Oi101

 

 

KukHB 328.003 (BMAG 5458/1916), unrealized CFR 2076. This locomotive became Oi101-3 and in 1939 was taken over by DRG and re-numbered 37 403. It was withdrawn by DB in 1951. Data and location unknown. Source: LAÖ.

 

 

Last example delivered to CFR was 2073 (BMAG 5455/1916), which was finally withdrawn in January 1964. Source: ITFR vol 1.

 

 

 

 

 

 

 

 

PKP class designation Oi101 was assigned to twenty class 328 locomotives taken over as a part of reparations from kaiserlich und königliche Heeresbahn (kukHB) – railways of the Austro-Hungarian army. Their provenience was, however, more complex.

Romanian state railways CFR (Căile Ferate Române) ordered locomotives with the 1-3-0 axle arrangement in considerable numbers. Between 1905 and 1913 as many as 192 Moguls were purchased from German, Austrian and Russian manufacturers; these were engines for mixed traffic, with 1350 or 1468 mm drivers. Apart from them, further 33 passenger locomotives with 1665 mm drivers were built by StEG and Kolomna. In 1910 their superheated variant was ordered from Henschel, 25 examples being supplied (numbered 2034 through 2058, factory numbers 10258/1910 through 10282/1910). In 1912 next order was placed, this time with Belgian Societè Generale d’Exploitation de Chemins de Fer (commonly known as Tubize), for eleven examples, numbered 2059 through 2069 (factory numbers 1719/1912 through 1729/1912). In 1916 a third batch of 24 locomotives was ordered from BMAG (Schwartzkopff), numbered 2070 through 2093 (factory numbers 5452/1916 through 5475/1916), but only first four had been delivered when Romania entered the war on the side of Entente. The rest were promptly sold to kukHB and classed 328. All survived until 1918 and all were handed over to Poland. Although of Austrian origin, they had not come from state railways kkStB, hence class designation Oi101 in the range reserved for locomotives ‘of foreign origin other than German or Austrian’. All twenty examples were still in use in 1939. Thirteen were taken over by the Germans and impressed into DRG as class 374. Seven fell into Soviet hands, but all later became German war booty; four were re-numbered 37 414 through 417 and three served with Ostbahn.

After the war six engines were returned and numbered Oi101-1 through 6; one of them, Oi101-2 (pre-war Oi101-12, BMAG 5467/1916) was initially erroneously included into class Oi1 and numbered Oi1-4. Oi101-7 (BMAG 5462/1916, after 1939 37 407) was taken over in 1945 by MPS and remained in use with its German number until November 1952. Four locomotives were returned by DR in late 1955 and were scrapped without being assigned new service numbers. The rest remained with DB, but saw no use and were formally written off on December 31, 1951. Post-war service of this type with PKP was rather short, the last example (Oi101-5, pre-war Oi101-20, BMAG 5475/1916) being withdrawn in June 1954. Romanian superheated passenger Moguls remained in service until late 1960s; last two, 2064 (Tubize 1724/1912) and 2066 (Tubize 1726/1912) were withdrawn in August 1968. Not a single engine of this type has been preserved.


 

Main technical data

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1910 – 1916

2.

Total built / used in Poland

-

60 / 20

3.

Tender class

-

15C11

4.

Axle arrangement

-

1-3-0

5.

Design maximum speed

km/h

90

6.

Cylinder bore

mm

2 ´ 520

7.

Piston stroke

mm

650

8.

Engine rating

kW/hp

9.

Tractive effort

kG

9 800

10.

Boiler pressure

MPa

1.22

11.

Grate dimensions

m X m

2.62 m2

12.

Firebox heating surface

m2

13.

Distance between tube plates

mm

14.

Number of flue tubes

-

15.

Heating surface of flue tubes

m2

16.

Number of smoke tubes

-

17.

Heating surface of smoke tubes

m2

18.

Evaporating surface, total

m2

128.0

19.

Superheater heating surface

m2

35.0

20.

Diameter of drivers

mm

1 665

21.

Diameter of idlers front/rear

mm

22.

Total weight, empty

kg

23.

Total weight, working order

kg

62 900

24.

Weight on drivers, working order

kg

49 100

25.

Weight with tender, empty

kg

26.

Weight with tender, working order

kg

106 900

27.

Maximum axle load

T

16.0

28.

Axle base (with tender)

mm

13 844

29.

Overall length (with tender)

mm

16 886

30.

Brake type

-

Hardy / Westinghouse

 

 

References and acknowledgments

 

-       LP, ITFR;

-       www.pospichal.net/lokstatistik (website by Josef Pospichal);

-       www.beitraege.lokomotive.de/datenbank (website by Ingo Hütter).