JNR Class EF66

Specifications
Specifications
Configuration:;
• AAR	B-B-B
• UIC	Bo′Bo′Bo′
• Commonwealth	Bo-Bo-Bo
Gauge	1,067 mm (3 ft 6 in)
Bogies	DT133A (outer), DT134A (centre)
Wheel diameter	1,120 mm (44.09 in)
Length	18,200 mm (59 ft 8+1⁄2 in)
Width	2,800 mm (9 ft 2+1⁄4 in)
Height	4,200 mm (13 ft 9+3⁄8 in)
Loco weight	100.8 tonnes (99.2 long tons; 111.1 short tons)
Electric system/s	1,500 V DC overhead lines
Current pickup(s)	Pantograph
Traction motors	DC motors (MT56) (x6)
Transmission	Single-stage reduction gear (20:71), flexible quill drive

Type and origin
Type and origin
Builder	Kawasaki Sharyo, Kawasaki Heavy Industries, Kisha Seizo, Toshiba
Total produced	89

Class EF66
Class EF66
	JR Freight EF66 27 in May 2013
Builder
Type and origin
Builder	Kawasaki Sharyo, Kawasaki Heavy Industries, Kisha Seizo, Toshiba
Total produced	89
Configuration:;
Specifications
Configuration:;
• AAR	B-B-B
• UIC	Bo′Bo′Bo′
• Commonwealth	Bo-Bo-Bo
Gauge	1,067 mm (3 ft 6 in)
Bogies	DT133A (outer), DT134A (centre)
Wheel diameter	1,120 mm (44.09 in)
Length	18,200 mm (59 ft 8+1⁄2 in)
Width	2,800 mm (9 ft 2+1⁄4 in)
Height	4,200 mm (13 ft 9+3⁄8 in)
Loco weight	100.8 tonnes (99.2 long tons; 111.1 short tons)
Electric system/s	1,500 V DC overhead lines
Current pickup(s)	Pantograph
Traction motors	DC motors (MT56) (x6)
Transmission	Single-stage reduction gear (20:71), flexible quill drive
Maximum speed
Performance figures
Maximum speed	110 km/h (70 mph)
Power output	3.9 MW (5,200 hp)
Tractive effort	192 kN (43,000 lbf)
Operators
Career
Operators	■ JNR; ■ JR West; ■ JR Freight;
Number in class	39 (as of 1 April 2016)
Delivered	1966
Withdrawn	EF66-0 1992-Present
Disposition	In service
	This train won the 12th Blue Ribbon Award in 1969.

The Class EF66 (EF66形) is a six-axle, three-bogied (Bo′Bo′Bo′) DC electric locomotive designed for fast freight used by Japanese National Railways (JNR) and later operated by its descendants JR West and JR Freight. As of 1 April 2016, 39 locomotives remained in service, all operated by JR Freight.

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