PKP class OKl27

Specifications
Configuration:;
• Whyte	2-6-2T
• UIC	1′C1′ h2t
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Leading dia.	860 mm (33.86 in)
Driver dia.	1,500 mm (59.06 in)
Trailing dia.	860 mm (33.86 in)
Length	12.863 m (42 ft 2 in)
Adhesive weight	67.7 t (66.6 long tons; 74.6 short tons)
Loco weight	85.1 t (83.8 long tons; 93.8 short tons)
Fuel type	Coal
Fuel capacity	4.0 t (3.9 long tons; 4.4 short tons)
Water cap	10,000 l (2,200 imp gal; 2,640 US gal)
Firebox:; • Firegrate area	2.6 m2 (28 sq ft)
Boiler pressure	14 kg/cm2 (1.37 MPa; 199 psi)
Heating surface	122.7 m2 (1,321 sq ft)
Superheater:;
• Heating area	45.2 m2 (487 sq ft)
Cylinders	Two, outside
Cylinder size	540 mm × 630 mm (21.26 in × 24.80 in)

Type and origin
Power type	Steam
Builder	Cegielski (Poznań)
Build date	1928–1933
Total produced	122

PKP OKl27
	OKl27-41 in Chabówka
Type and origin
Power type	Steam
Builder	Cegielski (Poznań)
Build date	1928–1933
Total produced	122
Specifications
Configuration:;
• Whyte	2-6-2T
• UIC	1′C1′ h2t
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Leading dia.	860 mm (33.86 in)
Driver dia.	1,500 mm (59.06 in)
Trailing dia.	860 mm (33.86 in)
Length	12.863 m (42 ft 2 in)
Adhesive weight	67.7 t (66.6 long tons; 74.6 short tons)
Loco weight	85.1 t (83.8 long tons; 93.8 short tons)
Fuel type	Coal
Fuel capacity	4.0 t (3.9 long tons; 4.4 short tons)
Water cap	10,000 l (2,200 imp gal; 2,640 US gal)
Firebox:; • Firegrate area	2.6 m2 (28 sq ft)
Boiler pressure	14 kg/cm2 (1.37 MPa; 199 psi)
Heating surface	122.7 m2 (1,321 sq ft)
Superheater:;
• Heating area	45.2 m2 (487 sq ft)
Cylinders	Two, outside
Cylinder size	540 mm × 630 mm (21.26 in × 24.80 in)
Performance figures
Maximum speed	80 km/h (50 mph)
Power output	930 PS (680 kW)
Tractive effort	103 kN (23,000 lbf)
Career
Operators	PKP » DRB » PKP
Class	PKP: OKl27; DRB: 7512
Numbers	PKP: OKl27-1 to OKl27-122; DRB: 75 1201 to 75 1320

PKP class OKl27 is a class of ordinary passenger (O) tank (K) 2-6-2 (l) steam locomotives designed in 1927 for Polskie Koleje Państwowe (Polish State Railways, PKP). It was the first completely Polish construction. The design was prepared by eng. Bryling.

History

Production

Hipolit Cegielski Metal Works in Poznań produced 122 engines in the period of 1928–1933.[1]

Operation

The OKl27 class serviced mainly local transport, especially suburban lines.

Wartime

After the German invasion of Poland in World War II, 120 of the 122 OKl27 locomotives were taken into the Deutsche Reichsbahn fleet as 75 1201 to 75 1320.[2]

Preservation

Four engines have survived: OKl27-10 in Skierniewice (as an exhibit), OKl27-26 in Warsaw Railroad Museum (as an exhibit), OKl27-27 in Gdynia (as an exhibit) and OKl27-41 in Chabówka.

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References

Durrant 1972, pp. 109–110.
Durrant 1972, p. 111.

Durrant, A. E. (1972). The Steam Locomotives of Eastern Europe. Newton Abbot, Devon: David and Charles. ISBN 0-7153-4077-8.CS1 maint: ref=harv (link)
"Article at Live Machines site". Retrieved June 6, 2007.

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[FOOTNOTEDurrant1972109–110-1] Durrant 1972, pp. 109–110.

[FOOTNOTEDurrant1972111-2] Durrant 1972, p. 111.