PKP class OKz32

PKP OKz32
OKz32 locomotive
Type and origin
Power typeSteam
BuilderH. Cegielski – Poznań
Build date1934–1935
Total produced25
Specifications
Configuration:
​
 • Whyte2-10-2T
 • UIC1′E1′ h2t
Gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge
Leading dia.860 mm (33.86 in)
Driver dia.1,450 mm (57.09 in)
Trailing dia.860 mm (33.86 in)
Minimum curve150 m (492 ft 2 in)
Wheelbase:​
 • Engine11.700 m (38 ft 5 in)
 • Drivers6.400 m (21 ft 0 in)
Length15.320 m (50 ft 3 in)
Height4.620 m (15 ft 2 in)
Axle load17 tonnes
Loco weight118.4 tonnes
Fuel typecoal
Fuel capacity6 tonnes
Water cap.10 m3 (350 cu ft)
Firebox:​
 • Grate area3.8 m2 (41 sq ft)
Boiler pressure15 kg/cm2 (1.47 MPa; 213 psi)
Heating surface184.1 m2 (1,982 sq ft)
Superheater:
​
 • Heating area66 m2 (710 sq ft)
CylindersTwo, outside
Cylinder size630 mm × 700 mm (24.80 in × 27.56 in)
Valve gearHeusinger
Performance figures
Maximum speed75 km/h (47 mph)
Power output1,868 hp (1,393 kW)
Tractive effort17,200 kgf (37,920 lbf)
Career
OperatorsPKP
ClassOKz32
NumbersOKz32-1 to OKz32-25
LocalePoland
Preserved1
Pokropiński 2007, p. 254

PKP Class OKz32 is a Polish tank locomotive of Polskie Koleje Państwowe, designed for hauling passenger trains in mountain regions, built in 1934-1935. The designation stood for passenger (O) tank (K) 2-10-2 (z) steam locomotive accepted in 1932.

History

The locomotive was designed in Poland specially for passenger traffic on mountain route Kraków – Zakopane in Tatra Mountains.[1] It was constructed in H. Cegielski works in Poznań, under direction of Prof. Antoni Xsiężopolski. The first locomotive was made in 1934 and appeared successful. A series of 25 in total was built in 1934-1935 for Polskie Koleje Państwowe.[2] The locomotive could haul heavier trains (350 tonnes), than German-origin TKt1 and TKt2 (250 tonnes), and was faster.[2] They were also used with freight trains.[1]

During World War II 18 locomotives were captured by the Germans and impressed into service as DRG class 953, with numbers 301 to 318 (two of them were first captured by the Soviets, then by the Germans in 1941).[2] Remaining 7 locomotives were seized by the Soviets in Poland and converted to broad gauge by 1941.[2] They served in Ural Mountains during the war. Along with further locomotives captured from the Germans, Soviet Union operated 11 locomotives after the war, until 1966.[3]

After World War II, Poland reclaimed 11 locomotives, receiving new numbers OKz32-1 to 11.[4] They served still until 1970s. One – OKz32-2 (former OKz32-5) was preserved, in Chabówka Railway Museum.[4] It was operable as of 2016.[5]

References

  1. ^ a b Pokropiński 2007, p. 106-108.
  2. ^ a b c d Pokropiński 2007, p. 107-108.
  3. ^ Pokropiński 2007, p. 108-110.
  4. ^ a b Pokropiński 2007, p. 110.
  5. ^ Szymon Jurkowski. "Małopolskie szlaki turystyki kolejowej. 2016 r.". Stalowe Szlaki (in Polish). No. 1/2017 (129). p. 12.
Wikimedia Commons has media related to PKP class OKz32.
  • Pokropiński, Bogdan (2007). Parowozy normalnotorowe produkcji polskiej [Normal gauge steam locomotives of Polish manufacture] (in Polish). Warsaw: Wydawnictwa Komunikacji i Łączności. pp. 108–110, 254. ISBN 978-83-206-1617-0.
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