| Seibu 6000 series | |
|---|---|
 Refurbished stainless steel set 6114 in October 2021 | |
| In service | 1 June 1992 – present |
| Manufacturer | Tokyu Car Corporation, Hitachi |
| Constructed | 1992–1998 |
| Refurbished | 2006–2010 |
| Number built | 250 vehicles (25 sets) |
| Number in service | 250 vehicles (25 sets) |
| Formation | 10 cars per trainset |
| Fleet numbers |
|
| Operators |  Seibu |
| Depots | Kotesashi, Tamagawajosui |
| Lines served | |
| Specifications | |
| Car body construction | Stainless steel (6101 to 6117); Aluminium (6151 to 6158) |
| Car length | 20,000 mm (65 ft 7 in) |
| Width | 2,800 mm (9 ft 2 in) |
| Doors | 4 pairs per side |
| Maximum speed |
|
| Traction system | Variable frequency (GTO/SiC/IGBT)[1] |
| Power output | 155 kW per motor (GTO) 170 kW per motor (SiC) 190kW per motor (6157) |
| Acceleration | 3.3 km/(h⋅s) (2.1 mph/s) (on Tokyo Metro lines) |
| Electric system(s) | 1,500 V DC (overhead catenary) |
| Current collector(s) | Pantograph |
| Bogies | Bolsterless |
| Braking system(s) | Electronically controlled pneumatic brakes with regenerative braking |
| Safety system(s) | New CS-ATC (beside 6101 and 6102), ATS (all sets) |
| Track gauge | 1,067 mm (3 ft 6 in) |
The Seibu 6000 series (西武6000系) is a Japanese electric multiple unit (EMU) train type operated by the private railway operator Seibu Railway. Twenty-five 10-car sets were manufactured by Tokyu Car Corporation and Hitachi between 1992 and 1998.
Featuring several advances in design, accessibility, and technology over older Seibu Railway sets, the 6000 series was designed for use on through services to the TRTA (now Tokyo Metro) Yurakucho Line and also intended to serve as the basis for future Seibu train types. The train type first entered service on 1 June 1992 on the Seibu Ikebukuro Line and has since been introduced onto other lines, including the Seibu Yurakucho and Shinjuku lines, the Tokyo Metro Fukutoshin Line, and the Tokyu Toyoko Line.