Trust and results: Over one million automobile components produced annually
Trust & performance

Tsuzuki Co., Ltd. has built trust and results in our many years spent supplying Japanese domestic automobile manufacturers with over one million automobile components annually.
We utilize advanced production technology to improve efficiency and achieve flexible production line designs, producing important functional components for automobiles that directly convey the driver's commands and providing the optimal QCD demanded by our customers.

Transmission components

The stator shaft is an important component of the CVT. Production of this component requires a high level of precision with tight tolerances in terms of roundness, cylindricity, and straightness. Load waveform data, generated by the process in which plugs are pressed into flanges, is stored via computer in order to achieve traceability for each and every unit produced.

Transmission components

Transmission components

Suspension and undercarriage components

Tsuzuki Co., Ltd. supplies the front knuckles produced for Japanese and European use in Honda cars, being the component that underlies Honda vehicles' internationally acclaimed driving capabilities. We also have the technology to achieve the reliable and safe lower control arms and damper forks that underlie front-wheel steering.

Front knuckles (long)


Front knuckles (short)


Lower control arm


Lower control arm (aluminum)


Damper forks


Automobile component types and quantity of units produced

We handle production types including the small-quantity production of individual pieces of equipment at machining centers, as well as medium-variety mass production via transfer machines.

  • Automobile parts: Medium-variety mass production

Volume/day Models/types Automated production line #3 for stator shafts Short knuckle transfer machine #1 Short knuckle transfer machine #3 Short knuckle transfer machine #2 Automated production line #2 for stator shafts Damper fork transfer machine Automated production line for rotor shafts Long knuckle transfer machine Automated production line #1 for stator shafts