E233 series
The E233 series is a commuter and suburban electric multiple unit train type developed by East Japan Railway Company from the earlier E231 series and the E531 series design. The first train was introduced in December 2006 for use on the Chūō Line, followed by the E233-1000 series variant in 2007 for use on the Keihin–Tōhoku and Negishi lines, the E233-3000 series outer-suburban variant in December 2007 for use on the Tōkaidō Main Line, and narrow-bodied E233-2000 series variant for Jōban Line and Tokyo Metro Chiyoda Line inter-running services. Further variants were built for use on the Keiyō Line, Yokohama Line, Saikyō Line, and Nambu Line.
Design
The E233 series, according to the October 2005 press release, features two identical sets of the main equipment in case of failure. This is the first JR East stock to feature such backup measures. The E233 series provides for better accessibility for the disabled, and is designed to be more comfortable to ride overall than previous stock. The height between the platform and the train was reduced from the of the 201 and 209 series to. Seats are wide, compared to the of the 201 series and of the 209 series. For standing passengers the handle straps have been lowered by 50 mm compared to older train models.This stock also features an air filtration system to remove unpleasant smells. It also features liquid crystal display information screens and automatic announcement system similar to those used on the E231 series rolling stock on the Yamanote Line.
The stock is the first JR East stock to use full-colour LEDs for the destination indicators on the sides of the carriages. This is due to the fact that the Chūō Line has numerous types of services, and colour-coding will help passengers board the correct train.
Variants
- E233-0 series: 10-car sets used on the Chūō Rapid, Ōme, Itsukaichi, Hachikō and Fujikyuko lines since 26 December 2006
- E233-1000 series: 10-car sets used on the Keihin–Tōhoku and Negishi lines since 22 December 2007
- E233-2000 series: 10-car sets used on Jōban Line/Tokyo Metro Chiyoda Line inter-running services since 9 September 2009
- E233-3000 series: 10+5-car sets used on Tōkaidō Main Line, Takasaki Line, and Utsunomiya Line outer-suburban services since March 2008, and on Ueno–Tokyo Line and Shōnan–Shinjuku Line through services since March 2015
- E233-5000 series: 10-car sets used on the Keiyō Line since 1 July 2010
- E233-6000 series: 8-car sets used on the Yokohama Line since 16 February 2014
- E233-7000 series: 10-car sets used on the Saikyō Line, Kawagoe Line and Rinkai Line since 30 June 2013, and on Sōtetsu Shin-Yokohama Line, Sōtetsu Main Line since November 2019
- E233-8000 series: 6-car sets used on the Nambu Line since 4 October 2014
- E233-8500 series: One converted former E233-0 series 6-car set used on the Nambu Line from 2017
E233-0 series
An additional five cars were built at JR East's Niitsu factory in 2009 to replace five cars from six-car set Ao661 withdrawn due to accident damage in 2008.
In 2017, six-car set Ao670 was modified to become E233-8500 series set N36 for use on the Nambu Line alongside the fleet of E233-8000 series sets.
Beginning in 2019, toilets are being installed on 58 trains in advance of Green Cars being added to the Chūō Line in 2023.
On 11 June 2020, a new ten-car set T71 was delivered from J-TREC Yokohama as an additional spare train during toilet installation and Green Car modifications.
Interior
Formations
10-car Chūō Line sets
As of 11 June 2020, 43 ten-car sets are based at Toyoda Depot and formed with six motored cars and four non-powered trailer cars.- MoHa E233-200 and MoHa E233-400 cars each have one PS33D single-arm pantograph, and MoHa E233 cars has two PS33D single-arm pantographs.
- Cars 1 and 10 have a wheelchair space.
- Car 4 has a universal design toilet.
- Car 4 is designated as a mildly air-conditioned car.
6+4-car Chūō Line sets
- Car 4 has one PS33D single-arm pantograph, and cars 2 and 8 each have two PS33D single-arm pantographs.
- Cars 1 and 10 have a wheelchair space.
- Car 4 has a universal design toilet.
- Car 4 is designated as a mildly air-conditioned car.
6/4-car Ōme Line and Itsukaichi Line sets
- Car 4 has one PS33D single-arm pantograph, and cars 2 and 8 each have two PS33D single-arm pantographs.
- Cars 1 and 10 have a wheelchair space.
- Car 4 is designated as a mildly air-conditioned car.
Future developments
E233-1000 series
A fleet of 83 ten-car E233 series sets was introduced on the Keihin–Tōhoku and Negishi lines from autumn 2007, replacing the 209 series EMUs previously used from 1993 until 2010. The first set was delivered in August 2007. The main difference over the earlier E233-0 series is the absence of passenger door controls.The first set entered service on 22 December 2007.
