Top Seiko Co., Ltd

Top Seiko Co., Ltd. specializes in precision work of ceramics, glass, and refractory metals. From deep hole drilling to 3D
machining, our professional skill, and knowledge about materials enable us to do a range of processing, which other
companies cannot. We offer not only machining service, but also material selection service and development assistance service.

One of our advantages is the lead time. In general, manufacturing materials of ceramics or refractory metals takes 2-3 months, and that delays the total lead time of ceramics or refractory metal parts. But Top Seiko carries stocks of those materials to shorten the lead time to only 1 month. It sometimes depends on the specification of the parts you need, and please feel free to send us an inquiry first.

You can find the details of the materials we use below.

<<<Material & Properties List>>>

(Ceramics)
-Alumina(Al2O3) 99.5% -*Electrical insulation, High hardness, High heat-resistance, Wear resistance
-Zirconia(ZrO2) -*Wear resistance, Low thermal-conductivity
-Aluminum Nitride(ALN) -*High thermal-conductivity[170 W/(m.K)], Electrical insulation, High thermal-shock-resistance
-Silicon Carbide(SiC) -*Electrical insulation, High hardness, High thermal-conductivity, Chemical resistance
-Machinable Ceramics -*Electrical insulation, Heat resistance
>Machinable Ceramics includes Macor, Photoveel, Macerite, etc.

(Composite Materials)
-Metal Matrix Composites(MMC) -*Electrical conductivity,Heat resistance,High thermal-conductivity
-Ceramic Matrix Composites(CMC) -*Heat resistance,Lightweight, High strength

(Glass)
-Quartz Glass(SiO2) -*Electrical insulation, Heat resistance, Low thermal-conductivity, Thermal-shock-resistance, Chemical resistance
-Sapphire Glass (Al2O3) - *Electrical insulation, High thermal-conductivity at low temperatures
-TEMPAX Float Glass(Schott) -*Electrical insulation, Heat resistance, Low thermal-conductivity, Thermal-shock-resistance
/Pyrex Glass(Corning)

(Refractory Metals)
-Molybdenum (Mo) -*High heat resistance (melting point: 4,753F), High thermal-conductivity, Low thermal-expansion
-Tungsten (W) -*High heat resistance (melting point: 6128F), Lowest thermal-expansion among metals, High density
-Tantalum (Ta) -*High heat resistance (melting point: 5414F), Chemical resistance, High density
-Niobium (Nb)
-Nickel (Ni)

Any Questions?
To learn more about our services, check our website, and feel free to contact us!! Our technical sales team is ready to support you on your project needs from prototype to production. We are looking forward to hearing from you.

Message from CEO

In the years since Top Seiko was founded in 2001, there were times when we were faced with big challenges. However, we managed to survive and grow during these tough times. Of course, we could not do it on our own. I would like to thank all of our customers, our suppliers, and the other people concerned for their supports, guidance, and encouragement.

#Aiming to be the Best

Our company was named “Top Seiko” to express its business goal of becoming the top precision machining and manufacturing company in the world. “Seiko” is a Japanese word meaning “precision machining” Being a newly established small company, we quickly found that the competition between machining companies of common industrial materials was too intense for us to even survive. To achieve our goal, we decided to focus only on our specialty, which was precision machining of ultra-hard and brittle materials such as glasses, ceramics, and refractory metals.

#Expanding our Machining Capabilities

These exotic, hard materials can present greater machining challenges compared to other industrial materials. Even so, machining each of these materials is a phenomenon governed by physical law. And I strongly believe that if we can discover and follow the law, even these brittle, abrasive, difficult-to-machine materials can be machined successfully into precision parts. There is no exception. There are always physical reasons for a failure, which we must find. With that belief, we have been tackling challenges and further expanding our machining capabilities.

#Growing Further

We initially started out in manufacturing components for a few customers in the semiconductor and electronics industries, but now we serve customers in a wide variety of industries including aerospace, automotive, aviation, medical, and measuring & analytical. As a solution provider for our customers, we have responded to their unique needs. Thankfully, with an increasing number of customers, our plant has been operating at full capacity. To increase production capacity and respond to a wider range of needs, we are now building a new plant that comprises up-to-date equipment and is scheduled to commence operation in 2017. We will make a collective effort to stay competitive and continue to provide solutions to our customers for centuries to come.
Once again, we would like to thank all the people concerned for their continued supports, guidance, and encouragement.

Top Seiko Co., Ltd.
Yoichi Azai CEO