Seibu 8000 series
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| Seibu 8000 series | |
|---|---|
 An 8000 series set in May 2025 | |
| In service | 31 May 2025- |
| Manufacturer | Nippon Sharyo, Kawasaki Heavy Industries, Tokyu Car Corporation (as Odakyu 8000 series) Odakyu Engineering (conversion) |
| Replaced | Seibu 2000 series |
| Constructed | 1985 (as Odakyu 8000 series) 2024– (conversion) |
| Number under construction | 42 vehicles (7 sets) |
| Formation | 6 cars per trainset |
| Capacity | 922 passengers |
| Operators |  Seibu |
| Lines served |  Seibu Kokubunji Line |
| Specifications | |
| Car body construction | Steel |
| Car length | 20,000 mm (65 ft 7 in) |
| Width | 2,900 mm (9 ft 6 in) |
| Height | 4,145 mm (13 ft 7 in) |
| Doors | 4 pairs per side |
| Traction system | Variable frequency (IGBT) |
| Power output | 190 kW x4 per motored car |
| Electric system(s) | 1,500 V DC (overhead) |
| Current collector(s) | Pantograph |
| Braking system(s) | Regenerative braking |
| Track gauge | 1,067 mm (3 ft 6 in) |
The Seibu 8000 series (西武8000系) is a commuter electric multiple unit (EMU) train type operated by the private railway operator Seibu Railway in Japan since end of May 2025.[1]
History
[edit]Background
[edit]On 26 September 2023, Seibu Railway announced that, to replace ageing railcars with DC traction equipment, it would be inheriting approximately 100 variable-frequency-controlled railcars from Tokyu Railways and Odakyu Electric Railway between 2024 and 2029. These cars are according referred to by Seibu as "sustainable trains". Seibu estimated that operating the reused railcars would reduce carbon dioxide (CO2) emissions by 5,700 tonnes per year.[2]
Inheritance by Seibu Railway
[edit]One Odakyu 8000 series 6-car set was transferred to Seibu in May 2024.[3][4] On 26 September of that year, Seibu announced the ex-Odakyu fleet would receive the designation "8000 series" (8000系), inheriting the type's original designation (8000形).[5][6]
Seibu originally intended for the 8000 series to enter service at the end of fiscal 2024;[7] however, their introduction was deferred to 31 May 2025.[8]
Operations
[edit]The 8000 series is used on Kokubunji Line services.[9] A total of seven sets are planned for introduction to replace the 2000 series sets used on the Kokubunji Line.[8]
Formation
[edit]Sets are formed as shown below:[10]
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Designation | Tc1 | M1 | T1 | M3 | M4 | Tc2 |
| Numbering | 8100 | 8200 | 8300 | 8800 | 8900 | 8000 |
| Capacity (total/seated) | 147/45 | 157/54 | 157/54 | 157/54 | 157/54 | 147/45 |
| Weight (t) | 31.0 | 39.8 | 33.6 | 40.3 | 39.3 | 31.2 |
- Cars 2 and 4 have a pantograph.[10]
- Cars 1 and 6 have a wheelchair space.[10]
References
[edit]- ^ "「サステナ車両（8000系）」運行開始が2025年5月末に決定！". 西武鉄道Webサイト (in Japanese). Retrieved 29 January 2025.
- ^ 西武，東急9000系と小田急8000形を「サステナ車両」として譲受 [Seibu to acquire Tokyu 9000 series and Odakyu 8000 series trains as "sustainable vehicles"]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha. 26 September 2023. Retrieved 1 June 2025.
- ^ "小田急8000形が甲種輸送される" [Odakyu 8000 series is transported as Class A]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 19 May 2024. Retrieved 21 May 2024.
- ^ "小田急の車両が西武線に来た！異色の「サステナ車両」第1編成 国分寺線で運行へ". Traffic News (in Japanese). Japan: Mediavague Co., ltd. 20 May 2024. Retrieved 21 May 2024.
- ^ 西武鉄道「8000系」小田急電鉄からの「サステナ車両」デザイン決定 [Seibu Railway unveils design for "8000 series", "sustainable railcar" inherited from Odakyu Railway]. Mynavi News (in Japanese). 26 September 2024. Retrieved 1 June 2025.
- ^ 西武の「サステナ車両」デザイン決定！ 形式は「8000系」！【元小田急8000形】 [Seibu's "Sustainable Car" design unveiled! Model is "8000 series"! (former Odakyu 8000 series)]. RM News (in Japanese). Japan: Neko Publishing. 26 September 2024. Retrieved 1 June 2025.
- ^ 西武鉄道「サステナ車両」8000系が出場、運行開始は2025年5月末に [Seibu Railway 8000 series "Sustainability Train" to enter service at the end of May 2025]. Mynavi News (in Japanese). 7 January 2025. Retrieved 7 January 2025.
- ^ a b 西武8000系が営業運転を開始 [Seibu 8000 series enters revenue service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 2 June 2025. Retrieved 1 June 2025.
- ^ 西武鉄道「8000系」小田急電鉄からの「サステナ車両」デザイン決定 [Seibu Railway unveils design of 8000 series "Sustainability Train" inherited from Odakyu Electric Railway]. Mynavi News (in Japanese). 26 September 2024. Retrieved 30 January 2025.
Seibu Railway trainsets | ||
|---|---|---|
| Commuter EMUs |  | |
| Limited express EMUs | ||
| Future EMUs | ||
| Withdrawn EMUs | ||
| Locomotives | ||
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