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Prussian G 54
German Reichsbahn class 548-10
Germany | 1901
767 produced
G 5<sup>4</sup> No. 1288
G 54 No. 1288

In order to further improve the suitability for everyday use of the already successful G 52 with compound engine, its power was increased and the chassis further developed. It was hoped that the latter conversion would provide better running qualities in curves and generally less wear when frequently driving through tighter radii. Regarding the chassis, not only was the wheelbase reduced, but the front Adams axle was exchanged for a Krauss-Helmholtz bogie. As a result, the first coupled axle was also slightly deflected when cornering, which significantly improved the driving characteristics. In addition, the middle axle of the three-axle tender was designed to be laterally displaceable.

To increase power, the diameters of the two cylinders were increased by 20 and 70 mm to 500 and 750 mm, respectively, and the boiler was positioned higher. The result was an indicated output of 780 hp, which, in conjunction with three coupled axles with 1,350 mm wheels, led to high tractive effort.

A total of 767 examples were built, most of which were delivered to the Prussian State Railways. Single-digit numbers each went to Mecklenburg, Alsace-Lorraine, the LBE, the Prussian Military Railway and the port railway in Frankfurt. The last 25 locomotives were again delivered with a simple Adams axle, these were designated G 55. In addition, there was the G 53, which was delivered in smaller numbers and was equipped with a simple engine in the same way as the G 51.

At the Reichsbahn, the locomotives were numbered 548-10. Of a total of 371 pieces in the 1923 redesignation plan, 278 were adopted two years later. During this time, 22 engines were converted to superheated steam, increasing the output to 1,020 hp. The last examples in Germany were retired by 1948 or 1951, depending on the source, some of which were locomotives that had returned from abroad during World War II.

Variant1901 variant1906 variant
General
Built1901-19051906-1910
ManufacturerBMAG, Borsig, Grafenstaden, Hanomag, Henschel, Hohenzollern, Humboldt
Axle config2-6-0 (Mogul) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length53 ft 0 9/16 in
Length loco32 ft 2 9/16 in
Wheelbase19 ft 8 1/4 in
Rigid wheelbase10 ft 9 15/16 in
Total wheelbase41 ft 4 7/8 in
Empty weight107,145 lbs
Service weight119,490 lbs127,647 lbs
Adhesive weight94,799 lbs98,326 lbs
Total weight192,243 lbs200,400 lbs
Axle load31,614 lbs32,776 lbs
Water capacity4,227 us gal3,170 us gal
Fuel capacity13,228 lbs (coal)11,023 lbs (coal)
Boiler
Grate area24.5 sq ft
Firebox area116.3 sq ft
Tube heating area1,358.4 sq ft
Evaporative heating area1,474.7 sq ft
Total heating area1,474.7 sq ft
Variant1901 variant1906 variant
Power Plant
Driver diameter53.2 in
Boiler pressure174 psi
Expansion typecompound
Cylinderstwo, HP: 19 11/16 x 24 13/16 in
and LP: 29 1/2 x 24 13/16 in
two, HP: 20 1/2 x 24 13/16 in
and LP: 29 1/2 x 24 13/16 in
Power
Power sourcesteam
Indicated power770 hp (574 kW)
Optimal speed27 mph25 mph
Top speed40 mph
Starting effort18,516 lbf19,536 lbf
with start valve22,219 lbf23,443 lbf
Calculated Values
steam locomotive
freight
last changed: 05/2022
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