Six-axle Roadswitchers or Special Duty Locomotives (SD)
| Model designation | Build year | Total produced | AAR wheel arrangement | Prime mover | Power output | Image |
|---|---|---|---|---|---|---|
| SD7 | 1952–1953 | 188 | C-C | EMD 16-567B | 1,500 hp (1.1 MW) |
|
| SD9 | 1954–1959 | 515 | C-C | EMD 16-567C | 1,750 hp (1.7MW) |
|
| SD18 | 1960–1963 | 114 | C-C | EMD 16-567D1 | 1,800 hp (1.3 MW) |
|
| SD24 | 1958–1963 | 224 | C-C | EMD 16-567D3 | 2,400 hp (1,880 kW) |
|
| SD28 | 1965 | 12 | C-C | EMD 16-567D1 | 1,800 hp 1,300 kW) |
|
| SD35 | 1964–1966 | 360 | C-C | EMD 16-567D3A | 2,500 hp (1.9 MW) |
|
| SDP35 | 1964–1965 | 35 | C-C | EMD 16-567D3A Steam generator |
2,500 hp (1.9 MW) |
|
| SD38 | 1967–1971 | 53 | C-C | EMD 16-645E | 2,000 hp (1,500 kW) |
|
| SD38AC | 1971 | 15 | C-C | EMD 16-645E3 | 2,000 hp (1,500 kW) |
|
| SD38-2 | 1972–1979 | 83 | C-C | EMD 16-645E3 | 2,000 hp (1,500 kW) |
|
| SD39 | 1968–1970 | 54 | C-C | EMD 12-645E3 | 2,300 hp (1,700 kW) |
|
| SDL39 | 1969–1972 | 10 | C-C | EMD 12-645E3 | 2,300 hp (1.7 MW) |
|
| SD40X | 1964–1965 | 9 | C-C | EMD 16-645E3 | 3,000 hp (2.2 MW) |
|
| SD40 | 1966–1972 | 1,268 | C-C | EMD 16-645E3 | 3,000 hp (2.2 MW) |
|
| SD40A | 1969–1970 | 18 | C-C | EMD 16-645E3 | 3,000 hp (2,240 kW) | |
| SDP40 | 1966–1970 | 20 | C-C | EMD 16-645E3 Steam generator |
3,000 hp (2,240 kW) | |
| SD40T-2 | 1974–1980 | 312 | C-C | EMD 16-645E3 | 3,000 hp (2.2 MW) |
|
| SD40-2 | 1972–1986 | 3,949 | C-C | EMD 16-645E3 | 3,000 hp (2.2 MW) |
|
| SD40M-2 | C-C | EMD 16-645E3 | 3,000 hp (2.2 MW) |
|||
| SD40-2W | 1975–1980 | 123 | C-C | EMD 16-645E3 | 3,000 hp (2.2 MW) |
|
| SD40-2S | 1978–1980 | 9 | C-C | EMD 16-645E3 | 3,000 hp (2.2 MW) |
|
| SD45 | 1965–1971 | 1,260 | C-C | EMD 20-645E3 | 3,600 hp (2.7 MW) |
|
| SD45X | 1970–1971 | 7 | C-C | EMD 20-645E3 | 4,200 hp (3.1 MW) |
|
| SD45M | C-C | |||||
| SDP45 | 1967–1970 | 52 | C-C | EMD 20-645E3 Steam generator |
3,600 hp (2.7 MW) |
|
| SD45T-2 | 1972–1975 | 247 | C-C | EMD 20-645E3 | 3,600 hp (2.7 MW) |
|
| SD45-2 | 1972–1974 | 136 | C-C | EMD 20-645E3 | 3,600 hp (2.7 MW) |
|
| SD50 | 1984–1985 | 421 | C-C | EMD 16-645F3B | 3,500-3,600 hp (2.6 MW) |
|
| SD50F | 1985–1987 | 60 | C-C | EMD 16-645F3B | 3,600 hp (2.6 MW) |
|
| SD50S | 1980 | 6 | C-C | EMD 16-645F3B | 3,500 hp (2.6 MW) |
|
| SD60 | 1984–1991 | 537 | C-C | EMD 16-710G3A | 3,800 hp (2.8 MW) |
|
| SD60F | 1985–1989 | 64 | C-C | EMD 16-710G3A | 3,800 hp (2.8 MW) |
|
| SD60I | 1993–1995 | 81 | C-C | EMD 16-710G3A | 3,800 hp (2.8 MW) |
|
| SD60M | 1989–1993 | 461 | C-C | EMD 16-710G3A | 3,800 hp (2.8 MW) |
|
| SD60MAC | 1991–1992 | 4 | C-C | EMD 16-710G3A | 3,800 hp (2.8 MW) |
|
| SD70 | 1993–1999 | 122 | C-C | EMD 16-710G3 | 4,000 hp (3.2 MW) |
|
| SD70I | 1995 | 26 | C-C | EMD 16-710G3 | 4,000 hp (3.2 MW) |
|
| SD70ACe | 2003- | 842 | C-C | EMD 16-710G3A | 4,300 hp (3.2 MW) |
|
| SD70ACS | 2009- | 25 | C-C | EMD 16-710G3A | 4,500 hp (3.4 MW) |
|
| SD70M | 1992–2004 | 1,646 | C-C | EMD 16-710G3 | 4,000 hp (3.2 MW) |
|
| SD70M-2 | 2004- | 180 | C-C | EMD 16-710G3 | 4,300 hp (3.2 MW) |
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| SD70MAC | 1993–2004 | 1,109 | C-C | EMD 16-710G3 | 4,000 hp (3.2 MW) |
|
| SD75M | 1995–1996 | 76 | C-C | EMD 16-710G3 | 4,300 hp (3.2 MW) |
|
| SD75I | 1996–1999 | 207 | C-C | EMD 16-710G3 | 4,300 hp (3.2 MW) |
|
| SD80MAC | 1995–1996 | 30 | C-C | EMD 20-710G3B | 5,000 hp (3.7 MW) |
|
| SD89MAC | 1 | C-C | ||||
| SD90MAC | 1995–2005 | 400 | C-C | EMD 16-265H | 6,000 hp (4.5 MW) |
Read more about this topic: List Of GM-EMD Locomotives
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The path of duty was the way to glory.”
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And the prairie flowers lie low:—”
—Vachel Lindsay (1879–1931)