{"product_id":"accupro-12181901-corner-radius-end-mill-1-8-in-3-flute-altin","title":"Accupro 12181901 Corner Radius End Mill 1\/8 in 3 Flute Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12181901 is a solid carbide corner radius end mill designed for precision milling in demanding machining applications. It features a 1\/8 inch cutting diameter, a 0.015 inch corner radius, and three right-hand spiral flutes for efficient chip evacuation and smooth surface finishes. The AlTiN (aluminum titanium nitride) coating provides high heat resistance, making it well-suited for dry or semi-dry cutting in hard and abrasive materials. With a 1\/2 inch length of cut and 1-1\/2 inch overall length, this single-end, centercutting tool is appropriate for slot milling, profiling, and finishing passes in tight-tolerance work. Machinists and tool-and-die professionals are the primary users.\u003c\/p\u003e\u003cp\u003eThis end mill is used in CNC machining centers and manual mills for operations requiring a controlled corner break or radius in slots, pockets, and contoured profiles. The micrograin carbide substrate supports use in hardened steels, stainless steel, cast iron, and high-temperature alloys. The 1\/8 inch shank diameter fits standard ER collet chucks and end mill holders sized for small-diameter tooling. It is a single-end tool, so once the cutting end is worn, the tool is replaced rather than flipped.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.015 inch corner radius reduces stress concentrations at part features and extends tool life in profiling cuts\u003c\/li\u003e\n\u003cli\u003eAlTiN coating delivers oxidation resistance and hardness retention at elevated cutting temperatures\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate provides rigidity and edge sharpness in hard-material applications\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows plunge entry directly into the workpiece\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute spiral for use on standard CNC and manual milling machines\u003c\/li\u003e\n\u003cli\u003eThree-flute design balances chip evacuation with cutting edge strength at small diameters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement for 1\/8 inch shank corner radius end mills used in standard ER collet chucks, end mill holders, and shrink-fit tooling systems that accept 1\/8 inch diameter shanks.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is in a safe state before mounting or removing tooling. The shank should be cleaned and seated to the recommended engagement depth in the collet or holder before torquing the retention nut to the tool holder manufacturer specification. Verify runout with a dial indicator after clamping to confirm acceptable concentricity before beginning a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 1\/8 inch (0.1250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: plus or minus 0.00150 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 to -0.002500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 to -0.0004 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 12181901\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51753398174002,"sku":"12181901","price":36.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/48e00a7d98468a8b0666c5d4a63855aa.jpg?v=1788936270","url":"https:\/\/voomisupply.com\/products\/accupro-12181901-corner-radius-end-mill-1-8-in-3-flute-altin","provider":"Voomi Supply","version":"1.0","type":"link"}