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The EMD SD75M and EMD SD75I are a series of similar
image:BNSF 8287 EMD SD75I.jpg, BNSF #8287
image:CN5800 Dacotah,MB.png, CN #5800
Locomotive Truck EMD HTCR
{{Santa Fe "Super Fleet" SD75M C-C locomotives Diesel-electric locomotives of the United States Freight locomotives
The EMD SD75M and EMD SD75I are a series of similar diesel-electric locomotive
A diesel locomotive is a type of railway locomotive in which the prime mover (locomotive), prime mover is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is conv ...
s produced by General Motors Electro-Motive Division
Progress Rail Locomotives, doing business as Electro-Motive Diesel (EMD), is an American manufacturer of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. The company is owned by Caterpillar through its su ...
between 1994 and 1996. The series was a response to General Electric
General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable energ ...
's Dash 9-44CW. By increasing the output of the 16-710-G3 engine from , the SD75 was a reality. The "M" in the model designation is the style of the cab, in this case the North American style cab.
The "I" model has an "Isolated Cab", or a "WhisperCab" in EMD speak, which reduces noise and vibration in the cab. This type of cab is recognized by a seam separating the nose and cab components. This seam is the rubber that damps vibration and cuts down on noise, because the cab is not attached directly to the frame on the unit. This was the last model that used the "I" designation in the model name; all further units had the isolated cab, but the model designation continued to use the "M". Buyers included Canadian National
The Canadian National Railway Company (french: Compagnie des chemins de fer nationaux du Canada) is a Canadian Class I railroad, Class I freight railway headquartered in Montreal, Quebec, which serves Canada and the Midwestern United States, M ...
, the largest buyer with 175 units (now 173), Burlington Northern Santa Fe
Burlington Northern Santa Fe, LLC is the parent company of the BNSF Railway (formerly the Burlington Northern and Santa Fe Railway). The company is an indirect, wholly owned subsidiary of
Berkshire Hathaway, which is controlled by investor Warre ...
with 26 (now 24), and Ontario Northland Railway
The Ontario Northland Railway is a Canadian railway operated by the Ontario Northland Transportation Commission, a provincial Crown agency of the government of Ontario.
Originally built to develop the Lake Timiskaming and Lake Nipissing area ...
with 6 (now 5).
Both models use the HTCR radial truck and are mounted on the frame. This M model only sold 76 units and was not as popular as the SD70. The biggest buyer of this model was the Atchison, Topeka and Santa Fe Railway
The Atchison, Topeka and Santa Fe Railway , often referred to as the Santa Fe or AT&SF, was one of the larger railroads in the United States. The railroad was chartered in February 1859 to serve the cities of Atchison, Kansas, Atchison and Top ...
, now Burlington Northern Santa Fe
Burlington Northern Santa Fe, LLC is the parent company of the BNSF Railway (formerly the Burlington Northern and Santa Fe Railway). The company is an indirect, wholly owned subsidiary of
Berkshire Hathaway, which is controlled by investor Warre ...
, with 51 units; an additional 25 were delivered in early 1996, during the merger process. The Santa Fe's SD75Ms were the railroad's last new locomotives, with the last new unit, number 250, built in August 1995.
Mainly built for a special request from Santa Fe/BNSF, the SD75Ms are slightly more powerful than SD70Ms, having horsepower ratings between & 4500 hp. They are almost identical to SD70Ms, but can be distinguished by the added bulge below the inertial air-intake on the right side of the unit.
In September 2014, Norfolk Southern
The Norfolk Southern Railway is a Railroad classes, Class I freight railroad in the United States formed in 1982 with the merger of Norfolk and Western Railway and Southern Railway (U.S.), Southern Railway. With headquarters in Atlanta, the ...
purchased 7 SD75Ms via National Railway Equipment Company
National Railway Equipment Company is an American railroad equipment rebuilding, leasing, and manufacturing company, headquartered in Mt. Vernon, Illinois. NREC sells new and rebuilt locomotives to railroad companies worldwide, with an emphasis ...
.
SD75M operators
SD75I Operators
SD75I gallery
References
External links
Locomotive Truck EMD HTCR
{{Santa Fe "Super Fleet" SD75M C-C locomotives Diesel-electric locomotives of the United States Freight locomotives