The EMD GT22CUM1 is a narrow gauge diesel-electric locomotive built by EMD. It has six axles in two trucks, giving it a C-C wheel arrangement. The name means a C-C locomotive, U for metre gauge (the rails are a metre apart), 12-cylinder 645 series. They were built for service in South America by the Villares with license of EMD. The Rede Ferroviaria Federal Sociedade Anonima (RFFSA) a state railroad in Brazil bought about 55 in the early 1980s in order to expand their locomotive roster. The RFFSA needed a powerful single-engined locomotive with light weight per axle for their metric system, and the GT22 represented the highest-rated model that EMD had to offer at the time.

EMD GT22CUM-1
Type and origin
Power typeDiesel-electric
BuilderGeneral Motors Electro-Motive Division
Specifications
Configuration:
 • AARC-C
 • UICCo'Co'
Gauge1,000 mm (3 ft 3+38 in)
Loco weight108 metric tons
Cylinders12
Performance figures
Maximum speed100 km/h (60 mph)
Power output2,250 hp
Career
LocaleSouth America

The model name "GT22CUM1" deconstructs as follows:

  • G - general Use
  • T - turbo charged
  • 22 - 12-cylinder 645E diesel engine
  • C - C-C wheel arrangement
  • U - metrical gauge
  • M1 - model 1

See also

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