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JNR Class DD14

Class DD14
JR East DD14 327 and 332 in action in February 2012
Type and origin Power type Diesel-hydraulic Builder Kisha Seizō, Kawasaki Build date 1961-1979 Total produced 43
Specifications Configuration: ​  • AAR B-B  • UIC B'B' Gauge 1,067 mm (3 ft 6 in) Train heating None Safety systems ATS-SN
Performance figures Maximum speed 70 km/h (45 mph)
Career Operators JNR JR East JR West JR Hokkaido Locale Japan Last run 24 February 2015 Preserved 4 Disposition Withdrawn

The Class DD14 (DD14形) was a B'B' wheel arrangement diesel-hydraulic locomotive type operated in Japan as a self-propelled rotary snowplough unit from 1961 to 2015 by the national railway company Japanese National Railways (JNR), and later by East Japan Railway Company (JR East). West Japan Railway Company (JR West), and Hokkaido Railway Company (JR Hokkaido).

Design[edit]

Based on the earlier Class DD13 6th-batch locomotives, the Class DD14 was a single-end-cab design with a rotary snowplough unit at the cab end.^[1] It was the first diesel-powered rotary snowplough built by JNR. The locomotives had two 500 hp (370 kW) diesel engines. One engine could be used for propulsion with the other driving the rotary snowplough unit, giving a snow-clearing capacity of approximately 3,000 tonnes per hour, or the unit could be operated in multiple with a second locomotive allowing both engines to drive the rotary snowplough, giving a snow-clearing capacity of approximately 4,000 tonnes per hour.^[1]

• 
  Snowplough detail of DD14 317, October 2001
• 
  A pair of DD14s with their snowplough units detached, March 2008

Variants[edit]

• DD14-0: 8 locomotives built between 1961 and 1965 by Kisha Seizō^[1]
• DD14-300: 35 locomotives built between 1966 and 1979 by Kisha Seizō and Kawasaki Heavy Industries^[1]

History[edit]

By 2005, only nine locomotives remained in service, all operated by JR East.^[2] The last remaining locomotives in service, DD14 327 and 332, based at JR East's Nagaoka Depot, made their final run on 24 February 2014.^[3]

Fleet list[edit]

Preserved examples[edit]

As of 2012^[update], three Class DD14 locomotives are preserved in Japan, with one locomotive sold to Taiwan High Speed Rail (THSR) in Taiwan.^[5]

• DD14 1: Preserved at the Mikasa Railway Museum in Mikasa, Hokkaido
• DD14 312: Preserved privately in Kitami, Hokkaido
• DD14 323: Preserved at the Otaru Museum in Otaru, Hokkaido
• DD14 331: Owned by THSR in Taiwan

• 
  DD14 1 at the Mikasa Railway Museum, May 2007
• 
  DD14 312 in August 2009
• 
  DD14 323 at the Otaru Railway Museum, July 2007
• 
  DD14 331 in Taiwan, August 2008

Related classes[edit]

• Class DD15 snowplough propulsion unit
• Class DD16 snowplough propulsion unit
• Class DD18 snowplough propulsion unit
• Class DD19 snowplough propulsion unit
• Class DD53 snowplough propulsion unit
• Class DE15 snowplough propulsion unit

Classification[edit]

The DD14 classification for this locomotive type is explained below.

• D: Diesel locomotive
• D: Four driving axles
• 14: Locomotive with maximum speed of 85 km/h or less

References[edit]

Wikimedia Commons has media related to JNR DD14.