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PKP class OKl27

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PKP OKl27
OKl27-41 inChabówka
Type and origin
Power typeSteam
BuilderCegielski (Poznań)
Build date1928–1933
Total produced122
Specifications
Configuration:
 • Whyte2-6-2T
 • UIC1′C1′ h2t
Gauge1,435 mm (4 ft 8+12 in)standard gauge
Leading dia.860 mm (33.86 in)
Driver dia.1,500 mm (59.06 in)
Trailing dia.860 mm (33.86 in)
Length12.863 m (42 ft 2 in)
Adhesive weight67.7 t (66.6 long tons; 74.6 short tons)
Loco weight85.1 t (83.8 long tons; 93.8 short tons)
Fuel typeCoal
Fuel capacity4.0 t (3.9 long tons; 4.4 short tons)
Water cap.10,000 L (2,200 imp gal; 2,640 US gal)
Firebox:
 • Grate area2.6 m2 (28 sq ft)
Boiler pressure14 kg/cm2 (1.37 MPa; 199 psi)
Heating surface122.7 m2 (1,321 sq ft)
Superheater:
 • Heating area45.2 m2 (487 sq ft)
CylindersTwo, outside
Cylinder size540 mm × 630 mm (21.26 in × 24.80 in)
Performance figures
Maximum speed80 km/h (50 mph)
Power output930 PS (680 kW)
Tractive effort103 kN (23,000 lbf)
Career
OperatorsPKP »DRB » PKP
ClassPKP: OKl27
DRB: 7512
NumbersPKP: OKl27-1 to OKl27-122
DRB: 75 1201 to 75 1320

PKP class OKl27 is a class of ordinary passenger (O)tank (K)2-6-2 (l)steam locomotives designed in 1927 forPolskie Koleje Państwowe (Polish State Railways, PKP). It was the first completelyPolish construction. The design was prepared by eng. Bryling.

History

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Production

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Hipolit Cegielski Metal Works inPoznań produced 122 engines in the period of 1928–1933.[1]

Operation

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The OKl27 class serviced mainly local transport, especially suburban lines.

Wartime

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After the German invasion of Poland in World War II, 107 of the 122 OKl27 locomotives were taken into theDeutsche Reichsbahn fleet as 75 1201 to 75 1307. The remaining 15 were taken into the stock of the Soviet Railways; all but two of which came into German hands and were renumbered 75 1308 to 75 1320.[2]

After the war, most locomotives were restored to Poland and renumbered. While the post-war class remained the same, locomotives were renumbered at random, so a locomotive's pre- and post war identities are (usually) completely different.[3]

Preservation

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Four engines have survived:

See also

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References

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Wikimedia Commons has media related toPKP class OKl27.
  1. ^Durrant 1972, pp. 109–110.
  2. ^Hütter (2021), p. 194.
  3. ^Hütter (2021), pp. 195–197.
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