List of Largest Locomotives by Mass
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As railroads around the world needed to haul larger quantities of freight efficiently, the title of world's largest locomotive has often been passed to new generations of rolling stock.
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It is very hard to determine what factor makes the locomotive largest: It could be the heaviest, longest, most cylinders, most horse power, or most wheels. It is often defined as the longest in absolute length, however there is even a debate on whether or not to include the tender in the measurement. To establish the "largest" category, several base factors simply take precedence: overall weight, which gives traction over driving axles; actual size (length & height of engine itself); and power, which may be given in terms of raw horsepower, tractive effort, available power at axles (shaft horsepower) or in the case of steam locomotives, available steam on a sustained basis.
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| Name | Railroad | Road number | Builder | Build date | Engine typeing | Wheel | Weight | Power | Disposition |
|---|---|---|---|---|---|---|---|---|---|
| PRR GG1 | Pennsylvania Rail Road (PRR) & PennCentral & Amtrak & NJ Transit | 4800-4938, 900-929 | Altoona Works, General Electric | 1934–1943 | Electric | 2-C+C-2 (4-6-6-4) | 208.9 to 216.4 | 4,629 horsepower (3,452 kW), Tractive Effort: 65,500 lbf | Most scrapped; 15 production locomotives and the prototype preserved in museums |
| Class 461 | Železnice Srbije | ŽS461-0/1, ŽS461-2 | Electroputere Craiova, Romania | 1965 – 1991 | Electric | Co'Co' | 120 t | 5100 kW 7638 horsepower | In operational in Romania,Serbia, Montenegro, Bulgaria, Hungary, Macedonia. |
| Allegheny | Chesapeake and Ohio Railway (C&O) & Virginian Railway (VGN) | 1600 to 1659 (C&O) 900 to 907 (VGN) | Lima Locomotive Works | 1941 – 1948 | Steam | 2-6-6-6 | 544 t | 7,500 horsepower (5,593 kW) | two in static display |
| Big Boy | Union Pacific | X4000 to X4024 | ALCO | 1941 – 1944 | Steam | 4-8-8-4 | 548 t | 6,290 horsepower (4,690 kW) | several in static display |
| XA Triplex | Virginian Railway | 700 | Baldwin | 1916 | Steam | 2-8-8-8-4 | 383 t | Unknown, Tractive Effort: 199,560 lb simple; 166,600 lb compound | Rebuilt into separate locomotives |
| Challenger | Union Pacific | 3985 | ALCOhale | 1936 – 1943 | Steam | 4-6-6-4 | 485 t | 6,200 horsepower (4,623 kW) | Operates in excursion service; largest operational steam locomotive as of 2007 |
| GTEL 8500 'Big Blow' | Union Pacific | 1-30 (control cab), 1B-30B (turbine unit) | General Electric | 1958 – 1961 | Gas turbine-electric | C-C+C-C | 8,469 horsepower (6,315 kW) | Two preserved in museums | |
| EMD DDA40X | Union Pacific | 6936 | Electro-Motive Division of General Motors | 1969 – 1971 | Diesel-electric | D-D | 244 t | 6,600 horsepower (4,922 kW) | One operational, several in museums; largest operational single-unit diesel locomotive and the most powerful |
| SJ Dm3 | Malmbanan | ASEA | 1953 – 1971 | Electric | 1'D+D+D1' | 273 t | 9,655 horsepower (7,200 kW) | Highest continuous tractive effort in the world when built, most powerful locomotive using jackshafts | |
| DB Class 103 | 1970 – 1973 | Electric | Co'Co' | 114 t | 9,977 horsepower (7,440 kW) | ||||
| SBB-CFF-FFS Re 620 | Gotthardbahn | BBC | 1972 – 1980 | Electric | Bo'Bo'Bo' | 120 t | 10,527 horsepower (7,850 kW) | Most powerful undividable locomotive in series production when built | |
