300 Series Shinkansen
JR West 300-3000 series trainset on the Sanyō Shinkansen, October 2008
|In service||1992–16 March 2012|
|Manufacturer||Hitachi, Kawasaki Heavy Industries, Kinki Sharyo, Nippon Sharyo|
|Number built||1,104 vehicles (69 sets)|
|Number in service||None|
|Number preserved||2 vehicles|
|Number scrapped||1,102 vehicles|
|Formation||16 cars per trainset|
|Fleet numbers||J1–J61, F1–F9|
|Capacity||1,323 (200 Green + 1,123 Standard)|
|Operator||JR Central (1992–2012)
JR West (1993–2012)
|Line(s) served||Tōkaidō Shinkansen, Sanyō Shinkansen|
|Car body construction||Aluminium|
|Car length||25,000 mm (82 ft 0 in) (intermediate cars)
26,050 mm (85 ft 6 in) (end cars)
|Width||3,380 mm (11 ft 1 in)|
|Height||4,440 mm (14 ft 7 in)|
|Doors||Two per side|
|Maximum speed||270 km/h (170 mph)|
|Traction system||40 x 300 kW (400 hp)|
|Power output||12 MW (16,000 hp)|
|Acceleration||1.6 km/(h·s) (0.99 mph/s)|
|Electric system(s)||25 kV AC, 60 Hz, overhead catenary|
|Current collection method||Pantograph|
|Safety system(s)||ATC-1, ATC-NS|
|Track gauge||1,435 mm (4 ft 8 1⁄2 in)|
The 300 series (300系) was a Japanese high-speed Shinkansen train type which operated on the Tōkaidō and Sanyō Shinkansen lines in Japan between 1992 and 2012. When first introduced, they were used on the fastest Nozomi services, being capable of 270 km/h (170 mph). As more were delivered (66 trains by 1998) they replaced earlier units on Hikari service and allowed the thus displaced 100 series units to finally in turn displace 0 series units on almost all services.
With the introduction of newer 700 series and N700 series equipment, the 300 series sets were gradually demoted to slower Hikari and Kodama services, and were completely withdrawn from Tōkaidō and Sanyō Shinkansen services by the start of the revised timetable on 17 March 2012.
The front-end styling of these units consisted of a 'curved wedge', replacing the aircraft-style nose-cones of previous Shinkansen trains. The furthest forward point was the very bottom of the pilot. They were painted brilliant white with a medium-thick blue stripe beneath the windows.
They were only formed as sixteen-car sets and had no restaurant cars, though they did originally feature two refreshment counters (later removed).
JR Central J sets 
In December 1998, set J59 was fitted experimentally with new 700 series style single-arm pantographs and fairings to reduce noise and air resistance. Following testing, JR Central subsequently fitted new pantographs to all of its sets, with modifications completed by late 2002.
In October 2004, JR Central announced plans for ride improvement modifications to its 300 series fleet involving the addition of semi-active vibration control units to seven cars out of the total of sixteen in each set (end cars 1 and 16, pantograph cars 6 and 12, and Green cars 8 to 10), and also new non-linear air suspension on all cars in each set. The new secondary suspension offered firmer support against lateral movement. The entire fleet operated by JR Central received the modifications by February 2007.
With the entry into service of new N700 series trains, withdrawals of production 300 series sets began in July 2007 with the withdrawal of set J14.
The 16-car J sets were formed as follows, with car 1 at the Hakata end.
Cars 6 and 12 each had one single-arm pantograph.
JR West 300-3000 series F sets 
Nine 16-car sets operated by West Japan Railway Company (JR West).
These sets were delivered between December 1992 and September 1993.
Withdrawals of the JR West F sets began in July 2011 with the withdrawal of set F5. The last remaining sets were withdrawn by spring 2012 and replaced by nine 700 series "C" sets transferred from JR Central.
The 16-car F sets were formed as follows, with car 1 at the Hakata end.
Cars 6 and 12 each had one single-arm pantograph.
Pre-production 300-9000 series set 
The pre-production unit, J0, numbered in the 300-9000 series, was delivered on 8 March 1990, and underwent extensive testing and endurance running before the start of the new Nozomi services in March 1992. In the early hours of 1 March 1991, this set recorded a speed of 325.7 km/h on the Tōkaidō Shinkansen between Maibara and Kyoto, a Japanese national speed record at the time.
