JNR Class EF55

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Class EF55
EF55-1 Matsumoto 20031013.jpg
EF55 1 at Matsumoto Station, October 2003
Type and origin
Power type Electric
Builder Hitachi, Kawasaki, Tōyō Electric
Build date 1936
Total produced 3
 • AAR 2-C+C-1
 • UIC (2'Co)(Co'1)
Gauge 1,067 mm (3 ft 6 in)
Driver dia. 1,250 mm (4 ft 1 in)
Trailing dia. 860 mm (2 ft 10 in)
Length 19,150 mm (62 ft 10 in)
Width 2,810 mm (9 ft 3 in)
Height 3,810 mm (12 ft 6 in)
Loco weight 100.38 t
Electric system/s 1,500 V DC
Performance figures
Maximum speed 75 km/h (47 mph)[1]
Power output 1.350 MW (1,810 hp)
Tractive effort 6,300 kgf (61,780 N; 13,890 lbf)
Operators JNR, JR East
Number in class 3
Delivered March 1936
Preserved 1
Disposition All withdrawn

The Class EF55 (EF55形) is a 2Co+Co1 wheel arrangement electric locomotive type consisting of three locomotives built in 1936 by Hitachi, Kawasaki, and Tōyō Electric in Japan.[2] They were nicknamed "Moomin".


They were originally intended to haul limited express trains on the Tōkaidō Line. Although based on the earlier EF53 design, the EF55s featured a unique non-symmetrical wheel arrangement with a streamlined cab at only one end. The number 2 end had a traditional-style cab with access deck.[1]


The need to turn locomotives in regular use proved to be the downfall for this small class,[2] and the locomotives were placed in storage from 1958, and then officially withdrawn in 1964. Following withdrawal, EF55 1 was moved to the former Chūō Railway Institute near Nishi-Kokubunji Station for apprentice training purposes.[2] EF55 3 was cannibalized to donate motors and other components to the ED30 prototype AC electric locomotive, and EF55 2 was also cut up shortly after.[2]

Preserved examples[edit]

EF55 1 was designated as an important piece of railway heritage in 1978, and was subsequently restored to running condition, re-entering service in 1986 for use hauling special event trains.[2] It was operated by JR East, based at Takasaki depot, until it was finally withdrawn in December 2008.

EF55 1 was moved from Takasaki to Omiya in January 2015,[3] and exhibited at JR East's Railway Museum from 12 April.[4]

See also[edit]


  1. ^ a b JR全車輛ハンドブック'93 [JR Rolling Stock Handbook 1993] (in Japanese). Japan: Neko Publishing. 1993. 
  2. ^ a b c d e Inoue, Kōichi (1999). 国鉄機関車辞典 [JNR Locomotive Encyclopedia] (in Japanese). Japan: Sankaido. p. 92–93. ISBN 4-381-10338-6. 
  3. ^ EF55 1,鉄道博物館で展示へ [EF55 1 to be exhibited at Railway Museum]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 27 January 2015. Retrieved 27 January 2015. 
  4. ^ 鉄道博物館EF55 1に「ご紋章」と日章旗 [EF55 1 at Railway Museum adorned with crest and flags]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 26 April 2015. Retrieved 27 April 2015.