| Keio 9000 series | |
| Imagealt: | White train with pink and navy stripes |
| Service: | 2001–present |
| Yearservice: | 24 January 2001 |
| Manufacturer: | Nippon Sharyo, Tokyu Car Corporation |
| Replaced: | 6000 series |
| Yearconstruction: | 2000–2009 |
| Numberbuilt: | 264 vehicles (28 sets) |
| Numberservice: | 264 vehicles (28 sets) |
| Formation: | 8/10 cars per trainset |
| Fleetnumbers: |
|
| Capacity: | 141 (end cars), 152 (intermediate cars) |
| Operator: | Keio Corporation |
| Depots: | Takahatafudō and Wakabadai |
| Lines: | |
| Carbody: | Stainless steel |
| Carlength: | 200NaN0 |
| Width: | 28450NaN0 |
| Height: | 41000NaN0 |
| Doors: | 4 pairs per side |
| Maxspeed: | 1100NaN0 on Keio Corporation lines, 750NaN0 on Toei Shinjuku Line |
| Acceleration: | 2.5km/h/s (Keio Line) (Toei Shinjuku Line) |
| Deceleration: | 4km/h/s 4.5km/h/s (emergency) |
| Traction: | Hitachi 2-level VVVF (IGBT switching device) |
| Traction Motors: | Hitachi 3-phase squirrel-cage induction motor |
| Poweroutput: | 1700NaN0 x4 per motored car |
| Electricsystem: | 1,500 V DC |
| Collectionmethod: | Overhead |
| Brakes: | Electronically controlled pneumatic brakes with regenerative braking |
| Safety: | ATC, Digital-ATC |
| Multipleworking: | 7000 series, 6000 series |
The is an electric multiple unit (EMU) train type in Japan, operated by the private railway operator Keio Corporation since 2001 on the Keio Line and its branches in Tokyo and Kanagawa Prefecture.[1]
The 9000 series 8-car sets are used mainly on the Keio Line, the Takao Line, and the Sagamihara Line. These sets are mainly used on Local services during daytime. They are also used on 10-car Special Express and Rapid trains. Sets are coupled to 2-car Keio 7000 series sets to form 10-car trains.[1]
The 9030 series 10-car sets are used primarily on inter-running services to and from the Toei Shinjuku Line.[1]
The front end design is based on the design of the Keio 5000 series. The body is made of stainless steel. While most of the sets were built at Nippon Sharyo, some were built at Tokyu Car Corporation. The front portion is made of steel painted ivory white.
The 9030 series sets differ from the earlier 8-car sets in having UV-cutting glass for the wide windows, eliminating the need for roller blinds, and having full-colour LED destination indicator panels.[1]
As of 1 April 2013, the fleet consists of eight 8-car 9000 series sets and twenty 10-car 9030 series sets.[2]
The 8-car 9000 series sets (9701 to 9708) are formed as shown below, with four motored (M) cars and four non-powered trailer (T) cars, and with car 1 at the western end.[2]
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|---|
| Designation | Tc2 | M2 | M1 | T2 | T1 | M2 | M1 | Tc1 | |
| Numbering | 9750 | 9150 | 9100 | 9550 | 9500 | 9050 | 9000 | 9700 |
The 10-car 9030 series sets (9730 to 9749) are formed as shown below, with five motored (M) cars and five non-powered trailer (T) cars, and with car 1 at the western end.[2]
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Designation | Tc2 | M2 | M1 | T2 | M1 | T1 | M2 | M1 | Tc1 | ||
| Numbering | 9750 | 9250 | 9200 | 9650 | 9550 | 9100 | 9500 | 9050 | 9000 | 9700 | |
Passenger accommodation consists of longitudinal bench seating throughout.[1] Priority seats are provided at the end of each car.[2]
From 1 November 2018, 9000 series set 9731 was wrapped in a pink livery incorporating several Sanrio characters, such as Hello Kitty.[3]