Two cars of set 177, KuHa E233-1077 and SaHa E233-1277, were involved in a derailment in February 2014 and were scrapped in December 2016. The remaining eight cars of set 177 were scrapped in April 2018.
Interior
Formation
As of April 2018, 82 ten-car sets were based at Saitama depot and formed with six motored cars and four non-powered trailer cars.E233-2000 series
This is a narrow-bodied variant for Jōban Line and Tokyo Metro Chiyoda Line inter-running services, replacing the 203 series and 207-900 series EMUs previously used. The first ten-car set was delivered to Matsudo Depot from Tokyu Car Corporation in May 2009. It entered service on 9 September 2009.These trains have also been used on inter-running services on Odakyu lines since 2016. In 2017 the last set was delivered. The trains are fitted with emergency doors in the driver's cabin to allow for the evacuation of passengers in the Chiyoda Line's tunnels.
The floor height is lowered to for improved accessibility, compared to for the earlier 203 series and for the 207-900 series and 209-1000 series trains.
Interior
Formation
, the fleet consists of 19 ten-car sets, numbered 1 to 19, based at Matsudo Depot, and formed as shown below, with car 1 at the southern end.Cars 3 and 9 are equipped with one single-arm pantograph. Car 6 is equipped with two.
Build details
The delivery dates for the fleet are as shown below.| Set No. | Manufacturer | Date delivered |
| 1 | Tokyu Car | 20 May 2009 |
| 2 | Tokyu Car | 6 August 2010 |
| 3 | Tokyu Car | 1 September 2010 |
| 4 | Tokyu Car | 29 September 2010 |
| 5 | Tokyu Car | 3 December 2010 |
| 6 | Tokyu Car | 15 December 2010 |
| 7 | Tokyu Car | 22 December 2010 |
| 8 | Tokyu Car | 7 January 2011 |
| 9 | Tokyu Car | 19 January 2011 |
| 10 | Tokyu Car | 23 February 2011 |
| 11 | Tokyu Car | 4 March 2011 |
| 12 | Tokyu Car | 27 April 2011 |
| 13 | Tokyu Car | 10 July 2011 |
| 14 | Tokyu Car | 17 July 2011 |
| 15 | Tokyu Car | 30 July 2011 |
| 16 | Tokyu Car | 28 August 2011 |
| 17 | Tokyu Car | 19 September 2011 |
| 18 | Tokyu Car | 28 September 2011 |
| 19 | J-TREC | 2017 |
E233-3000 series
The E233-3000 sub-series are outer-suburban sets formed as ten-car sets containing two bilevel Green cars and five-car sets. Sets are allocated to Kōzu and Oyama depots for use on Tōkaidō Main Line services between Tokyo and Numazu, as well as Shōnan–Shinjuku Line and Ueno–Tokyo Line through services to and from the Takasaki Line and Utsunomiya Line. The first sets entered service on 10 March 2008, and were introduced to the Shōnan–Shinjuku Line from the start of the new timetable on 14 March 2015.Formations
Early 10-car sets
, 2 ten-car sets are based at Kōzu depot in Kanagawa Prefecture and formed as shown below with six motored cars and four non-powered trailer cars.- Cars 3 and 9 each have one single-arm pantograph, and car 7 has two.
- Cars 1 and 10 have a wheelchair space.
- Cars 1, 5, and 10 each have a toilet.
- Car 8 is designated as a mildly air-conditioned car.
- Cars 4 and 5 are bilevel Green Cars.
Standard 10-car sets
- Cars 7 and 9 each have one single-arm pantograph, and car 3 has two.
- Cars 1 and 10 have a wheelchair space.
- Cars 1, 5, 6, and 10 each have a toilet.
- Car 8 is designated as a mildly air-conditioned car.
- Cars 4 and 5 are bilevel Green Cars.
5-car sets
- Car 13 has two single-arm pantographs.
- Cars 11 and 15 have a wheelchair space.
- Car 11 has a universal design toilet.
Interior
The first 10+5-car E233-3000 series outer suburban set for use on the Tōkaidō Main Line was delivered from the Tokyu Car factory in Yokohama to Kōzu Depot in November 2007. This includes two bilevel Green cars. It entered revenue service on 10 March 2008, and was initially limited to use on the Tōkaidō Main Line between Tokyo and Atami. The second set was delivered in February 2010.
Subsequent sets were delivered to Tamachi Depot from September 2011, entering service from 12 November 2011. These sets incorporate a number of minor changes, including moving the second reserve pantograph from car 7 to car 3, and the addition of a toilet in car 6.
Takasaki-based ten- and five-car sets were introduced on Takasaki Line services between Ueno and Maebashi, replacing 211 series sets, and on Ryōmō Line services from 1 September 2012.
