321 series
Japanese train type
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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.
In service2005–present
ManufacturerKinki Sharyo
Built atHigashiōsaka
Replaced201 series, 205 series, 207 series (set Z16)
| 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 | |
| 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) |
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201 series and 205 series trains on the Tōkaidō Main Line.[2] One 321 series set also replaced the 207 series (set Z16) withdrawn due to collision damage sustained in the Amagasaki derailment of 25 April 2005.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.
- Tōkaidō Main Line and Sanyō Main Line: Yasu – Kakogawa
- Fukuchiyama Line: Osaka – Sasayamaguchi
- JR Tōzai Line and Katamachi Line: Amagasaki – Kizu
- Osaka Higashi Line and Kansai Main Line (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
