{"product_id":"hertel-h59874669-boring-insert-tpch220-5-hc620b-carbide","title":"Hertel H59874669 Boring Insert TPCH220.5 HC620B Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL H59874669 is a solid carbide boring insert designed for precision internal boring operations on CNC and manual turning equipment. Formed in a 60-degree triangle shape and designated by insert style code TPCH, this insert features a multilayer CVD coating sequence of TiN, TiC, TiCN, and TiN that builds wear resistance and thermal stability during cutting. The 0.007-inch corner radius suits finishing and semi-finishing passes where edge sharpness and dimensional control are the priority. At a material grade of C7, this insert is suited for boring cast iron, steel, and similar ferrous workpiece materials. Licensed machinists and toolroom technicians are the typical end users.\u003c\/p\u003e\n\u003cp\u003eThis insert is applied in boring bar holders that accept the TPCH insert style with screw clamping. The 11-degree relief angle reduces rubbing on the bore wall during the cut. With a 1\/4-inch inscribed circle and 3\/32-inch thickness, this insert fits compact boring heads used in both job-shop and production environments. It is sold individually per package with a minimum order quantity of 10 units, making it a standard replenishment item for shops that run this insert style at volume.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate at material grade C7 for rigidity and wear life in ferrous boring applications\u003c\/li\u003e\n  \u003cli\u003eMultilayer CVD coating  -  TiN, TiC, TiCN, TiN  -  for thermal resistance and extended tool life\u003c\/li\u003e\n  \u003cli\u003e60-degree triangle shape (TPCH style) with screw-clamp holding method for positive insert retention\u003c\/li\u003e\n  \u003cli\u003e0.007-inch corner radius for finishing and semi-finishing passes requiring tight tolerances\u003c\/li\u003e\n  \u003cli\u003e11-degree relief angle reduces bore-wall contact and minimizes chatter during internal operations\u003c\/li\u003e\n  \u003cli\u003eCompact geometry: 1\/4-inch inscribed circle, 3\/32-inch thickness  -  fits standard small-bore tooling systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in boring bar systems and insert holders that accept TPCH-style triangle inserts with screw clamping, consistent with standard ISO and ANSI insert seating for this style code.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert seating and clamping should be performed with the machine spindle locked and all power isolated from the machine tool before any tooling change. Use the correct torx or hex key at the manufacturer-specified seating torque for the boring bar clamping screw  -  do not overtighten, as carbide inserts are brittle and will crack under excess clamp force. Verify insert orientation and relief angle clearance in the holder before resuming cuts. Worn or chipped inserts should be replaced rather than re-run to avoid workpiece damage and unpredictable tool behavior.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TPCH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 220.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Triangle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: HC620B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Finish\u003c\/strong\u003e: TiN, TiC, TiCN, TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.007 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.096 inches (3\/32 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 11 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: H59874669\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51742074929458,"sku":"H59874669","price":295.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/49a80f80217fd9136ab2ec40d515da9f.jpg?v=1788835226","url":"https:\/\/voomisupply.com\/products\/hertel-h59874669-boring-insert-tpch220-5-hc620b-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}