EMD AEM-7

Specifications
Specifications
Configuration:;
• AAR	B-B
• UIC	Bo'Bo'
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	51+1⁄8 in (1,299 mm)
Wheelbase	25 ft 7+1⁄16 in (7.80 m) (between truck centers)
Length	51 ft 1+25⁄32 in (15.590 m)
Width	10 ft 2 in (3.10 m)
Height	14 ft 9.5 in (4.51 m)
Loco weight	101 short tons (90 long tons; 92 t)
Power supply	500 kW, 480 V AC
Electric system/s	Overhead line: 12 kV AC at 25 Hz; 12.5 kV AC at 60 Hz; 25 kV AC at 60 Hz;
Current pickup(s)	Dual pantographs
Traction motors	ASEA LJH 108-5 (DC); Alstom 6 FXA 5856 (AC);
Head end power	500 kW (DC); 1,000 kW (AC);
Transmission	85:36
MU working	Yes, AAR
Train heating	Locomotive-supplied head-end power

Type and origin
Type and origin
Power type	Electric
Builder	General Motors Electro-Motive Division ASEA
Model	SJ Rc
Build date	1978–1988
Total produced	65
Rebuilder	Alstom
Rebuild date	1999–2002
Number rebuilt	29

EMD AEM-7
EMD AEM-7
	Amtrak AEM-7 No. 943 with a Metroliner at Seabrook, Maryland, in 1987
Power type
Type and origin
Power type	Electric
Builder	General Motors Electro-Motive Division ASEA
Model	SJ Rc
Build date	1978–1988
Total produced	65
Rebuilder	Alstom
Rebuild date	1999–2002
Number rebuilt	29
Configuration:;
Specifications
Configuration:;
• AAR	B-B
• UIC	Bo'Bo'
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	51+1⁄8 in (1,299 mm)
Wheelbase	25 ft 7+1⁄16 in (7.80 m) (between truck centers)
Length	51 ft 1+25⁄32 in (15.590 m)
Width	10 ft 2 in (3.10 m)
Height	14 ft 9.5 in (4.51 m)
Loco weight	101 short tons (90 long tons; 92 t)
Power supply	500 kW, 480 V AC
Electric system/s	Overhead line: 12 kV AC at 25 Hz; 12.5 kV AC at 60 Hz; 25 kV AC at 60 Hz;
Current pickup(s)	Dual pantographs
Traction motors	ASEA LJH 108-5 (DC); Alstom 6 FXA 5856 (AC);
Head end power	500 kW (DC); 1,000 kW (AC);
Transmission	85:36
MU working	Yes, AAR
Train heating	Locomotive-supplied head-end power
Maximum speed
Performance figures
Maximum speed	125 mph (201 km/h)
Power output	7,000 hp (5.2 MW)
Tractive effort:;
• Starting	51,710 lbf (230 kN)
• Continuous	28,100 lbf (125 kN)
Operators
Career
Operators	Amtrak; MARC; SEPTA;
Numbers	Amtrak: 900–953; MARC: 4900–4903; SEPTA: 2301–2307;
Nicknames	Toasters; Meatballs
Locale	Northeast United States
First run	May 9, 1980 (Amtrak)
Last run	December 1, 2018 (SEPTA)
Retired	2016 (Amtrak); 2017 (MARC); 2018 (SEPTA);
Preserved	Amtrak Nos. 915 and 945
Disposition	Two Amtrak units sold to TTCI, Two Amtrak units sold to Caltrain, Two Amtrak units preserved, all MARC Units Stored, remainder Amtrak and all SEPTA scrapped

The EMD AEM-7 is a twin-cab four-axle 7,000 hp (5.2 MW) B-B electric locomotive built by Electro-Motive Division (EMD) and ASEA between 1978 and 1988. The locomotive is a derivative of the Swedish SJ Rc4 designed for passenger service in the United States. The primary customer was Amtrak, which bought 54 for use on the Northeast Corridor and Keystone Corridor. Two commuter operators, MARC and SEPTA, also purchased locomotives, for a total of 65.

Amtrak ordered the AEM-7 after the failure of the GE E60 locomotive. The first locomotives entered service in 1980 and were an immediate success, ending a decade of uncertainty on the Northeast Corridor. In the late 1990s, Amtrak rebuilt 29 of its locomotives from DC to AC traction. The locomotives continued operating through the arrival of the final Siemens ACS-64 in June 2016. MARC retired its fleet in April 2017 in favor of Siemens Chargers, and SEPTA retired all seven of its AEM-7s in November 2018 in favor of ACS-64s.

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