Inspection during passenger service
Selected trains carry track-monitoring equipment; this capability must not be attributed to every E131 set.
Regional railways
E131 · Nikkō Line · 日光線
The same series number appears on the Nikkō and Tsurumi lines. JR East designed the E131 for short formations across several regional and suburban routes.
JR東日本
Technical details
| FormationE131 · 相模線 / Sagami | 4 · 2M2T |
|---|---|
| FormationE131 · 房総・鹿島 / Bōsō–Kashima | 2 · 1M1T |
| WidthE131 · 相模線・房総・鹿島 | 2,950 mm |
| ControlE131 · 相模線・房総・鹿島 | SiC · VVVF |
| MotorE131 · 相模線・房総・鹿島 | Fully enclosed induction motor |
| Published maximum speedE131 · 相模線・房総・鹿島 | 110 km/h |
M = motor car; T = trailer. Each row applies to the stated version and source date.
Technical sources
- 相模線E131系車両の概要 · JR東日本 · 2021-09-17 · 別紙2 comparison table
Inside the engineering
Sagami-line four-car E131 specification, September 2021.
| Compressed air | Oil-free scroll compressor. |
|---|---|
| Door mechanism | Electric rack-and-pinion door drive. |
| Auxiliary power | Static inverter auxiliary supply. |
| Monitoring scope | Vehicle-condition monitoring; track-condition monitoring on selected formations. |
Technical sources and page references
- 相模線E131系営業運転開始について
JR東日本横浜支社 · 2021-09-17 · 別紙2 主要諸元・車両の特徴
Seating
- 相模線 · Sagami
- Side-facing benches 460 mm
- 房総・鹿島 · Bōsō / Kashima
- Bench and transverse seating 460 mm
JR East’s comparison gives the same 460 mm seat width for both fleets. The Sagami Line sets use longitudinal seating, while the Bōsō and Kashima sets also offer transverse seats.
Year introduced · 2021
Sources and updates
Checked 2026-11-07