# KiHa 122 series

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Japanese train type

KiHa 122/127 series KiHa 127 series 2-car DMU near Oichi Station in September 2019 Manufacturer Niigata Transys[1] Constructed 2008–2009 Entered service 2009 Number built 19 vehicles 7 × KiHa 122 6 × KiHa 127 Number in service 19 vehicles Formation KiHa 122: Single car unit KiHa 127: 2 cars per unit Capacity KiHa 122: 113 (33 seated) KiHa 127: 268 (92 seated) Operator JR-West Depot Himeji Line served K Kishin Line Specifications Car body construction Stainless steel Car length KiHa 122: 20,440 mm (67 ft 1 in) KiHa 127: 20,270 mm (66 ft 6 in) Width 2,900 mm (9 ft 6 in) Height 4,040 mm (13 ft 3 in) Doors Two pairs per side Maximum speed 100 km/h (62 mph)[2] Prime mover SA6D140HE-2[3] Power output Per engine: 331 kW (444 hp) at 2,100 rpm[3] Transmission Hydraulic HVAC WAU707 ×2 Bogies WDT65 (driving), WTR248 (trailing) Braking systems Engine brake, electronically controlled pneumatic brakes Safety system ATS-SW Track gauge 1,067 mm (3 ft 6 in)

The **KiHa 122 series** (キハ122系, *Kiha-122-kei*) and **KiHa 127 series** (キハ127系, *Kiha-127-kei*) are [diesel multiple unit](/source/Diesel_multiple_unit) (DMU) train types operated by [West Japan Railway Company](/source/West_Japan_Railway_Company) (JR-West) on the [Kishin Line](/source/Kishin_Line) between [Himeji](/source/Himeji_Station) and [Kōzuki](/source/K%C5%8Dzuki_Station). 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.[2] Test-running commenced in late September 2008,[4] with the units entering revenue-earning service from the start of the revised timetable on 14 March 2009.[5]

## Exterior

The body design features improved crash resistance, based on the [223 series](/source/223_series) [electric multiple unit](/source/Electric_multiple_unit) design. The cars use environmentally-friendly diesel engines with reduced [NOx](/source/NOx) and [particulate](/source/Particulate) emissions.[6]

Externally, the units are finished in unpainted metal with thin yellow and red waistline stripes.[4]

		- WTR248 trailer bogie

## Interior

Internally, the cars feature flip-over reversible seating arranged 2+1 abreast. Toilets in both types of train are [wheelchair-accessible](/source/Wheelchair-accessible), and the step between the passenger compartment and station platform has been eliminated.[6]

		- KiHa 127 interior

		- KiHa 127 forward view showing LED fare board for *wanman* driver-only operation

		- KiHa 127 toilet

## Formations

The KiHa 122 single-car units and KiHa 127 two-car units are formed as follows.[7]

### 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.[8]

KiHa 122 series single-car unit at Harima-Shingu Station in April 2009

Designation cMc Numbering KiHa 122-0 Weight (t) 40.5 Capacity Total/seated 113/33

(Equipped with toilet)

### KiHa 127 series (2-car units)

Designation Mc1 Mc2 Numbering KiHa 127-0 KiHa 127-1000 Weight (t) 38.5 37.5 Capacity Total/seated 130/41 138/51

(KiHa 127-0 is equipped with a toilet.)

## Derivatives

- [ET122](/source/ET122), single-car DMUs for use on the third-sector [Echigo Tokimeki Railway Nihonkai Hisui Line](/source/Echigo_Tokimeki_Railway_Nihonkai_Hisui_Line) since March 2015

## References

1. **[^](#cite_ref-railfan20081002_1-0)** [キハ127+キハ122，網干へ回送](http://railf.jp/news/2008/10/02/135100.html) [KiHa 127 & 122 moved to Aboshi]. *Japan Railfan Magazine Online* (in Japanese). Japan: Koyusha Co., Ltd. 2 October 2008. Retrieved 14 March 2012.

1. ^ [***a***](#cite_ref-dj294_2-0) [***b***](#cite_ref-dj294_2-1) JR西日本 キハ１２２形・キハ１２７形を姫新線に導入 [JR-West to introduce KiHa122/127 on Kishin Line]. *Tetsudō Daiya Jōhō magazine*. Vol. 37, no. 294. Japan: Kōtsū Shimbun. September 2008. p. 70.

1. ^ [***a***](#cite_ref-railfan573_3-0) [***b***](#cite_ref-railfan573_3-1) キハ１２２・１２７系 気動車 [KiHa 122/127 series DMU]. *Japan Railfan Magazine*. Vol. 49, no. 573. Japan: Kōyūsha Co., Ltd. January 2009. pp. 68–72.

