Prussian G 8.1

G 8.1 (Prussia, Mecklenburg, Alsace-Lorraine) DRG Class 55.25–56, 55.58 DB Class 055 PKP Tp4

Number(s)	DRG 55 2501–3366, 3368–5665, 5801–5810, 5851–5852 DR 55 5898, 7251–7260, 8170
Quantity	5,155
Year(s) of manufacture	1913–1921
Retired	1973
Axle arrangement	D h2
Gauge	1,435 mm (4 ft 8 ¹⁄₂ in) standard gauge
Length over buffers	18,290 mm (60 ft ¹⁄₈ in)
Service weight	69.9 t (68.8 long tons; 77.1 short tons)
Adhesive weight	69.9 t (68.8 long tons; 77.1 short tons)
Axle load	17.6 t (17.3 long tons; 19.4 short tons)
Top speed	55 km/h (34 mph)
Indicated Power	927 kW (1,243 hp)
Driving wheel diameter	1,350 mm (53.15 in)
No. of cylinders	2
Cylinder bore	600 mm (23.62 in)
Piston stroke	660 mm (25.98 in)
Boiler Overpressure	14 bar (1,400 kPa; 200 psi)
Grate area	2.58 m² (27.8 sq ft)
Evaporative heating area	143.28 m² (1,542.3 sq ft)
Tender	Prussian 3 T 16,5/20 pr 2'2' T 21,5
Water capacity	16.5 m³ (580 cu ft)/20.0 m³ (710 cu ft)/21.5 m³ (760 cu ft)

The Prussian G 8.1 was a heavier, stronger development of the G 8 and was initially referred to as a 'strengthened standard class' (Verstärkte Normalbauart).

History

The engines were built by Robert Garbe between 1913 and 1921, and formed the largest class of state railway locomotives in Germany. The boiler was larger than that of the G 8, and the loco was deliberately designed to be heavier, so that it could haul even the heaviest trains without sanding, due to its higher adhesive weight. Because it had a high axle load, the G 8.1 could however only be used on main lines. In addition to its employment with heavy goods traffic, it was later used for heavy pusher duties as well.

A total of 4,958 engines alone were made for the Prussian state railways and, later, the Deutsche Reichsbahn. The Imperial Railways in Alsace-Lorraine were given 137 (see the Alsace-Lorraine G 8.1), 10 went to the Grand Duchy of Mecklenburg Friedrich-Franz Railway, 50 to the German military railways in the First World War, 6 or 10 to the Gewerkschaft Deutscher Kaiser coal mine at Duisburg and 185 were sold abroad to Poland, Romania and Sweden).

In 1925 the Reichsbahn took over 3,121 Prussian locomotives as Class 55.25–56 with operating numbers 55 2501–5622 (less 55 3367). The twelve Mecklenburg engines (two of which had been bought in 1920 by the Prussian state railways) were incorporated as Class 55.58 with the numbers 55 5801–5810 and 55 5851–5852. Included amongst the Prussian locomotives were also the ten G 8.1 from the Imperial Railways in Alsace-Lorraine. In 1935, 43 more locomotives came into the Reichsbahn fleet from the Saarland as numbers 55 5623–5665, the last of which came originally from the Alsace-Lorraine too. In the Second World War numerous locomotives from Poland and Lithuania were also designated as Class 55 engines. The engines taken over from Belgium were given the numbers 55 5666–5699. After 1945 the DR in East Germany added a further locomotive from Poland as 55 5898, and several from Belgium and France as 55 7251–7260 and 55 8170.

Between 1934 and 1941 a total of 691 G 8.1s were fitted with a leading axle in order to allow a higher top speed and to reduce the average axle load. The converted locomotives were redesignated as DRG Class 56.2–8.

55 3345 at the Bochum Dahlhausen Railway Museum

More than 1,000 engines remained after the end of the Second World War. In 1968 the DR still had 150 locomotives, and the Deutsche Bundesbahn another 50, which they reclassified as Class 055 from 1968. The last G 8.1 with the DB, number 055 538-3, was taken out of service on 21 December 1972.

The vehicles were coupled with Prussian 3 T 16,5, 3 T 20 and 2'2' T 21,5 tenders.

Number 55 3345 (ex Cassel 5159) has been preserved. It was built in 1915 by Henschel and is today in the Bochum Dahlhausen Railway Museum.

External links

Wikimedia Commons has media related to Prussian G 8.1.

