セキダイ工業 List of Products and Services

We would like to introduce a machining case of the "throttle valve" that we conducted. Since the tool length of the cutting tool becomes longer, the key point is how to set the machining conditions to prevent the thin-diameter tool from vibrating. Due to the large protrusion of the projection, when machining the central pocket hole, the tool (ball end mill) must be inserted from the tip side of the projection. We used the "OKUMA MULTUS B200II" machining machine for production. 【Case Overview】 ■ Material: AZ31 (Magnesium) ■ Size: Φ35×55 ■ Machining Factory: Tokyo Headquarters ■ Remarks: Outer diameter Φ6 dimensional tolerance -0.010 to -0.018 *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a case of processing a prototype part, the "adapter," for motorcycle custom parts at our company. The processing machine used was the "OKUMA MU-400V II." It has a beautiful blue anodized finish, and although several years have passed since its production, there is no deterioration in appearance. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Material: A7075 ■ Size: Φ40×L50 ■ Processing Factory: Tokyo Headquarters ■ Remarks: Hard blue anodizing (unlike soft anodizing, it tends to discolor over time) *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of the processing of "funnels" that we conducted. Processed using a 5-axis machining center. The size is Φ60×L35, and we used A5052 as the material. Please feel free to contact us when you need our services. 【Case Overview】 ■Material: A5052 ■Size: Φ60×L35 ■Processing Factory: Tokyo Headquarters ■Remarks: Hard red anodizing 　(Due to its nature, it tends to discolor over time, unlike soft anodizing, resulting in fading) *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a machining case of "drive system components" that we conducted. We used a machining center for the processing machines. There are numerous high-precision tapered holes. Additionally, we used A2014 material and manufactured it in the size of Φ130×t20. Please feel free to contact us when you need our services. 【Case Overview】 ■ Material: A2014 ■ Size: Φ130×t20 ■ Processing Factory: Tokyo Headquarters ■ Remarks: Machined from block material *For more details, please refer to the related links or feel free to contact us.

• Processing Contract
• Drive system parts

We would like to introduce a case study of the processing of "heat sinks" that we conducted. The size is 60×160×160, and we used A5052 material for production. The valleys of this product are carefully machined with a Φ2 ball end mill. Additionally, we used the "OKUMA MB-46VAE" machining machine. Please feel free to contact us when you need assistance. 【Case Overview】 ■Material: A5052 ■Size: 60×160×160 ■Processing Factory: Tokyo Headquarters ■Remarks: Machined from block material *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a processing example of the "arm" that we conducted. Deformation is particularly likely to occur in the bifurcation area, so we processed it while relieving stress. We used the "OKUMA MB-56VA" machining machine. The size is 70×120×450, and we used SUS630 as the material for production. Please feel free to contact us when you need our services. 【Case Overview】 ■Material: SUS630 ■Size: 70×120×450 ■Processing Factory: Fukushima Factory ■Remarks: Machined from block material *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a processing example of the "injection pipe" that we conducted. The key point of the processing is the horizontally drilled hole that is opened just to the limit of penetration. While it is easy to process using a double-sided approach, achieving precise drilling from one side requires ingenuity. We used the "OKUMA MC-5VA," "OKUMA MC-600H," and "OKUMA MA-550VB" machining machines for production. 【Case Overview】 ■ Material: A7075 ■ Size: 50×100×360 ■ Processing Factory: Fukushima Factory ■ Remarks: Machined parts from block material *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of "body" processing that we conducted. At the time of production, we did not have a 5-axis machining center, but by utilizing a vertical machining center (with indexing) and jigs, we were able to manufacture a complex-shaped part with numerous holes from various angles. The size is 60×110×110, and the material used is A7075. Please feel free to contact us when placing an order. 【Case Overview】 ■Material: A7075 ■Size: 60×110×110 ■Processing Factory: Fukushima Factory ■Remarks: Machined from block material *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a case study of the processing of "covers" that we conducted. The size is 50×70×80, and we used PEEK material, which allows for lightweight construction while ensuring strength. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■Material: PEEK450G (Keton 1000 PEEK) ■Size: 50×70×80 ■Processing Factory: Tokyo Headquarters ■Remarks: Machined from block material *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of the processing of "throttle bodies" that we conducted. Using the highly acclaimed "KUMADAI Magnet," we manufactured this product. Sekidai Industry provides comprehensive support from material procurement to processing and surface treatment. Please feel free to contact us when you need assistance. 【Case Overview】 ■ Material: WZ75 (KUMADAI heat-resistant magnesium alloy) ■ Size: 90×70×50 ■ Processing Factory: Tokyo Headquarters ■ Remarks: Machined from a block *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of the processing of a "throttle body" that we conducted. Due to the need for lightweight and strength in the component, it was manufactured using PEEK material as a prototype. The processing machine used was the "OKUMA MU-400VA." Please feel free to contact us if you have any inquiries. 【Case Overview】 ■Material: PEEK450G (Ketrone 1000 PEEK) ■Size: 90×70×50 ■Processing Factory: Tokyo Headquarters ■Remarks: Machined from a block *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a processing example of "long pipes" that we conducted. Utilizing horizontal machining to the fullest, we processed pipe-shaped components with all holes being through holes. The finishing surface treatment is hard black anodizing. The processing machines used are "OKUMA MX-45VAE" and "OKUMA MB-46VAE." 【Case Overview】 ■Material: A7075 ■Size: 35×50×450 ■Processing Factory: Fukushima Factory ■Remarks: Machined from a block *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a machining case of "pistons" that we conducted. Using a multi-axis machining center "MULTUS," we processed aluminum cast piston raw materials, mostly in a single chuck setup. The size is Φ50×70, and we used AC8A-T6 as the material for production. Please feel free to contact us when you need assistance. 【Case Overview】 ■Material: AC8A-T6 ■Size: Φ50×70 ■Machining Factory: Tokyo Headquarters ■Remarks: Machining of cast materials for mass production, 200 units per year *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of the processing of "brake discs" for eco-race vehicles that we conducted. The material was purchased as a plate and processed using wire cutting. The size is Φ160×t2, and the material used is A2017. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Material: A2017 ■ Size: Φ160×t2 ■ Processing Factory: Tokyo Headquarters ■ Remarks: Material was purchased as a plate and processed using wire cutting *For more details, please refer to the related links or feel free to contact us.

