| E351 series | |
|---|---|
 An E351 series EMU on a Super Azusa service in January 2010 | |
| In service | December 1993 – April 2018 |
| Manufacturer | Hitachi and Nippon Sharyo |
| Replaced | 183 series |
| Constructed | 1993-1996 |
| Entered service | 23 December 1993 |
| Scrapped | 2017–2018 |
| Number built | 60 vehicles (10 sets) |
| Number in service | None |
| Number preserved | None |
| Number scrapped | 60 vehicles (10 sets) |
| Successor | E353 series |
| Formation | 4/8 cars per trainset |
| Fleet numbers | S1–S5, S21–S25 |
| Operators |  JR East |
| Depots | Matsumoto |
| Lines served | Chuo Main Line |
| Specifications | |
| Car body construction | Steel |
| Car length | 20,700–21,680 mm (67 ft 11 in – 71 ft 2 in) |
| Width | 2,843 mm (9 ft 3.9 in) |
| Doors | 2 per side |
| Maximum speed | 130 km/h (81 mph) |
| Traction system | Variable frequency (GTO, IGBT) |
| Power output | 3,600 kW per 12-car formation |
| Electric system(s) | 1,500 V DC overhead |
| Current collector(s) | PS31 single-arm pantograph |
| Bogies | DT62A (motored), TR247 (trailer) |
| Braking system(s) | Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake |
| Safety system(s) | ATS-P, ATS-Ps |
| Track gauge | 1,067 mm (3 ft 6 in) |
The E351 series (E351系) was a tilting electric multiple unit (EMU) train type operated by East Japan Railway Company (JR East) on Chuo Main Line Super Azusa limited express services in Japan from 1993 to 2018. First introduced in December 1993 (initially on Azusa services), a total of 60 vehicles were built, formed as five eight-car main sets (numbers S1 to S5) and five four-car supplementary (numbers S21 to S25) sets.