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German Reichsbahn class 87
Since the port of Hamburg was significantly lower than the Reichsbahn facilities, Orenstein & Koppel were ordered to build a powerful tank locomotive in 1927. With a maximum axle load of 17.5 tonnes, five coupled axle...
| German Reichsbahn class 87Remove | |
|---|---|
| Variant | Standard |
| Built | 1927-1928 |
| Manufacturers | O&K |
| Wheel arrangement | E t |
| Gauge | 1435 mm |
| Length | 13300 mm |
| Service mass | 85600 kg |
| Top speed | 45 km/h |
| Power | |
| Engine |
General
| Property | German Reichsbahn class 87 Standard Remove |
|---|---|
| Built | 1927-1928 |
| Manufacturers | O&K |
| Wheel arrangement | 0-10-0T (Ten-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | German Reichsbahn class 87 Standard Remove |
|---|---|
| Length | 13.30 m |
| Wheelbase | 6.20 m |
| Empty mass | 68 t |
| Service mass | 85.6 t |
| Adhesion mass | 85.6 t |
| Rigid wheelbase | 3.40 m |
| Axle load | 17.4 t |
| Water capacity | 9,000 l |
| Fuel capacity | 3 t (coal) |
Boiler
| Property | German Reichsbahn class 87 Standard Remove |
|---|---|
| Grate area | 2.39 m² |
| Firebox surface | 10 m² |
| Tube heating surface | 107.37 m² |
| Evaporative heating surface | 117.37 m² |
| Superheater surface | 47 m² |
| Total heating surface | 164.4 m² |
Power plant
| Property | German Reichsbahn class 87 Standard Remove |
|---|---|
| Driver diameter | 1,100 mm |
| Boiler pressure | 14 bar |
| Expansion type | simple expansion |
| Cylinders | two, 600 x 550 mm |
Power
| Property | German Reichsbahn class 87 Standard Remove |
|---|---|
| Power source | steam |
| Indicated power | 691 kW (939 PS) |
| Top speed | 45 km/h |
| Starting effort | 214.2 kN |
Calculated values
| Property | German Reichsbahn class 87 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.92 |
| Optimal speed | 19 km/h |
| Power-to-weight ratio | 8.1 kW/t |
| Heating Surface Equivalent | 261.4 m² |
| Cylinder volume/HSE | 1 : 1,189.95 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 27.22 |
| Grate area/Heating surface | 1 : 68.77 |
| Firebox/Tube surface | 1 : 10.74 |
| Total/Superheater | 1 : 2.50 |