• Processing Contract
• Brake parts

We would like to introduce a case study of the processing of a "dummy body" that we conducted. The material is A5052, and the size is 70×120×200, made from solid material through machining. Removing burrs after machining takes a considerable amount of time. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■ Material: A5052 ■ Size: 70×120×200 ■ Processing Factory: Tokyo Headquarters ■ Remarks: Machined from a block *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of "wheels" processed by our company. We performed black anodizing treatment and re-machined only the areas where blue anodizing was applied, and produced it with blue anodizing treatment. Please feel free to contact us when you need our services. 【Case Overview】 ■Material: A5052 ■Size: Φ270×60 ■Processing Factory: Fukushima Factory ■Remarks: Machined from a block *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of the processing of "injector joints" that we conducted. This is a joint component used to connect injectors, and the processing machine used is the "OKUMA MULTUS B200II." It falls under the category of fine parts within our company. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■Material: A7075 ■Size: t15×25×40 ■Processing Factory: Tokyo Headquarters ■Remarks: Machined from a block *For more details, please refer to the related links or feel free to contact us.

• Processing Contract
• joint

We would like to introduce a case where we processed a "TPS bracket" to secure the throttle position sensor. The machining was done using an "OKUMA MU-400VA," and the material used was A7075-T651. This is a relatively small precision part among the products we handle. Please feel free to contact us if you have any inquiries. 【Case Overview】 ■Material: A7075-T651 ■Size: t25×30×70 ■Processing Factory: Tokyo Headquarters ■Remarks: This is a relatively small precision part among the products we handle. *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

We would like to introduce a case study of the processing of "fuel pipes" that we conducted. The processing machines used were "OKUMA MB-46VAE," "OKUMA MC-600H," and "OKUMA MB-56VA." The fuel that is drawn in is designed to be ejected from the injector after passing through the regulator and fuel filter. 【Case Overview】 ■Material: SUS304 (Stainless Steel) ■Size: X40×Y300×Z45 ■Processing Factory: Fukushima Factory ■Remarks: (Rough Processing) MB-46VAE, (Horizontal Hole Processing) MC-600H, (Finishing Processing) MB-56VA *For more details, please refer to the related links or feel free to contact us.

