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"JNR Class ED55" is a name used to refer to two proposed Japanese DC electric locomotives intended to be operated by the Japanese National Railways.

History[]

The designation of "Class ED55" was used for two DC electric locomotives; neither would end up being built.

The initial proposal for the ED55 was drawn up in 1926; it was intended to be a locomotive converted from the ED14 locomotives, intended for passenger usage on the Chūō Main Line and the Yokosuka Line. The construction of the EF52s meant that less priority was put on the projects, and with the electrification of the Yokosuka Line the project was shelved in 1930.

The second proposal for the ED55 was drawn up in 1941, with surplus ED17 locomotives from the Jōetsu Line converted into freight locomotives for use on the Chūō Main Line to assist with Japanese war efforts, with EF12s introduced to replace the aforementioned locomotives; the outbreak of the Pacific War caused priority to be placed on the transportation of cargo, with the locomotives transferred to the Chūō Main Line with no modifications made. The plans were abandoned soon after.

Design[]

The ED55s would have featured large box-shaped bodies with large top-mounted headlights.

Specifications[]

The locomotives would have likely used a nose suspension drive system.

JR Group motive power
JNR Diesel prototype DB10DC10DC11DD10
4-axle diesel DD11DD12DD13DD14DD15DD16DD17DD20DD21DD40DD41DD42DD50DD51DD53DD54DD90DD91DD92DD93
5-axle diesel DE10DE11DE15DE50
6-axle diesel DF40DF41DF50DF90DF91 (gen 1)DF91 (gen 2)DF92DF93
Shinkansen 911912
Narrow-gauge diesel Ke DB10Ke DB11
Early 2/4-axle freight electric AB10EB10ED10ED11ED12ED13ED14ED15ED16ED17ED18 (gen 1)ED18 (gen 2)ED19ED23ED24
Early 4-axle passenger electric ED50ED51ED52ED53ED54ED55ED56ED57
Early 6-axle freight electric EF10EF11EF12EF13EF14EF15EF16EF18
Early 6-axle passenger electric EF20EF50EF51EF52EF53EF54EF55EF56EF57EF58EF59HEF10HEF50
Early 8-axle electric EH10EH50HEH50HEH150
Early Abt rack rail electric EC40ED40ED41ED42
Acquired from private railways ED20ED21ED22ED25 (gen 1)ED25 (gen 2)ED26 (gen 1)ED26 (gen 2)ED27 (gen 1)ED27 (gen 2)ED28 (gen 1)ED28 (gen 2)ED29 (gen 1)ED29 (gen 2)ED30 (gen 1)ED31ED32ED33ED34ED35ED36ED37ED38Ke ED10DeKi 1RoKo 1DeKi 501RoKo 1000
DC 4-axle ED60ED61ED62ED63ED95
AC 4-axle ED44ED45ED70ED71ED72ED73ED74ED75ED76ED77ED78ED79ED90ED91ED93ED94
DC 6-axle EF60EF61EF62EF63EF64EF65EF66EF67EF90
AC 6-axle EF70EF71
Dual-current ED30 (gen 2)ED46ED92EF30EF80EF81
Other AH100
JR Group Dual-current electric ED500EF500EF510EH500
DC electric EF200EF210EH200
DC EMU M250
AC electric EH800
Diesel DD18DD19DB500DD200DF200ENR-1000
Hybrid HD300
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