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The SD70MAC is no longer produced due to EPA regulations, and was replaced by the SD70ACe in 2004. In total, 1,109 SD70MACs were produced, purchased by Burlington Northern (and its successor, BNSF ), Conrail , CSX , Transportación Ferroviaria Mexicana (TFM; units now owned by Kansas City Southern Railway (KCS)), and the Alaska Railroad .
BNSF Railway (reporting mark BNSF) is the largest freight railroad in the United States. One of six North American Class I railroads, BNSF has 36,000 employees, [1] 33,400 miles (53,800 km) of track in 28 states, and over 8,000 locomotives. [2]
Type Road number Build year Total produced AAR wheel arrangement Prime mover Power output Image EMC 1800 hp B-B: ATSF 1: 1935 1 B-B+B-B: Dual Winton 12-201-A: 1,800 hp (1,342 kW)
Introduced at the Railway Interchange Expo 2015 at BNSF North Town Yard, Minneapolis, Minnesota, from October 4 to October 7, 2015. This new engine was first used on SD70ACe-T4, the Tier 4 freight locomotive from EMD. This engine features a two-stage turbocharging system consisting of three turbochargers: one turbo (the primary/high pressure ...
These locomotives were built as a response to General Electric's Dash 9-44CW, where as their cousins, the SD70MAC, were built in response to General Electric's AC4400CW. 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.
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 locomotive. SOO Line EMD SD60 #6032 GMD SD60F, CN 5536 EMD SD60I, CSX 8747, Plymouth, Michigan EMD SD60M (Early model, "Triclops"), UP 2317 EMD SD60M (Late model,
Only BNSF ordered the model in 2014. [3] The other locomotive with this wheel arrangement is the EMD SD70MACH, which is an SD70MAC rebuilt by Progress Rail for Metra and used for passenger service. In 2020, Metra approved of the purchase of 15 of these locomotives with options to purchase up to 27 more. [4]
BNSF, Southwest Service, Rock Island, Union Pacific Lines 100-149 rebuilt to -3 specifications between 2008 and 2012. [94] 100 repainted into RTA wrap from September 14, 2017-mid 2018. 104 given a paint scheme honoring the City of Chicago, revealed on May 4, 2022. 120 given a paint scheme honoring the Veterans, revealed on November 7, 2024.