• Processing Contract
• stainless

We would like to introduce a machining case of the "throttle valve" that we conducted. Due to the large protrusion amount, when machining the central pocket hole, it is necessary to insert the cutting tool (ball end mill) from the tip of the protrusion. Since the tool length becomes longer, the key point is how to set the machining conditions to prevent the thin-diameter tool from vibrating. The material used is A6061-T6, and it was manufactured at the maximum size that can be handled by MULTUS, which is Φ35×55. 【Case Overview】 ■ Material: A6061-T6 (Aluminum) ■ Size: Φ35×55 ■ Machining Factory: Tokyo Headquarters ■ Remarks: Outer diameter Φ6 dimensional tolerance -0.010 to -0.018 *For more details, please refer to the related links or feel free to contact us.

• Processing Contract
• aluminum

Sekidai Industrial Co., Ltd. specializes in "complex shape processing." We have the know-how to process 3D shapes using indexing, which we developed before the widespread adoption of CAD/CAM, and we have numerous achievements in manufacturing complex-shaped racing components. By allowing the processor to create the program, we unleash originality and creativity. Please feel free to contact us when you need our services. 【Advantages of Complex Shape Processing】 ■ Know-how in processing 3D shapes using indexing developed before the widespread adoption of CAD/CAM ■ Numerous achievements in manufacturing complex-shaped racing components ■ Unleashing originality and creativity by allowing the processor to create the program *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Sekidai Industrial Co., Ltd. specializes in "difficult-to-cut material processing." This processing involves machining materials that are difficult to handle during cutting using machining centers and lathes. It is the cutting of materials that have unique challenges compared to common cutting materials like aluminum and stainless steel. Difficult-to-cut materials include "hard-to-cut metal materials," "metal materials that are prone to ignition," and "materials that easily lose their shape." 【Characteristics of Difficult-to-Cut Materials】 ■ Metal materials with high cutting resistance and are hard to cut ■ Metal materials that are prone to ignition during cutting ■ Materials that crumble and lose their shape during processing *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

We received feedback from "Tokyo University of Science TUS Formula Racing," which has a track record of high rankings in the Student Formula competition. They faced a challenge regarding the machining of aluminum alloy for the upright, a key component related to the tires. However, due to being a student team, their funding was limited, and they struggled to find sponsors willing to support them. The reason they chose our company is that we provide high-precision and affordable machining every year, and they wanted to request our support for machining again this year using that technology. *For more details on the feedback, please refer to the related link. For further inquiries, feel free to contact us.*

• Processing Contract

We received feedback from Nakakichi Engineering, which widely handles machine parts, large vehicle electrical components, and special vehicle repair parts in Hiroshima. The company was founded in Hiroshima in 1919 and has been in operation for over 100 years. They supply factory equipment and production facilities primarily to the manufacturing industry, including automobile manufacturers. While searching for prototype processing companies on the internet, the phrase "speedy quotation" caught my eye, which led me to inquire and learn about Sekidai Industry. *For more details on customer feedback, please refer to the related link. For more information, feel free to contact us.*

• Processing Contract

"I am satisfied with the speed of product development." We had the opportunity to interview Mr. Nagai, the representative of the Eco Run Team "Wednesday Club." Through participation in the Honda Eco Mileage Challenge as a business activity, we aim for world records with innovative ideas and high technical and analytical skills. I learned about Sekidai Industries through a colleague's introduction. *For more details on customer feedback, please refer to the related links. For further inquiries, feel free to contact us.*

• Processing Contract

We received feedback from "IHI Turbo Co., Ltd.," which is engaged in the product development of turbochargers. They were looking for a processing manufacturer that could handle the machining of complex-shaped parts and difficult-to-cut materials considering heat resistance, while also providing product guarantees. Sekidai Industry has been able to flexibly respond to the strict deadlines required for the above challenges. *For more details on the customer feedback, please refer to the related link. For further inquiries, please feel free to contact us.

• Processing Contract

We received feedback from KANEHIRO, a company engaged in the sale of aluminum materials and machining both domestically and internationally. Founded in June 1948, we are a non-ferrous metal sales and parts processing manufacturer primarily focused on aluminum. Our clients mainly consist of automobile manufacturers, automotive parts manufacturers, and truck body manufacturers. We focus on mass production, with production at our Kumamoto factory and cooperation from various suppliers to conduct our business. The opportunity to learn about Sekidai Industry began when we purchased materials from them. Subsequently, there was a prototype project before mass production, and they provided support during that time. *For more details on customer feedback, please refer to the related links. For further inquiries, feel free to contact us.*

• Processing Contract

We received feedback from Mr. A of Y Corporation, who has actually requested parts manufacturing. We wanted to reduce the weight of the parts and planned to replace aluminum parts with magnesium parts. However, we had no prior experience with this and had many uncertainties, such as how to handle surface treatment. In such a situation, we received sincere consultation, and they successfully supported us from parts manufacturing to surface treatment. *For more details on the customer's feedback, please refer to the related link. For further inquiries, feel free to contact us.

