EMD GT22 Series

EMD GT22 Series
Ferrosur Roca GENERAL MOTORS-Astarsa GT22CW #9015 by Astarsa transporting empty coal hoppers.
Type and origin
Power typeDiesel–electric
BuilderAstarsa, Đuro Đaković, Equipamentos Villares S.A., Electro-Motive Division, General Motors Diesel & Henschel & Sohn GmbH
ModelGT22CW, GT22CU, GT22CW-2, GT22HW-2, GT22CUM-1, GT22CUM-2, GT22LC & GT22LC-2
Build dateJune 1972 - December 1997
Total produced455
Specifications
Configuration:
 • AARC-C & A1A-A1A (GT22HW-2)
 • UICCo'Co' & (A1A)(A1A) (GT22HW-2)
Gauge5 ft 6 in (1,676 mm)
4 ft 8+12 in (1,435 mm)
3 ft 6 in (1,067 mm)
1,000 mm (3 ft 3+38 in)
Wheel diameter40 inches (1,000 mm)
Wheelbase11 ft 11 in (3.63 m) between bolsters; 6 ½' ft (1.98 m) between axles in each truck
Length57 ft (17,000 mm) over the coupler pulling faces
Width9 ft 3 in (2.82 m) over the grabirons
Height13 ft 2.5 in (4.026 m)
Loco weight107 tons (107,752 kg)
Fuel capacity1,700 - 3,000 US gal (6434 - 11,355 L)
Prime moverEMD 12-645E3
Engine typeV12 - 45 Deg
AspirationTurbocharged - Intercooler
GeneratorAlternator AR10 & D14
Traction motorsEMD D 77 B
Loco brakeWestinghouse - WXOV - 26 LAV
Performance figures
Maximum speed65 - 93 MPH (105 - 150 km/h)
Power output2,475 HP (1845 kW) - 2,250 HP in coupler
Career
Nicknames"Stretch", "Karavela/Mala Karavela" (GT22HW-2)
LocaleAlgeria, Argentina, Brazil, Botswana, DR Congo, Ivory Coast, Mali, Mozambique, Nigeria, Saudi Arabia, Senegal, Yugoslavia & Zimbabwe

The EMD GT22 Series were first introduced in 1972 after the rise in popularity of six axle locomotives. The GT series now carried a turbocharger that increased the horsepower depending on customer input. The GT series also utilized six axle HTC Trucks, which allowed the locomotive to haul heavier loads at slower speeds with minimal wheelslip.

The GT22C series also gave itself various individual designations depending on customer input. Standard suffixes after the model designation were either a U or W suffix to indicate the type of traction motors. A C generally indicated six axle trucks but due to a six axle locomotive being too oversized for most second and third world countries, EMD developed the L suffix to indicate the locomotive was constructed with a Lightweight frame. EMD Dash 2 electronics also became a popular choice for the export railroads by the late 1970s.

These designations could apply to any kind of export locomotive design of EMD or another licensee of EMD as long as the electrical & mechanical gear was left unaltered.