Detailed data

Environmental Data by Operations Base

[Chemicals] Substances subject to PRTR
[Atmosphere] Measured values are the maximum values
[Water quality] pH: Hydrogen-ion concentration/ COD:Chemical oxygen demand/ BOD: Biochemical oxygen demand/ SS: Suspended solids in water/ Oil content: N-hexane extract content/ ND: Lower than determination limit/ Values in parenthesis show the daily average values
[Regulated value] JTEKT internal standards (some more stricter than regulatory amounts)
[Substances subject to PRTR] Shows substances which are handled in amounts of 1,000 kg/year or more. Substance number shows the legislative number for each of the No. 1 type chemical substances of the PRTR regulations. Removal processing amount is the amount of substances subject to PRTR which are incinerated, neutralized, broken down, put through reaction treatment, etc. within JTEKT premises. Consumed amount is the amount of substances subject to PRTR which are changed to another substance through reaction treatment, or removed from JTEKT premises in, or attached to, products.
[Target period] April 2020 to March 2021

Domestic plants・offices

Kokubu Plant
No. of Employees
1,782
Production items
  • All types of ball bearings
  • Roller bearings
  • Ultra-large bearings
  • High-accuracy bearings
Overall environmental data
* Due to sewage disposal, there are no regulation values for COD, nitrogen, or phosphorus
Water quality measurement data
Unit : mg/L (Excluding pH)
Atmosphere measurement data
Unit : Dust=g/Nm3 NOx=ppm SOx=Value K
Noise / Vibration data
Unit : dB
Foul odor
Unit : ppm
* Malodorous substances (22 substances) were measured.
* All items not listed were below minimum determination limit.
Substances subject to PRTR
*No substances with a handling volume of 1,000 kg/year or more
Kariya Plant
No. of Employees
1,488
Production items
  • Machine tools
  • Damper pulleys
  • Control equipment
Overall environmental data
Water quality measurement data
Unit : mg/L (Excluding pH)
Unit : mg/L (Excluding pH)
Atmosphere measurement data
Unit : Dust=g/Nm3 NOx=ppm SOx=Nm3/hr
Noise / Vibration data
Unit : dB
Foul odor
Substances subject to PRTR
*No substances with a handling volume of 1,000 kg/year or more
Shikoku Plant (Tokushima)
No. of Employees
1,025
Production items
  • Ball bearings
  • Water pump bearings
  • Cylindrical roller bearings
  • Special environment bearings
  • Double row angular contact ball bearings
  • Hub units
  • Tensioner pulleys
Overall environmental data
Water quality measurement data
Unit : mg/L (Excluding pH)
Atmosphere measurement data
*There are no facilities subject to atmosphere measurement.
Noise / Vibration data
Unit : dB
Foul odor
* Malodorous substances (22 substances) were measured.
* All items were below minimum determination limit.
Substances subject to PRTR
Unit : kg/year
Okazaki Plant
No. of Employees
880
Production items
  • 4WD coupling
  • Linear solenoid valves for AT and CVT
  • Oil pumps for AT and CVT
  • Propeller shafts
  • Cast parts
Overall environmental data
Water quality measurement data
Unit : mg/L (Excluding pH)
Unit : mg/L (Excluding pH)
Unit : mg/L (Excluding pH)
Atmosphere measurement data
Unit : Dust=g/Nm3 NOx=ppm SOx=Nm3/hr
Noise / Vibration data
Unit : dB
Foul odor
Substances subject to PRTR
Unit : kg/year
Kanto Plant (Hamura)
No. of Employees
488
Production items
  • Needle roller bearings
  • Constant velocity joints
  • Drive shafts
  • Propeller shafts
Overall environmental data
* Due to sewage disposal, there are no regulation values for COD
Water quality measurement data
Unit : mg/L (Excluding pH)
Atmosphere measurement data
Unit : Dust=g/Nm3 NOx=ppm SOx=Value K
Noise / Vibration data
Unit : dB
Foul odor
* Changed to the odor index in FY2016
