{"product_id":"accupro-12183209-corner-radius-end-mill-3-16-in-4-flute","title":"Accupro 12183209 Corner Radius End Mill 3\/16 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12183209 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining applications. It features a 3\/16 inch diameter with a 0.0450 inch corner radius, providing controlled edge geometry that reduces stress concentration and extends tool life in demanding cuts. The 4-flute spiral design with a 40-degree right-hand helix promotes efficient chip evacuation and smooth surface finishes. With a 1-1\/8 inch length of cut and a 3 inch overall length, this is an extra-long configuration suited to deeper reach applications. It is installed by machinists and CNC operators on vertical mills, machining centers, and manual knee mills.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for profiling, slotting, and contouring operations on ferrous and non-ferrous materials where a radiused corner is required to prevent sharp-edge chipping or to match a blended fillet geometry. The bright uncoated finish makes it appropriate for use in aluminum and other softer alloys where coatings can cause material adhesion. The centercutting capability allows direct plunge entry into the workpiece without a pre-drilled pilot hole, supporting both ramping and full-depth plunge moves on CNC and manual equipment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide micrograin construction for rigidity and wear resistance in precision cuts\u003c\/li\u003e\n  \u003cli\u003e0.0450 inch corner radius reduces edge chipping and blends fillet geometry\u003c\/li\u003e\n  \u003cli\u003e4-flute, 40-degree helix for efficient chip evacuation and improved surface finish\u003c\/li\u003e\n  \u003cli\u003eExtra-long configuration with 1-1\/8 inch LOC and 3 inch OAL for deeper reach operations\u003c\/li\u003e\n  \u003cli\u003eCentercutting design permits direct plunge entry without a pilot hole\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish suitable for aluminum and non-ferrous materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard-use corner radius end mill for CNC machining centers and manual mills accepting a 3\/16 inch straight shank tool holder.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists using a compatible collet, end mill holder, or set-screw holder sized for a 3\/16 inch shank. Ensure the spindle is fully powered down and locked before changing tooling. Confirm runout and tool projection length against the programmed depth of cut before beginning operation. Follow machine manufacturer guidelines and applicable shop safety standards when securing and torquing tool holders.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/16 inch (0.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0450 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/8 inches (1.1250 inches)\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: 3\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\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\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\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\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\u003eLength Type\u003c\/strong\u003e: Extra Long\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: 0.00150 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.002500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0004 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\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: 12183209\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51728348709170,"sku":"12183209","price":50.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f3b2a25a2f617bcf619293aaf9639e98.jpg?v=1788690579","url":"https:\/\/voomisupply.com\/products\/accupro-12183209-corner-radius-end-mill-3-16-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}