{"product_id":"accupro-12180634-corner-radius-end-mill-1-2-in-4-flute-altin","title":"Accupro 12180634 Corner Radius End Mill 1\/2 in 4 Flute Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12180634 is a solid carbide corner radius end mill designed for precision milling in demanding metal-cutting applications. It features a 1\/2 inch mill diameter, a 1-1\/4 inch length of cut, and a 0.06 inch corner radius that reduces stress concentration at the cutting edge and extends tool life. The 4-flute, right-hand spiral configuration with a 40-degree helix angle promotes efficient chip evacuation and smooth surface finishes. An AlTiN coating provides thermal resistance and hardness at elevated temperatures, making this tool well-suited for dry or near-dry cutting of hardened steels, stainless, and high-temperature alloys. The 1\/2 inch shank fits standard ER and side-lock toolholders. Single-end, centercutting geometry allows plunge entry and full slot milling.\u003c\/p\u003e\n\u003cp\u003eThis end mill is used in CNC vertical and horizontal machining centers for finishing and semi-finishing operations on ferrous and non-ferrous metals. The corner radius geometry is preferred on die and mold work, aerospace components, and any application where a sharp 90-degree corner would cause premature chipping. The variable index design helps suppress chatter during aggressive side milling passes. The 3 inch overall length keeps overhang minimal, contributing to rigidity in high-feed-rate programs. Machinists and tool-and-die professionals working in job shops, production shops, and maintenance environments will find this tool appropriate for a wide range of contouring and profiling tasks.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.06 inch corner radius reduces edge chipping and extends tool life versus square-end geometry\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating provides high thermal resistance for dry and hard milling applications\u003c\/li\u003e\n  \u003cli\u003e4-flute, right-hand spiral with 40-degree helix angle for efficient chip evacuation and surface finish\u003c\/li\u003e\n  \u003cli\u003eCentercutting design permits plunge milling and slot entry without a pre-drilled hole\u003c\/li\u003e\n  \u003cli\u003eVariable index flute spacing reduces harmonic chatter during high-feed side milling\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide substrate for hardness and dimensional stability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit tooling option for CNC machining centers accepting 1\/2 inch shank end mills in standard ER collet chucks, hydraulic holders, and side-lock toolholders.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the machine in a locked-out, de-energized state per applicable safety procedures. Ensure the shank is fully seated to the recommended gauge line depth in the toolholder and that the holder is torqued per the toolholder manufacturer's specification. Inspect the corner radius and cutting edges for chips or coating damage before each use. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/2 inch (0.5000 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.002500 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0600 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: 0.00150 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0004 inch\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 End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\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\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Micrograin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 12180634\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730972999986,"sku":"12180634","price":110.47,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/888d5f50c275d5381e9466736c954f2b.jpg?v=1788725492","url":"https:\/\/voomisupply.com\/products\/accupro-12180634-corner-radius-end-mill-1-2-in-4-flute-altin","provider":"Voomi Supply","version":"1.0","type":"link"}