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  6. Improvement of production efficiency through reduced processing time - CNC internal grinding machine *Test processing available

Improvement of production efficiency through reduced processing time - CNC internal grinding machine *Test processing available

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『STG-6N』

last updated:Jun 25, 2026

セイコーインスツル 精密デバイス事業部 精機部
セイコーインスツル 精密デバイス事業部 精機部
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We will introduce a case where the introduction of our internal grinding machine has achieved a reduction in processing time and an improvement in accuracy!

The "STG-6N" is a CNC internal grinding machine equipped with a standard 6-inch scroll chuck. It features an easy-to-use human interface and a space-saving design. It is equipped with a proprietary low-vibration, high-precision high-frequency spindle. 【Examples of improved production efficiency through reduced processing time】 <Gear> ■Inner diameter size: φ40×37mm ■Material: SCM415 ■Processing time: 80% reduction ■Processing accuracy: Improved (Surface roughness Ra 0.1μm or less) <Ring Gauge> ■Inner diameter size: φ50×20mm ■Material: SKS31 ■Processing time: 56% reduction ■Processing accuracy: Improved (Roundness 0.3μm or less / Surface roughness Ra 0.1μm or less) <Collet> ■Inner diameter size: φ30×20mm ■Material: Carbide ■Processing time: 70% reduction ■Processing accuracy: Improved (Surface roughness Ra 0.1μm or less) *For more details on various examples, please contact us directly. *For more information on the internal grinding machine, please refer to the PDF document or feel free to contact us.

    Grinding Machine
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Improvement of production efficiency through reduced processing time - CNC internal grinding machine *Test processing available

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  • Related Link - https://www.sii.co.jp/mt/machine-tool/internal_gri…
  • Special site - Product/service details - https://pr.mono.ipros.com/sii/product/

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【Features】 ■ Space-saving design: 1,600(W)×1,615(D)×1,320(H)mm ■ High productivity and precision honed in mass production factories ■ User-friendly human interface ■ Equipped with in-house developed low-vibration, high-precision high-frequency spindle ■ Standard 6-inch scroll chuck included *For more details, please refer to the PDF document or feel free to contact us.

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CNC Internal Grinding Machine STG-6N

CNC Internal Grinding Machine STG-6N

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Notice of Participation in MEX Kanazawa 2025 (61st Kanazawa Machine Industry Exhibition) from May 15 (Thursday) to May 17 (Saturday), 2025.

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Seiko Instruments Inc. will be exhibiting at "MEX Kanazawa 2025 (the 61st Kanazawa Machine Industry Exhibition)" held at the Ishikawa Prefectural Industrial Exhibition Hall. At our booth, we will not only showcase high-precision and high-speed CNC internal grinding machines designed for internal processing that requires high machining accuracy, such as hydraulic components for construction machinery and automotive parts, but we will also display our completely in-house manufactured high-frequency spindles that support up to 150,000 RPM, featuring high precision, high rigidity, and long lifespan. We look forward to presenting proposals for achieving even higher machining accuracy and faster processing. We sincerely await your visit.

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Notice of Participation in "Grinding Technology Japan 2025" from March 5 (Wednesday) to March 7 (Friday), 2025.

  • Seminar・Event

Seiko Instruments Inc. will be exhibiting at "Grinding Technology Japan 2025," held at Makuhari Messe in Chiba Prefecture. This exhibition will not only present advanced information on grinding processing technology and tool manufacturing technology but will also provide information on skills and know-how. We will also be hosting the "Grinding Concierge," among other opportunities for discussion in various settings. We look forward to your visit.

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セイコーインスツル

セイコーインスツル 精密デバイス事業部 精機部

Industrial Machinery

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Seiko Instruments offers various grinding machines that achieve precision and high-speed processing based on the technology cultivated in watch manufacturing. We provide compact and energy-efficient internal grinding machines that are friendly to the factory environment, utilizing expert craftsmanship.

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