Tokyu 9000 series

Tokyu 9000 series
Set 9009 on the Oimachi Line in December 2021
In service	1986 – present
Manufacturer	Tokyu Car Corporation
Constructed	1986–1991
Entered service	9 March 1986
Refurbished	2004 – present
Number built	117 vehicles (15 sets)
Number in service	75 vehicles (15 sets)
Formation	5 (formerly 8) cars per trainset
Fleet numbers	9001–9015
Operators	Tokyu Corporation Future: Seibu Railway
Depots	Motosumiyoshi (1986–2013)[1] Nagatsuta (1988–present)[2]
Lines served	OM Tokyu Oimachi Line (1988–present) TY Tokyu Toyoko Line (1986–2013) Minatomirai Line (2004–2013)
Specifications
Car body construction	Stainless steel
Car length	20 m (65 ft 7 in)
Width	2.8 m (9 ft 2 in)
Doors	4 pairs per side
Traction system	Variable frequency (GTO)
Power output	170 kW per motor[3]
Electric system(s)	1,500 V DC overhead
Current collector(s)	Pantograph
Track gauge	1,067 mm (3 ft 6 in)

The Tokyu 9000 series (Japanese: 東急9000系, Hepburn: Tōkyū 9000-kei) is a Japanese commuter electric multiple unit (EMU) train type operated by the private railway operator Tokyu Corporation in the Tokyo area of Japan. Introduced into service in March 1986, 14 eight-car sets and a five-car set were built between 1986 and 1991 by Tokyu Car Corporation for use on the Tokyu Toyoko and Oimachi lines. Between 2009 and 2013, the 9000 series sets allocated to Toyoko Line operations were transferred to the Oimachi Line.

Design

Cars are 20 metres (66 ft) long, 2.8 m (9 ft 2 in) wide, and have four pairs of doors per side. While they retain the stainless steel bodies used by older Tokyu train types, they have an offset front-end door. In addition, the 9000 series was the first train type to use variable-frequency drive (more commonly referred to as VVVF) technology from new.[4][5] Since its introduction in 1986, all subsequent Tokyu train types would implement the technology.[6]

The design of the 9000 series was the basis for the later Tokyu 1000 series[7] and 2000 series train types.[8]

Formations

Toyoko Line

The Toyoko Line fleet consisted of 14 eight-car sets, formed as follows.[1]

	← ShibuyaMotomachi-Chukagai →
Designation	KuHa 9000 (Tc2)	DeHa 9200 (M)	SaHa 9700 (T2)	DeHa 9300 (M)	SaHa 9800 (T1)	DeHa 9400 (M)	DeHa 9600 (M0)	KuHa 9100 (Tc1)
Numbering	9001 : 9006	9201 : 9206	9701 : 9706	9301 : 9306	9801 : 9806	9401 : 9406	9601 : 9606	9101 : 9106
	9008 : 9015	9208 : 9215	9708 : 9715	9308 : 9315	9808 : 9815	9408 : 9415	9608 : 9615	9108 : 9115

• The motored cars were each fitted with one lozenge-type pantograph.[1]

Oimachi Line

Oimachi Line sets are formed as follows.[2]

	← MizonokuchiOimachi →
Car No.	5	4	3	2	1
Designation	KuHa 9000 (Tc2)	DeHa 9200 (M)	DeHa 9400 (M)	DeHa 9600 (M)	KuHa 9100 (Tc1)
Wheel arrangement (AAR)	2-2	B-B	B-B	B-B	2-2
Numbering	9001 : 9015	9201 : 9215	9401 : 9415	9601 : 9615	9101 : 9115

• Cars 2, 3, and 4 are each fitted with one single-arm pantograph.

Interior

Passenger accommodation consists primarily of longitudinal seating. Priority seating is composed of transverse seating bays.[9]

• 
  Interior view
• 
  Priority seating

History

The 9000 series fleet consists of 117 vehicles which were built by Tokyu Car Corporation. Construction commenced in 1986 and continued until 1991. The vehicles were initially formed into 14 eight-car sets and a five-car set, numbered 9001 to 9015. The train type first entered service on the Tokyu Toyoko Line in March 1986, and the sole five-car set (9007) was introduced on the Tokyu Oimachi Line in 1988.[1][2]

Refurbishment

From fiscal 2004,[10] the 9000 series fleet underwent a programme of interior refurbishment. The programme included the removal of intermediate partitions in favor of stanchion poles for seven-person seats, installation of onboard passenger information displays, and replacement of the original mixture of brown and orange seat moquette. The seat backs received patterned moquette, whereas the seats received plain red moquette.[9]

• 
  The interior of a 9000 series set in as-built condition
• 
  The interior of a refurbished 9000 series set

Transfer to the Tokyu Oimachi Line

5-car set 9007 with Oimachi Line-colored front-end band, March 2008

Set 9007 was the only 9000 series trainset on the Oimachi Line until July 2009, when eight-car set 9002 was transferred from Motosumiyoshi depot to Nagatsuta depot for use on the line. It was shortened to a five-car formation, and its solid-red front-end bands were replaced with ones with a red-to-orange gradient.[11] The rest of the fleet was transferred and modified as such from then, with the last of these sets—9001, 9005, and 9010—being withdrawn from Toyoko Line operations between 14 and 15 March 2013.[12] They were transferred to Nagatsuta shortly thereafter.[13]

