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About the Information Platform
ENGLISH

NPR-RIKEN CORPORATION

Company Profile

■URL

https://www.npr-riken.co.jp/en/

■Address

Sanbancho Tokyu Bldg., 3F, 8-1 Sanbancho, Chiyoda-ku, Tokyo, 102-8202 Japan

Business Overview

-A major supplier of piston rings in Japan.

-Riken Corporation (Riken) and Nippon Piston Ring Co., Ltd. (NPR) announced that they have established a wholly owning parent company of both companies, NPR-RIKEN Corporation, through a joint share transfer.

Featured report

  

2023 Business Overview of Japanese Suppliers

 Featured report
 

Shareholders

RIKEN Corporation became a wholly owned subsidiary of NPR-RIKEN Corporation in October 2023. As a result, it was delisted.

Shareholders of NPR-RIKEN that was listed on the Prime Market of the Tokyo Stock Exchange on October 2, 2023 (As of Mar. 31, 2025)
Name or Company Name Investment Ratio (%)
The Master Trust Bank of Japan, Ltd. (Trust Account) 12.69
Mizuho Bank Ltd. 3.62
Nippon Life Insurance Company 3.47
Custody Bank of Japan, Ltd. (Trust Account) 3.31
NPR-RIKEN Employee Stock Ownership Association 2.71
Daishi Hokuetsu Bank, Ltd. 2.38
Individual shareholder 2.37
Nomura Securities Co., Ltd. 2.00
Sumitomo Mitsui Trust Bank, Limited. 1.95
Riken Kashiwazaki Stock Ownership Association 1.91
Total 36.68
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Products

Piston rings

Engine parts
-Camshafts
-Valves seats
-Valve lifters
-Valve spring retainers
-Expansion chambers
-Tappets
-Rocker arms
-Crankshafts

Transmission parts
-Seal rings
-Differential cases
-Pinion shafts

Drive and chassis parts
-Steering knuckles
-Damper forks
-Brake calipers
-Pressure plates
-Lower arms

Other automotive parts
-Vanes for air compressors
-Shoes and shoe discs for air conditioning systems
-Vanes for power steering systems
-Noise-control sheets
-Radio-wave absorption sheets
-Saturation-resistant, noise-control cores
-Compact concatenated noise suppression cores
-Split noise-suppression cores
-Plastic gears
-Plastic cases

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History

Nov. 1927 Rikagaku Kogyo was established. This company was the first to start manufacturing practical rings in Japan.
Dec. 1949 Reestablished as Riken Kashiwazaki Piston Ring (Headquarters at 3-5 Nihonbashi, Chuo-ku), capitalized at 20 million yen.
May, 1952 Listed on the Tokyo Stock Exchange.
Oct. 1979 Corporate name changed to RIKEN Corporation.
Oct. 1998 Received the TPM first-class prize for continuing excellence
Aug. 1999 Provided technical assistance to DANA-ALBARUS (Brazil) for piston rings for VW Brazil
May, 2000 Signed a memorandum of understanding with Dana (USA) for a global tie-up in the piston ring business
Mar. 2001 RIKEN's piston ring manufacturing facilities in Kashiwazaki, Japan and Kumagaya, Japan received ISO14000 certificates.
Feb. 2003 Established the Jakarta representative office as a subordinate organization under the Asian sales team of the overseas sales division.
Jan. 2004 Established Riken Automobile Parts (Wuhan) Co., Ltd. in Hubei, China to manufacture and sell piston rings etc. in China.
Oct. 2004 The Company's piston ring division and the precision machinery component division at the Kumagaya plant received ISO/TS16949 certification in October 2004. (The Company's main domestic and overseas subsidiaries received ISO/TS16949 certification around October 2004.)
June, 2007 The Company and MAHLE GmbH signed a memorandum of understanding under which they will form a global business alliance in the areas of piston rings, camshafts, and other products.
Jan. 2008 The Company sold all shares it owned in Riken of Korea Inc. As a result, the Korean company will be removed from the Group's consolidated statements from fiscal year 2008.
June, 2010 Formed an Overseas Committee designed to promote business strategies outside Japan based on a cross-section of operations.
Aug. 2012 Established Riken Mexico, S.A. DE C.V. as a production plant to supply automotive and industrial machinery parts to North, South, and Central America; in Aguascalientes.
Aug. 2014 Sold entire 100 percent stake of Riken Espana, S.A., and removed it from its consolidated financial statements.
Aug. 2014 Moved its headquarters to Sanbancho, Chiyoda-ku, Tokyo.
Oct. 2014 Jointly with Amtek India Limited, the Company established Amtek Riken Casting Private Limited in Rajasthan, India to manufacture and sell automotive castings.
Apr. 2015 Signed an MOU with KS Kolbenschmidt (based in Germany) that covers global sales, engineering, and development of power cylinder systems that includes pistons and piston rings.
Spun off the sealing ring business of Riken Automobile Parts (Wuhan) Co., Ltd., establishing it as Riken Sealing Parts (Wuhan) Co., Ltd., in order to strengthen the sealing-ring business in China.
Oct. 2015 Established Riken Sales and Trading (Thailand) Co., Ltd. in Bangkok, Thailand, to strengthen sales of piston rings in Asia.
Apr. 2017 Formed a business alliance of the camshaft business with Brother Precision Ind. Co., Ltd. and set up Riken Brother Precision Industry Corporation in Chiryu City, Aichi Pref.
Nov. 2018 Liquidated Allied Ring as a result of environmental changes taking place in the automotive-industry.
Jun. 2019 Established Riken Power System (Nanjing) Co,. Ltd., a joint venture with Nanjing Feiyan Piston Ring Co., Ltd., to manufacture and sell piston rings in China.
Apr. 2022 Moved from the First Section of the Tokyo Stock Exchange to the Prime Market due to the TSE's reorganization.
May 2023 Turned JFE Tsugite Co., Ltd. into a consolidated subsidiary, renaming it Nippon Pipe Fitting Corp.
Jun. 2023 Agreement reached at general meeting of shareholders on plan to merge with Nippon Piston Ring Co., Ltd. and transfer stock shares.
Oct. 2023 Established NPR-RIKEN Corporation, and listed it on the Prime Market of the Tokyo Stock Exchange on same day.
Feb. 2024 Acquired equity shares in Shinwa Banes Corporation, making it a subsidiary of Riken Corporation.

