{"product_id":"hertel-h59874107-boring-insert-tpcb221-ht310b-solid-carbide","title":"Hertel H59874107 Boring Insert TPCB221 HT310B Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL H59874107 is a solid carbide boring insert in the TPCB221 geometry, manufactured to grade HT310B and supplied uncoated. It features a 60-degree triangular shape with an 11-degree relief angle, a 1\/4-inch inscribed circle, a 3\/32-inch thickness, and a 1\/64-inch corner radius (0.0150 inches decimal). The insert is held in place via a screw-clamp method and carries a material grade designation of C25. Machining professionals and toolroom technicians use this insert for precision boring operations where a sharp, uncoated solid carbide edge is required for close-tolerance internal diameter work.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for boring applications on CNC turning centers, boring bars, and dedicated boring heads in production and job-shop environments. The TPCB-style geometry with a 60-degree included angle is a common triangular configuration used in light-to-medium material removal on a range of workpiece materials where the C25 carbide grade is appropriate. The screw-clamp holding method provides positive indexing and repeatable edge positioning during setup. This insert ships individually with a minimum order quantity of 10 units per order.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction, uncoated, material grade C25\u003c\/li\u003e\n  \u003cli\u003e60-degree triangular shape (TPCB221) with 11-degree relief angle\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch inscribed circle (0.2500 inches) for precise boring bar compatibility\u003c\/li\u003e\n  \u003cli\u003e1\/64-inch corner radius (0.0150 inches decimal) for tight-tolerance boring\u003c\/li\u003e\n  \u003cli\u003e3\/32-inch thickness (0.0960 inches decimal) for stable seating in the pocket\u003c\/li\u003e\n  \u003cli\u003eScrew-clamp insert holding method for secure, repeatable indexing\u003c\/li\u003e\n  \u003cli\u003eManufacturer grade HT310B for defined cutting performance classification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-replacement or standard-stock boring insert for toolholders and boring bars accepting TPCB221-style triangular inserts with a screw-clamp seating method and a 1\/4-inch inscribed circle. Verify pocket geometry and insert seat dimensions against your specific boring bar specification before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert installation and indexing should be performed by a qualified machinist or toolroom technician with the machine powered down and locked out per OSHA lockout\/tagout procedures. Use the correct torque driver or insert screw tool specified by the boring bar manufacturer when seating the screw-clamp fastener. Inspect the insert pocket for chips or debris before seating a new or indexed insert to ensure full contact and prevent edge chipping. Handle solid carbide inserts carefully to avoid chipping cutting edges during storage and setup.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TPCB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 221\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Triangle, 60-degree included angle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 11 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 3\/32 inch (0.0960 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1\/64 inch (0.0150 inches)\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: C25\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: HT310B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Uncoated\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 per package\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: H59874107\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51736729583922,"sku":"H59874107","price":268.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4a007e0caaf4cf5747ed4f95f507aa7c.jpg?v=1788779568","url":"https:\/\/voomisupply.com\/products\/hertel-h59874107-boring-insert-tpcb221-ht310b-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}