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German Reichsbahn class 04
In order to increase the power of the standard locomotives while at the same time reducing the specific consumption, two medium-pressure test locomotives were built on the basis of the class 03 and designated as class...
General
| Property | German Reichsbahn class 04 reduced boiler pressure |
|---|---|
| Built | 1932 |
| Manufacturers | Krupp |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | German Reichsbahn class 04 reduced boiler pressure |
|---|---|
| Length | 23.91 m |
| Wheelbase | 12.00 m |
| Rigid wheelbase | 4.50 m |
| Total wheelbase | 20.23 m |
| Empty weight | 97.3 t |
| Service weight | 106.3 t |
| Adhesive weight | 59.5 t |
| Axle load | 18.8 t |
| Water capacity | 32,000 l |
| Fuel capacity | 10 t (coal) |
Boiler
| Property | German Reichsbahn class 04 reduced boiler pressure |
|---|---|
| Grate area | 4.1 m² |
| Firebox surface | 20 m² |
| Tube heating surface | 186.8 m² |
| Evaporative heating surface | 206.8 m² |
| Superheater surface | 88 m² |
| Total heating surface | 294.8 m² |
Power plant
| Property | German Reichsbahn class 04 reduced boiler pressure |
|---|---|
| Driver diameter | 2,000 mm |
| Boiler pressure | 16 bar |
| Expansion type | compound |
| Cylinders | four, HP: 350 x 660 mm and LP: 520 x 660 mm |
Power
| Property | German Reichsbahn class 04 reduced boiler pressure |
|---|---|
| Power source | steam |
| Indicated power | 1,545 kW (2,101 PS) |
| Top speed | 130 km/h |
| Starting effort | 75.7 kN |
| Starting effort simple | 90.8 kN |
Calculated values
| Property | German Reichsbahn class 04 reduced boiler pressure |
|---|---|
| Factor of adhesion | 1 : 7.71 |
| Optimal speed | 126 km/h |
| Power-to-weight ratio | 14.5 kW/t |
| Heating Surface Equivalent | 482.8 m² |
| Cylinder volume/HSE | 1 : 553.36 |
| Adhesive weight/Total | 1 : 1.79 |
| Tractive force/Heating surface | 1 : 5.36 |
| Grate area/Heating surface | 1 : 71.90 |
| Firebox/Tube surface | 1 : 9.34 |
| Total/Superheater | 1 : 2.35 |
