{"product_id":"sumitomo-u103469-ceramic-turning-insert-tnga322-nb90s","title":"Sumitomo U103469 Ceramic Turning Insert TNGA322 NB90S","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SUMITOMO U103469 is an uncoated ceramic turning insert in the TNGA series, designed for precision single-point turning operations on CNC and manual lathes. It carries an ANSI designation of TNGA322 and a manufacturer grade of NB90S, identifying it as a ceramic, negative-rake geometry insert suited for high-speed finishing and semi-finishing passes. With a triangular insert shape and a 3\/8-inch inscribed circle, this insert delivers stable cutting geometry across a wide range of depths of cut. The corner radius measures 1\/32 inch (0.0313 inch), providing a balance of edge strength and surface finish quality. Weight is 0.05 pounds.\u003c\/p\u003e\n\u003cp\u003eThis insert is specified primarily for machining cast iron workpieces, corresponding to ISO material group K. The TNGA geometry with negative rake and N clearance angle suits interrupted and continuous cuts in hard, abrasive ferrous materials where ceramic tooling outperforms carbide at elevated surface speeds. Typical installation environments include production turning centers and job-shop lathes where high thermal resistance and wear life justify the use of ceramic grades. The A chip breaker designation applies to this insert for controlled chip flow during finishing operations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eUncoated ceramic insert material for high-speed machining of cast iron and abrasive workpieces\u003c\/li\u003e\n  \u003cli\u003eTNGA322 ANSI designation with negative rake geometry for stable, secure clamping\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch (0.3750 inch) inscribed circle for broad depth-of-cut range\u003c\/li\u003e\n  \u003cli\u003e1\/32-inch (0.0313 inch) corner radius balances edge toughness and surface finish\u003c\/li\u003e\n  \u003cli\u003eCompatible with clamp and pin insert-holding methods for rigid tool setups\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and ISO 13399 standards for interchangeable tooling identification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement turning insert for toolholders accepting TNGA-style inserts with clamp or pin holding methods, negative rake, and a 3\/8-inch inscribed circle per ANSI and ISO 13399 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of turning inserts should be performed by a qualified machinist or tooling technician with the machine fully powered down and the spindle locked. Use the appropriate torque wrench and manufacturer-specified clamping hardware to seat the insert securely in the pocket; do not overtighten or use substitute fasteners. Inspect the insert pocket for debris, damage, or wear before seating a new insert, as a compromised pocket will affect edge position and tool life. Handle ceramic inserts with care, as they are brittle and susceptible to chipping from impact or dropping.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Code\u003c\/strong\u003e: TNGA322\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: NB90S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Ceramic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Triangle (60 degrees included angle)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 3\/8 inch (0.3750 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1\/32 inch (0.0313 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 1\/8 inch (0.1250 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1500 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees (Clearance Code N)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Negative\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO Code K)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: G\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: TNGA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO 13399\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SUMITOMO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: U103469\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51735349166386,"sku":"U103469","price":23.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f22fec35796bf680fd5f8b52fe246fa5.jpg?v=1788772024","url":"https:\/\/voomisupply.com\/products\/sumitomo-u103469-ceramic-turning-insert-tnga322-nb90s","provider":"Voomi Supply","version":"1.0","type":"link"}