There is a relevant English-language forum at Railways of Germany

Classes of Prussian locomotive and railcars

Express train locomotives	S 1 S 2 S 3 S 4 S 5.1 S 5.2 S 6 S 7 S 8 S 9 (Exp.) S 9 S 10 S 10.1 S 10.2 S 11

Passenger and express train locomotives	P 1 P 2 P 3 P 3.1 P 3.2 P 4 P 4.1 P 4.2 P 6 P 7 P 8 P 10

Goods train locomotives	G 1 G 2 G 3 G 4.1 G 4.2 G 4.3 G 5.1 G 5.2 G 5.3 G 5.4 G 5.5 G 7.1 G 7.2 G 7.3 G 8 G 8.1 G 8.2 G 8.3 G 9 (Mallet) G 9 G 10 G 12 (C.F.O.A) G 12 G 12.1

Tank locomotives	T 0 T 1 T 2 T 2/T 4 T 2.1 T 2/T 3/T 4 T 3 T 4 T 4.1 T 4.2 T 4.3 T 5.1 T 5.2 T 6 T 7 T 8 T 9 Elberfeld T 9 Langenschwalbach T 9.1 T 9.2 T 9.3 T 10 T 11 T 12 T 13 Hagans T 13.1 T 14 T 14.1 T 14 (Exp.) T 15 T 16 (Exp.) T 16 T 16.1 T 18 T 20 T 26 T 28

Narrow gauge locomotives	T 31 T 32 T 33 T 34 T 35 T 36 T 37 T 38 T 39 T 40

Electric locomotives	to follow

Railbuses	to follow

Prussian state railways

Classes of Ferrovie dello Stato locomotives

Steam

Tender locomotives	100 102 103 110^I 110^II 111 112 113 114 116 117 118 119^I 119^II 120 121 122 136 139 140 150 155 158 160 161 162 163 164 170 180 181^I 181^II 182^I 182^II 183 185 186 187 190 193 194 195 196 197 198 200 201 206 207 208 209 211 212 215 216 217 218 219 220 221 222 223 224 255 260 261 262 265 268 269 270 271 272 290 291 292 293 310 320 380 385 388 390 391 394 395 396 397 400 410 420 421 422 423 424 425 450 451 452 453 454 455 460 470 471 472 473 474 475 476 477 478 479 480 482 499^I 499^II 500 510 512 513 530 540^I 540^II 542 543 545 550 552 553 554 555 556 560 600 601 603 604 605 606 607 623 625 626 630 640^I 640^II 645 650 652 653 656 660 666 670 671 672 675 676 677 680 681 682 683^I 683^II 685 686 687 688 690^I 690^II 691 720 728 729 730 731 735 736 737 740 741^I 741^II 743^I 743^II 744 745 746 747^I 747^II 750

Tank locomotives	800^I 800^II 801 802^I 802^II 803^I 803^II 804 805 806 809 810^I 810^II 811 812 813 814 815^I 815^II 815^III 816 817 818 819 820^I 820^II 821^I 821^II 822 823 824 825 826^I 826^II 827 828^I 828^II 828^III 829 830^I 830^II 831 835 842 848 849 850^I 850^II 851 870 871 874^I 874^II 875 876 877 880^I 880^II 881 882 885 893 894 895 896^I 896^II 897 898 899^I 899^II 900 902 904 905 906 910 912 915 940 950 980 981 999

Narrow gauge locomotives	R.201 R.202 R.300 R.301 R.302 R.305 R.306 R.310 R.370 R.401 R.402 R.410 R.440 R.441 R.442 R.443 R.600 P U

Electric

Rechargeable battery	E.421

650 V DC Third rail	E.220 E.320 E.321 E.420 E.620

3,6 kV AC Three-Phase	E.330 E.331 E.332 E.333 E.360 E.380 E.390 E.430 E.431 E.432 E.550 E.551 E.552 E.554

10,6 kV AC Three-Phase	E.470 E.471 E.472 E.570

3 kV DC	E.321 E.322 E.323 E.324 E.326 E.400 E.402A E.402B E.403 E.404 E.405 E.412 E.414 E.424 E.428 E.434 E.444 E.444R E.447 E.453 E.454 E.464 E.621 E.625 E.626 E.632 E.633 E.636 E.645 E.646 E.652 E.655 E.656

25 kV AC	E.491 E.492

Diesel

Light shunters	206 207 208^I 208^II 209 210 211 R.212 213^I 213^II 214 215 216 218^I

Shunters	218^II 225 234 235 236 245 250 255

Heavy shunters	Ne 120 D.141 RD.142 D.143 D.145 D.146 D.147 356 372 Ne 700

Train locomotives	D.341 D.342 D.343 D.345 D.442 D.443 D.445 D.449 D.461

see also Category:Rolling stock of Italy

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Prussian G 8.1

History

See also

External links