Supplemental Information 1

>>>Business report FY ended Mar. 31, 2008
>>>Business report FY ended Mar. 31, 2009
>>>Business report FY ended Mar. 31, 2010
>>>Business report FY ended Mar. 31, 2011
>>>Business report FY ended Mar. 31, 2012
>>>Business report FY ended Mar. 31, 2013
>>>Business report FY ended Mar. 31, 2014
>>>Business report FY ended Mar. 31, 2015
>>>Business report FY ended Mar. 31, 2016
>>>Business report FY ended Mar. 31, 2017
>>>Business report FY ended Mar. 31, 2018
>>>Business report FY ended Mar. 31, 2019
>>>Business report FY ended Mar. 31, 2020
>>>Business report FY ended Mar. 31, 2021
>>>Business report FY ended Mar. 31, 2022
>>>Business report FY ended Mar. 31, 2023
>>>Business report FY ended Mar. 31, 2024

Archives of Past Exhibits

Note: A figure in brackets ( ) indicates a loss

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JSAE Yokohama 2026
Plastic case for electric-motorcar
Plastic cases for electric vehicles. Applications are divided into small and large types. The small plastic case category includes (1) a plastic/metal hybrid bonded case, and (2) a metal-coated plastic case.
(1) The plastic/metal hybrid bonded case is made by combining an aluminum plate and plastic using a proprietary bonding technology.
(2) The metal-coated plastic case is a plastic case that is given electromagnetic shielding functionality by applying a thin aluminum coating to the plastic.
Both types are intended for use as housings for electronic components such as millimeter-wave radar and ECUs. In addition to the benefit of weight reduction, they provide electric-field noise shielding and heat dissipation performance comparable to metal cases.
The large plastic case is a material substitution case in which aluminum is replaced with plastic.
JSAE Yokohama 2026
Plastic case for electric-motorcar
Plastic cases for electric vehicles. Applications are divided into small and large types. The small plastic case category includes (1) a plastic/metal hybrid bonded case, and (2) a metal-coated plastic case.
(1) The plastic/metal hybrid bonded case is made by combining an aluminum plate and plastic using a proprietary bonding technology.
(2) The metal-coated plastic case is a plastic case that is given electromagnetic shielding functionality by applying a thin aluminum coating to the plastic.
Both types are intended for use as housings for electronic components such as millimeter-wave radar and ECUs. In addition to the benefit of weight reduction, they provide electric-field noise shielding and heat dissipation performance comparable to metal cases.
The large plastic case is a material substitution case in which aluminum is replaced with plastic.
JSAE Yokohama 2026
Plastic case for electric-motorcar
Plastic cases for electric vehicles. Applications are divided into small and large types. The small plastic case category includes (1) a plastic/metal hybrid bonded case, and (2) a metal-coated plastic case.
(1) The plastic/metal hybrid bonded case is made by combining an aluminum plate and plastic using a proprietary bonding technology.
(2) The metal-coated plastic case is a plastic case that is given electromagnetic shielding functionality by applying a thin aluminum coating to the plastic.
Both types are intended for use as housings for electronic components such as millimeter-wave radar and ECUs. In addition to the benefit of weight reduction, they provide electric-field noise shielding and heat dissipation performance comparable to metal cases.
The large plastic case is a material substitution case in which aluminum is replaced with plastic.
JSAE Yokohama 2026
Plastic case for electric-motorcar
Plastic cases for electric vehicles. Applications are divided into small and large types. The small plastic case category includes (1) a plastic/metal hybrid bonded case, and (2) a metal-coated plastic case.
(1) The plastic/metal hybrid bonded case is made by combining an aluminum plate and plastic using a proprietary bonding technology.
(2) The metal-coated plastic case is a plastic case that is given electromagnetic shielding functionality by applying a thin aluminum coating to the plastic.
Both types are intended for use as housings for electronic components such as millimeter-wave radar and ECUs. In addition to the benefit of weight reduction, they provide electric-field noise shielding and heat dissipation performance comparable to metal cases.
The large plastic case is a material substitution case in which aluminum is replaced with plastic.
JSAE Yokohama 2026
Plastic case for electric-motorcar
Plastic cases for electric vehicles. Applications are divided into small and large types. The small plastic case category includes (1) a plastic/metal hybrid bonded case, and (2) a metal-coated plastic case.
(1) The plastic/metal hybrid bonded case is made by combining an aluminum plate and plastic using a proprietary bonding technology.
(2) The metal-coated plastic case is a plastic case that is given electromagnetic shielding functionality by applying a thin aluminum coating to the plastic.
Both types are intended for use as housings for electronic components such as millimeter-wave radar and ECUs. In addition to the benefit of weight reduction, they provide electric-field noise shielding and heat dissipation performance comparable to metal cases.
The large plastic case is a material substitution case in which aluminum is replaced with plastic.
JSAE Yokohama 2026
Plastic case for electric-motorcar
Plastic cases for electric vehicles. Applications are divided into small and large types. The small plastic case category includes (1) a plastic/metal hybrid bonded case, and (2) a metal-coated plastic case.
(1) The plastic/metal hybrid bonded case is made by combining an aluminum plate and plastic using a proprietary bonding technology.
(2) The metal-coated plastic case is a plastic case that is given electromagnetic shielding functionality by applying a thin aluminum coating to the plastic.
Both types are intended for use as housings for electronic components such as millimeter-wave radar and ECUs. In addition to the benefit of weight reduction, they provide electric-field noise shielding and heat dissipation performance comparable to metal cases.
The large plastic case is a material substitution case in which aluminum is replaced with plastic.
JSAE Yokohama 2026
Plastic case for electric-motorcar
Plastic cases for electric vehicles. Applications are divided into small and large types. The small plastic case category includes (1) a plastic/metal hybrid bonded case, and (2) a metal-coated plastic case.
(1) The plastic/metal hybrid bonded case is made by combining an aluminum plate and plastic using a proprietary bonding technology.
