EMD SW900 Diesel-Electric Locomotive
The EMD SW900 is a diesel switcher locomotive built by General Motors Electro-Motive Division and General Motors Diesel (GMD) between December 1953 and March 1969. Power was provided by an EMD 567C 8-cylinder engine that generated 900 horsepower (670 kW). Built concurrently with SW1200, the eight-cylinder units had a single exhaust stack. The last two SW900s built by GMD for British Columbia Hydro were built with 8 cylinder 645E engines rated at 1,000 horsepower (750 kW).

260 examples of this locomotive model were built for American railroads and 97 were built for Canadian railroads. Canadian production of the SW900 lasted three and a half years past EMD production. Seven units were exported to Orinoco Mining Co (Venezuela); two units were exported to Southern Peru Copper Co; and five units were exported to the Liberian-American Mining Co. Total production is 371 units.

Some SW900s were built with the generators from traded in EMC Winton-engined switchers and were classified as SW900M by EMD. Units rebuilt from SW or SC model locomotives developed 600 or 660 horsepower with the older generators instead of the full 900 horsepower of the SW900.

In the early 1960s, the Reading Company sent 14 of their Baldwin VO 1000 model switchers to EMD to have them rebuilt to SW900 specifications. The Reading units retained the Baldwin switcher carbody and were rated at 1000 horsepower by EMD.

A Cow-calf variation, the TR9, was cataloged, but none were built.

Original Buyers
Built by Electro-Motive Division, USA
Owner: Electro-Motive Division (demonstrators)
Quantity: 1
Road numbers: 6534
to River Terminal 99
Quantity: 1
Road numbers: 6535
Notes: to Waterloo Railway 4

Owner: Alabama By-Products Corporation
Quantity: 1
Road numbers: 900

Owner: American Steel and Wire
Quantity: 4
Road numbers: 3–6

Owner: Armco Steel Corporation
Quantity: 13
Road numbers: B80, 1203–1214

Owner: Atchison, Topeka and Santa Fe Railway
Quantity: 4
Road numbers: 650–653

Owner: Baltimore and Ohio Railroad
Quantity: 29
Road numbers: 625–653

Owner: Birmingham Southern Railroad
Quantity: 5
Road numbers: 91–95

Owner: General Motors-Buick Motor Division
Quantity: 2
Road numbers: 792, 818

Owner: Canton Railroad
Quantity: 5
Road numbers: 44–48

Owner: Cedar Rapids and Iowa City Railway
Quantity: 1
Road numbers: 94

Owner: Champion Papers Inc
Quantity: 1
Road numbers: 3

Owner: Chicago and North Western Railway
Quantity: 2
Road numbers: 144–145

Owner: Chicago Great Western Railway
Quantity: 1
Road numbers: 5

Owner: Chicago, Rock Island and Pacific Railroad
Quantity: 29
Road numbers: 550–563, 900–914
Notes: 550-563 are 600 h.p. SW900M

Owner: Colorado and Wyoming Railway
Quantity: 1
Road numbers: 214

Owner: Texas Construction Material Company (Colorado River and Western Railroad)
Quantity: 1
Road numbers: 201

Owner: Corinth and Counce Railroad
Quantity: 2
Road numbers: 901–902

Owner: Cuyahoga Valley Railway
Quantity: 2
Road numbers: 960–961

Owner: DeQueen and Eastern Railroad
Quantity: 1
Road numbers: D-4

Owner: Detroit Edison Company
Quantity: 1
Road numbers: 214

Owner: Hammond Lumber Company (Feather River Railway)
Quantity: 1
Road numbers: 102

Owner: Fernwood, Columbia and Gulf Railroad
Quantity: 1
Road numbers: 900

Owner: Grand Trunk Railroad (of Maine)
Quantity: 2
Road numbers: 7225-7226

Owner: Grand Trunk Western Railroad
Quantity: 13
Road numbers: 7227–7232, 7262–7268

Owner: Granite City Steel Company
Quantity: 2
Road numbers: 900–901

Owner: Great Lakes Steel Corporation
Quantity: 2
Road numbers: 6-7

Owner: Hanna Furnace Company
Quantity: 1
Road numbers: 17

Owner: Hercules Powder Company
Quantity: 1
Road numbers: 61

Owner: Inland Lime and Stone Company
Quantity: 1

Owner: Jacksonville Terminal Company
Quantity: 3
Road numbers: 37–39

Owner: Lancaster and Chester Railway
Quantity: 2
Road numbers: 90–91
Notes: L&C 91 was the last EMD built SW900 in 11/65.

Owner: Lehigh Valley Railroad
Quantity: 12
Road numbers: 106-107, 110, 120-127, 130
Notes: 107,110 are 600 h.p. SW900M, 106 is 660 h.p. SW900M.

