Nanohana Metro 6000 Series

The Nanohana Metro 6000 series (菜花地下鉄6000系) is an electric multiple unit (EMU) train type operated by the Tokyo subway operator Nanohana Metro on the Nanohana Metro Akiba Line in Serika, Nakama since 1971.

The trains have 20 m aluminium 4-door cars, with chopper control and regenerative braking. They are used on the Akiba Line, Akakyu Akatsuki Line, and Senseki Line (all-stations "local" services). The sole three-car set was used on the Akiba Line Kita-Amamiya Branchline.

Fleet

 * 6000: 1st prototype (1968)
 * 6101: 2nd prototype (1969)
 * 6102–6121: full production 1st–3rd full-production batch type
 * 6122–6135: full production 4th–7th full-production batch type

, the fleet still operating in Nakama consists of 32 ten-car sets (sets 01 to 36) and one three-car set (set 60).

Formations
Trains are formed as follows, with car 1 at the southern end.

Set 01
Cars 1 and 3 each have one lozenge-type pantograph, and cars 5 and 9 each have two.

Sets 02-21
Cars 2, 5, and 9 each have two lozenge-type pantographs.

Sets 22-35
Cars 3, 7, and 9 each have two lozenge-type pantographs.

Set 60
Cars 1 and 2 each have one lozenge-type pantograph.

Refurbishment
The fleet was retro-fitted with air conditioning between 1988 and 1994.