| JR Freight Class EF200 | JR Freight | Hitachi Ltd. | 1990 – | Electric | Bo'Bo'Bo' | 100.8 t | 8,046 horsepower (6,000 kW) | Most powerful undividable narrow-gauge locomotive in series production | |
| EMD SD90MAC | Union Pacific | 8500-8561 | Electro-Motive Diesel | 1996 – 2002 | Diesel-Electric | C-C | 210 t | 6,300 horsepower (4,698 kW) | Retired from service, some on lease with EMLX |
| GE AC6000CW | Union Pacific; CSX Transportation; BHP Billiton | 7500-7579 (being overhauled and renumbered to 69xx); 600-699, 5000-5016; 6070-6077 | General Electric | 1996 – 2001 | Diesel-Electric | Co'Co' | 210 t | 6,250 horsepower (4,661 kW) | Actual HP output is 4350; due to problems with engine. |
| Indian locomotive class WAG-9 | Indian Railways | Chittaranjan Locomotive Works India | 1998 | Electric | Co'Co' | 123 t | 6,350 horsepower (4,735 kW) | Most powerful electric locomotive in India as of 2010. | |
| China Railways HXN3 | China Railways | HXN30001-HXN30300 | Dalian Locomotive, EMD | 2008 – | Diesel-Electric | Co'Co' | 150 t | 6,300 horsepower (4,698 kW) | Most powerful Diesel-Electric locomotive in active production. |
| China Railways HXN5 | China Railways | HXN50001-HXN50300 | GE, CSR Qishuyan Locomotive | 2008 – | Diesel-Electric | Co'Co' | 150 t | 6,250 horsepower (4,661 kW) | Most powerful Diesel-Electric locomotive in active production. |
| China Railways HXD1 | China Railways | HXD10001-HXD10220 | CSR Zhuzhou Electric Locomotive, Siemens | 2006 – 2008 | Electric | Bo'Bo'+Bo'Bo' | 200 t | 12,874 horsepower (9,600 kW) | |
| China Railways HXD2 | China Railways | HXD20001-HXD20180 | Datong Electric Locomotive, Alstom | 2006 – 2008 | Electric | Bo'Bo'+Bo'Bo' | 200 t | 13,410 horsepower (10,000 kW) | |
| China Railways HXD3 | China Railways | HXD30001-HXD30890, HXD38001-38150 | Toshiba, Dalian Locomotive | 2006 – 2009 | Electric | Co'Co' | 150 t | 9,655 horsepower (7,200 kW) | |
| China Railways HXD1B | China Railways | HXD1B0001-HXD1B0500 | CSR Zhuzhou Electric Locomotive, Siemens | 2009 – | Electric | Co'Co' | 150 t | 12,874 horsepower (9,600 kW) | Most powerful undividable locomotive in series production |
| China Railways HXD2B | China Railways | HXD2B0001-HXD2B0500 | Datong Electric Locomotive, Alstom | 2009 – | Electric | Co'Co' | 150 t | 12,874 horsepower (9,600 kW) | Most powerful undividable locomotive in series production |
| China Railways HXD3B | China Railways | HXD3B0001-HXD3B0500 | Dalian, Bombardier | 2009 – | Electric | Co'Co' | 150 t | 12,874 horsepower (9,600 kW) | Most powerful undividable locomotive in series production |
| China Railways HXD1C | China Railways | HXD1C0001-HXD1C0990 | CSR Zhuzhou Electric Locomotive, Siemens | 2009 – | Electric | Co'Co' | 150 t | 9,655 horsepower (7,200 kW) | |
| China Railways HXD2C | China Railways | HXD2C0001- | Datong Electric Locomotive, Alstom | 2010 – | Electric | Co'Co' | 150 t | 9,655 horsepower (7,200 kW) | |
| China Railways HXD3C | China Railways | HXD3C0001- | Dalian, Bombardier | 2010 – | Electric | Co'Co' | 150 t | 9,655 horsepower (7,200 kW) | |
| IORE | Malmbanan | IORE 101- IORE 126 | Bombardier | 2000 – 2004 | Electric | Co'Co'+Co'Co' | 360 t | 14,483 horsepower (10,800 kW) for a pair, possible to operate halves which is not usually done |
Highest continuous tractive effort in the world |
[edit] See also
[edit] References
- Diebert, Timothy S. and Strapac, Joseph A. (1987). Southern Pacific Company Steam Locomotive Conpendium. Shade Tree Books. ISBN 0-930742-12-5.