(2) The metal-coated plastic case is a plastic case that is given electromagnetic shielding functionality by applying a thin aluminum coating to the plastic.
Both types are intended for use as housings for electronic components such as millimeter-wave radar and ECUs. In addition to the benefit of weight reduction, they provide electric-field noise shielding and heat dissipation performance comparable to metal cases.
The large plastic case is a material substitution case in which aluminum is replaced with plastic.
JSAE Yokohama 2026
High-end plastic gears
High-end plastic gears made from our proprietary material, which offers superior strength, fatigue resistance, and sliding performance compared to commercially available PEEK materials. They feature approximately 1.5 times the torque capacity and reduce friction-induced heat generation. Because they have a higher torque capacity than conventional PEEK gears, they enable the replacement of metal components with plastic in applications where metal substitution was previously impossible, resulting in lighter weight and quieter operation.
JSAE Yokohama 2026
High-end plastic gears
High-end plastic gears made from our proprietary material, which offers superior strength, fatigue resistance, and sliding performance compared to commercially available PEEK materials. They feature approximately 1.5 times the torque capacity and reduce friction-induced heat generation. Because they have a higher torque capacity than conventional PEEK gears, they enable the replacement of metal components with plastic in applications where metal substitution was previously impossible, resulting in lighter weight and quieter operation.
JSAE Yokohama 2026
High-end plastic gears
High-end plastic gears made from our proprietary material, which offers superior strength, fatigue resistance, and sliding performance compared to commercially available PEEK materials. They feature approximately 1.5 times the torque capacity and reduce friction-induced heat generation. Because they have a higher torque capacity than conventional PEEK gears, they enable the replacement of metal components with plastic in applications where metal substitution was previously impossible, resulting in lighter weight and quieter operation.
JSAE Yokohama 2026
Piston, piston ring, valve seat
JSAE Yokohama 2026
Piston, piston ring, valve seat
JSAE Yokohama 2026
Piston, piston ring, valve seat
JSAE Yokohama 2026
Plastic strain wave gear reducer
This is a gear reducer that offers excellent backlash-free performance and high positioning accuracy.
We have successfully developed a plastic wave gear reducer using our manufacturing and mechanical design technologies for super engineering plastics.
The use of plastic enables further weight reduction.
JSAE Yokohama 2026
Plastic strain wave gear reducer
This is a gear reducer that offers excellent backlash-free performance and high positioning accuracy.
We have successfully developed a plastic wave gear reducer using our manufacturing and mechanical design technologies for super engineering plastics.
The use of plastic enables further weight reduction.
JSAE Yokohama 2026
Plastic strain wave gear reducer
This is a gear reducer that offers excellent backlash-free performance and high positioning accuracy.
We have successfully developed a plastic wave gear reducer using our manufacturing and mechanical design technologies for super engineering plastics.
The use of plastic enables further weight reduction.
JSAE Yokohama 2026
Plastic strain wave gear reducer
This is a gear reducer that offers excellent backlash-free performance and high positioning accuracy.
We have successfully developed a plastic wave gear reducer using our manufacturing and mechanical design technologies for super engineering plastics.
The use of plastic enables further weight reduction.
JSAE Yokohama 2026
Plastic strain wave gear reducer
JSAE Yokohama 2026
Metal type strain wave gear reducer (unit type)
JSAE Yokohama 2026
3K planetary gear reducer
Ultra-thin and highly efficient
Developed in collaboration with Yokohama National University, this gear reducer features an optimized design for transmission efficiency, achieving over 90% efficiency across a reduction ratio range of 10 to 100.
Its high transmission efficiency enables reverse drive capability.
JSAE Yokohama 2026
3K planetary gear reducer
Ultra-thin and highly efficient
Developed in collaboration with Yokohama National University, this gear reducer features an optimized design for transmission efficiency, achieving over 90% efficiency across a reduction ratio range of 10 to 100.
Its high transmission efficiency enables reverse drive capability.
JSAE Yokohama 2026
Ultra-thin cycloid reducer
Cycloidal reducer
constructed solely from gears, without the use of pins Achieves high reduction ratios by employing a special tooth profile that allows the planetary gear and the internal gear to mesh with the same number of teeth.
JSAE Yokohama 2026
Traction Drive
JSAE Yokohama 2026
Motor products/components
In-wheel motors for driving agricultural robot
Radial gap type frameless motor
Thin axial type motor
Small mobility drive motor
Soft magnetic composite core
JSAE Yokohama 2026
Motor products/components
In-wheel motors for driving agricultural robot
Radial gap type frameless motor
Thin axial type motor
Small mobility drive motor
Soft magnetic composite core
JSAE Yokohama 2026
Motor products/components
In-wheel motors for driving agricultural robot
Radial gap type frameless motor
Thin axial type motor
Small mobility drive motor
Soft magnetic composite core
JSAE Yokohama 2026
Motor products/components
In-wheel motors for driving agricultural robot
Radial gap type frameless motor
Thin axial type motor
Small mobility drive motor
Soft magnetic composite core
JSAE Yokohama 2026
Motor products/components
In-wheel motors for driving agricultural robot
Radial gap type frameless motor
Thin axial type motor
Small mobility drive motor
Soft magnetic composite core
JSAE Yokohama 2026
Motor products/components
In-wheel motors for driving agricultural robot
Radial gap type frameless motor
Thin axial type motor
Small mobility drive motor
Soft magnetic composite core
JSAE Yokohama 2026
Actuator for micromobility
Actuator for small mobility applications combining an axial-gap motor and a 3K planetary gearhead
In-house design of the motor and gearhead enables a slim profile
The use of a 3K planetary gearhead enables back-driving capability
JSAE Yokohama 2026
Actuator for miniaturized drive unit
An actuator designed for compact drive units, featuring a radial-gap motor—ideal for reducing overall dimensions—and a specialized cycloidal reducer optimized for a slim profile
