セイコーインスツル List of Products and Services

A compact universal internal grinding machine that achieves precision and high-efficiency processing for a wide variety of products with an outer diameter of up to 160mm. ● Space-saving design Main body size: 1,600(W) × 1,615(D) × 1,320(H) mm ● Compact size design tailored to factories that prioritize equipment size and corresponding workpiece size ● Standard equipped with a high-output, high-rigidity in-house spindle (SSPG series) that contributes to improved productivity through high-precision and high-efficiency processing ● Chuck size: 6 inches

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.

We would like to introduce our processing case that has achieved high-precision machining of thin-walled workpieces. Workpieces that require internal grinding often demand not only roundness and surface roughness but also runout (coaxiality) relative to the outer diameter. This is particularly challenging for thin-walled workpieces, where deformation due to gripping becomes an issue. To address this, we have equipped our CNC internal grinding machine STG-6N, which we manufacture and sell, with a newly developed 2-roll 1-shoe spindle, enabling high-precision machining of thin-walled workpieces. 【Case Overview】 ■Challenges - Susceptible to deformation due to gripping ■Results - Uniform wall thickness relative to the reference workpiece's outer diameter - Dramatic improvement in coaxiality of the inner diameter relative to the outer diameter after machining - Reduced deformation of the workpiece due to gripping, leading to expected improvements in roundness *For more details, please refer to the PDF document or feel free to contact us.