The EMD SD18 is a 6-axle diesel

locomotive A locomotive is a rail transport, rail vehicle that provides the motive power for a train. Traditionally, locomotives pulled trains from the front. However, Push–pull train, push–pull operation has become common, and in the pursuit for ...

built by General Motors Electro-Motive Division between April 1960 and March 1963. Power was provided by an EMD 567D1 16-

cylinder A cylinder () has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. In elementary geometry, it is considered a prism with a circle as its base. A cylinder may also be defined as an infinite ...

engine which generated . 54 examples of this locomotive model were built for

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, p ...

railroads, and 60 for export, including fifteen for

Korail The Korea Railroad Corporation () is the national railway operator in South Korea. It is branded as KORAIL () and changed its official Korean name () in November 2019. Currently, KORAIL is a public corporation, managed by Ministry of Land, ...

(order numbers 700735–700749, serial numbers 28373–28387).

Design and Production

The SD18 was the third model in EMD's SD (special duty) line of locomotives. It was designed as a modified GP18 which had six axles instead of four. The additional axles allowed for more tractive effort and a more even distribution of weight compared to the GP18.

Original Owners

Preservation

At least four SD18s have been preserved. Chop-nosed Duluth, Missabe & Iron Range 193 is now an operating member of the Lake Superior Railroad Museum collection. They also previously had DM&IR 316 in their collection, which is an "SDM"; an EMD SD18 given

EMD 645 The EMD 645 is a family of two-stroke diesel engines that was designed and manufactured by the Electro-Motive Division of General Motors. While the 645 series was intended primarily for locomotive, marine and stationary engine use, one 16-cy ...

power assemblies by the Missabe, though still labeled as an SD18. In 2019 #316 was traded for Northern Pacific #245 and left the museum for the Dakota Quality Grain Corporation in Parshall, N.D. As of March 2022, grain terminal operator AgRail LLC of Bloomington, Illinois has acquired Western Rail Inc. SD18M No. 1229 through a lease-to-purchase agreement. The unit began service with Minnesota's Reserve Mining in May 1961 and was last used by the Western Milling plant in Goshen, CA. It was rewired in the 1980s.

References

External links

* {{Korail rolling stock SD18 C-C locomotives Diesel–electric locomotives of the United States Railway locomotives introduced in 1960 Freight locomotives Standard-gauge locomotives of the United States Standard-gauge locomotives of South Korea Diesel–electric locomotives of South Korea Chesapeake and Ohio locomotives