The motor and reducer are designed as a single unit, enabling a slim actuator design
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Surface treatment technology that adds high functionality using thin films
TIN coating
TI coating
DLC coating
JSAE Yokohama 2026
Electromagnetic Interference (EMI) Mitigation Products
Noise suppression sheet
Radio wave absorbing sheet
Noise suppression heat conduction material
Ferrite clamp core
Nanocrystal clamp core
JSAE Yokohama 2026
Electromagnetic Interference (EMI) Mitigation Products
Noise suppression sheet
Radio wave absorbing sheet
Noise suppression heat conduction material
Ferrite clamp core
Nanocrystal clamp core
JSAE Yokohama 2026
Electromagnetic Interference (EMI) Mitigation Products
Noise suppression sheet
Radio wave absorbing sheet
Noise suppression heat conduction material
Ferrite clamp core
Nanocrystal clamp core
JSAE Yokohama 2026
Electromagnetic Interference (EMI) Mitigation Products
Noise suppression sheet
Radio wave absorbing sheet
Noise suppression heat conduction material
Ferrite clamp core
Nanocrystal clamp core
JSAE Yokohama 2026
Electromagnetic Interference (EMI) Mitigation Products
Noise suppression sheet
Radio wave absorbing sheet
Noise suppression heat conduction material
Ferrite clamp core
Nanocrystal clamp core
JSAE Yokohama 2026
Electromagnetic Interference (EMI) Mitigation Products
Noise suppression sheet
Radio wave absorbing sheet
Noise suppression heat conduction material
Ferrite clamp core
Nanocrystal clamp core
2025 JSAE Automotive Engineering Exposition
Actuator and motor product
- Capable of meeting various requirements for miniaturization and high efficiency.
2025 JSAE Automotive Engineering Exposition
Actuator and motor product
- Capable of meeting various requirements for miniaturization and high efficiency.
2025 JSAE Automotive Engineering Exposition
Actuator and motor product
- Capable of meeting various requirements for miniaturization and high efficiency.
2025 JSAE Automotive Engineering Exposition
Actuator and motor product
- Capable of meeting various requirements for miniaturization and high efficiency.
2025 JSAE Automotive Engineering Exposition
Actuator and motor product
- Capable of meeting various requirements for miniaturization and high efficiency.
2025 JSAE Automotive Engineering Exposition
Actuator and motor product
- Capable of meeting various requirements for miniaturization and high efficiency.
2025 JSAE Automotive Engineering Exposition
Actuator and motor product
- Capable of meeting various requirements for miniaturization and high efficiency.
2025 JSAE Automotive Engineering Exposition
Electromagnetic noise suppression products for automotive applications
2025 JSAE Automotive Engineering Exposition
Electromagnetic noise suppression products for automotive applications
2025 JSAE Automotive Engineering Exposition
Electromagnetic noise suppression products for automotive applications
2025 JSAE Automotive Engineering Exposition
Surface modification technology using microfabrication
-Microfabrication of metallic/non-metallic parts using a laser can be used to improve lubrication, etc.
2025 JSAE Automotive Engineering Exposition
Surface modification technology using microfabrication
-Microfabrication of metallic/non-metallic parts using a laser can be used to improve lubrication, etc.
2025 JSAE Automotive Engineering Exposition
Surface modification technology using microfabrication
-Microfabrication of metallic/non-metallic parts using a laser can be used to improve lubrication, etc.
JAPAN MOBILITY SHOW BIZWEEK / CEATEC 2024
EMC (Electro-Magnetic Compatibility) material technologies
Electro-Magnetic Compatibility (EMC) material technologies including radio wave absorption sheets, noise suppression sheets, thermal conduction sheets, ferrite/nanocrystal clamp cores, etc.
JAPAN MOBILITY SHOW BIZWEEK / CEATEC 2024
EMC (Electro-Magnetic Compatibility) material technologies
Electro-Magnetic Compatibility (EMC) material technologies including radio wave absorption sheets, noise suppression sheets, thermal conduction sheets, ferrite/nanocrystal clamp cores, etc.
JAPAN MOBILITY SHOW BIZWEEK / CEATEC 2024
EMC (Electro-Magnetic Compatibility) material technologies
Electro-Magnetic Compatibility (EMC) material technologies including radio wave absorption sheets, noise suppression sheets, thermal conduction sheets, ferrite/nanocrystal clamp cores, etc.
JAPAN MOBILITY SHOW BIZWEEK / CEATEC 2024
EMC (Electro-Magnetic Compatibility) material technologies
Electro-Magnetic Compatibility (EMC) material technologies including radio wave absorption sheets, noise suppression sheets, thermal conduction sheets, ferrite/nanocrystal clamp cores, etc.
Automotive World 2024
Noise suppression sheet
Automotive World 2024
Noise suppression sheet
Automotive World 2024
Noise suppression sheet
High-frequency conduction noise countermeasure sheet that compatible with high frequencies such as 5G and millimeter waves. It can handle up to 125 degrees and is suitable for automotive use.
Automotive World 2024
Noise suppression case
Automotive World 2024
Low-frequency type nano-crystal clamp core
Supports 10kHz~1MHz
Automotive World 2024
High-frequency type nano-crystal clamp core
Split type noise suppression core for convenient attachment to cables.
Automotive World 2024
High-frequency type nano-crystal clamp core
Split type noise suppression core for convenient attachment to cables.
Automotive World 2024
High-frequency type nano-crystal clamp core
Split type noise suppression core for convenient attachment to cables.
Automotive World 2024
High-frequency type nano-crystal clamp core
Split type noise suppression core for convenient attachment to cables.
Automotive World 2024
Cable type assembly core
Assembly core that integrates a split core and a holder for bundling cables
Automotive World 2024
Busbar type assembly core
Automotive World 2024
Plastic gear products
Automotive World 2024
Plastic gear products
Automotive World 2024
Plastic gear products
Automotive World 2024
Plastic gear products
Automotive World 2024
Plastic cases
Hybrid case made of plastic and metal for electric vehicles. Used as a case for electronic devices such as millimeter wave radar units and ECUs. Lighter than aluminum, but with the same shielding and heat dissipation performance.
Automotive World 2024
Plastic cases
Hybrid case made of plastic and metal for electric vehicles. Used as a case for electronic devices such as millimeter wave radar units and ECUs. Lighter than aluminum, but with the same shielding and heat dissipation performance.
Automotive World 2024
Plastic cases
