{{short description|Japanese train type}} {{Use dmy dates|date=February 2024}} {{Infobox train | name = KiHa 122/127 series | image = JR West Kiha 127-2 at Oichi Station.jpg | imagesize = 300px | caption = KiHa 127 series 2-car DMU near Oichi Station in September 2019 | service = | manufacturer = [[Niigata Transys]]<ref name="railfan20081002">{{cite web |url= http://railf.jp/news/2008/10/02/135100.html|script-title=ja:キハ127+キハ122，網干へ回送|trans-title=KiHa 127 & 122 moved to Aboshi|date= 2 October 2008|work= Japan Railfan Magazine Online|publisher= Koyusha Co., Ltd.|location= Japan|language= Japanese|accessdate= 14 March 2012}}</ref> | factory = | family = | replaced = | yearconstruction = 2008–2009 | yearservice = 2009 | refurbishment = | yearscrapped = | numberconstruction = | numberbuilt = {{Tree list}} * 19 vehicles ** 7 × KiHa 122 ** 6 × KiHa 127 {{Tree list/end}} | numberservice = 19 vehicles | numberpreserved = | numberscrapped = | formation = {{plainlist| * KiHa 122: Single car unit * KiHa 127: 2 cars per unit }} | fleetnumbers = | capacity = {{plainlist| * KiHa 122: 113 {{nowrap|(33 seated)}} * KiHa 127: 268 {{nowrap|(92 seated)}} }} | operator = [[JR-West]] | depots = Himeji | lines = {{rcb|JR West|Kishin|route}} [[Kishin Line]] | carbody = Stainless steel | carlength = {{plainlist| * KiHa 122: {{nowrap|{{convert|20440|mm|ftin|abbr=on}}}} * KiHa 127: {{nowrap|{{convert|20270|mm|ftin|abbr=on}}}} }} | width = {{convert|2900|mm|ftin|abbr=on}} | height = {{convert|4040|mm|ftin|abbr=on}} | floorheight = | doors = Two pairs per side | maxspeed = {{convert|100|km/h|mph|abbr=on}}<ref name="dj294"/> | weight = | acceleration = | deceleration = | traction = | engine = SA6D140HE-2<ref name="railfan573"/> | poweroutput = Per engine: {{convert|331|kW|hp|abbr=on}} at 2,100 rpm<ref name="railfan573">{{Cite magazine| script-title=ja: キハ１２２・１２７系 気動車 |trans-title=KiHa 122/127 series DMU |magazine=Japan Railfan Magazine| publisher = Kōyūsha Co., Ltd.| location = Japan| volume = 49| issue = 573| pages =68–72| date = January 2009}}</ref> | transmission = Hydraulic | aux = | powersupply = | hvac = WAU707 ×2 | bogies = WDT65 (driving), WTR248 (trailing) | brakes = [[Engine braking|Engine brake]], [[electronically controlled pneumatic brakes]] | safety = ATS-SW | coupling = | multipleworking = | gauge = {{RailGauge|1067mm|lk=on}} }} The {{Nihongo|'''KiHa 122 series'''|キハ122系|Kiha-122-kei}} and {{Nihongo|'''KiHa 127 series'''|キハ127系|Kiha-127-kei}} are [[diesel multiple unit]] (DMU) train types operated by [[West Japan Railway Company]] (JR-West) on the [[Kishin Line]] between {{STN|Himeji|x}} and {{STN|Kōzuki|x}}. A total of 19 cars have been delivered, formed as seven single-car KiHa 122 series units and six two-car KiHa 127 series units.<ref name="dj294">{{Cite magazine| script-title=ja: JR西日本 キハ１２２形・キハ１２７形を姫新線に導入 |trans-title=JR-West to introduce KiHa122/127 on Kishin Line |magazine=Tetsudō Daiya Jōhō magazine| publisher = Kōtsū Shimbun| location = Japan| volume = 37| issue = 294| page =70| date = September 2008}}</ref> Test-running commenced in late September 2008,<ref name="railfan20080922">{{cite web |url= http://railf.jp/news/2008/09/23/175300.html|script-title=ja:キハ127+キハ122が試運転|trans-title=KiHa 125 + KiHa 122 Test run|date= 22 September 2008|work= Japan Railfan Magazine Online|publisher= Koyusha Co., Ltd.|location= Japan|language= Japanese|accessdate= 14 March 2012}}</ref> with the units entering revenue-earning service from the start of the revised timetable on 14 March 2009.<ref>Yomiuri Shimbun: [http://www.yomiuri.co.jp/e-japan/hyogo/news/20090314-OYT8T01130.htm 新型高速ディーゼル登場姫新線 (15 March 2009)]. Retrieved on 18 March 2009 {{in lang|ja}} {{Dead link|date=March 2012}}</ref>
