Keikyu 600 series

This article is about the Keikyu rolling stock introduced from 1994. For the Keikyu rolling stock type that used this classification from 1966 until 1986, see Keikyu 700 series (1956).

The Keikyu 600 series (京急600形) is an electric multiple unit (EMU) train type operated by the private railway operator Keikyu on commuter services in the Tokyo area of Japan. First introduced in 1994, a total of eight 8-car sets and six 4-car sets were built by Tokyu Car Corporation and Kawasaki Heavy Industries to replace the ageing 1000 series sets on limited express services.^[1]

Keikyu 600 series
Set 608 in July 2023
In service	1994–present
Manufacturer	Tokyu Car Corporation, Kawasaki Heavy Industries
Replaced	1000 series
Entered service	1994
Refurbished	2009–2014
Number built	88 vehicles (14 sets)
Number in service	88 vehicles (14 sets)
Formation	4/8 cars per trainset
Fleet numbers	601–608 (8-car sets) 651–656 (4-car sets)
Operators	Keikyu
Lines served	KK Keikyu Main Line KK Keikyu Daishi Line A Toei Asakusa Line KS Keisei Main Line KS Keisei Oshiage Line HS Hokuso Line KS Narita Sky Access Line
Specifications
Car body construction	Aluminium
Car length	18,000 mm (59 ft 1 in)
Width	2,830 mm (9 ft 3 in)
Doors	3 pairs per side
Maximum speed	120 km/h (75 mph)
Traction system	Variable frequency (GTO)
Electric system(s)	1,500 V DC (overhead catenary)
Current collector(s)	Pantograph
Track gauge	1,435 mm (4 ft 8+1⁄2 in)

Operations

The 600 series is primarily operated on the Keikyu Main Line. They are also used on inter-running services to the Toei Asakusa Line, Keisei Main Line, Hokuso Line,^[2] and the Narita Sky Access Line.^[3] Four-car sets are occasionally used on the Keikyu Daishi Line.^[4]

Formations

As of 1 April 2016^[update], the fleet consists of eight 8-car sets and six 4-car sets (classified 650 series).^[5]

8-car sets

The eight-car sets 601 to 607 are formed as follows, with six motored (M) cars and two trailer (T) cars.^[5]

Designation	M1c	M2	Tu	Ts	M1'	M2	M1	M2c
Numbering	60x-1	60x-2	60x-3	60x-4	60x-5	60x-6	60x-7	60x-8

• The "x" in the car numbers corresponds to the set number.
• The "M1c" and "M1" cars are each fitted with one lozenge-type pantograph, and the "M1'" car is fitted with two pantographs.^[5]

The eight-car set 608 is formed as follows, with four motored (M) cars and four trailer (T) cars.^[5]

Designation	Muc	T	Tp1	Mu	Ms	T	Tp1	Msc
Numbering	608-1	608-2	608-3	608-4	608-5	608-6	608-7	608-8

The two "Tp1" cars are each fitted with two single-arm pantographs.^[5]

4-car sets

The four-car sets are formed as follows, with two motored (M) cars and two trailer (T) cars.^[5]

Designation	Muc	T	Tp2	Msc
Numbering	65x-1	65x-2	65x-3	65x-4

The "Tp2" car is fitted with two single-arm pantographs.^[5]

Interior

The first batch of sets introduced featured transverse seating bays throughout. While most of the seating was fixed,^[6] some seats were partially retractable.^[3] Later sets featured longitudinal seating. From 2004, the earlier sets were modified with some transverse seating bays replaced by longitudinal seats.^[1]

• 
  Interior view showing transverse seating in September 2010
• 
  Interior view showing longitudinal seating in December 2021
• 
  LCD passenger information display
• 
  Priority seating, August 2014
• 
  Retractable "Twin-gle" seat (left)

Liveries

Set 606 received a special "Blue Sky Train" livery in March 2005^[7] to commemorate the opening of Haneda Airport Terminal 2.^[3]

• 
  Set 601 in original colour scheme in July 1995
• 
  Set 651 in later livery in June 2010
• 
  Refurbished set 601 in October 2020
• 
  Set 606 in "Blue Sky Train" livery in July 2021

Refurbishment

The 600 series underwent refurbishment from August 2009^[8] to March 2014. Modifications included were replacing the wiper cover with a slit of the model number (similar to those found on the 2100 series and N1000 series), narrower front-end skirts, LED side lights, and a pair of LCD information screens above the doorways.^[9][8]