Hybrid case made of plastic and metal for electric vehicles. Used as a case for electronic devices such as millimeter wave radar units and ECUs. Lighter than aluminum, but with the same shielding and heat dissipation performance.
Automotive World 2024
Plastic cases
Hybrid case made of plastic and metal for electric vehicles. Used as a case for electronic devices such as millimeter wave radar units and ECUs. Lighter than aluminum, but with the same shielding and heat dissipation performance.
Automotive World 2024
Plastic cases
Hybrid case made of plastic and metal for electric vehicles. Used as a case for electronic devices such as millimeter wave radar units and ECUs. Lighter than aluminum, but with the same shielding and heat dissipation performance.
Automotive World 2024
Plastic inverter case
Automotive World 2024
Plastic inverter case
Automotive World 2024
Plastic water jacket
JAPAN MOBILITY SHOW 2023
High-performance resin gear
JAPAN MOBILITY SHOW 2023
3-lobe type strain wave gear reducer (unit type)
- Available in metal or resin depending on the operating environment.
JAPAN MOBILITY SHOW 2023
3-lobe type resin strain wave gear reducer (unit type)
- Metal or resin can be selected depending on the operating environment.
- The plastic material is lighter in weight. Assumed to be applied to compact mobility devices, etc.
JAPAN MOBILITY SHOW 2023
Piston Ring for hydrogen engines
JAPAN MOBILITY SHOW 2023
High-performance resin gear
JAPAN MOBILITY SHOW 2023
Resin case for electronic devices
JAPAN MOBILITY SHOW 2023
Metal-coated resin case for thermal and electromagnetic coutermeasures
JAPAN MOBILITY SHOW 2023
Resin-metal bonded case for thermal and electromagnetic countermeasures
JAPAN MOBILITY SHOW 2023
3-lobe type strain wave gear reducer (component type)
JAPAN MOBILITY SHOW 2023
3-lobe type strain wave gear reducer (component type)
JAPAN MOBILITY SHOW 2023
3-lobe type resin strain wave gear reducer (component type)
JAPAN MOBILITY SHOW 2023
3-lobe type resin strain wave gear reducer (component type)
JAPAN MOBILITY SHOW 2023
3-lobe type strain wave gear reducer unit type (Metal / Resin)
- Left, made of metal (approx. 550g)
- Right, made of resin (approx. 140g)
CEATEC 2023
Noise suppression sheet and radio wave absorption sheet
-Suppresses noise in electronic devices such as ADAS, radar, displays, and drive recorders. The frequency and thickness of the sheet can be adjusted according to customer requirements.
CEATEC 2023
Noise suppression sheet and radio wave absorption sheet
-Suppresses noise in electronic devices such as ADAS, radar, displays, and drive recorders. The frequency and thickness of the sheet can be adjusted according to customer requirements.
CEATEC 2023
Noise suppression sheet and radio wave absorption sheet
-Suppresses noise in electronic devices such as ADAS, radar, displays, and drive recorders. The frequency and thickness of the sheet can be adjusted according to customer requirements.
CEATEC 2023
Noise suppression sheet and radio wave absorption sheet
-Suppresses noise in electronic devices such as ADAS, radar, displays, and drive recorders. The frequency and thickness of the sheet can be adjusted according to customer requirements.
CEATEC 2023
Noise suppression thermal conductive sheet
-In addition to noise suppression, the company is developing a sheet that also has a heat dissipation function.
CEATEC 2023
Clamp cores / Linked core / Saturation-resistant cores
-Suppress cable conduction noise
CEATEC 2023
Clamp cores / Linked core / Saturation-resistant cores
-Suppress cable conduction noise
CEATEC 2023
Clamp cores / Linked core / Saturation-resistant cores
-Suppress cable conduction noise
CEATEC 2023
Clamp cores / Linked core / Saturation-resistant cores
-Suppress cable conduction noise
CEATEC 2023
Clamp cores / Linked core / Saturation-resistant cores
-Suppress cable conduction noise
CEATEC 2023
Clamp cores / Linked core / Saturation-resistant cores
-Suppress cable conduction noise
2023 JSAE Automotive Engineering Exposition
Sheet for noise suppression and electromagnetic noise suppression
Sheet for noise suppression
-solves electromagnetic noise problems in the near field
-thinness makes it effective for electronic devices, which are becoming thinner and thinner.
-applications: in-vehicle navigation systems, drive recorders, etc.
2023 JSAE Automotive Engineering Exposition
Sheet for noise suppression and electromagnetic noise suppression
Sheet for noise suppression
-solves electromagnetic noise problems in the near field
-thinness makes it effective for electronic devices, which are becoming thinner and thinner.
-applications: in-vehicle navigation systems, drive recorders, etc.
2023 JSAE Automotive Engineering Exposition
Sheet for noise suppression and electromagnetic noise suppression
Sheet for noise suppression
-solves electromagnetic noise problems in the near field
-thinness makes it effective for electronic devices, which are becoming thinner and thinner.
-applications: in-vehicle navigation systems, drive recorders, etc.
2023 JSAE Automotive Engineering Exposition
Noise suppression core
Linked cores / Core holder assembly / Clamp core / Saturation-resistant core / High flux core
2023 JSAE Automotive Engineering Exposition
Noise suppression core
Linked cores / Core holder assembly / Clamp core / Saturation-resistant core / High flux core
2023 JSAE Automotive Engineering Exposition
Noise suppression core
Linked cores / Core holder assembly / Clamp core / Saturation-resistant core / High flux core
2023 JSAE Automotive Engineering Exposition
Noise suppression core
Linked cores / Core holder assembly / Clamp core / Saturation-resistant core / High flux core
2023 JSAE Automotive Engineering Exposition
Noise suppression core
Linked cores / Core holder assembly / Clamp core / Saturation-resistant core / High flux core
2023 JSAE Automotive Engineering Exposition
Plastic gear
-high-strength plastic gears with super engineering plastics applied
-no lubrication but high strength
-application example: automotive actuators (power seats, air conditioners), etc.
2023 JSAE Automotive Engineering Exposition
Plastic gear
-high-strength plastic gears with super engineering plastics applied
-no lubrication but high strength
-application example: automotive actuators (power seats, air conditioners), etc.
2023 JSAE Automotive Engineering Exposition
Plastic gear
-high-strength plastic gears with super engineering plastics applied
-no lubrication but high strength
-application example: automotive actuators (power seats, air conditioners), etc.
2023 JSAE Automotive Engineering Exposition
Strain wave gear reducer
3-lobe wave reduction gear
-twice the rotational angle accuracy of conventional models
-30% improvement in torsional rigidity