• Processing Contract

We received feedback from a space aerospace engine research and development company that has actually requested parts manufacturing. They wanted to request the production of parts made from a material that is very difficult to obtain and not easy to process, but they had been turned away by every company they approached. They found Sekidai Industries and decided to consult with us. We reached out to several material suppliers and thought creatively about how to process the parts, including innovative approaches with tools. *For more detailed customer feedback, please refer to the related links. For more information, feel free to contact us.*

• Processing Contract

We would like to introduce a processing case of the "Intake Manifold" that we conducted. This product is a pipe that delivers air to the engine. It was planned and conceptualized by our company for an exhibition, and the design modeling was done by DOME CO., LTD. We pay attention not only to the appearance but also to the overall surface roughness, including the internal parts during processing. The highlight of the processing is the cutting of the bore inner diameter using a ball end mill. Please feel free to consult us when you need our services. 【Case Overview】 ■ Material: A7075 ■ Size: t120x250x350 ■ Processing Factory: Fukushima Factory ■ Remarks: Sample parts produced for an exhibition ■ Processing Machine: Five-axis Machining Center OKUMA MU-6300V *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

We would like to introduce a processing example of the sample virtual component "Fuel Pipe" by Dōmu Design Co., Ltd. To increase the amount of oil flowing inside the pipe, we have created three holes instead of just one. Normally, when attempting to process holes in a state where they are tangent to the originally existing holes, the cutting tool does not evenly transmit force to the workpiece, resulting in the tool breaking. Our company has devised a creative solution to resolve this issue. 【Case Overview】 ■ Material: A7075 ■ Size: 70x250x430 ■ Processing Factory: Fukushima Factory ■ Remarks: Sample parts produced for an exhibition *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

We would like to introduce a machining case of the "Throttle Body," designed and modeled by the racing car company Domu. Due to its very complex shape compared to general parts, the design of the machining process and jigs before processing is crucial. It must be manufactured using multiple machining machines, including vertical MC, horizontal MC, and 5-axis MC. The size of this product is 400x400x300, and it is made of A7075, produced as a sample part for an exhibition. 【Case Overview】 ■ Material: A7075 ■ Size: 400x400x300 ■ Machining Factory: Tokyo Headquarters ■ Remarks: Sample parts produced for an exhibition *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

We would like to introduce the machinability of our material "PEEK" in cutting processing. It has heat resistance, a low shrinkage rate, and is less likely to increase in temperature during cutting, which makes dimensions more stable. However, since many parts are used as substitutes for metal components, there tends to be strict dimensional requirements despite being resin parts. Compared to metals, PEEK has a higher shrinkage rate, so we set the processing conditions low and try to avoid raising the processing temperature as much as possible, while also leaving an appropriate allowance for anticipated shrinkage during processing. [Characteristics] - Heat resistant - Low shrinkage rate - Dimensions are more stable due to less temperature increase during cutting *For more details, please refer to the PDF document or feel free to contact us.

• plastic

We would like to introduce the characteristics and drawbacks of our material "PEEK." Its characteristics include excellent heat resistance with a continuous use temperature of 260°C, and a tensile strength of over 90 MPa, which is among the highest mechanical strengths in resins. Additionally, being a resin, it is naturally lightweight and has excellent chemical resistance, showing no discoloration or dissolution except with certain strong acids like concentrated sulfuric acid. The drawback is that the material has a high unit price, but it offers properties that can rival those of metals. Please feel free to consult us when you need assistance. 【Characteristics】 ■ Excellent heat resistance ■ Highest level of mechanical strength among resins ■ Excellent chemical resistance ■ Excellent radiation resistance ■ Naturally lightweight due to being a resin *For more details, please refer to the PDF document or feel free to contact us.

