The SD70MACe is a rebuilt SD70MAC locomotive with new Mitsubishi electronics and traction motors to replace the Siemens traction motors. It was first rebuilt for the BNSF Railway, [57] and later rebuilt …

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.

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.

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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 …

The Alaska Railroad (ARRC) owns 28 SD70MAC locomotives, which make up more than half of ARRC’s 51-unit locomotive fleet. “SD” refers to Special Duty and “MAC” translates to “M” for Modified cab …

The first SD70MAC was delivered to the BN in 1993 and established a standard locomotive type that remains a favorite on BNSF today. As the last new locomotives purchased by Burlington Northern, …

Jul 31, 2025 · Burlington Northern Santa Fe 9400, the SD70MAC diesel locomotive that pioneered AC traction for freight service in the United States when it was built in 1993, has been donated by BNSF …

Jan 24, 2026 · 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 …

Oct 24, 1998 · CSX opted out of the SD80MAC order in favor of SD70MAC's built to CSX specifications. The 4,000hp locomotives were numbered 4130 - 4144, assembled and painted at the Juniata …