{"product_id":"sandvik-coromant-7859265-turning-insert-dnmg542-pr","title":"Sandvik Coromant 7859265 Turning Insert DNMG542-PR","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 7859265 is a DNMG-style indexable turning insert in the T-Max P series, designed for external and internal turning operations on CNC lathes and turning centers. Manufactured from solid carbide with a CVD-applied TiCN, Al2O3, and TiN multilayer coating, this insert is engineered for cutting steel and cast iron at production feed rates. The 55-degree diamond shape (Insert Shape Code D) provides a strong, versatile nose geometry. With a 0.0313 inch (0.79 mm) corner radius and a PR chip breaker, it is suited for general-purpose roughing to medium finishing passes. Installation and indexing are handled by licensed machinists and CNC operators in production and job-shop environments.\u003c\/p\u003e\u003cp\u003eThis insert is primarily applied in turning steel workpieces, with secondary capability on cast iron. The T-Max P series targets high-productivity metal removal in both light and heavy industry. The neutral hand orientation allows use in standard right-hand toolholders without special orientation. The PR chip breaker geometry manages chip formation effectively across a range of depths of cut and feed rates, reducing downtime from chip accumulation. Typical applications include shaft turning, facing, and profiling on medium to large workpieces in automotive, aerospace, and general machining environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and thermal protection on steel and cast iron\u003c\/li\u003e\n\u003cli\u003e55-degree diamond insert shape with 4 cutting edges for maximum indexable use per insert\u003c\/li\u003e\n\u003cli\u003e0.79 mm (0.0313 inch) corner radius with PR chip breaker for controlled chip evacuation\u003c\/li\u003e\n\u003cli\u003eManufacturer Grade 4415 carbide substrate optimized for steel-primary applications\u003c\/li\u003e\n\u003cli\u003eClamp and screw holding compatibility for secure seating in standard DNMG toolholders\u003c\/li\u003e\n\u003cli\u003eISO Code DNMG 19 06 08-PR 4415 for cross-reference and toolholder selection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard DNMG-style toolholders accepting a 5\/8 inch (0.6250 inch) inscribed circle insert with a 0.2500 inch hole diameter. Compatible toolholders must accommodate the clamp and screw holding method specified for this insert style. Primary workpiece material compatibility is steel (ISO P); secondary compatibility is cast iron (ISO K).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eIndexable inserts of this type are installed and indexed by qualified machinists or CNC operators following machine tool builder guidelines. Power down and lock out the spindle before indexing or replacing inserts. Use the correct torque wrench per toolholder manufacturer specifications when tightening clamping screws — do not overtighten by hand estimation. Inspect the toolholder pocket and seating surfaces for wear or debris before seating a fresh insert.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: DNMG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: DNMG 19 06 08-PR 4415\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (55 degrees)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape Code\u003c\/strong\u003e: D\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: 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\u003eChip Breaker\u003c\/strong\u003e: PR\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: 5\/8 inch (0.6250 inch \/ 15.88 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: 1\/4 inch (0.2500 inch \/ 6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2500 inch (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and 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\u003eSeries\u003c\/strong\u003e: T-Max P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 5.83 inches L x 2.36 inches W x 0.71 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: 7859265\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51733508587826,"sku":"7859265","price":526.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bd635f9b63938a46aa4eb937521c017a.jpg?v=1788755995","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7859265-turning-insert-dnmg542-pr","provider":"Voomi Supply","version":"1.0","type":"link"}