{"product_id":"sandvik-coromant-7859127-turning-insert-scmt-coroturn-107","title":"Sandvik Coromant 7859127 Turning Insert Scmt Coroturn 107","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 7859127 is a SCMT-style square turning insert designed for external turning operations on CNC lathes and turning centers. It carries the ISO designation SCMT 09 T3 08-PM 4415 and belongs to the CoroTurn 107 series. The insert is manufactured from carbide substrate and features a multilayer CVD coating of TiCN, Al2O3, and TiN, delivering hardness and thermal resistance suited for productive steel and cast iron turning. The PM chip breaker geometry is engineered for reliable chip control across a range of feed rates and depths of cut. Licensed machinists and CNC operators working in metalworking shops are the primary installers.\u003c\/p\u003e\u003cp\u003eThis insert is suited for external turning, profiling, and light boring on steel and cast iron workpieces in both production and job-shop environments. The neutral hand orientation makes it compatible with standard SCMT-style toolholders used in right-hand turning operations. The CoroTurn 107 series targets general-purpose turning where consistent chip control and tool life on ferrous materials are priorities. Four usable cutting edges per insert reduce per-edge tooling cost in high-volume turning programs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiCN, Al2O3, TiN for wear and crater resistance on steel and cast iron\u003c\/li\u003e\n\u003cli\u003eSquare insert shape (SCMT) with 7-degree relief angle for positive clearance and reduced cutting forces\u003c\/li\u003e\n\u003cli\u003e3\/8 inch (9.53 mm) inscribed circle with 0.79 mm (0.0313 inch) corner radius\u003c\/li\u003e\n\u003cli\u003ePM chip breaker geometry for controlled chip formation across varied cutting parameters\u003c\/li\u003e\n\u003cli\u003e4 cutting edges per insert for extended total tool life per unit\u003c\/li\u003e\n\u003cli\u003eCompatible with both clamp and screw insert holding methods\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in SCMT-compatible toolholders within the CoroTurn 107 series. Primary workpiece material is steel (ISO P); secondary workpiece material is cast iron (ISO K). Verify toolholder seat size and insert holding method before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC tooling technician following the machine tool manufacturer's toolholder torque and clamping procedures. Power down and lock out the spindle before indexing or replacing inserts. Inspect the toolholder seat and clamping screw for wear or debris before seating a new insert. Never force an insert into a damaged or contaminated seat, as this can cause premature edge failure or insert breakage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: SCMT 09 T3 08-PM 4415\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: SCMT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Square\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: 4415\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN, Al2O3, TiN (CVD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: PM\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: 3\/8 inch (0.375 inch \/ 9.53 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.79 mm (0.0313 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3.97 mm (0.1563 inch)\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: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 4.40 mm (0.1732 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp, Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (ISO P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiper Edge\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\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: 7859127\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51748753408306,"sku":"7859127","price":222.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b2cfa1550100549643681de2443677eb_9289fcd4-c023-41b7-aa49-074237bcef6d.jpg?v=1788897816","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7859127-turning-insert-scmt-coroturn-107","provider":"Voomi Supply","version":"1.0","type":"link"}