The EMD SW7 was a
diesel
Diesel may refer to:
* Diesel engine, an internal combustion engine where ignition is caused by compression
* Diesel fuel, a liquid fuel used in diesel engines
* Diesel locomotive, a railway locomotive in which the prime mover is a diesel engin ...
switcher
A switcher, shunter, yard pilot, switch engine, yard goat, or shifter is a small railroad locomotive used for manoeuvring railroad cars inside a rail yard in a process known as ''switching'' (US) or ''shunting'' (UK). Switchers are not inten ...
locomotive
A locomotive or engine is a rail transport vehicle that provides the Power (physics), motive power for a train. If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit, Motor coach (rail), motor ...
built 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 October 1949 and January 1951.
It was powered by a
12-567A engine.
The SW7 replaced the earlier 1,000 horsepower NW2 switcher in EMD's catalog.
A total of 489 SW7 locomotives were produced. The majority of the SW7s were built by EMD Plant #3 in Cleveland, Ohio. In addition, 15 TR4
cow-calf
In rail transport, a cow-calf (also cow and calf) locomotive is a set of switcher-type diesel locomotives. The set usually is a pair; some 3-unit sets (with two calves, also known as herds) were built, but this was rare. A cow is equipped with a ...
paired sets were produced.
SW7 production was discontinued in 1951 in favor of the new
SW9.
Original buyers
External links
*
See also
*
List of GM-EMD locomotives
The following is a list of locomotives produced by the Electro-Motive Corporation (EMC), and its successors General Motors Electro-Motive Division (GM-EMD) and Electro-Motive Diesel (EMD).
Streamlined power cars and early experimental locomotive ...
References
* * Kristopans, Andre J. http://utahrails.net/ajkristopans/SWITCHERS201Aand567.php Retrieved October 7, 2014.This is a compilation of EMD Product Reference Data
* General Motors Electro-Motive Division Service Department "Locomotive Reference Data" published January 1, 1959, 286 pages.
B-B locomotives
SW0007
Diesel-electric locomotives of the United States
Railway locomotives introduced in 1949
Locomotives with cabless variants
Standard gauge locomotives of the United States
{{diesel-loco-stub
Shunting locomotives