Prussian G 8

Prussian G 8 DRG Class 55.16–22 ÖBB Class 755 PKP Tp 3 FS Class 422 SNCB Type 80
Prussian G 8, "Mainz "
Type and origin Builder AG Vulcan Stettin Grafenstaden Hanomag Henschel Schichau Build date 1902–1913 Total produced 1,054
Specifications  • German G 44.14 Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Driver dia. 1,350 mm (53.15 in) Length: ​  • Over beams 16,938 mm (55 ft 6.9 in) (3 T 12) / 17,968 mm (58 ft 11.4 in) (3 T 16.5) Axle load 14.7 t (14.5 long tons; 16.2 short tons) Adhesive weight 58.5 t (57.6 long tons; 64.5 short tons) Service weight 58.5 t (57.6 long tons; 64.5 short tons) Water cap. 12.0 m3 (2,600 imp gal; 3,200 US gal) / 15.0 m3 (3,300 imp gal; 4,000 US gal) / 16.0 m3 (3,500 imp gal; 4,200 US gal) / 16.5 m3 (3,600 imp gal; 4,400 US gal) Boiler pressure 12 bar (1,200 kPa; 170 psi) Heating surface: ​  • Firebox 2.25 m2 (24.2 sq ft) / 2.35 m2 (25.3 sq ft)  • Evaporative 135.2 m2 (1,455 sq ft) / 140.0 m2 (1,507 sq ft) Superheater: ​  • Heating area 31.7 m2 (341 sq ft) / 41.2 m2 (443 sq ft) Cylinder size 575 mm (22.64 in) / 590 mm (23.23 in) / 600 mm (23.62 in) Piston stroke 660 mm (25.98 in)
Performance figures Maximum speed 55 km/h (34 mph) Indicated power 809 kW (1,085 hp)
Career Numbers DRG 55 1601–2268 Retired 1969

The Prussian Class G 8 locomotives were eight-coupled, superheated, freight locomotives operated by the Prussian state railways. There were two variants: the G 8 built from 1902 with a 14 tonne axle load and the "reinforced G 8" (verstärkte G 8) built from 1913 (later designated the G 8.1) with a 17-tonne (17-long-ton; 19-short-ton) axle load. The latter was the most numerous German state railway (Länderbahn) locomotive, over 5,000 examples being built.