Ube Electric Railway Class DeKi 11

Ube Electric Railway Class DeKi 11
Ueda Maruko ED25 1 (ex-Ube DeKi 11) in June 2023
Technical specifications
Manufacturer(s)	Nippon Tetsudō Jidōsha Kōgyō
Constructed	1937
Number built	1
Classification	B-B
Dimensions	8,790 mm × 2,665 mm × 4,100 mm
Gauge	1,067 mm (3 ft 6 in)
Current collector	Pantograph
Electric system(s)	600 V DC
Traction system	Resistor control
Service information
In service	1937 – 1986
Number in service	None
Fleet numbers	DeKi 11, later ED25 1
Preservation information
Preserved	1

The Ube Electric Railway Class DeKi 11 is a Japanese DC electric locomotive operated by the Ube Electric Railway and later other railway companies from 1937 to 1986.

History

The Class DeKi 11 is an early electric locomotive used in Japan. Operated by the Ube Electric Railway, the preceding operator of what is now the East Japan Railway Company's Ube Line, one locomotive was manufactured by Nippon Tetsudō Jidōsha Kōgyō (now Tōyō Kōki) in 1937. It was one of a number of small electric locomotives manufactured by the company.

Originally used by the Ube Electric Railway, the railway was merged with the Ube Railway in 1941. The locomotive was not renumbered when the Ube Railway was acquired by the Japanese National Railways in 1943 and continued operation as DeKi 11 until 1952, when it was reclassified as the Class ED25 and renumbered ED25 1. The locomotive was moved to the Toyamakō Line in 1950, where it operated with the similar RoKo 2 (later ED26 1). The locomotives's Amemiya Seisakusho bogies were replaced with Brill 27MCB-2 bogies in 1951 and its traction motors replaced with Westinghouse WH-558-J6 motors, both sourced from De 203 of the Ina Electric Railway.

ED25 1 was removed from service on the Toyamakō Line in 1961 as new locomotives were introduced; it was transferred to the Ueda Maruko Electric Railway's Maruko Line in 1961. When the line was abolished in April 1969 the locomotive was transferred to the Besshō Line, where it pulled freight trains until 1 November 1984 with the abolition of freight trains on that railway. With few opportunities to pull freight trains the locomotive would be used for switching duties until it was withdrawn in 1986. ED25 1 was donated to Maruko Town shortly thereafter; the locomotive is now on display at Marukokogyohyakunen Memorial Park.

Specifications

The Class DeKi 11 used a nose suspension drive system. Westinghouse WH-558-J6 traction motors were used on the locomotives.

Preservation

The following Class DeKi 11 locomotives have been preserved:

Number	Manufacturer	Equipment manufacturer	Date manufactured	Date retired	Location	Notes
ED25 1	Nippon Tetsudō Jidōsha Kōgyō	Nippon Tetsudō Jidōsha Kōgyō	1937	1961 (JNR) 1986 (Ueda)	Marukokogyohyakunen Memorial Park, Nagano, Japan	Ex-Ube DeKi 11, displayed outdoors

Ube Railway motive power
Steam locomotive	1 • 100 • 212 • 300
Electric locomotive	DeKi 1 • DeKi 11

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