EMD SD45

EMD SD45
Great Northern 400 in service at the Minnesota Transportation Museum
Type and origin
Power typeDiesel
BuilderGeneral Motors Electro-Motive Division (EMD)
ModelSD45
Build dateDec. 1965 – Dec. 1971
Total produced1,260
Specifications
Configuration:
 • AARC-C
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Length65 feet 8 inches (20.02 m); 65 feet 9+12 inches (20.053 m) on some units starting early 1968.
Loco weight368,000 pounds (167,000 kg)
Prime moverEMD 20-645E3
Engine typeV20 diesel
GeneratorAR10B
Cylinders20
Performance figures
Maximum speed71 miles per hour (114 km/h)
Power output3,600 hp (2,680 kW)
Tractive effortStarting: 92,000 lbf (410 kN)
Continuous: 82,100 lbf (365 kN) @ 11 mph (18 km/h)
[1][2]

The SD45 is a six-axle diesel-electric locomotive class built by General Motors Electro-Motive Division between 1965 and 1971. It has an EMD 645E3 twenty-cylinder engine generating 3,600 hp (2,680 kW) on the same frame as the SD38, SD39, SD40, and SDP40. As of 2023, most SD45s have been retired, scrapped or rebuilt to SD40-2 standards.

  1. ^ Foster 1996, p. 58
  2. ^ Solomon 2014, p. 277