EMD SD60

The EMD SD60 is a 3,800 horsepower (2,800 kW), 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division, intended for heavy-duty drag freight or medium-speed freight service. It was introduced in 1984, and production ran until 1995.

EMD SD60
Ex-SOO SD60 no. 6014, now owned by Cit (CEFX), at Lincoln, Nebraska in October 2014.
Type and origin
Power typeDiesel-electric
BuilderGM Electro-Motive Division (EMD)
General Motors Diesel (GMD)
Build date1984–1995
Total produced1,144
Specifications
Configuration:
​
 • AARC-C
Gauge4 ft 8 1⁄2 in (1,435 mm) standard gauge
5 ft 3 in (1,600 mm), Brazil
Wheel diameter40 in (1,000 mm)
Wheelbase13 ft 7 in (4.14 m)
Length71 ft 2 in (21.69 m)
Width10 ft 3 in (3.12 m)
Height15 ft 7.5 in (4.76 m)
Loco weight368,000 lb (166,922 kg)
Prime moverEMD 16-710G3A
Engine typeV16 diesel
AlternatorAR-11
Traction motorsD-87
Cylinders16
Performance figures
Maximum speed70 mph (113 km/h)
Power output3,800 hp (2.8 MW) at 900 rpm
Tractive effortStarting: 98,250 lbf (44,570 kgf) @ 25%
Continuous: 100,000 lbf (45,359 kgf) @9.8 mph (15.8 km/h)
Career
OperatorsSee original owners
LocaleNorth America, Brazil
Dispositionmost still in service as of 2016

History and development

The SD60 is essentially identical to SD50 externally, but has a different prime mover and a computer controlled electrical system. Brian Solomon posited SD60 was a "much better machine". The SD60 featured the new 16-cylinder EMD 710G3A prime mover[1]. Chicago and North Western Transportation Company's railroad manual estimated SD60 is 3% more fuel efficient than SD50, however a pair of SD60s was up to 16% more efficient than three SD40s pulling a standard coal train[1]

Norfolk Southern has been modernizing their old SD60s since 2010 into SD60E, a model specific to them.[2]

Models
EMD SD60I, CSX 8747, Plymouth, Michigan
EMD SD60M (Early model), UP 2317 ("Triclops")
GMD SD60F, CN 5536

Several variants of the SD60 were built, including:

SD60

This was the original model, and had a conventional hood unit configuration with the 40 Series (spartan) cab first employed on the SD40-2.

SD60F

The SD60F was ordered and was operated by Canadian National and has a full-width cowl body and crashworthy "safety cab" with a four-piece windshield. CN retired the SD60F in 2017, however a handful were sold off and are still working on a shortline in Minnesota.

SD60I

The SD60I model has a full-width short hood and features the so-called "WhisperCab" that was insulated from sound and vibration using a 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 all now belong to the Norfolk Southern Railway and CSX Transportation.

SD60M

The SD60M features a "North American safety cab" design and has a full-width short hood. Early models until 1990 featured a three-piece windshield with vertical windows (nicknamed "triclops"), identical to the windshields found on EMD's SD40-2F and F59PH models. Later production from 1991 used two windshield panes that were sloped back, and had a somewhat shorter nose tapered on the sides. Purchasers of this model included Conrail, Union Pacific Railroad, Burlington Northern Railroad and the Soo Line Railroad.

SD60MAC

The SD60MAC is similar to the SD60M but is equipped with alternating current traction motors. Although four demonstrator SD60MAC units tested on the Burlington Northern Railroad proved the viability of EMD's AC traction system, all subsequent orders were for the SD70MAC locomotive.

SD60E

The SD60E is a custom rebuild of standard cab SD60 for Norfolk Southern created at the Juniata Shops with the prototype being delivered in 2010 and the majority of the production taking place between 2013 and 2017. The SD60E utilizes a new NS-designed wide nose cab with increased crash protection, new electronics and up-rating the engine to the 4000hp 710G3B standard. Norfolk Southern bought additional SD60s from Helm Leasing specifically for the SD60E program with the aim to eventually rebuild 240 SD60Es, however the project was terminated after 135 had been completed and Norfolk Southern's remaining inventory of unrebuilt SD60, SD60M and SD60I locomotives were subsequently sold or scrapped in 2019.[3]

Current and original owners
Railroad Qty. Road numbers
EMD SD60
Burlington Northern 3 8300-8302
Chicago & North Western 55 8001-8055
Conrail 25 6843-6867
CSX Transportation 23 8700-8721-8790
EMDX 4 1-4
Kansas City Southern 46 714-759
Norfolk Southern 151 6550-6700
Oakway 100 9000-9099
Soo Line 58 6000-6057
Union Pacific 85 6000-6084
Canadian National 90 5400-5489
EMD SD60F
Canadian National 64 5500-5563
EMD SD60I
Conrail 80 5575-5654
Norfolk Southern 46 6717-6762
CSX Transportation 35 8722-8774
Terminal Railroad Association of St. Louis 2 4001-4002
Buffalo and Pittsburgh Railroad 6 3880-3885
EMD SD60M
Burlington Northern 100 1991, 9200-9298
Conrail 75 5500-5574
Soo Line 5 6058-6062
Union Pacific 281 6085-6365
Norfolk Southern 44 6763-6806

6807-6815

CSX Transportation 30 8756-8786
Buffalo and Pittsburgh Railroad 5 3886-3890
Carajás Railroad (Vale) 2 601-602
Yadkin Valley Railroad 6 8769, 8771-8772, 8781, 8783, 8786
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gollark: I think the APIs are pretty much the same.
gollark: You tell it how much stack space it can use, and if it goes above that it uses the heap.
gollark: `smallvec` can put it on either though.
gollark: Suuuuuure.

See also

References
  1. Solomon, Brian. EMD Locomotives. Voyageur Press. pp. 148–151. ISBN 978-1-61060-379-9.
  2. Esposito, Christopher (2018-11-15). Locomotives of the Eastern United States. Amberley Publishing Limited. ISBN 978-1-4456-8303-4.
  3. "NS SD60E Rebuilds". AltoonaWorks.info. Retrieved 2012-09-09.
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