{"product_id":"accupro-311787-corner-radius-end-mill-3-4-in-5-flute","title":"Accupro 311787 Corner Radius End Mill 3\/4 in 5 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 311787 is a single-end corner radius end mill engineered for high-performance milling in demanding metalworking applications. Built from micrograin solid carbide and coated with AlCrTiN, it delivers heat resistance and wear life in hardened steels, stainless, and high-temp alloys. The 3\/4 inch diameter, 5-flute design runs a 38-degree variable-index helix to reduce chatter and improve chip evacuation. With a 0.060 inch corner radius, the tool blends strength at the cutting edge with the ability to produce smooth floor-to-wall transitions. Machinists and CNC programmers in job shops, tool rooms, and production environments rely on this series for finishing and semi-finishing passes where edge life and surface finish both matter.\u003c\/p\u003e\u003cp\u003eThis end mill fits standard 3\/4 inch toolholders including collet chucks, end mill holders, and shrink-fit systems. The 1.625 inch length of cut accommodates moderate-depth slots, pockets, and contour passes without excessive overhang. The 4 inch overall length suits vertical machining centers and horizontal mills running steel, titanium, and other hard materials where a premium carbide substrate and AlCrTiN coating are required. Centercutting geometry allows direct plunge entry where the application permits.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide substrate for rigidity and edge retention in hard materials\u003c\/li\u003e\n\u003cli\u003eAlCrTiN coating provides thermal protection and oxidation resistance at elevated cutting speeds\u003c\/li\u003e\n\u003cli\u003e5-flute variable-index design reduces harmonic vibration and improves surface finish\u003c\/li\u003e\n\u003cli\u003e0.060 inch corner radius protects the cutting edge and produces clean radius transitions at pocket floors\u003c\/li\u003e\n\u003cli\u003eCentercutting capable for direct plunge milling where required\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand spiral flute geometry for standard CNC mill spindle use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 3\/4 inch diameter toolholding systems on CNC vertical and horizontal machining centers running right-hand spindle rotation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the spindle fully stopped and the machine in an e-stop or locked-out state per shop lockout\/tagout procedures. Seat the shank fully into the toolholder and torque the retention mechanism to the toolholder manufacturer's specification. Inspect the corner radius and flute edges for chips or coating damage before mounting. Follow the tooling manufacturer's recommended speeds and feeds for the specific workpiece material and do not exceed the rated length of cut during slotting operations.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/4 inch (0.7500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.625 inches (41.28 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches (101.6 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/4 inch (19.05 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.060 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 38 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\u003c\/strong\u003e: AlCrTiN\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\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.001000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: 311787\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":52055237951794,"sku":"311787","price":383.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d6858e6a9c69732dde91e44c9ccffd5b.jpg?v=1790037414","url":"https:\/\/voomisupply.com\/products\/accupro-311787-corner-radius-end-mill-3-4-in-5-flute","provider":"Voomi Supply","version":"1.0","type":"link"}