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  3. KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
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KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)

EstablishmentDecember 26, 1957
capital3000Ten thousand
number of employees100
addressTokyo/Shinjuku-ku/2-5-2 Hyakunincho
phone03-3363-3711
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last updated:Nov 20, 2025
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KOYAMA CO., LTD. Product Lineup

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Fastening parts Fastening parts
Assembly, inspection equipment, tools Assembly, inspection equipment, tools
Precision machining and molded products Precision machining and molded products
Safety, Protection, Environmental Products Safety, Protection, Environmental Products
Automated transport robot "Souther" Automated transport robot "Souther"
Loosening prevention processing Loosening prevention processing
お役立ち資料 お役立ち資料
ネジスターσ ネジスターσ
搬送ロボット「カチャカプロ」 搬送ロボット「カチャカプロ」
熱中対策ウォッチ「カナリアプラス2026」 熱中対策ウォッチ「カナリアプラス2026」
Precision

Precision machining and molded products

Precision machining and molded products

Large RIM molded products [Achieving better design at a lower cost]

More freedom and affordability in large plastic molding.

"We want to achieve better design at a lower cost." Achilles Teflon responds to such requests from designers and engineers. By adopting RIM molding, it realizes numerous advantages such as "larger molded products" and "freedom of design" without being constrained by the limitations of conventional injection molding or vacuum/pressure molding. Additionally, unlike standard injection molding, Achilles Teflon offers three types to choose from based on application, expanding new possibilities for product design. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.*

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【プラスチックの加工品ならお任せ!】樹脂切削品・成型品

多種多様な成形品をご用意!数量・大きさ・形状により適切な成形方法も提案可能

当社で取り扱っている「樹脂切削・成型品」についてご紹介いたします。 インジェクション成形をはじめ、RIM成形や、各種ゴム成形品、真空・圧空 成形、押出し成形など、多種多様な成形品をラインアップ。 また、数量・大きさ・形状により適切な成形方法をご提案いたします。 ご用命の際は、お気軽に当社までお問い合わせください。 【ラインアップ(一部)】 ■インジェクション成形 ■RIM成形 ■各種ゴム成形品 ■真空・圧空成形 ■押出し成形 ※詳しくはPDFをダウンロードしていただくか、お気軽にお問い合わせください。

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We will make the best proposal for you. Please leave all your metal processing needs to us!

Iron, SUS, aluminum, copper, titanium, etc. Please consult us first, even for old drawings!

We would like to introduce the "metal processed products" that we handle. "Precision machined parts" can accommodate plating and painting, and we can source from overseas manufacturers (China, Vietnam, etc.) in addition to domestic manufacturers. Additionally, we can propose the best manufacturing methods using various techniques such as "press and sheet metal processing," "die casting, lost wax, and gypsum casting," and "MIM molding and sintering," as well as "extrusion and drawing." 【Features】 <Precision Machined Parts> ■ NC lathe processing, machining, milling, etc. ■ Materials: Steel, SUS, aluminum, copper, titanium, and others ■ Quantity: Can accommodate from 1 to tens of thousands ■ Can accommodate plating and painting ■ Sourcing from overseas manufacturers (China, Vietnam, etc.) is also possible *For more details, please download the PDF or feel free to contact us.

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"Processing of plastic, rubber, and sponge" Achieved with short delivery times and low costs!!

Leave it to us for resin processing such as plastic, rubber, and sponge!

<Strengths> - Using NC cutting machines, we achieve "time reduction" and "multiple operations"! - Special processing is possible with "NC control"! High precision is achieved! - Thanks to NC cutting machines, we can handle everything from small lots of various types to mass production without the need for molds! - Since there is no time required to create molds, we can produce on the same day as long as we have the materials! <Five Pillars of Core Business> 【Plastic Processing】 【Rubber, Sponge, and Foam Materials】 【Containers and Custom-Made Dividers】 【Jig Manufacturing】 【Product Development】

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Lightweighting using large RIM molded products for automobiles

Large-scale plastic molding for lightweighting in automobiles.

In the automotive industry, reducing vehicle weight is a crucial challenge for improving fuel efficiency and reducing CO2 emissions. To achieve weight reduction, it is essential to change the materials of components and reconsider their structures. Achilles Teflon's RIM molding allows for more flexible designs compared to traditional injection molding, enabling shape designs that contribute to weight reduction. This allows for greater design freedom, balancing lightweight construction with aesthetic appeal. 【Application Scenarios】 - Automotive parts (interior, exterior) - Parts that require weight reduction - When wanting to enhance design flexibility 【Effects of Implementation】 - Improved fuel efficiency due to weight reduction - Increased design flexibility - Potential cost savings

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Large RIM molded products for medical devices

Achieving design flexibility and cost reduction in medical devices.

In the medical device industry, there is a demand for miniaturization, lightweight design, and high precision of products. Particularly for medical devices that support patient safety and accurate diagnosis and treatment, the precision of component shapes and durability are crucial. Traditional molding methods have limitations in design flexibility and cost, but our large RIM molded products address these challenges. 【Application Scenarios】 - Precision medical device components - Complex-shaped medical device housings - Medical devices requiring durability 【Benefits of Implementation】 - Improved design flexibility - Cost reduction - Realization of high-quality products

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Large RIM molded products for construction machinery

Achieving large-scale plastic molding for construction machinery more freely and at a lower cost.

In the construction machinery industry, there is a demand for large components that balance product durability and design. Particularly for parts used in harsh environments, high impact resistance and weather resistance are crucial. Traditional molding methods may impose constraints on design flexibility and cost. Achilles Teflon RIM molding addresses these challenges. 【Application Scenarios】 - Large exterior parts for construction machinery - Interior parts - Various covers 【Benefits of Implementation】 - Improved design flexibility - Cost reduction - Achievement of high durability

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Large RIM molded products for railway vehicle interiors

Achieving interior design for railway vehicles with high flexibility and cost efficiency.

In the interior design of railway vehicles, a balance between aesthetics and functionality is required. In particular, safety and durability are crucial, and high quality is demanded for interior components. Additionally, cost is an important factor, and efficient manufacturing methods are sought. Achilles Teflon, through RIM molding, achieves "large-scale molded products" and "freedom of design" without being constrained by the limitations of traditional injection molding or vacuum and pressure molding. This expands the possibilities for interior design in railway vehicles and enables the realization of high-quality interior components at a lower cost. 【Application Scenes】 - Interior components such as seats, walls, and ceilings of railway vehicles - Interior components with high design quality - Large and complex-shaped interior components 【Effects of Implementation】 - Increased design freedom - Cost reduction - Realization of high-quality interior components

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Koyama Co., Ltd. Company Profile

We are a specialized trading company that solves customer problems in a wide range of fields related to manufacturing!

Koyama Co., Ltd. is a specialized trading company that handles a wide range of industrial materials, including screws, cold-formed parts, springs, and pressed parts. We offer a diverse array of products such as fastening components, various metal processed products, and resin cutting and molding products. Additionally, we also provide our original product, the "Screw Tightening Reminder Counter." 【Business Activities】 ■ Screws, cold-formed parts, springs and pressed parts, precision machined parts, adhesives, sealants, machine tools, labor-saving equipment, design and development of AGVs and peripheral equipment, precision molded products, static electricity countermeasures, development and sales of environmental improvement products, electronic components, connectors, wire and harness processing. *For more details, please refer to our catalog or contact Koyama Co., Ltd.

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