3-lobe plastic wave reduction gear
-achieves 10 times higher rotational angle accuracy than other companies
2023 JSAE Automotive Engineering Exposition
Strain wave gear reducer
3-lobe wave reduction gear
-twice the rotational angle accuracy of conventional models
-30% improvement in torsional rigidity

3-lobe plastic wave reduction gear
-achieves 10 times higher rotational angle accuracy than other companies
2023 JSAE Automotive Engineering Exposition
Strain wave gear reducer
3-lobe wave reduction gear
-twice the rotational angle accuracy of conventional models
-30% improvement in torsional rigidity

3-lobe plastic wave reduction gear
-achieves 10 times higher rotational angle accuracy than other companies
2023 JSAE Automotive Engineering Exposition
Strain wave gear reducer
3-lobe wave reduction gear
-twice the rotational angle accuracy of conventional models
-30% improvement in torsional rigidity

3-lobe plastic wave reduction gear
-achieves 10 times higher rotational angle accuracy than other companies
2023 JSAE Automotive Engineering Exposition
Strain wave gear reducer
3-lobe wave reduction gear
-twice the rotational angle accuracy of conventional models
-30% improvement in torsional rigidity

3-lobe plastic wave reduction gear
-achieves 10 times higher rotational angle accuracy than other companies
2023 JSAE Automotive Engineering Exposition
Strain wave gear reducer
3-lobe wave reduction gear
-twice the rotational angle accuracy of conventional models
-30% improvement in torsional rigidity

