| 301 series | |
| Service: | 1966–2003 |
| Manufacturer: | Kawasaki Heavy Industries, Nippon Sharyo |
| Successor: | E231-800 series |
| Yearconstruction: | 1966–1969 |
| Yearscrapped: | 2003 |
| Numberbuilt: | 56 vehicles (8 sets) |
| Numberservice: | None |
| Numberpreserved: | None |
| Formation: | 10 cars per trainset (originally 7 cars) |
| Fleetnumbers: | K1–5 |
| Operator: | JNR (1966–1987) JR East (1987–2003) |
| Depots: | Mitaka |
| Lines: | Chuo-Sobu Line, Eidan Tozai Line |
| Carbody: | Aluminium |
| Carlength: | 20m (70feet) |
| Doors: | 4 pairs per side |
| Maxspeed: | 100km/h |
| Electricsystem: | 1,500 V DC |
| Collectionmethod: | Overhead catenary |
| Safety: | ATS-B/P, ATC |
| Multipleworking: | 103-1200 series |
The was an electric multiple unit (EMU) train type introduced in 1966 by Japanese National Railways (JNR), and later operated by East Japan Railway Company (JR East) on Chuo-Sobu Line and Tozai Line subway through-running services in Tokyo, Japan, until 2003.[1]
Broadly based on the 103 series commuter EMU,[1] the 301 series was designed specifically for use on through-running services with the Eidan Tozai Line (present-day Tokyo Metro Tozai Line) in Tokyo, and was the first aluminium-bodied rolling stock introduced on Japanese National Railways (JNR).[2]
When first delivered, the sets were finished with a clear acrylic paint, giving an unpainted appearance.[1] The sets were subsequently painted in light grey with a yellow bodyside stripe.[1] This was later changed to a light blue ("Blue No. 22") stripe to match the Tōzai Line line colour.[1] [3]
For cost reasons, only 56 vehicles were built, and subsequent rolling stock built for Tozai Line through-running services was conventional steel-bodied 103-1200 series stock.[1]
The 301 series trains were based at Mitaka Depot in Tokyo throughout their service life, and were used on Chūō-Sōbu Line local and Tozai Line subway through-running services.[3]
Following reforming into 10-car sets, the fleet was formed as follows, with car 1 at the Nishi-Funabashi end and car 10 at the Mitaka end. Sets K1 and K2 included former KuHa 301 and KuMoHa 300 driving cars with driving cab equipment removed.[3]
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Designation | Tc | M | M' | M | M'c | Tc | M | M' | M | M'c | |
| Numbering | KuHa 301 | MoHa 301 | MoHa 300 | MoHa 301 | KuMoHa 300 | KuHa 301 | MoHa 301 | MoHa 300 | MoHa 301 | KuMoHa 300 |
Cars 2, 4, 7, and 9 were each equipped with one lozenge-type pantograph.[3]
| Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Designation | Tc | M | M' | M | M' | T | M | M' | M | M'c | |
| Numbering | KuHa 301 | MoHa 301 | MoHa 300 | MoHa 301 | MoHa 300 | SaHa 301-100 | MoHa 301 | MoHa 300 | MoHa 301 | KuMoHa 300 |
Cars 2, 4, 7, and 9 were each equipped with one lozenge-type pantograph. SaHa 301-101 was modified from former MoHa 301-4, and retained the original pantograph mounting points.[3]
Seating consisted of longitudinal bench seating throughout. Compared with the 103 series seating, seat width was increased by to per person.[1]
The 301 series were delivered in 1966 to Mitaka Depot in Tokyo,[1] initially formed as eight 7-car sets.[4] From 1981, the fleet was reformed into 10-car sets with the creation of SaHa 301 trailer cars converted from former MoHa 300 and MoHa 301 motored cars.[1]
As of 1 April 2002, 50 vehicles (5 x 10-car sets) remained in service,[5] but the fleet was subsequently replaced by new E231-800 series EMUs and withdrawn during 2003.[4]
A special Sayonara 301 series train was run by JR East on 3 August 2003.
Driving car KuMoHa 300-4 of set K2 is stored at JR East's Omiya Works, removed in 2017.