{"product_id":"sandvik-coromant-7860730-turning-insert-cnmg644-pr-4425","title":"Sandvik Coromant 7860730 Turning Insert CNMG644-PR 4425","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 7860730 is a CNMG-style indexable turning insert in the T-Max P series, designed for external turning operations on CNC lathes and turning centers. Manufactured from solid carbide with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, this insert delivers thermal resistance and wear protection during continuous and interrupted steel cutting. The 80-degree diamond insert shape provides a strong cutting edge geometry suitable for profiling and general turning. With a 0.75-inch inscribed circle and a 0.0625-inch corner radius, this insert is suited to medium-to-heavy depths of cut. Licensed machinists and CNC operators install this insert in compatible toolholders as a direct indexed replacement when an edge is worn.\u003c\/p\u003e\u003cp\u003eThe 7860730 is primarily rated for steel workpieces (ISO material group P) and is also applicable to cast iron (ISO material group K). The T-Max P series addresses general turning demands in production machining environments, including both roughing and semi-finishing passes. The PR chip breaker geometry controls chip flow across a broad feed and depth-of-cut range, making it a practical choice for high-volume turning cells in job shops, automotive component manufacturing, and contract machining facilities.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiCN, Al2O3, TiN for heat and wear resistance in steel and cast iron cutting\u003c\/li\u003e\n\u003cli\u003e80-degree diamond insert shape (Shape Code C) with 4 usable cutting edges for extended tool life per insert\u003c\/li\u003e\n\u003cli\u003e0.75-inch inscribed circle and 0.25-inch insert thickness for rigid, stable seating in CNMG toolholders\u003c\/li\u003e\n\u003cli\u003e0.0625-inch (1.59 mm) corner radius balances surface finish quality with edge strength\u003c\/li\u003e\n\u003cli\u003ePR chip breaker designed for controlled chip formation across a wide range of feed rates\u003c\/li\u003e\n\u003cli\u003eCompatible with clamp and screw insert holding methods; Tolerance Code M, Clearance Code N\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNMG-style toolholders that accept a 0.75-inch inscribed circle insert. ISO code CNMG 19 06 16-PR 4425. Compatible toolholders must support clamp or screw insert clamping methods. Primary workpiece material compatibility is steel (ISO Code P); secondary compatibility is cast iron (ISO Code K).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert indexing and replacement should be performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machine spindle before removing or seating any insert. Use the correct torque wrench and manufacturer-specified seating procedure for the toolholder clamp or screw to ensure proper insert seating and prevent micro-movement during cutting. Inspect the insert pocket and seating surface for chips or wear before installing a new edge.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: CNMG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: T-Max P\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: TiCN, Al2O3, TiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: 80-Degree Diamond (Shape Code C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.75 inches (19.05 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0625 inches (1.59 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.312 inches (7.93 mm)\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\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: PR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (ISO Code P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO Code K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CNMG 19 06 16-PR 4425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp, Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 5.08 inches L x 2.13 inches W x 0.53 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: 7860730\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51749238440242,"sku":"7860730","price":598.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/adbec394d4f86a78adae52f8cabc07dc_9edc6c0c-2e16-4a87-a4ec-e04ba8dfa110.jpg?v=1788903476","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7860730-turning-insert-cnmg644-pr-4425","provider":"Voomi Supply","version":"1.0","type":"link"}