Od12

 

 

Factory photo of the kkStB 310 (later 2.27, StEG 1854/1885). This locomotive remained with BBÖ and was withdrawn from use in 1926. Source: www.commons.wikipedia.org.

 

 

Longitudinal section of kkStB class 2. Drawing from my collection.

 

 

 

Between 1877 and 1883 Wiener Neustädter Lokomotivfabrik (WrN) and Lokomotivfabrik Floridsdorf (WLF) built 28 passenger locomotives with the 2-2-0 axle arrangement for Kronprinz Rudolf Bahn (class AR), Lemberg-Czernowitz-Jassy Eisenbahn (class IIIe) and state railways kkStB. They featured Camper lead truck and single-expansion steam engines. After the nationalization of two above-mentioned private railways all were taken over by kkStB and later classed 1. In 1884 WrN developed a slightly modified variant, classed AR III; until 1885, 21 and 8 examples were built by WrN and StEG, respectively, for kkStB, and the former company supplied twelve more for Galizische Transversalbahn. From 13th production example onwards steam pressure was increased from 10 to 11 bar. Furthermore, between 1893 and 1910 sixteen class 1 engines were rebuilt to this standard. Later all were classed 2 and numbered 2.01 through 2.60 (service numbers 2.47, 2.55 and 2.59 were missing, as they had been ‘reserved’ for locomotives which were not modified, so some sources still give the total number as 60).

After WWI Austrian state railways BBÖ kept 23 class 2 engines; last were written off in 1930. Czechoslovakian state railways ČSD received 24 examples, of which seven were withdrawn until 1923 and seventeen were later classed 254.0.  The last one, 254.007 (ex 2.23, StEG 1850.1885) survived until September 1933; several were converted to stationary boilers. One locomotive remained in Russia and one went to the railways of the Kingdom of Serbs, Croatians and Slovenians (withdrawn in 1930). Polish railways PKP took over eight locomotives from second and fourth production batches delivered by WrN. They were used with local trains in southern and south-eastern Poland. Later they were classed Od12. In 1927 four were still in service, but all disappeared from the company’s rosters before 1931.

Class 2 was later developed into class 4, which featured larger drivers (1780 mm in diameter) and slightly modified boiler, but externally differed very little from its predecessor. These engines also served with PKP as class Od13. No class 2 locomotive has been preserved.

 


Main technical data*)

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1884 – 18851)

2.

Total built / used in Poland

-

57 / 8

3.

Tender class

-

12C13

4.

Axle arrangement

-

2-2-0

5.

Design maximum speed

km/h

80

6.

Cylinder bore

mm

2 X 435

7.

Piston stroke

mm

630

8.

Engine rating

kW/hp

370 / 500

9.

Tractive effort

kG

10.

Boiler pressure

MPa

1.12

11.

Grate dimensions

m X m

2.06 m2

12.

Firebox heating surface

m2

7.9

13.

Distance between tube plates

mm

3 900

14.

Number of flue tubes

-

186

15.

Heating surface of flue tubes

m2

116.2

16.

Number of smoke tubes

-

-

17.

Heating surface of smoke tubes

m2

-

18.

Evaporating surface, total

m2

124.1

19.

Superheater heating surface

m2

-

20.

Diameter of drivers

mm

1 680

21.

Diameter of idlers front/rear

mm

995 / -

22.

Total weight, empty

kg

40 700

23.

Total weight, working order

kg

44 700

24.

Weight on drivers, working order

kg

26 700

25.

Weight with tender, empty

kg

26.

Weight with tender, working order

kg

27.

Maximum axle load

T

28.

Axle base (with tender)

mm

11 860

29.

Overall length (with tender)

mm

15 135

30.

Brake type

-

Hardy

 

*) Data for second and fourth batches built by WrN.

1)      Excluding rebuilds.

 

References and acknowledgments

 

-       LP, EZ vol. 1, KT vol. 1;

-       www.pl.wikipedia.org.