Locomotive Wiki
Advertisement

The JNR Class EF18 was a Japanese DC electric locomotive operated by the Japanese National Railways from May 1951 to 1979.

History[]

The EF18s were created from three partially-completed EF58 locomotives, numbered 32 through 34. The three locomotives, produced at Tokyo Shibaura Denki's Fuchū plant in 1949, were nearing completion but their commissioning was put on hold due to the Dodge Line coming into effect. The three locomotives were then left as dead stock and were then rebuilt as freight locomotives, with their designations changed to reflect the mechanical changes done to the locomotives.

The three EF18s entered service in May 1951. The locomotives were mainly used to haul freight trains on the Tōkaidō Main Line, but they also did switching work in Shizuoka Prefecture and were also rented out to depots and areas lacking motive power. The locomotives were retired in 1979 and towed to Hamamatsu Works for scrapping.

No Class EF18 locomotives have been preserved. There may have been efforts to convert the three EF18s into EF58s but none came to fruition.

Design[]

The EF18s featured the box-shaped bodies of the original batch of Class EF58 locomotives.

Specifications[]

The EF18s feature resistor-controlled traction motors and a steel body construction.

Compared to the EF58s they were based on the EF18s featured some significant mechanical differences, such as a low-speed gear ratio in an attempt to increase tractive effort; due to the large number of front wheels the driving wheels's weight was insufficient to increase the tractive effort, so dead weight was added to compensate and as such the axle load was increased.

The train body was also reinforced, with ventilation holes cut to cool the electrical equipment. The front deck was also extended significantly compared to the EF58s.

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
Advertisement