# 321 series

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Japanese train type

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321 series 321 series set D11 in February 2021 In service 2005–present Manufacturer Kinki Sharyo Built at Higashiōsaka Replaced 201 series, 205 series, 207 series (set Z16) Constructed 2005–2007 Entered service 1 December 2005 Number built 273 vehicles (39 sets) Formation 7 cars per trainset Fleet numbers D1–D39 Operator JR-West Depot Aboshi Lines served A Tōkaidō Main Line A Sanyo Main Line B Kosei Line G Fukuchiyama Line H JR Tōzai Line H Katamachi Line Q Yamatoji Line Specifications Car body construction Stainless steel Train length 136.600 m (448 ft 2.0 in) Car length 19,550 mm (64 ft 2 in) (end cars)[1] 19,500 mm (64 ft 0 in) (intermediate cars) Width 2,950 mm (9 ft 8 in)[1] Height 3,630 mm (11 ft 11 in)[1] Doors 4 pairs per side Maximum speed 120 km/h (75 mph) Weight 232.8 t (229.1 long tons; 256.6 short tons)[1] Traction system Variable frequency (2-level IGBT)[1] Power output 270 kW (362 hp) Acceleration 2.5 km/(h⋅s) (1.6 mph/s) Deceleration 4.2 km/(h⋅s) (2.6 mph/s) (emergency) Electric system 1,500 V DC overhead[1] Current collection WPS27D scissors-type pantograph Bogies WDT63 (powered), WTR246/WTR246A (trailer) Braking systems Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake Safety systems ATS-SW, ATS-P Track gauge 1,067 mm (3 ft 6 in)

The **321 series** (321系, *321-kei*) is a DC [electric multiple unit](/source/Electric_multiple_unit) (EMU) commuter train type operated by [West Japan Railway Company](/source/West_Japan_Railway_Company) (JR-West) in the [Kansai Region](/source/Kansai_region) of Japan.

## Overview

The 321 series was developed from the earlier [207 series](/source/207_series_(JR_West)) to replace the ageing [201 series](/source/201_series) and [205 series](/source/205_series) trains on the [Tōkaidō Main Line](/source/T%C5%8Dkaid%C5%8D_Main_Line).[2] One 321 series set also replaced the 207 series (set Z16) withdrawn due to collision damage sustained in the [Amagasaki derailment](/source/Amagasaki_derailment) of 25 April 2005.

## Operations

The 321 series share the same assignments as their [207 series](/source/207_series_(JR_West)) counterparts.[3][4] All 39 sets are allocated to Aboshi depot.

- [Tōkaidō Main Line](/source/T%C5%8Dkaid%C5%8D_Main_Line) and [Sanyō Main Line](/source/San'y%C5%8D_Main_Line): [Yasu](/source/Yasu_Station_(Shiga)) – [Kakogawa](/source/Kakogawa_Station)

- [Fukuchiyama Line](/source/Fukuchiyama_Line): [Osaka](/source/Osaka_Station) – [Sasayamaguchi](/source/Sasayamaguchi_Station)

- [JR Tōzai Line](/source/JR_T%C5%8Dzai_Line) and [Katamachi Line](/source/Katamachi_Line): [Amagasaki](/source/Amagasaki_Station_(JR_West)) – [Kizu](/source/Kizu_Station_(Kyoto))

- [Osaka Higashi Line](/source/Osaka_Higashi_Line) and [Kansai Main Line](/source/Kansai_Main_Line) ([Yamatoji Line](/source/Yamatoji_Line)) (until 17 March 2023)

## Formation

Car No. 1 2 3 4 5 6 7 Designation M'c M T M' M M' Mc Numbering KuMoHa 320 MoHa 321 SaHa 321 MoHa 320 MoHa 321 MoHa 320 KuMoHa 321 Capacity 142 156 156 156 156 156 142 Weight 35.1 t 34.1 t 27.3 t 33.3 t 34.1 t 33.3 t 35.6 t

KuMoHa 321 and MoHa 321 cars each have two scissors-type pantographs.

## Interior

		- Original interior style in June 2010

		- Interior following changes to seat covers and hanging straps, December 2021

		- Priority seating and free space, December 2021

		- LCD passenger information display

## References

- JR全車両ハンドブック2006 (JR Rolling Stock Handbook 2006). Japan: Neko Publishing. 2006.

- JR電車編成表 '07冬号 (JR EMU Formations – Winter 2007). Japan: JRR. December 2006. [ISBN](/source/ISBN_(identifier)) [978-4-88283-046-7](https://en.wikipedia.org/wiki/Special:BookSources/978-4-88283-046-7).

1. ^ [***a***](#cite_ref-toyodenki_1-0) [***b***](#cite_ref-toyodenki_1-1) [***c***](#cite_ref-toyodenki_1-2) [***d***](#cite_ref-toyodenki_1-3) [***e***](#cite_ref-toyodenki_1-4) [***f***](#cite_ref-toyodenki_1-5) ["Electric Equipment of Series 321 Train"](https://www.toyodenki.co.jp/technical-report/pdf/giho112/s11232.pdf) (PDF). *toyodenki.co.jp* (in Japanese). October 2005. [Archived](https://web.archive.org/web/20171224213624/https://www.toyodenki.co.jp/technical-report/pdf/giho112/s11232.pdf) (PDF) from the original on 24 December 2017. Retrieved 8 December 2021.

1. **[^](#cite_ref-2)** ["321系通勤形直流電車の新製投入"](http://www.westjr.co.jp/news/newslist/article/050708a.html) [Introducing a new 321 series commuter DC train]. *westjr.co.jp* (in Japanese). 8 July 2005. [Archived](https://web.archive.org/web/20050830012749/http://www.westjr.co.jp/news/newslist/article/050708a.html) from the original on 30 August 2005. Retrieved 8 December 2021.

1. **[^](#cite_ref-3)** *JR電車編成表* [*JR train organization table*] (in Japanese). Japan: 交通新聞社. 16 November 2016. p. 178. [ISBN](/source/ISBN_(identifier)) [9784330737164](https://en.wikipedia.org/wiki/Special:BookSources/9784330737164).

1. **[^](#cite_ref-4)** 柴田, 東吾 (January 2015). "JR西日本207系の歩みと現状" [Railway Fan]. *鉄道ジャーナル* (in Japanese). **579**: 93.

## External links

Wikimedia Commons has media related to [JR West 321](https://commons.wikimedia.org/wiki/Category:JR_West_321).

- [Kinki Sharyo information](http://www.kinkisharyo.co.jp/pdf/gihou/KSW12/KSW12_p40-43.pdf) [Archived](https://web.archive.org/web/20090317224741/http://www.kinkisharyo.co.jp/pdf/gihou/KSW12/KSW12_p40-43.pdf) 17 March 2009 at the [Wayback Machine](/source/Wayback_Machine) (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 [321 series](https://en.wikipedia.org/wiki/321_series) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/321_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.