Seibu 101 series

The Seibu 101 series (西武101系) and New 101 series (新101系) are electric multiple unit (EMU) train types operated by the private railway operator Seibu Railway in Japan.

Lineup of 101 series trains at Yokoze yard on December 9, 2012

Original 101 series

Seibu 101 series
A Seibu 101 series train in December 2012 at Yokoze rail yard
Manufacturer	Seibu Tokorozawa railway works
Constructed	1968–1976 [1]
Entered service	March 5, 1969 [1]
Number built	278 vehicles
Number in service	None
Formation	2/4/6/8 cars per trainset
Operators	Seibu Railway
Specifications
Car length	20,000 mm (65 ft 7 in)
Doors	3 pairs per side[1]
Maximum speed	105 km/h (65 mph)
Traction system	Resistor control
Traction motors	HS-836-Nrb HS-836-Prb
Power output	150 kW (201 hp)[1]
Acceleration	2.3km/h/s
Deceleration	3.5km/h/s (Service) 4.5km/h/s (Emergency)
Electric system(s)	1,500 V DC overhead catenary
Current collection	Pantograph
Safety system(s)	ATS
Track gauge	1,067 mm (3 ft 6 in)

The 101 series began service in 1969, in conjunction with the opening of the Seibu Chichibu Line.^[2]

New 101 series and 301 series

Seibu New 101 series
A Seibu New 101 series train
Manufacturer	Seibu Tokorozawa railway works, Tokyu car cooperation
Constructed	1979–1984
Entered service	1979 [3]
Number built	154 vehicles
Formation	2/4/8 cars per trainset
Operators	Seibu Railway
Specifications
Car length	20,000 mm (65 ft 7 in)[1][3]
Width	2,881 mm (9 ft 5.4 in)[1][3]
Height	4,065 mm (13 ft 4.0 in)[1][3]
Floor height	880 mm (2 ft 11 in)[1][3]
Doors	3 pairs per side[1]
Maximum speed	105 km/h (65 mph)
Traction system	Resistor control
Traction motors	HS-836-Nrb HS-836-Prb
Power output	150 kW (201 hp)[1]
Acceleration	2.3km/h/s
Deceleration	3.5km/h/s (Service) 4.5km/h/s (Emergency)
Electric system(s)	1,500 V DC overhead catenary
Current collection	Pantograph
Safety system(s)	ATS
Track gauge	1,067 mm (3 ft 6 in)

The New 101 series features changes in design.^[4] The 301 series is based on the New 101 series,^[5] and were formed as eight-car sets.^[2]

• 
  Interior view
• 
  Priority seating
• 
  Wheelchair space

Resale

The Chichibu Railway 6000 series trains were rebuilt from former Seibu New 101 series trains.^[6] Sangi Railway operates former New 101 series trains as Sangi Railway 751 series.^[7] Former Seibu New 101 series trains were also transferred to Ryutetsu, becoming Ryutetsu 5000 series trains.^[8]

• 
  Chichibu Railway 6000 series
• 
  Sangi Railway 751 series
• 
  Ryutetsu 5000 series

Livery variations

In 2018, one set received a livery resembling the Ohmi Railway 100 series.^[9] Other livery variations include a set in Izuhakone Railway livery,^[10] and a set in red and beige livery.^[11]

• 
  101 series in Ohmi Railway livery
• 
  Set 1249 in Izuhakone Railway-style livery
• 
  Red and beige livery

Preserved examples

• KuHa 1150: used as a library room at the Kumegawa Train Library in Higashimurayama, Tokyo.^[12]
• KuHa 1224: preserved at Yokoze yard.^[1]
• KuHa 1262: exhibited outside the MetLife Dome in Tokorozawa, Saitama.^[13]

• 
  Kumegawa Train Library
• 
  KuHa 1224 at Yokoze yard in December 2012
• 
  KuHa 1262 in May 2021