Pd4

Specifications
Specifications
Trailing dia.	1,000 mm (3.3 ft)
Carrying wheel diameter	1,980 mm (6.50 ft)
Wheelbase	7,600 mm (24.9 ft)
• Drivers	1,980 mm (6.50 ft)
Length	17,811 mm (58.435 ft)
Axle load	16.4 t (36,000 lb)
Loco weight	54.5 t (120,000 lb)
Total weight	104.6 t (231,000 lb)
Firebox:
• Grate area	2.27 m2 (24.4 sq ft)
Boiler pressure	12 at
Heating surface:
• Firebox	141.8 m2 (1,526 sq ft) (other data: 136.4 m2 (1,468 sq ft))
Piston stroke	600 mm (2.0 ft)

Type and origin
Type and origin
Power type	steam
Builder	AG Vulcan Stettin and others
Build date	1905–1911

Pd4
Pd4
	Prussian locomotive S5²
Power type
Type and origin
Power type	steam
Builder	AG Vulcan Stettin and others
Build date	1905–1911
Trailing dia.
Specifications
Trailing dia.	1,000 mm (3.3 ft)
Carrying wheel diameter	1,980 mm (6.50 ft)
Wheelbase	7,600 mm (24.9 ft)
• Drivers	1,980 mm (6.50 ft)
Length	17,811 mm (58.435 ft)
Axle load	16.4 t (36,000 lb)
Loco weight	54.5 t (120,000 lb)
Total weight	104.6 t (231,000 lb)
Firebox:
• Grate area	2.27 m2 (24.4 sq ft)
Boiler pressure	12 at
Heating surface:
• Firebox	141.8 m2 (1,526 sq ft) (other data: 136.4 m2 (1,468 sq ft))
Piston stroke	600 mm (2.0 ft)
Maximum speed
Performance figures
Maximum speed	100 km/h (62 mph)
Tractive effort	6,200 kg (13,700 lb)

Pd4 was a Polish designation for the Polish State Railways express steam locomotive of the Prussian S5² series, produced between 1905 and 1911. In German railways, it was designated as series (Br) 13^6-8. The locomotive had a two-cylinder compound steam engine using saturated steam. In Poland, during the interwar period, 29 locomotives of this series were in operation, and after the war, 14 were operational until 1955.