Seibu Class E851

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Preserved Seibu Class E851 electric locomotive No. E854 on display at Yokoze Depot Open Day, October 2010
Type and origin
Power type Electric
Builder Mitsubishi
Build date 1969
 • UIC Bo-Bo-Bo
Gauge 1,067 mm (3 ft 6 in)
Electric system(s) 1,500 V DC
Traction motors DC
Performance figures
Power output 2,550 kW
Operators Seibu Railway
Number in class 4
Disposition Withdrawn

The Class E851 was a class of four DC electric locomotives operated by the private railway operator Seibu Railway in Japan between 1969 and 1996.

Built in 1969 by Mitsubishi to haul 1,000-tonne cement trains, the design was based on the JNR Class EF65 and used bogies similar to those used on the JNR Class EF81 locomotives.

From 30 November 1990, the discontinuation of freight services to Sayamagaoka eliminated the need for double-heading, and the end of all Seibu freight services from 7 March 1996 saw the E851s become surplus to requirements. Final farewell Sayonara runs were organized in May 1996 hauling JR 12-series passengers coaches from Tokorozawa to Yokoze.

Locomotive E854 remains preserved at Yokoze Depot, but the other three locomotives in the class were cut up.

See also[edit]


  • "西武鉄道 電気機関車小史2" (Short History of Seibu Electric Locomotives) by Fumio Gotō in January 2009 issue of Japan Railfan Magazine, p. 138-143

External links[edit]