# 63 series > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/63_series > Markdown URL: https://mediated.wiki/source/63_series.md > Source: https://en.wikipedia.org/wiki/63_series > Source revision: 1339951581 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Japanese electric multiple unit train type This article needs more citations. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "63 series" – news · newspapers · books · scholar · JSTOR (July 2015) (Learn how and when to remove this message) 63 series a 63 series EMU on Numazu Station in 1946 In service 1944–1963 Manufacturers JNR, Kawasaki Sharyo, Kinki Sharyo, Nippon Sharyo, Tanaka Sharyo Built at Ōi, Ōmiya Constructed 1944–1950 Number built 688 vehicles Number preserved 1 vehicle (as of April 2011) Operators JGR (1944-1949) JNR (1949-1963) Kinki Nippon Railway (20 vehicles) Nagoya Railroad (20 vehicles) Nankai Railway (20 vehicles) Odakyu Electric Railway (20 vehicles) Sagami Railway (10 vehicles) Sanyo Electric Railway (14 vehicles) Tobu Railway (40 vehicles) Line served Various Specifications Car body construction Steel aluminium alloy (MoHa 63900-63902, SaHa 78200-78202) Traction system Resistor control Traction motors MT30 (-1948) MT40A & MT40B (1948-) Transmission Cam shaft Electric system 1,500 V Bogies DT12 (TR25), DT13, DT14, DT15 Track gauge 1,067 mm (3 ft 6 in) 1,435 mm (4 ft 8+1⁄2 in)(Sanyo Electric Railway) The **63 series** (63系) (and its generic offshoots) was a [commuter](/source/Commuter_train) [electric multiple unit](/source/Electric_multiple_unit) operated by [Japanese Government Railways](/source/Japanese_Government_Railways) (JGR) and [Japanese National Railways](/source/Japanese_National_Railways) (JNR). The cars that made up the 63 series were numbered as MoHa 63, SaHa 78 and KuHa 79. ## Background The 63 series was originally introduced in 1944 as a means of transporting increasing number of workers commuting to factories of arms and other industries. Between 1944 and 1945, very few of these trains were in production, therefore postwar construction of these trains increased dramatically. These trains had brown, steel bodies. The cars were designed under the overall goal of mass transportation amid the serious shortage of supply in the wartime. This resulted in long body (20 meters (65 ft 7 in)), many doors (four per side), less seating, lack of ceiling and new design of side windows (consisting of three frames: only upper and lower frames can be opened).[1] ### Postwar variants In 1946, [Kawasaki Heavy Industries](/source/Kawasaki_Heavy_Industries) began further production of the 63 series trains. This version had an aluminium alloy body instead of the steel body in war-time 63 series trains. Interior flooring was wood, luggage racks were installed, and seats were upholstered. However, the aluminium alloy used in exterior construction was easily prone to corrosion and the electrical systems were also prone to short-circuiting.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*] - a rendered reconstruction picture of 63 series sets made from steel (on the left) and from aluminium alloy (on the right) As a result of the loss of railways and rolling stock during [World War II](/source/World_War_II) to supply steel for the war effort, demand for railway transportation was so great that some 63 series trains (120 vehicles) had to be supplied to private railway operators in Japan. Examples were [Tobu Railway](/source/Tobu_Railway) (40 vehicles), [Kinki Nippon Railway](/source/Kinki_Nippon_Railway) (20 vehicles, classified as MoHa 1501) and [Nagoya Railroad](/source/Nagoya_Railroad) (20 vehicles, classified as 3700 series).[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*] ## Later years The effects of substandard construction on the 63 series were already noticeable by the 1950s. Worn-out bodies made the trains look ugly and the effects of short-circuit was shown in the [Sakuragichō train fire](/source/Sakuragich%C5%8D_train_fire) that happened on the Keihin Line (now [Negishi Line](/source/Negishi_Line)) on April 24, 1951, by which 92 people were injured and 106 were killed. The three-frame windows with small opening prevented passengers evacuation from the fire.[1] The 63 series trainsets were also easily prone to accidents, and a lot of train crashes, derailments and incidents happened in JNR-managed railways and private railways. The [Mitaka incident](/source/Mitaka_incident) of 1949 was also caused by an unmanned 63 series trainset. In 1954, the successor to the 63 series, the [72 series](/source/72_series), was introduced. Despite (originally) having exactly the same design as the 63 series, the 72 series had a much better quality of construction and served as a model for all future commuter trains in Japan, including the [101](/source/101_series) and [103 series](/source/103_series). From 1963 onwards, remaining 63 series trainsets were retrofitted and integrated into the 72 series trainsets. ## Preserved examples Preserved MoHa 63638 at [SCMaglev and Railway Park](/source/SCMaglev_and_Railway_Park), Nagoya MoHa 63638 is preserved at the [SCMaglev and Railway Park](/source/SCMaglev_and_Railway_Park) in Nagoya. It was built in 1947 by Kawasaki Sharyo, and was later renumbered KuMoYa 90005 as a non-revenue earning car, before being stored at JR Central's Hamamatsu Works.[2][3] ## References Wikimedia Commons has media related to [JNR 63](https://commons.wikimedia.org/wiki/Category:JNR_63). 1. ^ [***a***](#cite_ref-Nakagawa_1-0) [***b***](#cite_ref-Nakagawa_1-1) Nakagawa, Kōichi. 桜木町事故とモハ63形のかかわり [Relationships between Sakuragichō Accident and Type MoHa 63]. *The Railway Pictorial* (in Japanese) (756, January 2005): 64. 1. **[^](#cite_ref-dj324_2-0)** "「リニア・鉄道館」ファーストガイド" ["SCMaglev and Railway Park" First Guide]. *Tetsudō Daiya Jōhō Magazine*. **40** (324): 32. April 2011. 1. **[^](#cite_ref-railfan601_3-0)** "リニア・鉄道館 開館" [SCMaglev and Railway Park opens]. *[Japan Railfan Magazine](/source/Japan_Railfan_Magazine)*. **51** (601): 70. May 2011. v t e Electric multiple units of Japanese National Railways DC commuter/suburban 12 63 70 72 101 103 105 111 113 115 117 119 121 123 201 203 205 207 211 213 301 DC express/limited express 52 80 151 153 155 157 159 161 165 167 169 181 183 185 187 189 381 AC/DC commuter/suburban 401 403 411 413 415 417 419 421 423 AC/DC express/limited express 451 453 455 457 471 473 475 481 483 485 487 489 581 583 AC commuter/suburban 711 713 715 717 AC limited express 781 Non-revenue/experimental 141 143 145 147 191 193 443 495 591 791 This list shows all JNR EMUs, both active and withdrawn. Shinkansen types are omitted. --- Adapted from the Wikipedia article [63 series](https://en.wikipedia.org/wiki/63_series) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/63_series?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.