 : 66.53 |
