Steam locomotive Ol49-21

Manufacturer: Fabryka Lokomotyw im. F. Dzierżyńskiego, Chrzanów (Fablok)
Serial number and year of manufacture: 2623/1952
Axle arrangement: 1’C1’
Maximum speed: 100 km / h

Steam overpressure in the boiler: 1,6 MPa (16 at)

Wheel diameter of wheel sets: 850/1750/850 mm

Water/ Coal supply: 25 m³/ 12 t

Service mass: 144 900 kg
Length over buffers: 20 675 mm


Locomotives of this series were designed in Poland for the purpose of operating passenger trains in order to support the worn-out  Ok1 and Ok22 steam locomotives. In all between 1951-54 116 units were built, 112 of which were bought by the Polish State Railways and the remaining 4 were exported to the Korean People's Democratic Republic. The construction of the locomotives was based on most recent technological solutions. Boiler stand and cross-sections of the flow passages of a pair of engine cylinders were developed in line with the American models, well-known from Tr201 / 203 and Ty246 locomotives. In the final period of steam traction, the largest groups of Ol49 series locomotives were located in the following locomotive sheds: Przeworsk, Sierpc, Elk, Zagan, Jarocin and Wolsztyn. The end of their exploitation came in the early '90s, but for the next two decades, several  steam locomotives of this series were operating in Wolsztyn locomotive shed, where they were dedicated to local traffic. Museum copy of Ol49-21, began its service in Kutno and ended it in Ełk -  the locomotive was deleted from the Polish State Railways inventory on 22 October 1993.