The is a DC

electric multiple unit An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a numbe ...

(EMU) commuter train type operated by the

private railway A private railway is a railroad run by a private business entity (usually a corporation but not need be), as opposed to a railroad run by a public sector. Japan In Japan, , commonly simply ''private railway'', refers to a public transit railway o ...

operator

Tobu Railway is a Japanese commuter railway and ''keiretsu'' holding company in the Greater Tokyo Area as well as an intercity and regional operator in the Kantō region. Excluding the Japan Railways Group companies, Tobu's rail system is the second longes ...

in Japan since 1981.

Operations

First entering service in 1981 on the

Tobu Tojo Line is a Japanese commuter railway and ''keiretsu'' holding company in the Greater Tokyo Area as well as an intercity and regional operator in the Kantō region. Excluding the Japan Railways Group companies, Tobu's rail system is the second longes ...

, this was the first stainless steel EMU type to be introduced by Tobu. A total of ten 10-car sets were ultimately built for use on through-running services over the

Tokyo Metro Yurakucho Line Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.468 ...

and

Tokyo Metro Fukutoshin Line The , formally the , is a subway line operated by Tokyo Metro in west-central Tokyo and Wako, Saitama, Japan. The newest line in the Tokyo subway network, it opened in stages between 1994 and 2008. On average, the Fukutoshin line carries 362,654 ...

, as well as Tojo Line services between

Ikebukuro is a commercial and entertainment district in Toshima, Tokyo, Japan. Toshima ward offices, Ikebukuro station, and several shops, restaurants, and enormous department stores are located within city limits. It is considered the second largest ...

and Ogawamachi.

Variants

* Prototype set 9101 * Production sets 9102-9108 * 9050 series VVVF sets 9151-9152

Prototype set 9101

Built in October 1981, this was the first stainless steel EMU type to be introduced by Tobu, and featured a bodyline stripe using the same "Royal maroon" colour as previously used on Tobu 1720 series "DRC" trains. Set 9101 was built jointly by three manufacturers, with four cars (9101–9401) built by

Tokyu Car Corporation Tokyu may refer to: * Tokyu Group, a group of companies centered on Tokyu Corporation ** Tokyu Corporation, a Japanese railway company, the largest member and parent company of the group ** Tokyu Car Corporation, a former Japanese railway vehicle m ...

, two cars (9501–9601) by

Fuji Heavy Industries is a Japanese multinational corporation and conglomerate primarily involved in both terrestrial and aerospace transportation manufacturing. It is best known for its line of Subaru automobiles. Founded in 1953, the company was formerly named ( ...

, and four cars (9701–9001) by Alna Koki (now Alna Sharyo). The seats on this set were originally brown, but this was later changed to the standard light green colour.

Formation

The M1 cars are each fitted with one scissors type pantograph.

Production sets 9102-9108

Sets 9102 to 9107 were built in 1987, incorporating a number of minor improvements over the prototype set. Seat width was increased from 425 mm to 450 mm. An additional set, 9108, was built in 1991, based on the 10030 series lightweight body style.

Formation

The M1 cars are each fitted with one single-arm pantograph. File:Tobu-Series9000-9102.jpg, First refurbished set, 9102, June 2021

9050 series VVVF sets

Two 9050 series sets were introduced in December 1994, coinciding with the opening of the "Yurakucho New Line" (now part of the

) between Kotakemukaihara and Ikebukuro. These incorporated further design improvements and changes similar to the 20050 series trains, notably VVVF control, bolsterless

bogies A bogie ( ) (in some senses called a truck in North American English) is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transp ...

, 3-colour

LED A light-emitting diode (LED) is a semiconductor Electronics, device that Light#Light sources, emits light when Electric current, current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy i ...

destination indicators, LED interior passenger information displays, and brown seat

moquette Moquette, derived from the French word for carpet, is a type of woven pile fabric in which cut or uncut threads form a short dense cut or loop pile. As well as giving it a distinctive velvet-like feel, the pile construction is particularly durabl ...

. The LCD passenger information displays were removed in 1999.

Formation

The M5 and M7 cars are each fitted with one single-arm pantograph. File:Tobu 9050 series 9151 Shinrinkoen Depot 19980312.JPG, Set 9151 before refurbishment, March 1998 File:Tobu-Series9050R_9152.jpg, Refurbished set 9152, October 2021

Refurbishment

From April 2007 to 2008, all of the 9000 and 9050 series sets except prototype set 9101 underwent refurbishment ahead of introduction on

inter-running services from June 2008. Refurbishment included totally new interiors and cabs based on the 50070 series design. Externally, single-arm pantographs were fitted, and the destination indicator blinds replaced with full-colour LED displays. Prototype set 9101 was not refurbished due to the different door spacing of this set, making it incompatible with the platform doors on the Fukutoshin Line. This set is restricted to Tōbu Tōjō Line overground duties.

Interior

File:Tobu 9050 MoHa 9251 interior Tobu Tojo Line 20120927.JPG, Interior view of a refurbished 9050 series set, September 2012

References

External links

Tobu 9000 series

(Japan Railfan Magazine) {{DEFAULTSORT:Tobu 9000 Series Electric multiple units of Japan 9000 series Train-related introductions in 1981 Tokyu Car multiple units Alna Koki rolling stock Fuji rolling stock 1500 V DC multiple units of Japan