{"product_id":"sandvik-coromant-7861042-turning-insert-tcmt-coroturn-107","title":"Sandvik Coromant 7861042 Turning Insert Tcmt Coroturn 107","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 7861042 is a TCMT-style triangular turning insert engineered for precision metal cutting in CNC lathe and turning center applications. Built on the CoroTurn 107 platform, this solid carbide insert features a CVD-applied multilayer coating of Al2O3, TiN, and TiCN using the manufacturer grade 4425. The triangular insert geometry provides three usable cutting edges per insert. The PF chip breaker geometry is designed to promote controlled chip formation during light to medium finishing passes. With a 7\/32 inch inscribed circle and a 0.4 mm corner radius, this insert is suited for close-tolerance turning work on steel and cast iron workpieces.\u003c\/p\u003e\u003cp\u003eThis insert is intended for use in CoroTurn 107 toolholders that accept TCMT-style inserts with a screw and clamp holding method. Typical applications include finish turning and light roughing of steel components and cast iron parts in production machining environments. The neutral hand orientation makes it compatible with standard right-hand turning operations. This insert is commonly selected by CNC machinists and toolroom operators working on precision shaft, sleeve, and bore-facing operations where surface finish and dimensional accuracy are priorities.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: Al2O3, TiN, and TiCN for extended tool life on steel and cast iron\u003c\/li\u003e\n\u003cli\u003ePF chip breaker geometry promotes consistent chip control during finishing cuts\u003c\/li\u003e\n\u003cli\u003eThree usable cutting edges per insert maximize cost efficiency\u003c\/li\u003e\n\u003cli\u003eNeutral hand orientation suits standard right-hand toolholder setups\u003c\/li\u003e\n\u003cli\u003eScrew and clamp holding method provides secure seating under cutting loads\u003c\/li\u003e\n\u003cli\u003eCoroTurn 107 series compatibility ensures precise insert positioning and repeatability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CoroTurn 107 series toolholders accepting TCMT-style inserts with screw and clamp mounting. ISO code TCMT 09 02 04-PF 4425. Primary workpiece material is steel; secondary workpiece material is cast iron.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert replacement should be performed by a qualified CNC machinist or toolroom technician with the machine in a full stop condition and all axes locked. Use the correct torque wrench and manufacturer-specified screw hardware when seating the insert to avoid cracking the carbide substrate. Inspect the insert pocket and clamping surfaces for chips or debris before installing a new insert. Follow applicable shop safety procedures and machine lockout protocols before any tooling change.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TCMT\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\u003eSeries\u003c\/strong\u003e: CoroTurn 107\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 4425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Al2O3, TiN, TiCN (CVD process)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: PF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 7\/32 inch (0.2188 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.40 mm (0.0156 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3\/32 inch (0.0938 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.0984 inches (2.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHolding Method\u003c\/strong\u003e: Clamp and Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: TCMT 09 02 04-PF 4425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.44 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SANDVIK COROMANT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7861042\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51730757812530,"sku":"7861042","price":196.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/35a5391bc75c919793cc740ef1de807a_f4a18eb4-81d2-4be1-8347-e9e363eab331.jpg?v=1788722356","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7861042-turning-insert-tcmt-coroturn-107","provider":"Voomi Supply","version":"1.0","type":"link"}