An EMD SW1200 is a 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 1,200 hp (895 kW). Late SW1200s built in 1966 were built with the 567E 12-cylinder engine. Additional SW1200 production was completed by General Motors Diesel in Ontario, Canada, between September 1955 and June 1964.
BN 251, an EMD SW1200, works the yard in Eola, Illinois (just east of Aurora).
737 examples of this locomotive model were built for U.S. railroads, 287 were built for Canadian railroads 4 were built for Brazilian railroads, 25 were built for a Chilean industrial firm, and 3 were built for the Panama Canal Railway.
A cow-calf variation, the TR12, was cataloged, but none were built.
A few units were built with dynamic brakes, featuring a large square box with a fan on top of the hood, right in front of the cab.
An SW1200RS is a variation of the standard SW1200 that features large front and rear (on some units) numberboard housings, EMD Flexicoil B-B trucks, and larger fuel tanks for roadswitcher service. The majority of the Canadian National and Canadian Pacific SW1200 fleets were purchased as SW1200RS units. The Sandersville Railroad Company EMD SW1200 road number SAN 1200, formerly SAN 200, was originally built with the V-12 EMD 567C prime mover, but it was replaced with a V-12 EMD 645 prime mover. The two both produce 1,200 horsepower (890 kW), even though the same motor in the EMD SW1500 produces 1,500 horsepower (1,100 kW). The SAN 1200 also has EMD Flexcoil trucks instead of the standard switcher trucks found on other EMD SW1200s.
Units built by Electro-Motive Division, USA
|Aliquippa and Southern Railroad|
|Ashley, Drew and Northern Railway|
|Atchison, Topeka and Santa Fe Railway|
|Baltimore and Ohio Railroad|
|Bauxite and Northern Railway|
|Bellefonte Central Railroad|
|Belt Railway of Chicago|
|Birmingham Southern Railroad|
|Chicago and Illinois Midland Railroad|
|Chicago and North Western Railway||Acquired by EJ&E Railway then to Gary Railway Co. (315 and 316 not part of GRW fleet)|
|Chicago, Burlington and Quincy Railroad||to Burlington Northern 229-250|
|Chicago, Milwaukee, St. Paul and Pacific Railroad ("Milwaukee Road")||Renumbered 600–619, 625–652 (not in order)|
|Chicago, Rock Island and Pacific Railroad|
|Chile Exploration Company||Chile|
|Colorado and Southern Railway||to Burlington Northern Same|
|Conemaugh and Black Lick Railroad|
|Coos Bay Lumber Company||Built with dynamic brakes.|
|Cuyahoga Valley Railway|
|Delaware, Lackawanna and Western Railroad||to Erie Lackawanna 456–463|
|Denver and Rio Grande Western Railroad|
|De Queen and Eastern Railroad|
|Elgin, Joliet and Eastern Railway||300,301,303,304,305 and 307 are now part of the Gary Railway Co. fleet per the 2009 CN acquisition of EJ&E Railway. 306 to LTEX 306|
|Florida East Coast Railway|
|Fort Worth and Denver Railway||to Burlington Northern Same|
|Grand Trunk Western Railroad|
|Great Lakes Steel|
|Great Northern Railway||to Burlington Northern 162-166|
|Houston Belt and Terminal Railway|
|Illinois Terminal Railroad|
|Inland Steel Company|
|Kansas City Terminal Railway|
|Lake Superior Terminal and Transfer|
|Louisville and Nashville Railroad|
|Midland Electric Coal Company|
|Minneapolis, Northfield and Southern Railway||to Soo Line|
|Minneapolis, St. Paul and Sault Ste. Marie Railroad, ("Soo Line")||321, 323 and 324 were acquired by EJ&E Ry then part of Gary Ry Co.|
|Soo Line (Wisconsin Central Railroad)|
|Missouri Pacific Railroad||Withdrawn in 1985 after the UP takeover. Sold to various owners or scrapped.|
|Missouri Pacific (Texas and Pacific Railway)|
|New York, New Haven and Hartford Railroad||to Penn Central 9180-9199 and then Conrail 9363-9382|
|New Orleans Public Belt Railroad|
|Norfolk and Portsmouth Belt Line Railroad|
|Northern Pacific Railway||to Burlington Northern 170-228|
|Oliver Iron Mining Company|
|Pacific Power and Light|
|Panama Canal Railway|
|Patapsco and Back Rivers Railroad|
|Peoria and Pekin Union Railway|
|Philadelphia, Bethlehem and New England Railroad|
|Point Comfort and Northern Railway|
|Republic Steel Corporation|
|Reserve Mining Company|
|Richmond, Fredericksburg and Potomac Railroad|
|River Terminal Railway|
