EMD SW7

The EMD SW7 was a diesel switcher locomotive built by General Motors Electro-Motive Division between October 1949 and January 1951. It was powered by a 1,200 horsepower (895 kW)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 paired sets were produced.

EMD SW7
Baltimore and Ohio No. 9624 TR4 cow-calf set at Riverside Yard, Baltimore, in 1969
Type and origin
Power typeDiesel-electric
BuilderGeneral Motors Electro-Motive Division (EMD)
ModelSW7, TR4
Build dateOctober 1949 – January 1951
Total producedSW7: 489
TR4: 15 sets
Specifications
Configuration:
​
 • AARB-B
 • UICBo′Bo′
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Prime moverEMD 12-567BA
Engine typeV12 diesel
AspirationRoots-type supercharger
Cylinders12
Performance figures
Power output1,200 hp (895 kW)

SW7 production was discontinued in 1951 in favor of the new SW9.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.