The KiHa 120 (キハ120形, Kiha-120-gata) is a single-car diesel multiple unit (DMU) train type operated by West Japan Railway Company (JR-West) on its rural lines in Japan. Based on Niigata Tekkō's "NDC" lightweight diesel car design intended for third sector operators (such as Matsuura Railway, Takachiho Railway, and Kumagawa Railway), a total of 89 cars were built, with the class divided into three sub-classes: KiHa 120-0, KiHa 120-200, and KiHa 120-300.
|Manufacturer||JR-West (Gotō Works), Niigata Tekko|
|Entered service||March 1992|
|Number built||89 vehicles|
|Number in service||88 vehicles|
|Number scrapped||1 vehicle (KiHa 120-358, accident damage)|
|Formation||Single car unit|
|Depot(s)||Fukui, Hamada, Hiroshima, Kameyama, Kisuki, Okayama, Shimonoseki, Toyama|
|Car body construction||Steel (KiHa 120-200)|
Stainless steel (KiHa 120-0/300)
|Car length||16,300 mm (53 ft 6 in)|
|Width||2,998 mm (9 ft 10.0 in) (KiHa 120-200)|
3,188 mm (10 ft 5.5 in) (KiHa 120-0/300)
|Doors||2 folding doors per side|
|Maximum speed||95 km/h (59 mph)|
|Weight||26.9 t (KiHa 120-0)|
25.9 t (KiHa 120-200)
27.7 t (KiHa 120-300)
|Power output||250 hp (at 2,000 rpm) (KiHa 120-200)|
330 hp (at 2,000 rpm) (KiHa 120-0/300)
|Bogies||WDT53 (driving), WT237 (trailing)|
|Braking system(s)||Engine brake, Air brake|
|Track gauge||1,067 mm (3 ft 6 in)|
Eight first-batch cars were built in 1992. These had painted steel bodies, two-pane windows, transverse and longitudinal seating, and no toilets. All cars were later modified with the addition of toilets.
22 second-batch cars were built in 1993, including three cars built at JR-West's Gotō Works. These had uprated engines, stainless steel bodies, single-pane windows, longitudinal seating, and no toilets. All cars were later modified with the addition of toilets.
59 third-batch cars were built between 1994 and 1996, including 19 cars built at JR-West's Gotō Works. These were similar in design to the KiHa 120-0 subclass, but were built with some transverse seating. Although not initially built with toilets, all cars were modified with the addition of toilets from 2005.
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- Jēāru zensharyō handobukku: Rail Magazine 2009 JR全車輌ハンドブック2009 [JR Rolling Stock Handbook 2009]. Japan: Neko Publishing. 2009. ISBN 978-4-7770-0836-0.
- Nishiwaki, Kōji (November 2010). JR各社の新世代気動車の現状 JR西日本キハ120形 [The Current Situation of JR Group Modern DMUs: JR-West KiHa 120]. Japan Railfan Magazine. Vol. 50 no. 595. Japan: Kōyūsha. pp. 100–105.