• 
  8-car set 9001 with a headmark commemorating its final run on the Toyoko Line, February 2013

Future replacement and transfer to Seibu Railway

In May 2024, Tokyu Railway announced that as part of its Fiscal Year 2024 capital investment plan, the 9000 series, together with the Tokyu 9020 series, is scheduled to be replaced with a new fleet of rolling stock based on the Tokyu 6020 series.[14]

On 26 September 2023, it was announced that Tokyu Railway would be transferring over a number of 9000 series sets to the Seibu Railway, together with some Odakyu 8000 series sets from Odakyu Railway.[15][16] The 9000 series is expected to enter service with Seibu from Fiscal Year 2025 onwards and the transfer is expected to be completed by Fiscal Year 2029. Seibu announced that these sets will be used on branch lines such as the Tamako line, Tamagawa line, Chichibu line and the Sayama line.

Special liveries

A 9000 series set is due to receive a special livery to commemorate the 100th anniversary of Tokyu Corporation's founding.[17] The set is due to enter service with the commemorative livery on 29 April 2022.[18]

References

1. "知識の倉 別館-東急電鉄 元住吉検車区編成表" [Tokyu Corporation Motosumiyoshi Inspection Zone Organization Table]. formation.g1.xrea.com. Archived from the original on 14 January 2022. Retrieved 14 January 2022.
2. "知識の倉 別館-東急電鉄 長津田検車区編成表" [Tokyu Corporation Nagatsuta Inspection Zone Organization Table]. formation.g1.xrea.com. Archived from the original on 14 January 2022. Retrieved 14 January 2022.
3. Abbott, James, ed. (1993). Jane's World Railways 1993-94 (35th ed.). Jane's Information Group Ltd. p. 472. ISBN 0-7106-1082-3.
4. "Tokyu 9000 Series". All About Japanese Trains. Archived from the original on 17 February 2022. Retrieved 17 February 2022.
5. "鉄道写真コレクション(77) 東急東横線の9000系 - 東急1000系&2000系のベースとなった車両". Mynavi News (in Japanese). Mynavi Corporation. 21 January 2013. Archived from the original on 17 February 2022. Retrieved 17 February 2022.
6. 小佐野 景寿 (1 June 2019). "ステンレス電車の一時代を築いた東急の｢名車｣ (Page 3)". Toyo Keizai Online (in Japanese). Archived from the original on 12 June 2020. Retrieved 17 February 2022.
7. 私鉄車両年鑑 2013: 大手15社営業用車両完全網羅 私鉄車両年鑑2013 [Japan Private Railways Annual 2013]. Tokyo, Japan: Ikaros Publications Ltd. 20 March 2013. p. 171. ISBN 978-4-86320-693-9.
8. 私鉄車両編成表 2012 [Private Railway Rolling Stock Formations - 2012]. Japan: JRR. July 2012. p. 68. ISBN 978-4-330-29911-2.
9. "９０００系室内のリニューアルを開始いたしました。" [9000 series interior renewal work begins]. Railfan Tokyu. Japan: Tokyu Corporation. Archived from the original on 7 March 2005. Retrieved 15 January 2022.
10. "２００４年度車両改造計画について。". Railfan Tokyu. Archived from the original on 21 September 2005. Retrieved 21 January 2022.
11. "東急9000系9002編成が試運転を実施" [Tokyu 9000 series set 9002 on trial operation]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 9 July 2009. Archived from the original on 14 January 2022. Retrieved 14 January 2022.
12. "東横線から9000系が姿を消す" [9000 series disappears from the Toyoko Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 16 March 2013. Archived from the original on 14 January 2022. Retrieved 14 January 2022.
13. "東急9000系9001編成が長津田検車区へ" [Tokyu 9000 series set 9001 to Nagatsuta]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 2 May 2013. Archived from the original on 14 January 2022. Retrieved 14 January 2022.
14. "東急，2024年度の設備投資計画を発表" [Tokyu announces capital investment plan for 2024]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 14 May 2024. Retrieved 15 May 2024.
15. "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 take ownership of Tokyu 9000 Series and Odakyu 8000 series cars]. Japan Railfan Magazine Online (in Japanese). Archived from the original on 26 September 2023. Retrieved 26 September 2023.
16. Kinoshita, Kenji (26 September 2023). "西武鉄道「サステナ車両」東急電鉄9000系＆小田急電鉄8000形を譲受" [Acquisition of Tokyu 9000 Series and Odakyu 8000 Series Cars by Tokyu Railways]. Mynavi Corporation (in Japanese). Archived from the original on 26 September 2023. Retrieved 26 September 2023.
17. "特別企画列車「東急グループ100周年トレイン」を運転" [Tokyu to operate special 100th anniversary trains]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 29 March 2022. Retrieved 29 March 2022.
18. "「東急グループ100周年トレイン」目黒線3020系ラッピング車両公開" ["Tokyu Group 100th Anniversary Train"-wrapped Meguro Line 3020 series released]. Mynavi News (in Japanese). Mynavi Corporation. 10 April 2022. Retrieved 10 April 2022.