Substances subject to PRTR
Unit : kg/year
Shikoku Plant (Kagawa)
No. of Employees
824
Production items
  • Tapered roller bearings
  • Hub units
Overall environmental data
Water quality measurement data
Unit : mg/L (Excluding pH)
Atmosphere measurement data
Unit : Dust=g/Nm3 NOx=ppm SOx=Value K
Noise / Vibration data
Unit : dB
Foul odor
Unit : ppm
Substances subject to PRTR
Unit : kg/year
Nara Plant
No. of Employees
1,843
Production items
  • Electric power steering
  • Electric pumps for hydraulic-electric type power steering
  • Hydraulic power steering
  • Manual steering
Overall environmental data
Water quality measurement data
Unit : mg/L (Excluding pH)
Unit : mg/L (Excluding pH)
Atmosphere measurement data
*There are no facilities subject to atmosphere measurement.
Noise / Vibration data
Unit : dB
Foul odor
*Malodorous substances (22 substances) were measured.
*All items were below minimum determination limit.s
Substances subject to PRTR
Unit : kg/year
Higashi Kariya Operations Center
No. of Employees
448
Overall environmental data
Water quality measurement data
Unit:mg/ℓ(Excluding pH)
Unit:mg/ℓ(Excluding pH)
Atmosphere measurement data
*There are no facilities subject to atmosphere measurement.
Noise / Vibration data
Unit : dB
Foul odor
Substances subject to PRTR
* No substances with a handling volume of 1,000 kg/year or more
Toyohashi Plant
No. of Employees
605
Production items
  • Hydraulic power steering
  • Manual steering
  • Safety handle column
Overall environmental data
Water quality measurement data
Unit:mg/ℓ(Excluding pH)
Atmosphere measurement data
Unit:Dust=g/N㎥ NOx=ppm SOx=Value K
Noise / Vibration data
Unit : dB
Foul odor
Substances subject to PRTR
*No substances with a handling volume of 1,000 kg/year or more
Tadomisaki Plant
No. of Employees
1,171
Production items
  • Drive shafts
  • 4WD coupling
Overall environmental data
Water quality measurement data
Unit:mg/ℓ(Excluding pH)
*Exceeded the JTEKT internal standard, however;
complied with the legal standard
Unit:mg/ℓ(Excluding pH)
*Exceeded the JTEKT internal standard, however; complied with the legal standard
Atmosphere measurement data
Unit : Dust=g/N㎥ NOx=ppm N㎥/hr
Noise / Vibration data
Unit : dB
Foul odor
Substances subject to PRTR
*No substances with a handling volume of 1,000 kg/year or more
Hanazono Plant
No. of Employees
1,826
Production items
  • Electric power steering
  • Hydraulic power steering
    pump
  • Control computer
Overall environmental data
Water quality measurement data
Unit:mg/ℓ(Excluding pH)
Unit:mg/ℓ(Excluding pH)
Atmosphere measurement data
Unit : Dust=g/N㎥ NOx=ppm N㎥/hr
Noise / Vibration data
Unit : dB
Foul odor
Substances subject to PRTR
* No substances with a handling volume of 1,000 kg/year or more
Kameyama Plant
No. of Employees
454
Production items
  • Ball bearings
  • Clutch bearings
  • Clutch pulleys for
    alternator
  • Hub units
Overall environmental data
Water quality measurement data
Unit:mg/ℓ(Excluding pH)
Unit:mg/ℓ(Excluding pH)
Atmosphere measurement data
Unit : Dust=g/N㎥ NOx=ppm N㎥/hr
Noise / Vibration data
Unit : dB
Foul odor
* Malodorous substances (22 substances) were measured.
* All items were below minimum determination limit.
Substances subject to PRTR
* No substances with a handling volume of 1,000 kg/year or more
Kanto Plant (Sayama)
No. of Employees
226
Production items
  • TORSEN
Overall environmental data
Water quality measurement data
Unit:mg/ℓ(Excluding pH)
Atmosphere measurement dat
Unit : Dust=g/N㎥ NOx=ppm N㎥/hr
Noise / Vibration data
Unit : dB
*Not measured as not subject to Vibration Regulations
Foul odor
*Not measured as not subject to Odor Regulations
Substances subject to PRTR
* No substances with a handling volume of 1,000 kg/year or more

