Bold and delicate


manufacturing that is faithful to the basics

We can only realize with ceramics
We manufacture products with overwhelming advantages.
Altitude that only craftsmen can do, satisfying submicron accuracy
Please see the products manufactured by various technologies.

For precision processing of ceramics
Please leave it to Sanyu Tokusyu Seiko Co., Ltd.

Our company was founded in 1967 as a measuring gauge processing manufacturer.
The processing equipment started from the state of two.
Shortly after opening, we will start processing cemented carbide.
We have set a goal for difficult-to-cut materials in order to differentiate ourselves from others.

Products

Please see below for examples of ceramics applications.

Zirconia ceramics


Cylindrical Pipe

This sample is made of zirconia ceramics, has an inner diameter of φ14 mm and a total length of 100 mm, and exceeds 7 when converted to an L / D ratio. The cylindricity of this pipe is 0.3 μm, which is extremely accurate.

Silicon Nitride Ceramics


Thin-walled Pipe

This sample is made of silicon nitride and has a cylindrical shape with an inner diameter of about 2.5 mm and an inner diameter of φ30 mm and a total length of 40 mm. The cylindricity of the inner diameter is finished to 0.23 μm.

Zirconia ceramicsInner


diameter groove ring

In the case of ceramics, since electricity is not conducted, it is not possible to machine grooves by electric discharge machining. Even for such workpieces, we can accurately process the roundness of the inner diameter.

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Commitment

Our thoughts

With the times, customer needs have changed, and the products we manufacture have also changed.
I would like to continue to be involved in manufacturing that is useful to you.
It would be a great pleasure to know about our company through this website.
We sincerely hope that your needs will match our processing technology and that it will be useful.

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Concept

Difficulty of 1 μm

At our company, the average manufacturing tolerance of products such as jigs and tools was about 5 μm.
However, with the times, many products require gauge-level accuracy.
In addition to the absolute value, some products have roundness, straightness, runout of inner and outer diameters, and the squareness of the end face with respect to the inner diameter of 1 μm or less.
The number 1 μm changes even if you touch it with your bare hands or take a sigh.
A small amount of measurement error will occur.
Regarding the absolute dimensions, we pay close attention to the processing while matching the accuracy with the customer.

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Ceramic

Ceramics

Equipment

Equipment

News & Topics

Sep 21

ITC Fukuoka 2023

ITC (International Tribology Conference) Fukuoka 2023 is will be held in Fukuoka City, Japan from September 25 to 30, 2023. We will participate in the poster session. The title of the poster session is "Water lubrication characteristics of silicon nitride supporting nanosilica particles of different particle sizes".

The objective is to construct a water lubrication system that is both carbon neutral and energy efficient by using water as a lubricant to achieve ultra-low friction on sliding surfaces.

We hope you will pay close attention to our research trends in the future.

May 08

Inner diameter processing of long alumina pipe

This sample is a prototype of a alumina ceramics with an outer diameter of 26 mm, an inner diameter of 22 mm, and a length of 192 mm as a long alumina pipe.

We finished the inner diameter, but since the aspect ratio (L / D ratio) exceeds 8 processing becomes very difficult thing.



The image shows a measurement scenery of cylindricity.
You can understand the longness of the sample from the size on the measuring table.

The measurement results of this sample are as follows.

Sep 08

Small diameter mold ULTRA PRECISION MACHINING

This sample is a prototype of a zirconia ceramics with an outer diameter of 7 mm, an inner diameter of 3 mm, and a length of 6 mm as a small diameter ceramics mold.

Required accuracy for this sample is very severe.
Roundness of 3 mm inside diameter, cylindricity within 0.0005, squareness to inner diameter and end face is within 0.0005.




The photograph shows a measurement scenery of roundness, cylindricity, squareness.
I think that you can understand the smallness of the sample from the size on the measuring table.

The measurement results of this sample are as follows.



We have cleared 0.0005 for both the roundness and the cylindricity.



Even though processing of the squareness is very difficult, we cleared 0.0005 here.

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