{"product_id":"accupro-312757-corner-radius-end-mill-3-4-in-7-flute-carbide","title":"Accupro 312757 Corner Radius End Mill 3\/4 in 7 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 312757 is a solid carbide corner radius end mill designed for high-performance milling applications where edge strength and surface finish matter. Built to Series HS specifications, it features a 3\/4-inch diameter, a 2-1\/4-inch length of cut, and a 0.060-inch corner radius that protects the cutting edge and reduces stress concentrations at the base of milled pockets and slots. The 7-flute geometry, combined with a 38-degree helix angle and an AlCrTiN coating, supports aggressive material removal in hardened steels, stainless alloys, and other demanding workpiece materials. Machinists and tool and die professionals install this end mill on CNC machining centers requiring tight tolerances and extended tool life.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for finishing and semi-finishing passes in ferrous and hardened materials on vertical and horizontal CNC machining centers. The non-centercutting design means it is not intended for plunge cutting; it should be entered via ramping or helical interpolation. The straight-cylindrical shank accepts standard ER or end mill holders sized for 3\/4-inch bore. The single-end configuration and 5-inch overall length provide adequate reach for medium-depth pockets and profiling operations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid micrograin carbide construction for rigidity and wear resistance in demanding alloys\u003c\/li\u003e\n  \u003cli\u003eAlCrTiN coating improves heat resistance and extends tool life in high-speed dry or near-dry cutting\u003c\/li\u003e\n  \u003cli\u003e7-flute, right-hand spiral geometry increases feed capacity and surface finish quality\u003c\/li\u003e\n  \u003cli\u003e0.060-inch corner radius reduces edge chipping and stress at pocket floors\u003c\/li\u003e\n  \u003cli\u003e38-degree helix angle promotes smooth chip evacuation and reduces cutting forces\u003c\/li\u003e\n  \u003cli\u003eNon-centercutting design requires ramp or helical entry — not suitable for direct plunge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a Series HS replacement or direct-use solid carbide corner radius end mill for CNC machining centers accepting a 3\/4-inch straight-cylindrical shank in standard ER collet chucks or end mill holders.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the holder and torque the retention mechanism to the holder manufacturer's specification. Confirm runout with a dial indicator before initiating a cut, as excessive runout will accelerate edge wear on a 7-flute tool.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2-1\/4 inches (2.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0600 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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.001000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.002 inches\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\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: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Helix\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\u003eSeries\u003c\/strong\u003e: HS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: 312757\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730406834482,"sku":"312757","price":474.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d65f8b895eb0617509e51640a2ceb153.jpg?v=1788716905","url":"https:\/\/voomisupply.com\/products\/accupro-312757-corner-radius-end-mill-3-4-in-7-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}