Px27
Px27-775 in Museum in Wenecja
Type and origin Power type steam Builder Fablok Serial number 343 & 344 Model W5A Build date 1929 Total produced 2
Specifications Configuration: ​  • Whyte 0-8-0T  • UIC D (Dn2t+t) Gauge 600 mm (1 ft 11+5⁄8 in) Driver dia. 650 mm (26 in) Tender wheels 570 mm (22 in) Minimum curve 30 m (98 ft) Wheelbase 2,400 mm (7 ft 10 in) ​  • Coupled 800 mm (2 ft 7 in) Length 6,120 mm (20 ft 1 in) (9,720 mm or 31 ft 11 in with tender) Width 2,000 mm (6 ft 7 in) Height 3,100 mm (10 ft 2 in) Axle load 4.25 t Loco weight 17 t Tender weight 9 t Tender type 2-axle Fuel type coal Fuel capacity 300 kg coal, 1.5 m3 water Tender cap. 1700 kg coal, 3.3 m3 water Firebox: ​  • Grate area 0.88 m2 (9.5 sq ft) Boiler pressure 13 kg/cm2 Heating surface 38 m2 (410 sq ft) Cylinders 2 Cylinder size 285 mm (11.2 in) bore 350 mm (14 in) stroke Valve gear Heusinger Loco brake Steam and hand
Performance figures Maximum speed 30 km/h (19 mph) Power output 110 hp Tractive effort 4265 kg
Career Operators Wyrzyskie Koleje Powiatowe Polish State Railways (PKP) Number in class 2 Retired 1976 Current owner Narrow Gauge Railway Museum in Wenecja (Px27-775) Disposition exhibit

Px27 is a class of Polish State Railways (PKP) 600 mm (1 ft 11+5⁄8 in) narrow-gauge steam locomotive built by Fablok in Chrzanów, Poland, in 1929 (factory type W5A). Only two locomotives of this class were made, and one, Px27-775, is currently preserved.

In 1927 Wyrzysk County Railways (Wyrzyskie Koleje Powiatowe) ordered two locomotives in the First Locomotive Factory in Poland (Fablok), fit for service on sloping line profile. Fablok designed and manufactured two W5A type locomotives in 1929.^[1] After 1961 these were designated as PKP class Px27. It was a D (0-8-0T) locomotive with a two-axle tender. The design based upon Fablok's earlier W2A type tank locomotive (later Tx26-427). Only after nine years, in 1938 the third and last slightly differing locomotive of W5A type was ordered by other railway (it was later designed as Px38 class).^[1]

Both locomotives, factory numbers 343 and 344, received stock numbers 25 and 26 respectively and stationed in Białośliwie depot.^[1] Both survived World War II, working on their railway. After the war, all county railways were taken over by the Polish State Railways (PKP) and in 1947 the locomotives were included into PKP Px2 collective class and given numbers Px2-801 (ex 26) and 802 (ex 25).^[1] According to new regulations, in 1961 both locomotives were classified as Px27 class, being the only ones in this class (P - locomotive with a tender, x - D axle arrangement, 27 – Polish origin locomotive designed in 1927). Px2-801 (factory no. 344) was renamed Px27-774, and Px2-802 (factory no. 343) was renamed Px27-775.^[1]

After World War II both locomotives worked still on Bydgoszcz-Wyrzysk railway, basing in Białośliwie. Px27-774 was retired on 26 September 1970, and then scrapped.^[1] Px 27-775 worked until 1976, then it was given to Narrow Gauge Railway Museum in Wenecja, as a cold exhibit.^[1] (It might be noted, that also Px38-805 of W5A type is preserved in Wenecja).^[1]

• Pokropiński, Bogdan (2015). Parowozy wąskotorowe produkcji polskiej [Narrow-gauge steam locomotives of Polish production] (in Polish). Warsaw: Wydawnictwa Komunikacji i Łączności. ISBN 978-83-206-1963-8..

• Narrow-gauge railways in Poland

• Px27-775 - Wciąż pod parą Additional photographs and information (Polish)