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  6. High-Precision Jig Grinding for Optical Applications

High-Precision Jig Grinding for Optical Applications

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last updated:Nov 27, 2025

イシイ精機
イシイ精機
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It is possible to process large products over 1 meter in size with a CNC gantry-type grinding machine!

Our company specializes in contract jig grinding, importing and selling overseas jig grinding machines, and retrofitting jig grinding machines. Additionally, we provide on-site repair and maintenance for Moore jig grinding machines, repair and overhaul of grinding head motors, and technical guidance for jig grinding processes. We can handle a wide variety of machining and diverse materials, from material procurement to rough machining and finishing processes. We accept requests from all over Japan, so please feel free to contact us for any inquiries. 【Features】 ■ Two locations in Yokohama and Niigata ■ Jig grinding with precision of 0.001mm ■ High precision and high quality ■ Nationwide service *For more details, please download the PDF or feel free to contact us.

    Processing Contractjig
?光学向け

High-Precision Jig Grinding for Optical Applications

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?光学向け 画像.png
  • Related Link - https://www.jg-ishii.co.jp/site/

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basic information

【Specifications】 ■ Hole diameter: Accuracy guaranteed from φ0.8 to φ300, can be processed up to φ0.4 to φ600 according to machine specifications ■ Work size: Maximum 600mm × 1200mm × Z500mm (weight up to 1 ton) ■ Tolerance: H6/H7, roundness from 0.001mm and above ■ Equipment: 19 Moore jig grinding machines in total ■ Ancillary equipment: 3D measuring machine, roughness measuring machine, block gauges, pin gauges ■ Compatible materials: SKD, STAVAX, super steel, SUS, aluminum, copper, etc. (please consult us) ■ Process flow: Consultation → Meeting → Order → Processing → Inspection → Delivery *For more details, please download the PDF or feel free to contact us.

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【Application】 ■ High-precision hole machining ■ Machining of positioning reference holes ■ Alternative for finishing processes (post holes for press molds, bushing holes, knock pin holes, corner pockets for mold inserts, round holes, square holes, and irregularly shaped punches and dies with micron-order clearance) *For more details, please download the PDF or feel free to contact us.

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When it comes to jig grinding, Ishii Seiki.

When it comes to jig grinding, Ishii Seiki.

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イシイ精機

イシイ精機

Manufacturing and processing contract

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We are a company that sells "jig grinding" technology. Since our founding in 1968, we have continued to strive to be one-of-a-kind with our expertise in "jig grinding" as a technical group. We handle precision machine parts and mold jig grinding, constantly making efforts to enhance our technical capabilities and reduce our return rate to as close to "zero" as possible. This has earned us the trust of many customers, and we receive work from over 200 major automotive and home appliance manufacturers nationwide. Our commitment to quality work starts with "good equipment." We actively introduce jig grinding machines from Moore Tool Company, a long-established American manufacturer known for its world-class performance, and together with the skills of our operators, we challenge ourselves to deliver highly reliable work that exceeds the limits of jig grinding.

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