E233-5000 series
These are 10-car and 4+6-car sets for use on the Keiyō Line. The fleet consists of 20 ten-car sets and four 4+6-car sets, with the first sets entering revenue service on 1 July 2010, replacing the 201 series, 205 series, and E331 series EMUs previously used.The first E233-5000 series set, set 501, was delivered from JR East's Niitsu factory on 10 March 2010. In addition to services on the Keiyō Line between Tokyo and, these sets are also used on Sotobō Line through services between Soga and, Uchibō Line through services between Soga and, and on Tōgane Line through services between and.
Formations
10-car sets
, 20 ten-car sets are based at Keiyō Depot and formed with six motored cars and four non-powered trailer cars.- Cars 3 and 9 each have one PS33D single-arm pantograph, and car 5 has two PS33D single-arm pantographs.
- Cars 1 and 10 have a wheelchair space.
- Car 4 is designated as a mildly air-conditioned car.
6+4-car sets
- Car 3 has one PS33D single-arm pantograph, and cars 5 and 9 each have two PS33D single-arm pantographs.
- Cars 1 and 10 have a wheelchair space.
- Car 4 is designated as a mildly air-conditioned car.
Interior
E233-6000 series
These are eight-car sets operated in the Yokohama Line since 16 February 2014. As with the earlier Saikyo Line E233-7000 series variant, the new trains use LED interior lighting.A total of 28 sets were delivered. The first E233-6000 series set, H016, was delivered from the J-TREC Yokohama factory in January 2014. The first set built at the J-TREC Niitsu factory, set H001, was delivered on 22 January 2014.
Interior
Passenger accommodation consists of longitudinal bench seating with individual seat widths of Each car has priority seating at one end, and cars 1 and 8 have a wheelchair space.Formation
As of September 2014, 28 8-car sets are based at Kamakura depot are formed with four motored cars and four non-powered trailer cars.Car 4 has two single-arm PS33D pantographs, and car 7 has one.
Build details
The build details for the fleet are as shown below.| Set No. | Manufacturer | Date delivered |
| H001 | J-TREC, Niitsu | 17 January 2014 |
| H002 | J-TREC, Niitsu | 24 January 2014 |
| H003 | J-TREC, Niitsu | 5 February 2014 |
| H004 | J-TREC, Niitsu | 18 February 2014 |
| H005 | J-TREC, Niitsu | 28 February 2014 |
| H006 | J-TREC, Niitsu | 11 March 2014 |
| H007 | J-TREC, Niitsu | 24 March 2014 |
| H008 | J-TREC, Niitsu | 8 April 2014 |
| H009 | J-TREC, Niitsu | 24 April 2014 |
| H010 | J-TREC, Niitsu | 12 May 2014 |
| H011 | J-TREC, Niitsu | 30 May 2014 |
| H012 | J-TREC, Niitsu | 6 June 2014 |
| H013 | J-TREC, Niitsu | 13 June 2014 |
| H014 | J-TREC, Niitsu | 1 July 2014 |
| H015 | J-TREC, Niitsu | 10 July 2014 |
| H016 | J-TREC, Yokohama | 8 January 2014 |
| H017 | J-TREC, Yokohama | 15 January 2014 |
| H018 | J-TREC, Yokohama | 8 February 2014 |
| H019 | J-TREC, Yokohama | 19 February 2014 |
| H020 | J-TREC, Yokohama | 14 March 2014 |
| H021 | J-TREC, Yokohama | 26 March 2014 |
| H022 | J-TREC, Yokohama | 15 April 2014 |
| H023 | J-TREC, Yokohama | 2 May 2014 |
| H024 | J-TREC, Yokohama | 14 May 2014 |
| H025 | J-TREC, Yokohama | 17 June 2014 |
| H026 | J-TREC, Yokohama | 4 July 2014 |
| H027 | J-TREC, Yokohama | 6 August 2014 |
| H028 | J-TREC, Yokohama | 20 August 2014 |
E233-7000 series
These are ten-car sets operated on Kawagoe Line/Saikyō Line/Rinkai Line services between and since 30 June 2013. A total of 31 ten-car sets were delivered, displacing the fleet of 205 series EMUs previously used. These trains are the first E233 series variant to use LED interior lighting.Seven more sets were delivered in 2019, in preparation for through running services between the Saikyō Line and the Sōtetsu Main Line via the new Sōtetsu Shin-Yokohama Line, bringing the total number of trains to 38 ten-car sets.
