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321 series

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321 series
321 series set D11 in February 2021
In service2005–present
ManufacturerKinki Sharyo
Built atHigashiōsaka
Replaced201 series, 205 series, 207 series (set Z16)
Constructed2005–2007
Entered serviceDecember 2005
Number built273 vehicles (39 sets)
Formation7 cars per trainset
Fleet numbersD1–D39
OperatorsJR-West
DepotsAboshi
Lines servedTōkaidō Main Line, Sanyō Main Line, Kosei Line, Fukuchiyama Line, JR Tōzai Line, Katamachi Line, Osaka Higashi Line, Yamatoji Line
Specifications
Car body constructionStainless steel
Train length136,600 mm (448 ft 2 in)
Car length19.55 m (64 ft 2 in) (end cars)[1]
19.5 m (64 ft 0 in) (intermediate cars)
Width2,950 mm (9 ft 8 in)[1]
Height3,630 mm (11 ft 11 in)[1]
Doors4 pairs per side
Maximum speed120 km/h (75 mph)
Weight232.8 t (513,236 lb)[1]
Traction systemVariable frequency (2-level IGBT)[1]
Power output270 kW (362 hp)
Acceleration2.5 km/(h⋅s) (1.55 mph/s)
Deceleration4.2 km/(h⋅s) (2.61 mph/s) (emergency)
Electric system(s)1,500 V DC overhead[1]
Current collector(s)WPS27D scissors-type pantograph
BogiesWDT63 (powered), WTR246/WTR246A (trailer)
Braking system(s)Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake
Safety system(s)ATS-SW, ATS-P
Track gauge1,067 mm (3 ft 6 in)

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

Overview

The 321 series was developed from the earlier 207 series to replace the ageing 201 series and 205 series trains on the Tōkaidō Main Line.[2] One 321 series set also replaced the 207 series (set Z16) withdrawn due to collision damage sustained in the Amagasaki derailment of 25 April 2005.

Operations

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

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 142 156 142
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
    Original interior style in June 2010
  • Interior following changes to seat covers and hanging straps, December 2021
    Interior following changes to seat covers and hanging straps, December 2021
  • Priority seating and free space, December 2021
    Priority seating and free space, December 2021
  • LCD passenger information display
    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 978-4-88283-046-7.
  1. ^ a b c d e f "Electric Equipment of Series 321 Train" (PDF). toyodenki.co.jp (in Japanese). October 2005. Archived (PDF) from the original on 24 December 2017. Retrieved 8 December 2021.
  2. ^ "321系通勤形直流電車の新製投入" [Introducing a new 321 series commuter DC train]. westjr.co.jp (in Japanese). 8 July 2005. Archived from the original on 30 August 2005. Retrieved 8 December 2021.
  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 9784330737164.
  4. ^ 柴田, 東吾 (January 2015). "JR西日本207系の歩みと現状" [Railway Fan]. 鉄道ジャーナル社 (in Japanese). 579: 93.
Wikimedia Commons has media related to JR West 321.
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