 | This article relies largely or entirely on a single source. (June 2018) |
| Osaka Municipal Subway New 20 series | |
|---|---|
 A line-up of the five different 20 series variants at Midorigi Depot in November 2016 | |
| In service | 1990–present |
| Manufacturer | Alna Kōki, Hitachi Rail Japan, Kawasaki Heavy Industries, Kinki Sharyo, Nippon Sharyo, Tokyu Car Corporation |
| Replaced | 30 series |
| Constructed | 1990–1998 |
| Entered service | 25 April 1990 |
| Refurbished | 2011– |
| Number built | 572 vehicles |
| Number in service | 572 vehicles |
| Formation | 10 cars per trainset (21 series) 6 cars per trainset (22/23/24/OTS series) 4 cars per trainset (25 series) |
| Operators | Osaka Municipal Transportation Bureau (1990–2018) Osaka Metro (2018–present) |
| Depots | Nakamozu (21 series) Dainichi (22 series) Midorigi (23 series) Morinomiya (24/25/OTS series) |
| Lines served | |
| Specifications | |
| Car body construction | Stainless steel |
| Train length | 187.4 m (614 ft 10 in) (21 series) 112.6 m (369 ft 5 in) (22/23/24/OTS series) 75.2 m (246 ft 9 in) (25 series) |
| Car length | 18.9 m (62 ft 0 in) (end cars) 18.7 m (61 ft 4 in) (intermediate cars) |
| Width | 2.89 m (9 ft 6 in) (end cars) 2.88 m (9 ft 5 in) (intermediate cars) |
| Height | 3,745 mm (12 ft 3 in) |
| Doors | 4 pairs of sliding doors per side |
| Maximum speed | 95 km/h (59 mph) (24 series; Kintetsu Keihanna Line) 70 km/h (43.5 mph) (other series) |
| Traction system | Variable-frequency |
| Traction motors | Four 140 kW (188 hp) traction motors per motor car |
| Power output | 560 kW (751 hp) per motor car |
| Acceleration | 3 km/(h⋅s) (1.9 mph/s) (21/24 series) 2.5 km/(h⋅s) (1.6 mph/s) (other series) |
| Deceleration | 3.5 km/(h⋅s) (2.2 mph/s) 4.5 km/(h⋅s) (2.8 mph/s) (emergency) |
| Electric system(s) | 750 V DC |
| Current collector(s) | Third rail contact shoes |
| Braking system(s) | Electric commanding brake with regenerative brake |
| Safety system(s) | WS-ATC (21/22/23/24/OTS series) WS-ATC, CS-ATC, ATO (25 series) TASC (21 series) |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
The Osaka Municipal Subway New 20 series (大阪市交通局新20系) is a rapid transit electric multiple unit (EMU) train type operated by Osaka Municipal Subway in Japan since 1990.