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Polish State Railways OKl27
The designation OKl27 stands for a passenger (O) tank locomotive (K) with the wheel arrangement 2-6-2 (l), which was designed in 1927. They were the first locomotives designed and built entirely in Poland and a total ...
| Polish State Railways OKl27Remove | |
|---|---|
| Variant | Standard |
| Built | 1927-1933 |
| Manufacturers | Cegielski |
| Wheel arrangement | 1C1 t |
| Gauge | 1435 mm |
| Length | |
| Service mass | 85100 kg |
| Top speed | 80 km/h |
| Power | |
| Engine |
General
| Property | Polish State Railways OKl27 Standard Remove |
|---|---|
| Built | 1927-1933 |
| Manufacturers | Cegielski |
| Wheel arrangement | 2-6-2T (Prairie) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Polish State Railways OKl27 Standard Remove |
|---|---|
| Wheelbase | 8.80 m |
| Empty mass | 67.7 t |
| Service mass | 85.1 t |
| Adhesion mass | 54.2 t |
| Rigid wheelbase | 3.60 m |
| Axle load | 18.1 t |
| Water capacity | 10,000 l |
| Fuel capacity | 4 t (coal) |
Boiler
| Property | Polish State Railways OKl27 Standard Remove |
|---|---|
| Grate area | 2.6 m² |
| Evaporative heating surface | 127.7 m² |
| Superheater surface | 45.2 m² |
| Total heating surface | 172.9 m² |
Power plant
| Property | Polish State Railways OKl27 Standard Remove |
|---|---|
| Driver diameter | 1,500 mm |
| Boiler pressure | 14 bar |
| Expansion type | simple expansion |
| Cylinders | two, 540 x 630 mm |
Power
| Property | Polish State Railways OKl27 Standard Remove |
|---|---|
| Power source | steam |
| Indicated power | 684 kW (930 PS) |
| Top speed | 80 km/h |
| Starting effort | 145.7 kN |
Calculated values
| Property | Polish State Railways OKl27 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.65 |
| Optimal speed | 29 km/h |
| Power-to-weight ratio | 8.0 kW/t |
| Adhesive weight/Total | 1 : 1.57 |
| Tractive force/Heating surface | 1 : 17.60 |
| Grate area/Heating surface | 1 : 66.50 |
| Total/Superheater | 1 : 2.83 |
