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The JNR Class DD14 is a diesel-hydraulic locomotive operated by the Japanese National Railways and its various successors since 1960.

History[]

The DD14 was designed as a dedicated snow-clearing locomotive; these were the first dedicated snow-clearing locomotives operated by the JNR. A total of 43 locomotives were produced by Kisha Seizō and its successor Kawasaki Heavy Industries; some specification changes were made after DD14 1 through 8 were manufactured, with these changes implemented on what is known as the DD14-300. In addition to snow clearing duties, the DD14 was also used for occasional switching jobs. When the JNR was privatized and split in 1987, JR East, West and Hokkaido took ownership of the DD14s.

JR Hokkaido withdrew their fleet of DD14s in 1996 with the closure of the Shinmei Line and JR West, which had been using the locomotives around the Hokuriku Region, withdrew their fleet in 2002. Most of JR East's locomotives would be used until 2007 when they were replaced by ENR-1000 snow clearing locomotives, while also withdrawing the DE15 and DD16 from service in the process; following this five locomotives remained in service, DD14 310, DD14 327 and DD14 332 through 334. DD14 333 was retired in 2008, DD14 334 was retired in 2010, DD14 332 was retired in 2015 while DD14 327 was retired in 2020; DD14 310 remains on JR East's fleet roster although it has been out of service for some time. The locomotive is located at Morioka Shinkansen Rolling Stock Center and is rarely seen.

Four locomotives have been preserved. One locomotive, DD14 331, was moved to Taiwan and is used for switching purposes with its snowplow removed.

Design[]

The DD14s featured a semi-streamlined design, being painted in red with silver accents. A large headlight is mounted on the top of the cab.

Specifications[]

The DD14s are fitted with two V12 prime movers, designated the DMF31SB-R. Total power output is about 2,200 PS (1,600 kW). The DD14 uses a a Shinko DS1.2/1.35 hydraulic transmission; the transmission works similarly to a Lysholm-Smith hydraulic torque converter and features two speeds and a single direct gear. The locomotive itself is heavily based on the DD13, while the snowplow is a Beilhack-type snowplow.

Preservation[]

The following Class DD14 locomotives have been preserved:

Number Manufacturer Date manufactured Date retired Location Notes
DD14 1 Kisha Seizō 13 January 1961 2 February 1987 Mikasa Railway Memorial Hall, Mikasa, Hokkaido, Japan Displayed outdoors with snowplow
DD14 312 16 February 1971 30 December 1988 Okhotsk Railway History Preservation Society, Kitami, Hokkaido, Japan
DD14 323 Kawasaki Heavy Industries 23 July 1976 1 April 1993 Otaru City General Museum, Otaru, Hokkaido, Japan
DD14 332 19 October 1979 31 July 2003 Niitsu Railway Museum, Niigata, Japan Displayed under shelter with snowplow
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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