PKP class Ok22

PKP class Ok22
Ok22
Ok22-31 in Wolsztyn
Power type Steam
Builder Hanomag
Fablok
Model P8
Build date 1923 - 1928
Total produced 190
Configuration 4-6-0
Gauge 1,435 mm (4 ft 8 12 in)
Leading wheel
diameter
1,000 mm (39 in)
Driver diameter 1,750 mm (69 in)
Wheelbase 8,350 mm (27 ft 5 in)
Length 18,612 mm (61 ft 0.8 in)
18,940 mm (62 ft 2 in)
Height 4,625 mm (15 ft 2.1 in)
Axle load 17 t (17 long tons; 19 short tons)
Locomotive weight 78.9 t (77.7 long tons; 87.0 short tons)
Tender weight 50 t (49 long tons; 55 short tons)
Tender capacity 10 t (9.8 long tons; 11 short tons)
Boiler pressure 1.2 MPa (170 psi)
Firegrate area 14.1 m2 (152 sq ft)
Heating surface:
Firebox
4.01 m2 (43.2 sq ft)
Cylinders 2
Cylinder size 575 mm (22.6 in)
Tractive effort 8500 kgf (83 kN)
Career PKP
Class Ok22

Ok22 is the name for a Polish passenger steam locomotive used by 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 German class P8 (Polish PKP class Ok1)

Contents

History

Introduction

The production lasted from 1923 when the first five engines were built in Germany Hanomag until 1928 when serial production was started in Fablok in Chrzanów. 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

During wartime Ok22 bore German classification numbers 38 4501 - 38 4630.

Present day

Only two examples have survived to this day. 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



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