{"product_id":"sandvik-coromant-6042790-turning-insert-cnmg432-krr","title":"Sandvik Coromant 6042790 Turning Insert CNMG432-KRR","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 6042790 is a solid carbide turning insert designed for precision metal-cutting operations on CNC lathes and turning centers. It carries the ISO designation CNMG 12 04 08-KRR 3210 and belongs to the T-Max P series, engineered for reliable performance in external and internal turning applications. The insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal stability during continuous or interrupted cuts. A neutral hand orientation and 80-degree diamond geometry deliver strong cutting edges suited to roughing and medium turning passes on cast iron workpieces.\u003c\/p\u003e\u003cp\u003eThis insert is intended for use in turning operations where the primary workpiece material is cast iron, designated material code K. It fits standard CNMG-style toolholders using clamp and pin holding methods, making it a direct fit in common external turning setups on both CNC and manual lathes. Machinists and toolroom technicians working in production environments will find the KRR chip breaker geometry well matched to cast iron chip control requirements. The T-Max P series is a widely used platform in industrial turning, supporting consistent tool changes and predictable tool life across high-volume operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiCN, Al2O3, and TiN for extended wear resistance in cast iron turning\u003c\/li\u003e\n\u003cli\u003e80-degree diamond insert shape (code C) with 4 cutting edges for economical edge utilization\u003c\/li\u003e\n\u003cli\u003eKRR chip breaker geometry optimized for cast iron material group K applications\u003c\/li\u003e\n\u003cli\u003eNeutral hand orientation for versatile toolholder compatibility\u003c\/li\u003e\n\u003cli\u003eClamp and pin holding method for secure, repeatable seating in CNMG-style holders\u003c\/li\u003e\n\u003cli\u003eT-Max P series platform with ISO code CNMG 12 04 08-KRR 3210 for easy cross-reference\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement turning insert for CNMG-style toolholders using clamp and pin clamping, compatible with the T-Max P series insert platform. Verify toolholder seat geometry and insert size code 432 before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert installation should be performed by a qualified machinist or toolroom technician with the machine powered down and the spindle locked. Seat the insert fully against the pocket and tighten the clamp or pin fastener to the toolholder specification. Inspect the insert seat and clamp for wear or debris before installation to ensure proper seating and edge repeatability. Do not force the insert into the pocket, as improper seating can cause premature edge failure or toolholder damage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CNMG 12 04 08-KRR 3210\u003c\/li\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: 3210\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 Diamond (Code C)\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: KRR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5000 inches (12.70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0313 inches (0.79 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.4762 inches (12.10 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches (4.76 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2030 inches (5.16 mm)\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 Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron (Code 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: 0.24 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: 6042790\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51727533113650,"sku":"6042790","price":274.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/38014dd0a88de4ac5df765be33b95304.jpg?v=1788678956","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-6042790-turning-insert-cnmg432-krr","provider":"Voomi Supply","version":"1.0","type":"link"}