This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed.(August 2021) (Learn how and when to remove this message)
EMD SD90MAC and SD9043MAC
UP 8540, an SD90MAC Phase II
Type and origin
Power type
Diesel-electric
Builder
Electro-Motive Diesel (EMD)
Model
SD90MAC
Build date
1995–2005
Total produced
478
Specifications
Configuration:
• AAR
C-C
• UIC
Co’Co’
Gauge
4 ft 8+1⁄2 in (1,435 mm)
Wheel diameter
45 in (1,100 mm)
Length
80 ft 2 in (24.43 m)
Loco weight
415,000 lb (188,000 kg) (SD9043MAC) and 425,000 lb (193,000 kg) (SD90MAC-H & SD90MAC-H2)
Fuel capacity
5,000 US gal (19,000 L; 4,200 imp gal)
Sandbox cap.
40 cu ft (1.1 m3)
Prime mover
EMD 16-710 G3C-T1 and 16-265H
RPM range
225-1,000 rpm
Engine type
V16 diesel
Traction motors
6 Siemens 1TB2830 AC motors
Cylinders
16
Cylinder size
10.45 in × 11.80 in (265 mm × 300 mm)
Performance figures
Maximum speed
70 mph (113 km/h)
Power output
SD9043MAC: 4,300 hp (3,210 kW)
SD90MAC: 6,000 hp (4,470 kW)
Tractive effort
small engine (SD9043MAC) : 185,000 lbf (820 kN) starting, 147,000 lbf (650 kN) continuous large engine (SD90MAC-H and SD90MAC-H2) : 200,000 lbf (890 kN) starting, 165,000 lbf (730 kN) continuous
The EMD SD90MAC is a model of 6,000 hp (4,470 kW)[1] C-C diesel-electric locomotive produced by General Motors Electro-Motive Division (EMD). It is, with the SD80MAC, one of the largest single-engined locomotives produced by EMD, surpassed only by the dual-engined DDA40X.
The SD9043MAC is the 4,300 hp (3,210 kW) variant, using a 16-cylinder 710G engine instead of the H-engine, which was originally intended as a temporary alternative while EMD tried to solve the H-engine's issues. However, the accompanying upgrade program was never utilized by its customers.
The SD90MAC's features include radial steering trucks with AC traction motors and an isolated safety cab which is mounted on shock absorbers to lessen vibrations in the cab. The SD90MAC, like the SD80MAC, SD70ACe, and SD70M-2, has a wide radiator section, nearly the entire width of the locomotive, which along with their size makes them easy to spot.
As of 2019, some SD90MACs are still in service on the Union Pacific. Norfolk Southern had rostered 110 SD90MAC locomotives purchased or traded from Union Pacific or the CIT Group respectively, that have now all been rebuilt as EMD SD70ACU locomotives. Canadian Pacific has also opted to convert their small fleet of long-stored SD90MACs into SD70ACUs as well.
^"Gm Emd: Sd90Mac". www.gmemd.com. Archived from the original on 10 December 2001. Retrieved 12 January 2022.
The EMDSD90MAC is a model of 6,000 hp (4,470 kW) C-C diesel-electric locomotive produced by General Motors Electro-Motive Division (EMD). It is, with...
cylinder, the EMDSD90MAC; however, the early engines were found to be unreliable, and unsuccessful in the market, with the proven EMD 710 2-stroke design...
an SD90MAC (or better known as a SD9043MAC) that has been rebuilt to renew its Mitsubishi electrical components and replace the cab with the new EMD Phase-II...
into the SD90MAC and SD70ACe models. Key spotting differences between the SD80MAC and SD90MAC include no external rear sandbox on the SD90MAC, no rear...
system of rubber gaskets. The same cab was later used on EMD's SD70I, SD75I, SD80MAC and SD90MAC locomotives. Only Conrail ordered this model, and after...
its successors General Motors Electro-Motive Division (GM-EMD) and Electro-Motive Diesel (EMD). EMC participated in the construction of a number of motorized...
6000 hp AC drive GE AC6000CW, and EMD announced the 5,000 hp (3.7 MW) EMD SD80MAC, and later the 6,000 hp (4.5 MW) EMDSD90MAC, both which were AC drive locomotives...
railway in 2018. List of locomotives in China Electro-Motive Diesel EMDSD90MACEMD 265 Electro-Motive Diesel: JT56ACe for China Ministry of Railways Archived...
powerful of them have a brake power of around 4.5 MW or 6,000 HP. The EMDSD90MAC class of locomotives are an example of such. The comparable class GE...
Division. Along with the SD80MAC and SD90MAC, the SD89MAC was one of the largest single-engine locomotives produced by EMD. The SD89MAC featured radial steering...
units), five ALCO RS-2 road switchers, three Alco S-2 switchers and three EMD E8 passenger locomotives. In 1948 Montreal Locomotive Works began production...
manufacturers, Electro-Motive Division of La Grange, Illinois with the SD90MAC, and GE Transportation of Erie, Pennsylvania with the AC6000CW, in the...
of introduction on the Fortescue railway.) GE Dash 9-44CW EMDSD90MAC-H EMD SD9043MAC EMD SD70ACe (In order of introduction on the Goldsworthy railway...
that were converted to SD70ACes. Seven rebuilt Union Pacific Railroad EMDSD90MAC-Hs Phase IIs were in transit from the United States. Port and Rail Infrastructure...
SD70 C-C EMD USA SD70M C-C EMD USA SD70I C-C EMD USA SD70MAC C-C EMD USA SD70ACe C-C EMD USA SD70M-2 C-C EMD USA SD80MAC C-C EMD USA SD90MAC C-C EMD USA...
train. Big hook A railroad crane Big Mac A nickname given to EMD's SD70MAC, SD80MAC, and SD90MAC locomotive models Big Orange A nickname given to BNSF, named...
Global Information