Interior
Passenger accommodation consists of longitudinal bench seating with individual seat widths of.Formation
As of 1 January 2020, 38 ten-car sets are based at Kawagoe Depot and formed with six motored cars and four non-powered trailer cars.- Cars 3 and 9 each have one PS33D single-arm pantograph, and car 5 has two PS33D single-arm pantographs.
- Cars 1 and 10 have a wheelchair space.
- Car 9 is designated as a mildly air-conditioned car.
History
E233-8000 series
These are six-car sets introduced on Nambu Line services between and from 4 October 2014. A total of 35 E233-8000 series sets are on order, displacing the previous fleet of 205 series and older 209 series EMUs.Interior
Passenger accommodation consists of longitudinal bench seating throughout, with wheelchair spaces in cars 1 and 6. As with the earlier Yokohama Line E233-6000 series and Saikyo Line E233-7000 series variants, the trains use LED interior lighting.Formation
As of 2015, 35 six-car sets are based at Nakahara depot and formed with four motored cars and two non-powered trailer cars.;Notes:
- Car 4 has one PS33D single-arm pantograph, and car 2 has two single-arm pantographs.
- Cars 1 and 6 have a wheelchair space.
- Car 4 is designated as a mildly air-conditioned car.
History
Build details
The delivery dates for the fleet are as shown below.| Set No. | Manufacturer | Date delivered |
| N1 | J-TREC, Niitsu | 31 July 2014 |
| N2 | J-TREC, Niitsu | 8 August 2014 |
| N3 | J-TREC, Niitsu | 22 August 2014 |
| N4 | J-TREC, Niitsu | 2 September 2014 |
| N5 | J-TREC, Niitsu | 12 September 2014 |
| N6 | J-TREC, Niitsu | 3 October 2014 |
| N7 | J-TREC, Niitsu | 16 October 2014 |
| N8 | J-TREC, Niitsu | 30 October 2014 |
| N9 | J-TREC, Niitsu | 14 November 2014 |
| N10 | J-TREC, Niitsu | 2 December 2014 |
| N11 | J-TREC, Niitsu | 24 December 2014 |
| N12 | J-TREC, Niitsu | 6 January 2015 |
| N13 | J-TREC, Niitsu | 21 January 2015 |
| N14 | J-TREC, Niitsu | 6 March 2015 |
| N15 | J-TREC, Niitsu | 16 March 2015 |
| N16 | J-TREC, Niitsu | 30 March 2015 |
| N17 | J-TREC, Niitsu | 13 April 2015 |
| N18 | J-TREC, Niitsu | 27 April 2015 |
| N19 | J-TREC, Niitsu | 14 May 2015 |
| N20 | J-TREC, Niitsu | 28 May 2015 |
| N21 | J-TREC, Niitsu | 11 June 2015 |
| N22 | J-TREC, Niitsu | 25 June 2015 |
| N23 | J-TREC, Niitsu | 9 July 2015 |
| N24 | J-TREC, Niitsu | 27 July 2015 |
| N25 | J-TREC, Niitsu | 11 August 2015 |
| N26 | J-TREC, Niitsu | 25 August 2015 |
| N27 | J-TREC, Niitsu | 7 September 2015 |
| N28 | J-TREC, Niitsu | 18 September 2015 |
| N29 | J-TREC, Niitsu | 2 October 2015 |
| N30 | J-TREC, Niitsu | 20 October 2015 |
| N31 | J-TREC, Niitsu | 4 November 2015 |
| N32 | J-TREC, Niitsu | 16 November 2015 |
| N33 | J-TREC, Niitsu | 26 November 2015 |
| N34 | J-TREC, Niitsu | 10 December 2015 |
| N35 | J-TREC, Niitsu | 17 December 2015 |
E233-8500 series
In 2017, six-car Itsukaichi Line/Ōme Line set Ao670 was modified and renumbered at Omiya Works to become E233-8500 series set N36 for use on the Nambu Line alongside the fleet of E233-8000 series sets and replacing the last remaining 209 series EMU still in use there. In addition to receiving the Nambu Line livery carried by the E233-8000 series fleet, modifications included adding a WiMAX antenna and replacing the original 15-inch LCD passenger display screens with 17-inch screens. Set N36 entered service on the Nambu Line on 15 March 2017.Formation
As of March 2017, 1 six-car set is based at Nakahara depot and formed with four motored cars and two non-powered trailer cars.- Car 4 has one PS33D single-arm pantograph, and car 2 has two single-arm pantographs.
- Car 1 has a wheelchair space.
- Car 4 is designated as a mildly air-conditioned car.
Accidents
E233 series derivatives
- E129 series, an E233 series derivative for use on local services in the Niigata area
- Odakyu 4000 series, an E233-2000 series derivative
- Sotetsu 11000 series, an E233 series derivative
- Toei 10-300 series, an E233 series derivative