An EMD SW1200 is a four-axle diesel switcher locomotive built by General Motors Electro-Motive Division between January 1954 and May 1966. Power is provided by an EMD 567C 12-cylinder engine, which generates . Additional SW1200 production was completed by General Motors Diesel in Ontario, Canada, between September 1955 and June 1964.
737 examples of this locomotive model were built for U.S. railroads, 287 were built for Canadian railroads, but none were built.
An SW1200RS (RS for road switcher) is a variation of the standard SW1200 that features large front and rear (on some units) number board housings, EMD Flexicoil B-B trucks, and larger fuel tanks for road switcher service. The majority of the Canadian National and Canadian Pacific SW1200 fleets were purchased as SW1200RS units. SW1200RS units were produced near the end of SW1200 production in the mid-1960s.
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|De Queen and Eastern Railroad ||1 ||D-5 ||
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|Elgin, Joliet and Eastern Railway ||8 ||300–307 ||300–301, 303–305 and 307 are now part of the Gary Railway Co. fleet per the 2009 CN acquisition of EJ&E Railway. 306 to LTEX 306
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|Florida East Coast Railway ||7 ||229–235 ||
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|Fort Worth and Denver Railway ||4 ||607–610 || to Burlington Northern Same
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|Grand Trunk Western Railroad ||18 ||1269–1270, 1505–1508, 1511–1519, 7017–7019 ||
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|Great Lakes Steel Corporation||16 ||16, 39–53 ||
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|Great Northern Railway ||6 ||29–33, 100 || 100 Rebuilt from EMC NC to Burlington Northern 162–166
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|Houston Belt and Terminal Railway ||5 ||33–37 ||
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|Illinois Terminal Railroad ||12 ||775–786 ||
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|Inland Steel Company ||23 ||88–98, 103–114 ||
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|Kansas City Terminal Railway ||10 ||70–79 ||
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|Lake Superior Terminal and Transfer ||1 ||105 ||
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|Louisville and Nashville Railroad ||4 ||2297–2300 ||
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|Midland Electric Coal Company ||1 ||1201 ||
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|Minneapolis, Northfield and Southern Railway ||6 ||30–35 || to Soo Line
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|Minneapolis, St. Paul and Sault Ste. Marie Railroad, ("Soo Line") ||8 ||321–328 ||321, 323 and 324 were acquired by EJ&E Ry then part of Gary Ry Co. One unit acquired by Tulsa-Sapulpa Union Railway, now in active service as its Number 108.
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|Soo Line (Wisconsin Central Railroad) ||8 ||2120–2127 ||
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|Missouri Pacific Railroad ||116 ||1100–1166, 1175–1201, 1255–1259, 1263–1279|| rowspan="2" |Withdrawn in 1985 after the UP takeover. Sold to various owners or scrapped.
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|Missouri Pacific (Texas and Pacific Railway) ||20 ||1280–1299
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|Missouri–Kansas–Texas Railroad ||8 ||1–6, 43–44 ||
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|New York, New Haven and Hartford Railroad ||20 ||640–659 || to Penn Central 9180–9199 and then Conrail 9363–9382
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|New Orleans Public Belt Railroad ||2 ||71–72 ||
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|Norfolk and Portsmouth Belt Line Railroad ||15 ||101–115 ||
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|Northern Pacific Railway ||59 ||119–177 || to Burlington Northern 170–228
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|Oliver Iron Mining Company ||9 ||940–948 ||
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|Pacific Power and Light ||1 ||10 ||
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|Panama Canal Railway ||3 ||661–663 ||
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|Patapsco and Back Rivers Railroad ||10 ||125–134 ||
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|Pennsylvania Railroad ||35 ||7900–7934 || To Penn Central
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|Peoria and Pekin Union Railway ||1 ||500 ||
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|Philadelphia, Bethlehem and New England Railroad ||5 ||39–43 ||
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|Reading Company ||5 ||2715–2719 || Equipped with 930 Gal. Fuel tanks
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|Republic Steel Corporation ||2 ||362, 895 ||
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|Reserve Mining Company ||1 ||1212 ||
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|Richmond, Fredericksburg and Potomac Railroad ||5 ||81–85 ||
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|River Terminal Railway ||2 ||63–64 ||
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|Rockdale, Sandow and Southern Railroad ||2 ||8–9 ||
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|Sandersville Railroad ||1 ||200 || renumbered 1200, upgraded to 12–645 spec
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|Simpson Logging Company ||2 ||1200–1201 || Built with Dynamic Brakes.
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|Southern Pacific Transportation Company ||27 ||1597–1623 || renumbered 2262–2288
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|Southern Pacific (Texas and New Orleans Railroad) ||12 ||113–118, 123–128 || renumbered 2213–2223
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|St. Louis Southwestern Railway ("Cotton Belt") ||17 ||1062–1073, 2289–2293 || 1062–1073 renumbered to 2250–2261
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|Steelton and Highspire Railroad ||1 ||44 ||
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|Terminal Railroad Association of St. Louis ||25 ||1219–1243 ||
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|Tooele Valley Railway ||1 ||100 ||
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|U.S. Steel ||2 ||SX1–SX2 ||
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|Wabash Railroad ||5 ||375–379 ||
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|West Virginia Northern Railroad ||1 ||52 || Built with dynamic brakes.
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|Weyerhaeuser Timber Company ||1 ||304 ||
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|Wheeling Steel ||7 ||1250, 1254–1259 ||
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|Woodward Iron Company ||1 ||52 ||
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!Total !! 765 !! !!
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Units built by General Motors Diesel, Canada
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!Railroad !! Quantity !! Road numbers !! Notes
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|Canadian Forest Products ||3 ||301–303 || Flexicoil trucks, built with dynamic brakes
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|Canadian National Railway ||208 ||1227–1268, 1271–1397, 1575–1597, 7020–7035 || 12/13/1500s have Flexicoil trucks and numberboards at both ends. Some units rebuilt to SW1200RMs
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|Canadian Pacific Railway ||72 ||8100–8171 || Flexicoil trucks, numberboards at front only
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|Dominion Foundries and Steel ("Dofasco") ||1 ||14 ||
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|Essex Terminal Railway ||1 ||105 ||
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|Quebec Iron and Titanium ||1 ||5 || Romaine River Ry
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|Roberval and Saguenay Railway ||1 ||23 ||
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!Total !! 287 !! !!
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See also
- EMD LWT12
- List of GMD Locomotives
- List of GM-EMD locomotives