{"product_id":"sandvik-coromant-5891383-cnmg431-sf-1125-turning-insert","title":"Sandvik Coromant 5891383 CNMG431-SF 1125 Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 5891383 is a CNMG431-SF 1125 series turning insert designed for demanding metal-cutting applications on CNC lathes and turning centers. This solid carbide insert features a TiAlN and AlCr2O3 PVD coating applied over a grade 1125 substrate, giving it strong resistance to heat and wear when cutting difficult materials. The diamond-shaped 80-degree insert geometry, neutral hand orientation, and SF chip breaker geometry work together to control chip flow and reduce cutting forces. It is installed and changed out by machinists and CNC turning specialists in job shops and production environments.\u003c\/p\u003e\u003cp\u003eThis insert is optimized for turning stainless steel as its primary workpiece material, with secondary suitability for superalloys and titanium. These are materials that demand sharp edges, stable coatings, and controlled chip evacuation to avoid built-up edge and premature wear. The T-Max P series insert is suited for medium to finishing passes where surface finish and tool life consistency are priorities. The SF chip breaker designation targets free-cutting geometries on these tough, work-hardening alloys.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGrade 1125 carbide substrate with PVD-applied TiAlN and AlCr2O3 dual-layer coating for heat and wear resistance\u003c\/li\u003e\n\u003cli\u003eSF chip breaker geometry optimized for stainless steel, superalloys, and titanium\u003c\/li\u003e\n\u003cli\u003e80-degree diamond insert shape (CNMG) with neutral hand for versatile turning operations\u003c\/li\u003e\n\u003cli\u003e4 cutting edges per insert for extended tooling economy\u003c\/li\u003e\n\u003cli\u003eClamp and pin holding method compatible with standard CNMG toolholders\u003c\/li\u003e\n\u003cli\u003eISO code CNMG 12 04 04-SF 1125 for cross-reference and toolholder selection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard CNMG-style turning toolholders that accept clamp and pin insert retention. Compatible with T-Max P series tooling systems. Verify toolholder pocket dimensions and clamping method before installation. ISO designation CNMG 12 04 04-SF 1125 can be used to confirm fitment with holder manufacturer specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert seating and clamping should be performed with the machine fully powered down and the spindle locked. Ensure the toolholder pocket and seating surface are clean and free of chips or debris before placing the insert. Use the appropriate torque wrench and clamping hardware specified by the toolholder manufacturer — do not overtighten the clamp screw. Inspect the insert seat and clamp for wear each time an edge is indexed.\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\u003eISO Code\u003c\/strong\u003e: CNMG 12 04 04-SF 1125\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: 1125\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: TiAlN \/ AlCr2O3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (80-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: SF\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\u003eInsert Length\u003c\/strong\u003e: 0.3346 inches (8.50 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\u003eCorner Radius\u003c\/strong\u003e: 0.0156 inches (0.40 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\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\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: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Superalloy, Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.23 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: 5891383\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51749155242290,"sku":"5891383","price":311.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fd11f4548006b4e6dcb5e6480fe6a69b_5de6535e-06df-4c0c-b6a3-28120e3cf55a.jpg?v=1788902729","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5891383-cnmg431-sf-1125-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}