EMD SD75M

EMD SD75M
Type and origin
Power type Diesel-electric
Builder General Motors Electro-Motive Division (EMD)
Model SD75M
Build date 1994 – 1996
Total produced 76
Specifications
Configuration:
 ​
 • AAR C-C
Gauge 4 ft 8 1⁄2 in (1,435 mm)
Prime mover EMD 16-710-G3
Cylinders 16
Transmission diesel electric
Performance figures
Power output 4,300 horsepower (3,200 kW)
Career
Operators Burlington Northern Santa Fe[1]
Numbers BNSF 200-201, 203-208, 210-217, 219-221, 223-224, 226-228, 231-275, renumbered from 8200-8275. NS 2800-2806.
Disposition In service as of 2014

The EMD SD75M is a series of road switcher diesel-electric locomotives produced by General Motors Electro-Motive Division between 1994 and 1996. The series was a response to General Electric's Dash 9-44CW. By increasing the output of the 16-710-G3 engine from 4,000 to 4,300 horsepower (3,000 to 3,200 kW), the SD75 was a reality. The "M" in the model designation is the style of the cab, in this case the North American style cab. The SD75I has an "Isolated Cab", or a "WhisperCab" in EMD speak, which reduces noise and vibration in the cab. Both models use the HTCR radial truck and are mounted on the 72-foot-4-inch (22.05 m) frame. This model only sold 76 units and was not as popular as the SD70. The biggest buyer of this model was the Atchison, Topeka and Santa Fe Railway, now Burlington Northern Santa Fe, with 51 units; an additional 25 were delivered in early 1996, during the merger process. The Santa Fe's SD75Ms were the railroad's last new locomotives, with the very last new unit, number 250, built in August 1995.[2]

Mainly built for a special request from Santa Fe/BNSF, the SD75Ms are slightly more powerful than SD70Ms, having horsepower ratings between 4,300 hp (3,200 kW) & 4500 hp. They are almost identical to SD70Ms, but can be distinguished by the added bulge below the inertial air-intake on the right side of the unit.

In September 2014, Norfolk Southern purchased 7 SD75Ms via National Railway Equipment Company.[3]

Current and Former operators

Railroad Quantity Road Numbers Notes
Atchison, Topeka and Santa Fe Railway 51 200-250 Passed on to BNSF following the BN/ATSF merger in 1996.
BNSF Railway 75 200-275 200-250 sold to PRLX. 251-275 still on property and most are currently undergoing rebuild.
Norfolk Southern Railway 7 2800-2806 Units are former ATSF, purchased from NRE.
Progress Rail Leasing (PRLX) 51 200-250 All units are former ATSF/BNSF.

References

  1. ↑ The Diesel Shop, http://www.thedieselshop.us/, Burlington Northern Santa Fe Roster
  2. ↑ Brian Solomon (7 October 2013). Classic Locomotives: Steam and Diesel Power in 700 Photographs. MBI Publishing Company. p. 480. ISBN 978-1-61058-868-3.
  3. ↑ http://www.nsdash9.com/rosters/2800.html

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