==Exterior== The body design features improved crash resistance, based on the [[223 series]] [[electric multiple unit]] design. The cars use environmentally-friendly diesel engines with reduced [[NOx]] and [[particulate]] emissions.<ref name="jrwest20080826">{{cite web |url= http://www.westjr.co.jp/news/newslist/article/1173812_799.html|script-title=ja:キハ122、127系気動車の新製投入について|trans-title=Introduction of new KiHa 122/127 series diesel cars|date= 26 August 2008|work= Press Release |publisher= West Japan Railway Company |location= Japan|language= Japanese |archiveurl= https://web.archive.org/web/20090115200437/http://www.westjr.co.jp/news/newslist/article/1173812_799.html|archivedate= 15 January 2009|accessdate= 14 March 2012}}</ref>
Externally, the units are finished in unpainted metal with thin yellow and red waistline stripes.<ref name="railfan20080922"/>
<gallery widths=180> <!-- File:Hontatsuno Station at April 09 by CR 15.jpg|WDT65 driving bogie --> File:WTR248 Himeji 20170505 01.jpg|WTR248 trailer bogie </gallery>
==Interior== Internally, the cars feature flip-over reversible seating arranged 2+1 abreast. Toilets in both types of train are [[wheelchair-accessible]], and the step between the passenger compartment and station platform has been eliminated.<ref name="jrwest20080826"/>
<gallery widths=180> File:KiHa 127 series of Kishin line 07.jpg|KiHa 127 interior File:KiHa 127 series of Kishin line 06.jpg|KiHa 127 forward view showing LED fare board for ''wanman'' driver-only operation File:KiHa 127 series of Kishin line 08.jpg|KiHa 127 toilet </gallery>
==Formations== The KiHa 122 single-car units and KiHa 127 two-car units are formed as follows.<ref name="railfan597">{{cite magazine|last = Nishiwaki| first = Kōji| script-title=ja: JR各社の新世代気動車の現況 JR西日本キハ122・127形|trans-title=The Current State of Modern JR DMUs - JR-West KiHa 122/127|magazine=[[Japan Railfan Magazine]]| volume = 51| issue = 597|pages=108–110| publisher = Kōyūsha Co., Ltd.| location = Japan| date = January 2011}}</ref>
===KiHa 122 series (single-car unit)=== The KiHa 122 series uses a diesel engine with a small lithium-ion battery (18 kWh) that is used to power auxiliary machines in the train.<ref>{{cite journal |last1=Yamamoto |first1=T. |date=2017 |title=Trends and Recent Studies on Hybrid Railway Vehicles |journal=Quarterly Report of RTRI |volume=58 |issue=1 |pages=1–5 |doi= 10.2219/rtriqr.58.1_1|doi-access=free }}</ref> [[File:Harima-Shingu Station April 09 by CR 16.jpg|thumb|KiHa 122 series single-car unit at Harima-Shingu Station in April 2009]]
{| class="wikitable" |- ! Designation | cMc |- ! Numbering | KiHa 122-0 |- ! Weight (t) | 40.5 |- ! Capacity<br>Total/seated | 113/33 |}
(Equipped with toilet)
===KiHa 127 series (2-car units)===
{| class="wikitable" |- ! Designation | Mc1 | Mc2 |- ! Numbering | KiHa 127-0 | KiHa 127-1000 |- ! Weight (t) | 38.5 | 37.5 |- ! Capacity<br>Total/seated | 130/41 | 138/51 |}
(KiHa 127-0 is equipped with a toilet.)
==Derivatives== * [[ET122]], single-car DMUs for use on the third-sector [[Echigo Tokimeki Railway Nihonkai Hisui Line]] since March 2015
==References== {{reflist}}
==External links== {{Commons category|JR West Kiha 127|KiHa 122/127}} * [https://web.archive.org/web/20090115200437/http://www.westjr.co.jp/news/newslist/article/1173812_799.html KiHa 122/127 series press release] (JR-West) {{in lang|ja}} * [https://web.archive.org/web/20130217060201/http://railf.jp/car/jr/west/dc-122-127.html JR-West KiHa 122/127 series] (Japan Railfan Magazine) {{in lang|ja}}
{{JR West rolling stock}}
[[Category:Diesel multiple units of Japan|122 series]] [[Category:West Japan Railway Company]] [[Category:Niigata Transys rolling stock]] [[Category:Train-related introductions in 2009]]