Owner: Liberian-American Mining Co.
Quantity: 5
Road numbers: 201-205
Notes: Liberia, Africa.

Owner: McLouth Steel Corporation
Quantity: 2
Road numbers: 6–7

Owner: Missouri Portland Cement Company
Quantity: 1
Road numbers: 1

Owner: Monessen Southwestern Railway
Quantity: 3
Road numbers: 28–30

Owner: New York Central Railroad
Quantity: 16
Road numbers: 9631–9646

Owner: New York Central System (Cleveland Union Terminal Company)
Quantity: 3
Road numbers: 9628–9630

Owner: Northern Pacific Railway
Quantity: 1
Road numbers: 100
Notes: NW 100 was rebuilt as an SW900m.

Owner: Orinoco Mining Company
Quantity: 7
Road numbers: 1090–1096
Notes: Venezuela, South America.

Owner: Philadelphia Bethlehem and New England Railroad
Quantity: 2
Road numbers: 51-52

Owner: Pickering Lumber Company
Quantity: 4
Road numbers: 101–104

Owner: Raritan River Railroad
Quantity: 6
Road numbers: 1–6

Owner: Reading Company
Quantity: 21
Road numbers: 10-15, 1501–1515
Notes: 10-15 are 660 h.p. SW900M.

Owner: Republic Steel Corporation
Quantity: 12
Road numbers: 345, 347–349, 354–359, 373–374

Owner: River Terminal Railway
Quantity: 10
Road numbers: 90–98, 100
Notes: 99 was an EMD demonstrator unit.

Owner: Sand Springs Railway
Quantity: 3
Road numbers: 100–102

Owner: Simpson Logging Company
Quantity: 1
Road numbers: 900
Notes: Built with dynamic brakes.

Owner: South Peru Copper Company
Quantity: 2
Road numbers: 9-10

Notes: Peru, South America.

Owner: Southern Pacific Transportation Company
Quantity: 10
Road numbers: 4624–4633

Owner: Steelton and Highspire Railroad
Quantity: 2
Road numbers: 21, 27

Owner: U.S. Steel Corporation
Quantity: 1
Road numbers: 157

Owner: U.S. Sugar Corporation
Quantity: 3
Road numbers: 154–156

Owner: Valdosta Southern Railroad
Quantity: 1
Road numbers: 955

Owner: Virginia-Carolina Chemical Company
Quantity: 1
Road numbers: 1

Owner: Waterloo Railroad
Quantity: 3
Road numbers: 1–3, 4
Notes: Waterloo No. 4 was EMD demonstrator No. 6535.

Owner: Woodward Iron Company
Quantity: 1
Road numbers: 62

Owner: Youngstown Sheet and Tube Company
Quantity: 5
Road numbers: 900–904

Total Units: 274

Built by General Motors Diesel, Canada
Owner: Algoma Steel
Quantity: 1
Road numbers: 51

Owner: Aluminum Company of Canada ("Alcan")
Quantity: 1
Road numbers: 1003

Owner: British Columbia Electric Railway / BC Hydro
Quantity: 12
Road numbers: 900–911
Notes: to Southern Railway of British Columbia BC Hydro 911 was the last SW900 built in 3/69, all twelve built with road trucks and M.U. and sometimes referred to as SW900RS.

Owner: Canadian National Railways
Quantity: 54
Road numbers: 7233–7261, 8535–8559
Notes: CN group 8535-8542 production started 12/53 first built.

Owner: Canadian Pacific Railway
Quantity: 11
Road numbers: 6710–6720

Owner: McKinnon Industries
Quantity: 1
Road numbers: 47074

Owner: Midland Railway Company of Manitoba
Quantity: 1
Road numbers: 1

Owner: Steel Company of Canada ("Stelco")
Quantity: 16
Road numbers: 78–93

Total Units: 97

EMD SW900 Overview
Type and origin
Power type: Diesel-electric
Builders: General Motors’ Electro-Motive Division (EMD); General Motors Diesel (GMD), Canada
Model: SW900
Build date: December 1953 – March 1969
Total produced EMD: 274

Total produced GMD: 97
Prime mover: EMD 567C
Engine type: Two-stroke diesel
Aspiration: Roots-type supercharger
Cylinders: 8
Performance figures
Power output: 900 hp (670 kW)
Locale: North America, South America, Africa

See also:

Electro Motive Diesel

General Motors Diesel (Canada)

EMD Diesel-Electric Locomotives

GMD Diesel-Electric Locomotives

Diesel-Electric Locomotives


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A pair of Southern Railway of British Columbia SW900s.

By {{subst:usernamexpand|Meggar}} - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=33816057