| Powertype | Steam |
|---|---|
| Builder | Hanomag (5) Fablok (185) |
| Builddate | 1923, 1928–1934 |
| Totalproduction | 190 |
| Whytetype | 4-6-0 |
| Uicclass | 2′C h2 |
| Gauge | Russian Railways |
| Leadingdiameter | 1,000 mm (39.37 in) |
| Driverdiameter | 1,750 mm (68.90 in) |
| Wheelbase | 8.350 m (27 ft 5 in) |
| Length | 18.612 m (61 ft 1 in) 18.940 m (62 ft 2 in) |
| Height | 4.625 m (15 ft 2 in) |
| Axleload | 17 tonnes (17 long tons; 19 short tons) |
| Weightondrivers | 51.0 tonnes (50.2 long tons; 56.2 short tons) |
| Locoweight | 78.9 tonnes (77.7 long tons; 87.0 short tons) |
| Tenderweight | 50 tonnes (49 long tons; 55 short tons) |
| Tendercap | 10 t (9.8 long tons; 11 short tons) |
| Boilerpressure | 12 kg/cm2 |
| Firearea | 4.01 m2 (43.2 sq ft) |
| Fireboxarea | 14.1 m2 (152 sq ft) |
| Totalsurface | 182.1 m2 (1,960 sq ft) |
| Superheaterarea | 61.6 m2 (663 sq ft) |
| Cylindercount | Two, outside |
| Cylindersize | 575 by 630 mm (22.6 by 24.8 in) |
| Tractiveeffort | 123 kN (27,650 lbf) |
| Operator | PKP » DRB » PKP |
| Operatorclass | PKP: Ok22 DRB: 3845 |
| Fleetnumbers | PKP: Ok22-1 to Ok-22-190 DRB: 38 4501 to 38 4630 |
| Disposition | Two preserved, remainder scrapped |
PKP class Ok22 is a class of ordinary passenger (O) 4-6-0 (k) steam locomotive designed in 1922 for Polskie Koleje Państwowe (Polish State Railways, PKP). It was the first locomotive designed in Poland after World War I, so the design work was done jointly with Hanomag, based on the Prussian P 8 (PKP class Ok1)
History
Introduction
The first five engines were built in Germany by Hanomag in 1923. Polish production started in 1928 and lasted until 1934 after which 185 locomotives had been manufactured by Fablok in Chrzanów.[1] The first Polish-built locomotive (Ok22-6) was ready on December 31, 1928. Polish versions of the locomotive bore some improvements and changes compared with German ones, and were similar to PKP class Ty23.[clarification needed] Ok22 locomotives were the first on the PKP to be equipped with electric lights.[citation needed]
Wartime
After the German invasion of Poland in World War II, most Ok22 locomotives were taken into the Deutsche Reichsbahn fleet as 38 4501 to 38 4630.
Present day
Only two examples have survived. Ok22-23 in Jaworzyna Śląska and Ok22-31 in Wolsztyn. Ok22-31 was an operational engine. It ran until 1997, and after retirement became a stationary exhibit. In 2004 the machine was restored to working order again, and it ran until 2009. It is currently static.
See also
References
- ^ Durrant 1972, p. 108.
- Durrant, A. E. (1972). The Steam Locomotives of Eastern Europe. Newton Abbot, Devon: David and Charles. ISBN 0-7153-4077-8.
- "Ok22" (in Polish). Live Machines. Retrieved June 6, 2007.