Company history

1970
As a professional manufacturer of a coupling for power transmission.


It’s established in Chiko, Nogata-shi, Fukuoka A capital of 5,000,000 yen.

1973
In a present location and a gracious deity industrial park, new factory construction
1974
I begin to operate completely in a new factory.
1975
Osaka business office (Shin-osaka) continues, and Tokyo business office (Kamata) is established.
1980
The authorization document acquisition which is the following ship order after authorization document.


acquisition of a Japanese society of maritime affairs (NK)


The Ministry of Transport navigation bureau (JG)


The Englishman order (LR)


The France ship order (BV)


The American ship order (ABS)


The Norweigian vessel order (NV)


The Korean ship order (KR)

1981
A computer for production management by NTT is introduced.


I plan for clerical employee’s automation.


To measure expansion of a product line with development of business, all kinds’ after automation machine is introduced.

1990
Integrated manufacturing control system is introduced by cooperation with NTT Data communication corporation,-CIM
1991
CAD system Me-10 made of Yokogawa Hewlett Packard Co. is installed.
1994
Coupling manufacturing payment for driven reactor control rod.
1995
A barrel spring coupling is developed as vibration and for impact absorption, in 7 worlds, patent acquisition


(Japan, Germany, France, United Kingdom, United States, Korea and Taiwan)

1996
It’s made a capital of 10,500,000 yen.
1998
It increases the level in next generation integrated manufacturing control system by NTT Data communication corporation.
2000
Gear coupling for Panama Canal trains Payment.
2002
The capital is increased in a capital of 15,500,000 yen.


A new product SD coupling (patent 3179435) sale.

2004
In the super-low-floor train, the steepness type gear coupling adoption


NSL elasticity coupling (patent) sale.

2007
Fine manufacturing 300 company Ministry of Economy, Trade and Industry winning a prize of small and medium enterprises.


Headquarters Management and the 2nd factory establishment.

2010

Started joint development with Saga University


“Development theme: Development of high-performance gear couplings”

2011

Acquisition of world’s first patent for non-involute tooth profile NTF technology

2012

Succeeded in developing gear coupling dedicated tooth flank grinding machine

2013

Completion of original train gear couplings using NTF technology

2015

Adopted for Ministry of Economy, Trade and Industry subsidized project “Strategic Fundamental Technology Advancement Support Project (Supporting Subsidized Project)”

2016

Succeeded in in-house development of a rotary vibration tester that can reproduce the running state of a train.


Acquisition of ISO9001 certification at Development Division

2019

Certified by Ministry of Economy, Trade and Industry as “300 Small and Medium Enterprises”

2020

Completed development of “Type KH224H” gear coupling for high-speed trains.


New painting and assembly plant dedicated to train products