3-lobe plastic wave reduction gear
-achieves 10 times higher rotational angle accuracy than other companies
2023 JSAE Automotive Engineering Exposition
Ultra-thin brushless DC motors
2023 JSAE Automotive Engineering Exposition
Ultra-thin brushless DC motors
2023 JSAE Automotive Engineering Exposition
Ultra-thin brushless DC motors
2023 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
-principle ratio of approx. 80 with 27mm shaft length
-efficiency of over 90
-low backlash and low starting torque
2023 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
-principle ratio of approx. 80 with 27mm shaft length
-efficiency of over 90
-low backlash and low starting torque
2023 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
-principle ratio of approx. 80 with 27mm shaft length
-efficiency of over 90
-low backlash and low starting torque
2023 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
-principle ratio of approx. 80 with 27mm shaft length
-efficiency of over 90
-low backlash and low starting torque
2023 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
-principle ratio of approx. 80 with 27mm shaft length
-efficiency of over 90
-low backlash and low starting torque
2023 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
-principle ratio of approx. 80 with 27mm shaft length
-efficiency of over 90
-low backlash and low starting torque
2023 JSAE Automotive Engineering Exposition
lightweighting / metal substitution
-aluminum substitute with weight saving effect of more than 30%
2023 JSAE Automotive Engineering Exposition
lightweighting / metal substitution
-aluminum substitute with weight saving effect of more than 30%
2023 JSAE Automotive Engineering Exposition
lightweighting / metal substitution
-aluminum substitute with weight saving effect of more than 30%
2023 JSAE Automotive Engineering Exposition
lightweighting / metal substitution
-aluminum substitute with weight saving effect of more than 30%
Automotive World 2023
Core holder assembly
‐ A product that integrates a wiring holder and a noise suppression core.
- Used for signal lines to control inverters, etc.
Automotive World 2023
Core holder assembly
‐ A product that integrates a wiring holder and a noise suppression core.
- Used for signal lines to control inverters, etc.
Automotive World 2023
Core holder assembly
‐ A product that integrates a wiring holder and a noise suppression core.
- Used for signal lines to control inverters, etc.
Automotive World 2023
Linked cores
- Small diameter cores are connected and integrated.
- Connections bend to fit cables.
Applications: Inverters, batteries, chargers
Automotive World 2023
Linked cores
- Small diameter cores are connected and integrated.
- Connections bend to fit cables.
Applications: Inverters, batteries, chargers
Automotive World 2023
Clamp core
- Can be installed without disconnecting cables.
Applications: Inverters, batteries, chargers
Automotive World 2023
Clamp core
- Can be installed without disconnecting cables.
Applications: Inverters, batteries, chargers
Automotive World 2023
Clamp core
- Can be installed without disconnecting cables.
Applications: Inverters, batteries, chargers
Automotive World 2023
Saturation-resistant core
- Use of core materials resistant to magnetic saturation
Automotive World 2023
Sheet for electromagnetic noise suppression
‐ Sheet is attached to circuit boards and other components in vehicle-mounted radars to suppress electromagnetic noise.
Automotive World 2023
Sheet for electromagnetic noise suppression
‐ Sheet is attached to circuit boards and other components in vehicle-mounted radars to suppress electromagnetic noise.
Automotive World 2023
Radar case
- Metal/resin bonding provides heat dissipation and shielding effects equivalent to a full metal case, and achieves as weight reduction.
Automotive World 2023
Radar case
- Metal/resin bonding provides heat dissipation and shielding effects equivalent to a full metal case, and achieves as weight reduction.
Automotive World 2023
Radar case
- Metal/resin bonding provides heat dissipation and shielding effects equivalent to a full metal case, and achieves as weight reduction.
2022 JSAE Automotive Engineering Exposition
Compact actuators
2022 JSAE Automotive Engineering Exposition
Plastic gears
2022 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
2022 JSAE Automotive Engineering Exposition
Ultra-thin 3K type planetary reduction gear
2022 JSAE Automotive Engineering Exposition
3-lobe plastic wave reduction gear
-Lightweight plastic reduction gear with 1/4 the mass of conventional reducers by using super engineering plastics.
2022 JSAE Automotive Engineering Exposition
3-lobe plastic wave reduction gear
-Lightweight plastic reduction gear with 1/4 the mass of conventional reducers by using super engineering plastics.
2022 JSAE Automotive Engineering Exposition
3-lobe type wave reduction gear
2022 JSAE Automotive Engineering Exposition
Millimeter wave radar case
2022 JSAE Automotive Engineering Exposition
Noise suppression core
Automotive World 2022
Millimeter wave radar case
-By applying a metal coating to the resin, it achieves the same shielding effect as aluminum while reducing weight. The bottom hole design also improves heat radiation performance.
Automotive World 2022
Millimeter wave radar case
-By applying a metal coating to the resin, it achieves the same shielding effect as aluminum while reducing weight. The bottom hole design also improves heat radiation performance.
Automotive World 2022
Compact actuator
-The use of high-strength resin gears with nano-fillers has made it possible to reduce the size of gears. This contributes to the miniaturization of actuators and other components.
Automotive World 2022
Compact actuator
-The use of high-strength resin gears with nano-fillers has made it possible to reduce the size of gears. This contributes to the miniaturization of actuators and other components.
Automotive World 2022
Compact actuator
-The use of high-strength resin gears with nano-fillers has made it possible to reduce the size of gears. This contributes to the miniaturization of actuators and other components.
Automotive World 2022
NMT (Nano Molding Technology) insert products
-This is a product that utilizes the composite molding technology of metal and resin by Taisei Plus. By creating minute irregularities in metals such as aluminum, iron, and stainless steel, the injection molding machine bonds resins such as PPS and PBT.
Automotive World 2022
NMT (Nano Molding Technology) insert products
-This is a product that utilizes the composite molding technology of metal and resin by Taisei Plus. By creating minute irregularities in metals such as aluminum, iron, and stainless steel, the injection molding machine bonds resins such as PPS and PBT.
Automotive World 2022
Noise suppression core
Automotive World 2022
Noise suppression core
Automotive World 2022
Noise suppression core
Tokyo Motor Show 2019
High performance noise suppression sheet
- UF type (0.5 – 30GHz ultra high frequency type) (left) - HF type (0.1 – 15GHz high frequency type) (middle) - WF type (0.01 – 15 GHz wide frequency type) (right)
Tokyo Motor Show 2019
High performance noise suppression sheet
- UF type (0.5 – 30GHz ultra high frequency type) (left) - HF type (0.1 – 15GHz high frequency type) (middle) - WF type (0.01 – 15 GHz wide frequency type) (right)
Tokyo Motor Show 2019
High performance noise suppression sheet
- UF type (0.5 – 30GHz ultra high frequency type) (left) - HF type (0.1 – 15GHz high frequency type) (middle) - WF type (0.01 – 15 GHz wide frequency type) (right)
Tokyo Motor Show 2019
Piston ring sets
- Thick film DLC piston ring set for passenger car gasoline engines (upper left) - For high-performance motorcycles (750cc motorcycles) (lower left) - 3-piece oil ring piston ring set for large natural gas engines (upper center) - Thick film DLC piston ring set for large diesel engines (upper right) - Low friction piston ring set for passenger car diesel engines (lower right)
