| EMD SD70 series |
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| Type and origin |
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| Power type | Diesel-electric |
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| Builder | Electro-Motive Diesel (EMD) |
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| Model | SD70, SD70I, SD70M, SD70M-2, SD70AC, SD70MAC, SD70ACe, SD70ACe/LCi, SD70ACS, SD70ACe-T4, SD70ACe-BB, SD70ACe/45, SD70IAC, SD70ACe/LW, SD70ACe-P4, SD70ACe-P6, SD70ACU, SD70ACC, SD70MACH, SD70MACe |
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| Build date | 1992–present |
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| Total produced | SD70: 122
SD70I: 26
SD70M: 1,758
SD70M-2: 363
SD70MAC: 1,154
SD70ACe: 2,134
SD70ACe/lc: 205
SD70ACS: 86
SD70ACe-P4: 80
SD70ACe-P6: 50
SD70ACe-T4: 176
SD70ACe-BB: 64
SD70ACe/45: 537 |
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| Specifications |
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Configuration:
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| • AAR | C-C (B+B-B+B for SD70ACe-BB, B1-1B for SD70ACe-P4 and SD70MACH) |
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| • UIC | Co'Co' (Bo'Bo'Bo'Bo' for SD70ACe-BB, Bo1’1Bo’ for SD70ACe-P4 and SD70MACH) |
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| • Commonwealth | Co-Co (Bo+Bo-Bo+Bo for SD70ACe-BB, Bo1-1Bo for SD70ACe-P4 and SD70MACH) |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge for the North American market;
1,520 mm (4 ft 11+27⁄32 in) for Yakutia;
1,600 mm (5 ft 3 in) for Brazil;
1,000 mm (3 ft 3+3⁄8 in) for Brazil and Guinea |
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| Trucks | EMD HTCR-Ia: SD70, SD70I, SD70M, SD70MAC;
EMD HTCR-Ib: SD70I, SD70M, SD70MAC, SD70ACU;
EMD HTCR-4: SD70M, SD70MAC, SD70ACe;
EMD HTCR-6: SD70ACe, SD70ACe-T4;
EMD HTSC-II: SD70M, SD70ACe, SD70ACe/LCi, SD70ACS, SD70ACe/45;
EMD GBB: SD70ACe-BB |
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| Prime mover | EMD 16-710G3 2-stroke diesel;
EMD 12-1010J 4-stroke diesel for SD70ACe-T4 |
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| Engine type | V16;
V12 for SD70ACe-T4 |
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| Cylinders | 16
12 for SD70ACe-T4 |
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| Transmission | Diesel electric |
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| Performance figures |
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| Maximum speed | 70 mph (110 km/h), 75 mph (121 km/h) for the SD70ACe-T4 |
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| Career |
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| Nicknames | Vacuum Cleaners (SD70ACe-T4) Thundercabs (Early SD70ACe models) |
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| Locale | North America, Brazil, Peru, Guinea, Mauritania, Saudi Arabia, United Arab Emirates |
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| Disposition | Many operational, several retired due to wrecks, one preserved. |
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The EMD SD70 is a series of diesel-electric locomotives produced by the US company Electro-Motive Diesel. This locomotive family is an extension and improvement of the EMD SD60 series. Production commenced in late 1992 and since then over 5,700 units have been produced; most of these are the SD70M, SD70MAC, and SD70ACe models. While the majority of the production was ordered for use in North America, various models of the series have been used worldwide. All locomotives of this series are hood units with C-C trucks, except the SD70ACe-P4 and SD70MACH which have a B1-1B wheel configuration, and the SD70ACe-BB, which has a B+B-B+B wheel arrangement.
Superseding the HT-C truck, a new bolsterless radial HTCR truck was fitted to all EMD SD70s built 1992–2002; in 2003 the non-radial HTSC truck (basically the HTCR made less costly by removing radial components) was made standard on the SD70ACe and SD70M-2 models; the radial HTCR truck remained available as an option.
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