The majority of SD70MAC models were produced with the 4,000 horsepower (3,000 kW) EMD 710 prime mover while later units are rated at 4,300 horsepower (3,200 kW) and feature EMD SD45-style flared radiators.

Apr 25, 2021 · EMD’s SD70MAC was the first production alternating-current traction locomotive to be delivered to a customer when Burlington Northern accepted the first of hundreds of SD70MACs in December 1993.

Dec 28, 2022 · Locomotive Phases - EMD SD70MAC. The SD70MAC was introduced in 1993 following two years of tests with four SD60MAC prototypes. It was EMD's first production locomotive with AC traction motors and, along with the rest of the SD70 series, was the first to use EMD's radial-steering, bolsterless "HTCR" truck design.

The EMD (Electro-Motive Division of General Motors), SD70MAC is a six-axle, 4,000-4,300 horsepower diesel-electric locomotive built from 1993 to 2004. Over 1,100 were built, with 15 built specially for Conrail and over 350 built for the Burlington Northern (with …

Dec 16, 2024 · Across the industry the most successful SD70 has been the SD70MAC. The MAC carries the same wide-cab design as the SD70M except that it also features AC (alternating current) traction motors. Different from the traditional DC (direct current) traction motors AC is much more simple, reliable and easier to maintain albeit it costs far more.

EMD SD70MAC; Data Sheet Information Compiled by: R. Craig: New: 20 September 2006: Artwork by: Jean-Denis Bachand-Engine Builder: EMD: Engine: 710G3C-ES 16 cylinder

Feb 20, 2024 · The landmark SD70MAC model in 1993 would lead North America into the AC traction era that dominates the industry today. The SD70MAC’s successor, the SD70ACe, brought about changes partially to comply with the new Tier 2 emission level that featured a …

The EMD (Electro Motive Division) SD70MAC is a type of six-axle, AC-traction, 4,000hp (later units rated at 4,300hp) diesel locomotive built from 1993 to 2004 (while production briefly resumed from 2005 to 2007 for orders from the Alaska Railroad).

The SD70MAC was built between 1993 and 2003 by the Electro Motive Division (EMD) of General Motors. Over 1500 were built for five dif-ferent railroads and they operate throughout North America. The Alaska Railroad purchased SD70MACs in three different orders. The first 16 were delivered in 1999 and 2000. These original MACs are 4000

Dec 24, 2011 · The Electromotive Division SD70M is a 6 axle, 4,000 HP diesel-electric locomotive built by EMD (by this time EMD was now manufacturing 100% of it's locomotives at the London, ON plant) from 1992 to 2004.