|Rockdale, Sandow and Southern Railroad|
|Sandersville Railroad||renumbered 1200, upgraded to 12-645 spec|
|Simpson Logging Company||Built with Dynamic Brakes.|
|Southern Pacific Transportation Company||renumbered 2262-2288|
|Southern Pacific (Texas and New Orleans Railroad)||renumbered 2213–2223|
|St. Louis Southwestern Railway ("Cotton Belt")||1062-1073 renumbered to 2250-2261|
|Steelton and Highspire Railroad|
|Terminal Railroad Association of St. Louis|
|Tooele Valley Railway|
|West Virginia Northern Railroad||Built with dynamic brakes.|
|Weyerhaeuser Timber Company|
|Woodward Iron Company|
Units built by General Motors Diesel, Canada
|Canadian Forest Products||Flexicoil trucks, built with dynamic brakes|
|Canadian National Railway||12/13/1500's have Flexicoil trucks and numberboards at both ends.|
|Canadian Pacific Railway||Flexicoil trucks, numberboards at front only|
|Dominion Foundries and Steel ("Dofasco")|
|Essex Terminal Railway|
|Quebec Iron and Titanium||Romaine River Ry|
|Roberval and Saguenay Railway|
Surviving and preserved units
Grand Trunk Western 1512 is now owned by the West Michigan Railroad and is currently in use as a short-line freight hauler.
Fremont and Elkhorn Valley Railroad 1219 built in March 1962 for Chicago & North Western is utilized for their excursion trains as well as the Fremont Dinner Train and currently pulls 1920s-era passenger cars for their non-profit excursion operations and the for-profit dinner train cars.
Coos Bay Lumber Company 1203 is now being operated by Coos Bay Rail Link as a road switcher and can be seen anywhere from Eugene to Coos Bay, Oregon, wearing road number 1203.
Quincy Railroad (California), owned by Sierra Pacific Industries at their mill in Quincy, California, has QRR SW1200 No. 5, builder No. 28344, built June 1963. Lineage is ex-Amador Central No. 11, former Ashley Drew & Northern No. 1208, née-ADN No. 178
Former B&O 9614 was acquired many years ago by the Potomac Electric Power Company for use at its power generating station in Alexandria, Virginia, which later became the property of Mirant, then GenOn Energy. Over the years the surrounding area changed from industrial use to residential and, after much community action, the plant closed on October 1, 2012. As of August 2013 the locomotive was still on site at the dormant plant but has since been transferred to the power generating station near Morgantown, Maryland.
Former Texas and New Orleans 113 is now working for Key Cooperative in Newton, Iowa, at its grain facility.
Englewood Railway on Vancouver Island, British Columbia, operates four SW1200, three of which have been rebuilt with 1,500-horsepower (1,100 kW) Caterpillar engines, the fourth retaining its original power plant. The locomotives also have larger fuel tanks, dynamic brakes, and operate as "road" locomotives hauling lumber. Three of these locomotives were originally owned by Canadian Forest Products (units 301 to 303), and one from COOS (Englewood Unit 304).
Commonwealth Edison unit 16 and Terminal Railroad Association of St. Loius unit 1231 are now being operated by Steel Dynamics Inc. Pittsboro, IN. Both locomotives are used as scrap yard switchers at the Pittsboro facility.
Sandersville Railroad SAN 200 purchased in 1964 is still used in daily switching service with the Sandersville Railroad as of 2017 but has been re-stenciled as the SAN 1200. Its original 567C engine was upgraded to 645 specs at some point in its history.
Northern Pacific Railway 146, after being inherited by successor railroads Burlington Northern Railroad and BNSF Railway, was sold to Evraz North America and renumbered 3540. In November 2015, it was acquired by the Virginia and Truckee Railroad in Virginia City, Nevada, and renumbered D-4 to fit the railroad's diesel numbering series. It is in operable condition.
|Wikimedia Commons has media related to EMD SW1200 locomotives.|
- Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-026-7.
- Kristopans, Andre J. (September 10, 2014). "EMC/EMD 201A and 567 Switchers". Utah Rails.
- Kristopans, Andre J. (October 2, 2014). "General Motors Diesel". Utah Rails.
- Kristopans, Andre J. (September 22, 2015). "GM Export Models". Utah Rails.