Tokyo Metro 9000 series

The Tokyo Metro 9000 series (東京地下鉄9000系, Tōkyō Chikatetsu 9000-kei) is an electric multiple unit (EMU) train type operated by the Tokyo subway operator Tokyo Metro on the Tokyo Metro Namboku Line in Tokyo, Japan.

History

Prototype

A prototype 4-car set was built by Kawasaki Heavy Industries in 1990 (formed of cars 9101-9201-9301-9801) for testing on the Chiyoda Line prior to the opening of the Namboku Line in 1991.

1st batch

Seating bay at end of 1st-batch car

Full-production 4-car sets 02 to 07 were delivered in 1991 ahead of the Namboku Line opening, followed by an additional set in 1992, set 08, to act as a spare.

The original 4-car sets were reformed as 6-car sets coinciding with the opening of the extension of the line from Yotsuya to Komagome on 26 March 1996. This was achieved by renumbering the centre cars (9200 and 9300) of sets 02, 04, 06, and 08 as 9600 and 9700 cars which were inserted into sets 01, 03, 05, and 07. New-build (2nd batch) intermediate cars (9200-9300-9600-9700) were then inserted into sets 02, 04, 06, and 08. The resulting minor differences led to odd-numbered sets 01 to 07 being classified as "A sets", and even-numbered sets 02 to 08 becoming "B sets".

Formation

The 1st to 3rd batch sets were formed identically as follows.^[1]

1. 9100 (CT1)
2. 9200 (M1') with two pantographs
3. 9300 (M2')
4. 9600 (M1) with two pantographs
5. 9700 (M2)
6. 9800 (CT2)

2nd batch

Four new 6-car sets (09 to 13) plus the four sets of four additional intermediate cars described above were built by Kawasaki Heavy Industries between 1995 and 1996, coinciding with the opening of the extension of the line from Yotsuya to Komagome in March 1996. Floor height was reduced by 5 mm compared with the 1st batch sets from 1,155 mm to 1,150 mm. Seat width was increased from 440 mm to 450 mm.

3rd batch

Two new 6-car sets (14 and 15) were built by Tokyu Car Corporation to coincide with the opening of the extension of the line from Yotsuya to Tameike-Sannō on 20 September 1997. Externally and internally, these were identical to the 2nd-batch trains.

4th batch

Six new 6-car sets (16 to 21) were built by Nippon Sharyo between 1999 and 2000 ahead of the opening of the extension of the line from Tameike-Sannō to Meguro on 26 September 2000. The motored cars 3 (9300) and 4 (9600) in these sets have only one powered bogie, as opposed to two on earlier sets.^[1] Friction stir welding was used in the construction of these sets to produce a more attractive exterior finish.

5th batch

5th-batch set 23 on the Tokyu Meguro Line, July 2009

Two new 6-car sets (22 and 23) entered service from 22 May 2009.^[2] These include a number of design improvements over earlier sets, including a redesigned front end, single-arm pantographs, and improved air-conditioning. The number of motored cars is reduced from four to three per 6-car set, with car 3 (trailer car) numbered in the 9400 series. Car 4 (9600) has both bogies powered.^[1] Seat width is increased 10 mm to 460 mm, and floor height is reduced 10 mm to 1,140 mm.^[3]

Formation

The 5th-batch sets are formed as follows.^[1]

1. 9100 (CT1)
2. 9200 (M1') with one single-arm pantograph
3. 9400 (T)
4. 9600 (M1) with two single-arm pantographs
5. 9700 (M2)
6. 9800 (CT2)

References

External links

Wikimedia Commons has media related to Tokyo Metro 9000 Series.

• Tokyo Metro Namboku Line 9000 series information (Japanese)

Tokyo Metro trainsets Current 01 series 02 series 03 series 05 series 07 series 08 series 1000 series 6000 series 7000 series 8000 series 9000 series 10000 series 13000 series 15000 series 16000 series Former 100 series 300 series 400 series 500 series 900 series 1000 series 1100 series 1200 series 1300 series 1400 series 1500 series 1500N series 1600 series 1700 series 1800 series 1900 series 2000 series 3000 series 5000 series 06 series See also: Tokyo subway rolling stock