321 series

321 series
321 series train on a Tōkaidō Main Line service, July 2006
In service	December 2005–
Manufacturer	Kinki Sharyo
Built at	Higashiōsaka
Replaced	201 series, 205 series
Constructed	2005–
Number built	273 vehicles (39 sets)
Formation	7 cars per trainset
Fleet numbers	D1–D39
Operator(s)	JR West
Depot(s)	Aboshi
Line(s) served	Tōkaidō Main Line, Sanyō Main Line, Kosei Line, Fukuchiyama Line, JR Tōzai Line, Katamachi Line, Osaka Higashi Line, Yamatoji Line
Specifications
Car body construction	Stainless steel
Train length	136,600 mm (448 ft 2 in)
Car length	19,550 mm (64 ft 2 in) (end cars) 19,500 mm (64 ft 0 in) (intermediate cars)
Width	2,950 mm (9 ft 8 in)
Height	3,630 mm (11 ft 11 in)
Doors	4 pairs per side
Maximum speed	120 km/h (75 mph)
Weight	232.8 t
Traction system	Variable frequency (2-level IGBT)
Power output	270 kW
Acceleration	2.5 km/h/s
Deceleration	4.2 km/h/s (emergency)
Electric system(s)	1,500 V DC overhead
Current collection method	WPS27D scissors-type pantograph
Bogies	WDT63 (powered), WTR246/WTR246A (trailer)
Braking system(s)	Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake
Safety system(s)	ATS-SW, ATS-P
Track gauge	1,067 mm (3 ft 6 in)

The 321 series (321系) is a commuter electric multiple unit (EMU) 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. One 321 series set also replaced the 207 series (set Z16) withdrawn due to collision damage sustained in the Amagasaki rail crash of 25 April 2005.

Operations

• Tōkaidō Main Line and Sanyō Main Line: Kyoto – Kakogawa
• Fukuchiyama Line: Osaka – Sasayamaguchi
• Kosei Line: Kyoto – Yamashina – Ōmi-Maiko
• JR Tōzai Line and Katamachi Line: Amagasaki – Kizu
• Osaka Higashi Line and Kansai Main Line (Yamatoji Line): Kizu – Nara, Nara – Kyūhōji – Hanaten

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

KuMoHa321 and MoHa321 cars each have two scissors-type pantographs.

Interior

• JRW series321 indise.jpg

  Original interior style, June 2010

• JRW321 renewal inside of train.jpg

  Interior following changes to seat covers and hanging straps, November 2013

• JR-West321(2).jpg

  LCD passenger information display

External links

• Kinki Sharyo information (Japanese)