EMD SD60
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 Soo Line 6022 pulls a train through Wisconsin Dells, WI, 20 June 2004 |
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| Power type | Diesel-electric |
|---|---|
| Builder | General Motors Electro-Motive Division (EMD) |
| Build date | 1984 – 1995 |
| Total production | 1,138 |
| AAR wheel arr. | C-C |
| Gauge | 4 ft 8½ in (1435 mm) |
| Prime mover | EMD 710 |
| Cylinders | V16 |
| Power output | 3,800 hp (2.8 MW) |
| Disposition | most still in service as of 2005 |
The EMD SD60 was a 3,800 horsepower (2.8 MW) 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 of SD60 variants ran until 1995.
Contents |
[edit] History and development
The development of the SD50 and SD60 series in the late 1970s and early 1980s was spurred by the introduction of 3,600 hp (2.7 MW) GE B36-7 and GE C36-7 locomotives by EMD's main competitor General Electric. In 1980, the EMD SD50 series locomotives were introduced, but these were not a success owing to poor engine reliability. EMD therefore quickly commenced development of the SD60 series. Although the carbody and frame are nearly indistinguishable from the SD50, the SD60 featured the new 16 cylinder EMD 710 prime mover. These replaced the overstressed EMD 645 that proved so problematic in the SD50. The SD60 was also fitted out with upgraded traction motors, a new design of trucks, and a microprocessor-based control system. The SD60 proved to be much more reliable and fuel-efficient than the SD50, and did much to repair the damage to EMD's reputation caused by the unreliable SD50. EMD claimed that three SD60 units could replace four of the industry standard workhorse SD40-2.
[edit] Variants
Several variants of the SD60 were built, including:
- The standard SD60, which had a conventional hood unit configuration.
- The SD60F, ordered and operated by Canadian National, had a full-width cowl body and four piece windshield.
- The SD60I "WhisperCab" variant featured a cab (with a full-width short hood) that was isolated from sound and vibration using a system of rubber gaskets. The same cab was later used on the SD70I, the SD80MAC and the SD90MAC. Only Conrail ordered this engine. All of these locomotives now belong to Norfolk Southern and CSX
- The SD60M, first ordered by the Union Pacific featured a "North American safety cab" design with a full-width short hood. Early models featured a three-window design with vertical windows (nicknamed "triclops"); later production used two windshield panes that were sloped back, and a somewhat shorter nose.
- The SD60MAC was a variant of the SD60M with AC powered traction motors. Although four demonstrator SD60MAC units tested on the Burlington Northern proved the viability of EMD's AC traction system, all subsequent orders were for the SD70MAC.
[edit] Original owners
| Railroad | Quantity | Road numbers | Notes |
|---|---|---|---|
| EMD SD60 orders | |||
| Burlington Northern Railroad | 3 | 8300-8302 | Now with CSX Transportation |
| Chicago and North Western Railway | 55 | 8001-8055 | Built to SOO Line specifications; SOO was unable to take delivery due to financial conditions and the order was passed to C&NW |
| Conrail | 25 | 6843-6867 | |
| CSX Transportation | 10 | 8700-8709 | |
| EMDX | 4 | 1-4 | Demonstrators |
| Kansas City Southern Railway | 46 | 714-759 | |
| Norfolk Southern Railway | 151 | 6550-6700 | |
| Oakway | 100 | 9000-9099 | Leased to Burlington Northern Railroad |
| Soo Line | 58 | 6000-6057 | |
| Union Pacific Railroad | 85 | 6000-6084 | |
| EMD SD60F orders | |||
| Canadian National Railway | 60 | 9900-9903, 5504-5563 | |
| EMD SD60I orders | |||
| Conrail | 81 | 5544, 5575-5653 | |
| EMD SD60M orders | |||
| Burlington Northern Railroad | 100 | 1991, 9200-9298 | |
| Conrail | 74 | 5500-5574 | |
| Soo Line | 5 | 6058-6062 | |
| Union Pacific Railroad | 281 | 6085-6365 | |
[edit] References
- Diesel Era (unknown year). EMD's SD60 Series – Steppingstone to the 21st Century. Diesel Era. ISBN 1-881411-08-7.
[edit] External links
| 6- and 8-axle diesel-electric locomotives built by GM-EMD | |
|---|---|
| Six-axle road power: | SD7, SD9, SD18, SD24, SD28, SD35, SDP35, SD38, SD38AC, SD38-2, SD39, SDL39, SD40, SD40X, SD40A, SD40-2, SD40-2W, SD40T-2, SD40-2S, SDP40, SD45, SD45X, SD45-2, SD45T-2, SDP45, SD50, SD60, SD70, SD70M, SD70MAC, SD70M-2, SD70ACe, SD75M, SD75I, SD80MAC, SD90MAC |
| Eight-axle road power: | DD35, DD35A, DDA40X, DDM45 |
| See also: | List of GM-EMD locomotives |
| Diesel cab and cowl locomotives built by GM-EMD | |
|---|---|
| Cab units (F- & E-units): |
FT, F2, F3, F7, FP7, F9, FP9, FL9, TA, EA/EB, E1, E2, E3, E4, E5, E6, E7, E8, E9, AB6 |
| Cowl units: | F45, FP45, F40C, F40PH, F40PH-2, F40PH-2C, F40PH-2M, SDP40F, SD40-2F, SD50F, F59PH, F59PHI, SD60F, F69PHAC |
| See also: | List of GM-EMD locomotives |