1. ^ [***a***](#cite_ref-railfan20080922_4-0) [***b***](#cite_ref-railfan20080922_4-1) [キハ127+キハ122が試運転](http://railf.jp/news/2008/09/23/175300.html) [KiHa 125 + KiHa 122 Test run]. *Japan Railfan Magazine Online* (in Japanese). Japan: Koyusha Co., Ltd. 22 September 2008. Retrieved 14 March 2012.

1. **[^](#cite_ref-5)** Yomiuri Shimbun: [新型高速ディーゼル登場姫新線 (15 March 2009)](http://www.yomiuri.co.jp/e-japan/hyogo/news/20090314-OYT8T01130.htm). Retrieved on 18 March 2009 (in Japanese) [*[dead link](https://en.wikipedia.org/wiki/Wikipedia:Link_rot)*]

1. ^ [***a***](#cite_ref-jrwest20080826_6-0) [***b***](#cite_ref-jrwest20080826_6-1) [キハ122、127系気動車の新製投入について](https://web.archive.org/web/20090115200437/http://www.westjr.co.jp/news/newslist/article/1173812_799.html) [Introduction of new KiHa 122/127 series diesel cars]. *Press Release* (in Japanese). Japan: West Japan Railway Company. 26 August 2008. Archived from [the original](http://www.westjr.co.jp/news/newslist/article/1173812_799.html) on 15 January 2009. Retrieved 14 March 2012.

1. **[^](#cite_ref-railfan597_7-0)** Nishiwaki, Kōji (January 2011). JR各社の新世代気動車の現況 JR西日本キハ122・127形 [The Current State of Modern JR DMUs - JR-West KiHa 122/127]. *[Japan Railfan Magazine](/source/Japan_Railfan_Magazine)*. Vol. 51, no. 597. Japan: Kōyūsha Co., Ltd. pp. 108–110.

1. **[^](#cite_ref-8)** Yamamoto, T. (2017). ["Trends and Recent Studies on Hybrid Railway Vehicles"](https://doi.org/10.2219%2Frtriqr.58.1_1). *Quarterly Report of RTRI*. **58** (1): 1–5. [doi](/source/Doi_(identifier)):[10.2219/rtriqr.58.1_1](https://doi.org/10.2219%2Frtriqr.58.1_1).

## External links

Wikimedia Commons has media related to [KiHa 122/127](https://commons.wikimedia.org/wiki/Category:JR_West_Kiha_127).

- [KiHa 122/127 series press release](https://web.archive.org/web/20090115200437/http://www.westjr.co.jp/news/newslist/article/1173812_799.html) (JR-West) (in Japanese)

- [JR-West KiHa 122/127 series](https://web.archive.org/web/20130217060201/http://railf.jp/car/jr/west/dc-122-127.html) (Japan Railfan Magazine) (in Japanese)

v t e Multiple units of West Japan Railway Company Current / active Shinkansen AC EMUs 500 700 N700 N700S W7 Conventional lines (Narrow- gauge) DC EMUs 103 105 113 115 117 123 125 201 205 207 213 221 223 225 227 321 323 271 273 281 283 285 287 289 AC/DC EMUs 521 681 683 DMUs KiHa 40 KiHa 120 KiHa 121/126 [ja] KiHa 122/127 87 KiHa 187 KiHa 189 Non-revenue EMU 923-3000 145 [ja] Diesel KiYa 141 [ja] KiYa 143 Diesel-electric DEC700 DEC741 Retired / withdrawn Shinkansen AC EMUs 0 100 300 Conventional lines DC EMUs KuMoHa 42 [ja] KuMoNi 83 [ja] KuMoHa 84 [ja] 101 211 165 167 183 381 AC/DC EMUs 413 415 419 457 471 475 485 489 583 DMUs KiHa 20 KiHa 30/35 KiHa 33 [ja] KiHa 37 [ja] KiHa 38 KiHa 23/53 [ja] KiHa 52 KiHa 58/28 [ja] KiHa 65 [ja] KiHa 181 Non-revenue EMU 922-20 WIN350 KuMoYa 90 [ja] KuMoYa 91 [ja] KuMoYa 441 [ja] 443 [ja] U@tech (223/213) DMU KiYa 191 [ja]

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Adapted from the Wikipedia article [KiHa 122 series](https://en.wikipedia.org/wiki/KiHa_122_series) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/KiHa_122_series?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.