PKP class Ok22
PKP Ok22 | |
---|---|
Ok22-31 in Wolsztyn | |
Type and origin | |
Power type | Steam |
Builder |
Hanomag (5) Fablok (185) |
Build date | 1923, 1928–1934 |
Total produced | 190 |
Specifications | |
Configuration | 4-6-0 |
UIC classification | 2′C h2 |
Gauge | 1,435 mm (4 ft 8 1⁄2 in) |
Leading wheel diameter | 1,000 mm (39.37 in) |
Driver diameter | 1,750 mm (68.90 in) |
Wheelbase | 8.350 m (27 ft 4.7 in) |
Length |
18.612 m (61 ft 0.8 in) 18.940 m (62 ft 1.7 in) |
Height | 4.625 m (15 ft 2.1 in) |
Axle load | 17 tonnes (17 long tons; 19 short tons) |
Weight on drivers | 51.0 tonnes (50.2 long tons; 56.2 short tons) |
Locomotive weight | 78.9 tonnes (77.7 long tons; 87.0 short tons) |
Tender weight | 50 tonnes (49 long tons; 55 short tons) |
Tender capacity | 10 t (9.8 long tons; 11 short tons) |
Boiler pressure | 12 kg/cm2 (1.2 MPa; 170 psi) |
Firegrate area | 4.01 m2 (43.2 sq ft) |
Heating surface: – Firebox | 14.1 m2 (152 sq ft) |
– Total | 182.1 m2 (1,960 sq ft) |
Superheater area | 61.6 m2 (663 sq ft) |
Cylinders | Two, outside |
Cylinder size | 575 mm × 630 mm (22.6 in × 24.8 in) |
Performance figures | |
Tractive effort | 123 kN (27,650 lbf) |
Career | |
Operator(s) | PKP » DRB » PKP |
Class |
PKP: Ok22 DRB: 3845 |
Number(s) |
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. Ok22 locomotives were the first on the PKP to be equipped with electric lights.
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 is still operational. It ran until 1997, and after retirement became a stationary exhibit. In 2004 the machine was restored to the working order.
See also
References
Wikimedia Commons has media related to PKP class Ok22. |
- ↑ 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". Live Machines (in Polish). Retrieved June 6, 2007.
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