Tokyo Motor Show 2019
Finger followers (DLC)
- High durability, low friction DLC (diamond like coating) finger follower
Tokyo Motor Show 2019
Valve lifters (DLC)
- Low friction DLC (diamond like coating) valve lifters
Tokyo Motor Show 2019
Valve lifters (DLC)
- Low friction DLC (diamond like coating) valve lifters
Tokyo Motor Show 2019
Plastic ball bearing cage
- High precision plastic cage (retainer) for high-speed bearings
Tokyo Motor Show 2019
Ball bearing assembly
Tokyo Motor Show 2019
Aluminum vanes
- Vanes for air conditioner compressors using low thermal expansion and high strength aluminum alloys
Tokyo Motor Show 2019
Aluminum valve spring retainers
- Light-weight motorcycle valve spring retainers made with low thermal expansion and high strength aluminum alloys
2019 JSAE Automotive Engineering Exposition
Connected Type Noise Suppression Core
-Concept exhibit. Solution proposal for noise suppression in autonomous vehicles. By connecting small cores, miniaturization and flexibility are achieved.
2019 JSAE Automotive Engineering Exposition
Connected Type Noise Suppression Core
-Concept exhibit. Solution proposal for noise suppression in autonomous vehicles. By connecting small cores, miniaturization and flexibility are achieved.
2019 JSAE Automotive Engineering Exposition
Noise Suppression Sheet for Millimeter-wave Radar (24GHz)
2019 JSAE Automotive Engineering Exposition
Noise Suppression Sheet for Millimeter-wave Radar (24GHz)
2019 JSAE Automotive Engineering Exposition
High-Performance Noise Suppression Sheet
2019 JSAE Automotive Engineering Exposition
Hollow Camshafts
2019 JSAE Automotive Engineering Exposition
Hollow Camshafts
2019 JSAE Automotive Engineering Exposition
Steering Knuckle
-Weight reduction of 10% realized with same materials and requirements due to new shape.
2019 JSAE Automotive Engineering Exposition
Steering Knuckle
-Weight reduction of 10% realized with same materials and requirements due to new shape.
2019 JSAE Automotive Engineering Exposition
Cast Steel Hollow Camshafts
2019 JSAE Automotive Engineering Exposition
Rotation Seal Rings for AT and CVT
2019 JSAE Automotive Engineering Exposition
Pulley Seal Rings for CVT
2019 JSAE Automotive Engineering Exposition
Turbo Seal Rings
2019 JSAE Automotive Engineering Exposition
Plastic Components
-Gears, Tip seals, Thrust Washers
2019 JSAE Automotive Engineering Exposition
Plastic Components
-Gears, Tip seals, Thrust Washers
Automotive World 2019
Steering Knuckle
-Uses self-developed high-strength/ductility materials with outstanding elongation and shock value to make the EV lighter
Automotive World 2019
Steering Knuckle
-Uses self-developed high-strength/ductility materials with outstanding elongation and shock value to make the EV lighter
Automotive World 2019
Aluminum Vanes
-Uses the "SHORIK" material that is lightweight and has low thermal expansion rate as well as high heat resistance
Automotive World 2019
Pulley Seal Rings for CVT
Automotive World 2019
Rotation Seal Rings for AT and CVT
Automotive World 2019
Turbo Seal Rings
Automotive World 2019
High-Performance Noise Suppression Sheet
-It features great noise suppression effect in high frequency bands
Automotive World 2019
High-Performance Noise Suppression Sheet
-It features great noise suppression effect in high frequency bands
Automotive World 2019
Thrust Washers (Plastic)
Automotive World 2019
Tip Seals (Plastic)
Automotive World 2019
Gears (Plastic)
Automotive World 2019
Scrolls and Pistons
-Uses the "SHORIK" material
Automotive World 2018
Seal ring
Automotive World 2018
Seal ring
Automotive World 2018
Seal ring
Automotive World 2018
Extruded material of aluminum powdered alloy
Automotive World 2018
Extruded material of aluminum powdered alloy
Automotive World 2018
Extruded material of aluminum powdered alloy
Automotive World 2018
Cast Iron Parts
Automotive World 2018
Cast Iron Parts
Automotive World 2018
Cast Iron Parts
Automotive World 2018
Cast Iron Parts
Tokyo Motor Show 2017
Piston Products
Kolbenschmidt　Products
Tokyo Motor Show 2017
Piston Products
Kolbenschmidt　Products
Tokyo Motor Show 2017
Piston Products
Kolbenschmidt　Products
Tokyo Motor Show 2017
Light Weight Material Technology
Tokyo Motor Show 2017
Light Weight Material Technology
Tokyo Motor Show 2017
High Performance Material Technology
Tokyo Motor Show 2017
High Performance Material Technology
Tokyo Motor Show 2017
High Performance Material Technology
Tokyo Motor Show 2017
Cast Iron Parts
Tokyo Motor Show 2017
Cast Iron Parts
Tokyo Motor Show 2017
Cast Iron Parts
Tokyo Motor Show 2017
Piston Rings
Tokyo Motor Show 2017
Piston Rings
Tokyo Motor Show 2017
Piston Rings
Tokyo Motor Show 2017
Piston Rings
Tokyo Motor Show 2017
Piston Rings
Tokyo Motor Show 2017
Piston Rings
Tokyo Motor Show 2017
Seal Ring Technologies
Tokyo Motor Show 2017
Seal Ring Technologies
Tokyo Motor Show 2017
Seal Ring Technologies
Tokyo Motor Show 2017
Seal Ring Technologies
Tokyo Motor Show 2017
Seal Ring Technologies
Automotive World 2016
Automotive World 2016
Turbo seal ring
-High precision and inexpensive
Automotive World 2016
Turbo seal ring
-High precision and inexpensive
Automotive World 2016
Turbo seal ring
-High precision and inexpensive
Automotive World 2016
Turbo seal ring
Automotive World 2016
Turbo seal ring
Automotive World 2016
-Contributes to good fuel economy
-Contributes to good fuel economy
Automotive World 2016
-Contributes to good fuel economy
-Contributes to good fuel economy
Automotive World 2016
-Offers high conductivity and wear resistance
-Offers high conductivity and wear resistance
Automotive World 2016
-Offers high conductivity and wear resistance
-Offers high conductivity and wear resistance
Automotive World 2016
"SHORIK" Low thermal expansion and High Strength Aluminum Alloy
-"SHORIK" Aluminum Alloy (quench-solidified aluminum powder alloy)
Automotive World 2016
"SHORIK" Low thermal expansion and High Strength Aluminum Alloy
-"SHORIK" Aluminum Alloy (quench-solidified aluminum powder alloy)
Automotive World 2016
"SHORIK" Low thermal expansion and High Strength Aluminum Alloy
-"SHORIK" Aluminum Alloy (quench-solidified aluminum powder alloy)
Automotive World 2016
"SHORIK" Low thermal expansion and High Strength Aluminum Alloy
Automotive World 2016
"SHORIK" Low thermal expansion and High Strength Aluminum Alloy
Automotive World 2016
Highly functional resin material
-The Company has a large share in Japanese oil seal market
Automotive World 2016
Highly functional resin material
-The Company has a large share in Japanese oil seal market
Automotive World 2016
Highly functional resin material
-The Company has a large share in Japanese oil seal market
Automotive World 2016
Highly functional resin material
-The Company has a large share in Japanese oil seal market
Automotive World 2016
Highly functional resin material
-The Company has a large share in Japanese oil seal market
Automotive World 2016
Highly functional resin material
Automotive World 2016
Highly functional resin material
Automotive World 2016
Highly functional resin material
Automotive World 2016
Highly functional resin material
Automotive World 2016
Highly functional resin material
Automotive World 2016
Highly functional resin material

MarkLines Customer Support

9:00 a.m. - 5:30 p.m. Mon.-Fri. (excluding national holidays)
japan Japan
Roppongi, Minato-ku, Tokyo, Japan
+81-3-4241-3907
USA USA
Novi, Michigan, USA
+1-248-327-6987
MEX Mexico
León Guanajuato, Mexico
+52-477-796-0560
DEU Germany
Frankfurt am Main, Germany
+49-69–904-3870-0
CHN China (Shanghai)
Huangpu District, Shanghai, China
+86-21-6212-6562
infoshanghai@marklines.com
CHN China (Shenzhen)
Nanshan District, Shenzhen, Guangdong
+86-755-2267-1725
THA Thailand
Klongtoey, Bangkok, Thailand
+66-2-665-2840
IND India
Gurgaon, Haryana, India
+91-124-4048779