The set was modified to production standards in March 1993, becoming set "J1", but it differed from the production units in a number of ways. Visually, the driving cab had a different windscreen design, different headlight arrangement, and flared side panels over the front bogies. The prototype set was initially fitted with five pantographs, but this was later reduced to two in line with modifications to the production fleet. Limited water tank capacity meant that the unit was not capable of running return trips from Tokyo to Hakata, and was normally restricted to Tokyo to Osaka/Okayama/Hiroshima workings.
From 2001 onwards, this unit was converted for use as a JR Central test train for testing new digital ATC equipment on the Tokaido Shinkansen. It was finally withdrawn in March 2007. All cars except one end car, 322-9001, were cut up.
- January 1988: Development project commenceed.
- 8 March 1990: Pre-production 300-9000 series set (J0) was delivered.
- April 1990: Test running started.
- October 1990: Speed of 303.1 km/h was recorded during test running.
- 1 March 1991: Speed of 325.7 km/h was recorded during test running.
- July 1991: Endurance test running started. (Continued until March 1992.)
- February 1992: First production set (J2) was delivered.
- March 1992: Entry into service on Tokaido Shinkansen Nozomi services running at a maximum speed of 270 km/h.
- June 1992: 300-9000 series set was tested on Sanyo Shinkansen.
- December 1992: First JR West 300-3000 series (F) set was delivered.
- March 1993: Hourly through Nozomi services were introduced between Tokyo and Hakata.
- 10 March 1993: Pre-production set J0 was modified to full-production standard and renumbered J1.
- May 1993: Awarded the Laurel Prize in May 1993.
- April 1994: Sets from J16 onward delivered with regular sliding doors in place of earlier plug doors.
- August 1995: Sets from J30 onward delivered with two pantographs in place of the earlier three. Modifications started on earlier sets to reduce number of pantographs to two.
- March 1996: Maximum speed of Hikari services was raised to 270 km/h.
- October 1998: 300 series production ended.
- September 1999: Modifications started (from set J9) to convert pantographs to single-arm type with shrouds resembling 700 series design.
- December 2001: 300 series removed from regularly scheduled Nozomi services.
- July 2007: First 300 series set (J14) was withdrawn from service.
- July 2011: First JR West F set (F5) was withdrawn from service.
- 16 March 2012: The last remaining sets were withdrawn following their last runs.
Preserved examples 
- 322-9001 (ex-prototype set J1, built 1990 by Hitachi) at the SCMaglev and Railway Park, Nagoya, since March 2011.
- 323-20 (ex-set J21, built 1993 by Nippon Sharyo) at the SCMaglev and Railway Park, Nagoya, since March 2011.
See also 
- "東海道・山陽新幹線から来春３００系が引退します" [300 series to be withdrawn from Tōkaidō and Sanyō Shinkansen by spring 2012]. Press release (in Japanese). Japan: Central Japan Railway Company & West Japan Railway Company. 20 October 2011. Retrieved 16 December 2011.
- "１００系・３００系新幹線が引退 ３月のＪＲダイヤ改定" [100 series & 300 series Shinkansen to be retired in March JR Timetable Changes]. asahi.com (in Japanese). Japan: The Asahi Shimbun Company. 16 December 2011. Retrieved 16 December 2011.
- "東海道新幹線各駅停車 車両編". Japan Railfan Magazine (Japan: Kōyūsha) 43 (506): p.48–68. June 2003.
- "JR東海300系J編成が定期運用から離脱" [JR Central 300 series J sets removed from scheduled services]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 2 February 2012. Retrieved 2 February 2012.
- JR電車編成表 2011夏 [JR EMU Formations - Summer 2011]. Japan: JRR. May 2010. ISBN 978-4-330-21211-1.
- "JR西日本300系F5編成が浜松工場へ" [JR West 300 series set F5 to Hamamatsu Works]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 13 July 2011. Retrieved 15 July 2011.
- プロトタイプの世界 / Prototype World. Japan: Kōtsū Shimbunsha. 2005. pp. 94–95. OCLC 170056962.
- "「リニア・鉄道館」ファーストガイド" ["SCMaglev and Railway Park" First Guide]. Tetsudō Daiya Jōhō Magazine (Japan: Kōtsū Shimbun) 40 (324): p.20–33. April 2011.
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