• plastic

We would like to introduce the machinability of our material "Inconel" in cutting processing. Due to its tendency to work harden, it leads to a shorter tool life and roughening of the finished surface. Because of its high affinity with tool materials, the machinability is poor, and it is referred to as a difficult-to-cut material. At our company, we try machining under various conditions and set optimal conditions for accuracy and productivity. Please feel free to consult us when you need our services. [Reasons for Poor Machinability] - High cutting resistance due to excellent heat resistance of the material - Tools tend to fail due to heat before the material, leading to quick breakage - Poor thermal conductivity prevents the temperature of the cutting edge from decreasing during processing - The tool life is shortened because the tool weakens due to heat - High affinity with tool materials causes the material to weld to the cutting tool *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

We would like to introduce the characteristics and drawbacks of our material "Inconel." This material excels in creep resistance and is less prone to deformation under sustained stress at high temperatures, making it suitable for use in rocket engines and F1 exhaust systems. It has the property of being almost corrosion-resistant even when left at temperatures between 650 and 900°C for 50 hours. However, it is difficult to process due to a lack of practical cutting data compared to other materials under conditions that worsen machinability. Additionally, it is expensive, which are its drawbacks. 【Characteristics】 ■ Excellent creep resistance ■ Outstanding corrosion resistance ■ Superior oxidation resistance at high temperatures *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

We would like to introduce the machinability of "titanium," classified as a difficult-to-cut material, using our compatible materials for cutting processing. The machinability is poor, with stickiness causing chips to adhere to the tools, which often necessitates multiple processes (such as rough machining → semi-finishing → finishing), particularly making it time-consuming to achieve precision machining. We are working to reduce costs by minimizing tool wear through the use of tools with suitable coatings, featuring uneven division and uneven lead. [Reasons for Difficult Machining] - Heat generated during cutting accumulates in the tool, shortening tool life. - The material is prone to deformation during processing, making it difficult to achieve dimensional accuracy. - Due to low resistance to friction, fine chips are produced during machining. - Being chemically active, it has a high flammability, making it prone to ignition. *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

We would like to introduce the characteristics and drawbacks of our material "Titanium." The characteristics include being lightweight and strong (among practical metals, it has one of the highest specific strengths), with a melting point of approximately 1,650°C, which is quite high. It generates a highly stable passive film that surpasses stainless steel. The drawbacks include its high strength, which can lead to tool damage or wear, making titanium classified as a difficult-to-machine material. It is indeed challenging to process and prone to deformation. 【Characteristics】 ■ Lightweight and strong (among practical metals, it has one of the highest specific strengths) ■ High melting point ■ Excellent corrosion resistance ■ Biocompatible *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

We would like to introduce the characteristics and drawbacks of our material "Magnesium." The characteristics include high tensile strength relative to its specific gravity, making it stronger than aluminum and iron when using the same weight. Its melting point is relatively low at about 650 degrees Celsius, allowing for easy recycling. The drawbacks include a relatively low ignition temperature of 400°C; however, in the case of large chips with a high surface area, it reacts well with oxygen and moisture in the air, making it prone to ignition. Additionally, pouring water on burning magnesium can cause a hydrogen explosion. 【Characteristics】 ■ The lightest metal among practical metals ■ High specific strength ■ Good dent resistance ■ High recyclability ■ Excellent vibration absorption *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

We would like to introduce the machinability of our material "magnesium" in cutting processing. The machinability (cutting performance) itself is very good, allowing for cutting with half the resistance of aluminum. However, it has a low Young's modulus, which is inversely proportional to its susceptibility to deformation, and care must be taken regarding warping, the risk of ignition, and susceptibility to corrosion. At our company, we use oil-soluble cutting oil in almost all machines, and we strive to reduce the risk of ignition by keeping dry sand for firefighting purposes on hand during processing. 【Surface Treatment】 ■ Chemical treatment ■ Coating ■ Anodized coating treatment ■ Electroplating *For more details, please refer to the PDF document or feel free to contact us.

• Other metal materials

Sekidai Industrial Co., Ltd. offers "machining processing." In recent years, with advancements in various technologies, the demand for more complex processing shapes and dimensional accuracy continues to rise. To meet these demands, we are continuously introducing machines such as "five-axis machining" and "universal milling" that enable the accumulation of know-how and high-quality finishes. [Types of Machining Processing] ■ Vertical Machining ■ Horizontal Machining ■ Five-Axis Machining *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract