{"product_id":"sandvik-coromant-7860919-dnmg432-lc-4425-turning-insert","title":"Sandvik Coromant 7860919 DNMG432-LC 4425 Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 7860919 is a DNMG432-LC 4425 series turning insert designed for precision metal turning operations on steel workpieces. Part of the T-Max P series, this solid carbide insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN that delivers wear resistance and thermal protection during continuous and interrupted cutting. The diamond-shaped insert geometry carries a 55-degree included angle with a neutral hand orientation. The 0.79 mm corner radius and LC chip breaker geometry work together to control chip flow and reduce cutting forces in medium to finishing steel turning applications. This insert is installed and indexed by machinists and CNC lathe operators in production and job-shop environments.\u003c\/p\u003e\u003cp\u003eThe 7860919 is suited for external and internal turning of steel components on CNC lathes and turning centers. The LC chip breaker designation targets light to medium feeds on steel, making it a practical choice for finishing passes and light roughing where chip control and surface finish consistency matter. The T-Max P series is engineered for steel turning across a range of depths of cut and feed rates consistent with the P-grade ISO workpiece classification.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiCN, Al2O3, and TiN for thermal and wear resistance on steel\u003c\/li\u003e\n\u003cli\u003eLC chip breaker geometry optimized for light to medium feed steel turning\u003c\/li\u003e\n\u003cli\u003e55-degree diamond insert shape (DNMG style) with neutral hand — fits standard DNMG toolholders\u003c\/li\u003e\n\u003cli\u003e0.79 mm (0.0313 inch) corner radius for finishing and medium turning applications\u003c\/li\u003e\n\u003cli\u003e4 usable cutting edges per insert for extended tooling economy\u003c\/li\u003e\n\u003cli\u003eClamp and screw compatible insert holding — suits a wide range of standard toolholder systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard DNMG-style toolholders accepting a 12.70 mm inscribed circle insert with clamp or screw holding. ISO code DNMG 15 04 08-LC 4425. Primary workpiece material classification is steel (ISO P). Verify toolholder pocket tolerance and clamping method before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTurning insert indexing and replacement should be performed by a qualified machinist with the machine in a fully stopped and locked-out state per applicable machine safety procedures. Ensure the toolholder pocket and seating surface are clean and free of chips before seating the insert. Torque clamping screws according to the toolholder manufacturer specifications — do not overtighten. Confirm insert orientation and edge engagement before resuming cutting operations.\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\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: Diamond (55-degree included angle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: LC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 12.70 mm (0.2030 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.79 mm (0.0313 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 4.76 mm (0.1875 inches)\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\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: N\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\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: DNMG 15 04 08-LC 4425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242105\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 0.3 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: 7860919\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51732906475826,"sku":"7860919","price":348.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f4fd13b3a3ff6df8b72774324170cbb8_743f14bf-d6c2-4276-a497-3fd9f408920f.jpg?v=1788748604","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7860919-dnmg432-lc-4425-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}