**Campaign Overview** We are offering a limited-time special price on SII's internal grinding machine STG series. ◆ Eligible Models - General-purpose internal grinding machine STG-3NX (4-inch scroll chuck specification) - 2 units - General-purpose internal grinding machine STG-6N (6-inch scroll chuck specification) - 1 unit ◆ Conditions - The eligible models will be SII standard specifications. - Orders must be placed by the end of March 2025. * Please consult separately regarding delivery times. * This offer will end once the above quantity is reached. Thank you for your understanding. <Contact Information> Seiko Instruments Inc. Precision Devices Division, Sales Department, Sales Section 3 TEL: 047-392-2091 FAX: 047-392-2476 Email: naiken@sii.co.jp

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 (concentricity) 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 developed a new 2-roll 1-shoe spindle, which has been installed in our CNC internal grinding machine STG-6N, enabling high-precision machining of thin-walled workpieces.