Global business sites

Domestic group companies
Koyo Machine Industries Co., Ltd.
Koyo Sealing Techno Co., Ltd.
Koyo Thermo Systems Co., Ltd.
Daibea Co., Ltd.
Koyometaltec Co., Ltd.
KJK Co., Ltd.
NIPPON NEEDLE ROLLER MFG. Co., Ltd.
Koyo Heat Treatment Co., Ltd.
Taiho Co., Ltd.
Yamato Seiko Co.,Ltd.
Toyooki Kogyo Co., Ltd.
CNK Co., Ltd.
Koyo Electronics Industries Co., Ltd.
Utsunomiya Kiki Co., Ltd.
HOUKO Co., Ltd.
Toyoda Van Moppes Ltd.
FORMICS Co., Ltd.
Tokio Seiko Corporation
FUJI KIKO Co., Ltd.
Yutaka Gears and Machinery Corp.
Domestic group Total
* Emissions = Amount of recyclables sold + amount of waste disposed
* Includes chemical substances subject to PRTR which have a handling amount of 1000 kg/year or more.
Global business sites [Europe]
JADS
(JTEKT AUTOMOTIVE DIJON SAINT-ETIENNE S.A.S.)
JALY
(JTEKT AUTOMOTIVE LYON S.A.S.)
JHPI
(JTEKT HPI S.A.S.)
JAUK
(JTEKT AUTOMOTIVE UK LTD.)
KBVM
(KOYO BEARINGS VIERZON MAROMME SAS)
KBE
(KOYO BEARINGS(EUROPE)LTD.)
JAPL
(JTEKT AUTOMOTIVE CZECH PLZEN,S.R.O.)
KBCZ
(KOYO BEARINGS CESKA REPUBLIKA S.R.O.)
JAPA
(JTEKT AUTOMOTIVE CZECH PARDUBICE, S.R.O.)
JTRE
(JTEKT TORSEN EUROPE S.A.)
KRA
(KOYO ROMANIA S.A.)
KBDE
(KOYO BEARINGS DEUTSCHLAND GMBH)
JAMO
(JTEKT AUTOMOTIVE MOROCCO, S.A.S.)
Europe group Total
* Emissions = Amount of recyclables sold + amount of waste disposed
Global business sites [China]
JATJ
(JTEKT AUTOMOTIVE (TIANJIN) CO., LTD.)
JSSX
(JTEKT STEERING SYSTEMS (XIAMEN) CO., LTD.)
WKB
(WUXI KOYO BEARING CO., LTD.)
KWA
(WUXI KOYO BEARING CO., LTD.)
KDC
(KOYO BEARING DALIAN CO., LTD.)
KLF
(KOYO LIOHO (FOSHAN) AUTOMOTIVE PARTS CO., LTD.)
KAW
(KOYO AUTOMOTIVE PARTS (WUXI) CO., LTD.)
JDI
(JTEKT DALIAN INNOVATION AUTOMOTIVE CO., LTD.)
KNBW
(KOYO NEEDLE BEARINGS (WUXI) CO., LTD.)
China group Total
* Emissions = Amount of recyclables sold + amount of waste disposed
Global business sites [Asia/Oceania]
JTC
(JTEKT(THAILAND)CO.,LTD.)
JATH
(JTEKT AUTOMOTIVE(THAILAND)CO.,LTD.)
JAMY
(JTEKT AUTOMOTIVE(MALAYSIA)SDN. BHD.)
KMP(JPC)
(KOYO MANUFACTURING(PHILIPPINES)CORPORATION)
JID
(PT.JTEKT INDONESIA)
KJKC
(KOYO JICO KOREA CO., LTD.)
KBIN
(KOYO BEARINGS INDIA PVT. LTD.)
JIN
(JTEKT INDIA LTD.)
Asia/Oceania group Total
* Emissions = Amount of recyclables sold + amount of waste disposed
Global business sites [North America/South America]
JATV
(JTEKT AUTOMOTIVE TENNESSEE-VONORE, LLC)
JATM
(JTEKT AUTOMOTIVE TENNESSEE-MORRISTOWN, INC.)
JATX
(JTEKT AUTOMOTIVE TEXAS, L.P.)
KBNA
(KOYO BEARINGS NORTH AMERICA LLC)
JASC
(JTEKT AUTOMOTIVE SOUTH CAROLINA,INC.)
KBCA
(KOYO BEARINGS CANADA INC.)
JAMX
(JTEKT AUTOMOTIVE MEXICO,S.A de C.V)
JBR
(JTEKT BRASIL LTDA.)
JAAR
(JTEKT AUTOMOTIVE ARGENTINA S.A.)
North America / South America group Total
* Emissions = Amount of recyclables sold + amount of waste disposed