{"product_id":"accupro-12178725-corner-radius-end-mill-3-4-in-7-flute","title":"Accupro 12178725 Corner Radius End Mill 3\/4 in 7 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12178725 is a 7-flute solid carbide corner radius end mill designed for high-performance milling in ferrous and hardened materials. It features an AlTiN coating that extends tool life under high heat and dry cutting conditions. The 0.03-inch corner radius reduces stress concentration at the cutting edge, making it well-suited for semi-finishing and finishing passes where edge sharpness and profile accuracy are critical. Variable index flute spacing reduces harmonic chatter during aggressive cuts. With a 3\/4-inch diameter and 2.25-inch length of cut, it handles deep-cavity and shoulder milling across a range of CNC machining operations.\u003c\/p\u003e\u003cp\u003eThis end mill is used in vertical and horizontal CNC machining centers across job shops, production floors, and tool-and-die operations. The single-end, centercutting design allows plunge entry and flexible toolpath strategies including slot milling, peripheral cutting, and ramping. A 37-degree helix angle promotes efficient chip evacuation and smooth surface finishes. The micrograin carbide substrate supports use in steels, stainless, cast iron, and high-temperature alloys. It is appropriate for applications where corner geometry must be held to tight tolerances.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7-flute geometry increases feed rates and improves surface finish over lower-flute-count tools\u003c\/li\u003e\n\u003cli\u003eAlTiN coating provides high heat resistance for dry and near-dry cutting in ferrous materials\u003c\/li\u003e\n\u003cli\u003e0.03-inch corner radius with a tolerance of plus or minus 0.0015 inches for precise profile control\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing reduces vibration and chatter at high spindle speeds\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables direct plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate for rigidity and edge retention in hard materials\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for CNC machining centers using 3\/4-inch collets, end mill holders, or shrink-fit toolholders with a 3\/4-inch bore.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Use a torque-rated tool holder appropriate for 3\/4-inch shank diameters and verify runout with a dial indicator after installation. Do not exceed the tool manufacturer-recommended depth of cut or axial engagement for the material being machined.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.75 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: 2.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.03 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: plus or minus 0.0015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.0025 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\u003eHelix Angle\u003c\/strong\u003e: 37 degrees\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: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\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: 1.153 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: 12178725\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51747587293490,"sku":"12178725","price":331.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bcaf4fe57e2833f33142a24736871d59.jpg?v=1788882988","url":"https:\/\/voomisupply.com\/products\/accupro-12178725-corner-radius-end-mill-3-4-in-7-flute","provider":"Voomi Supply","version":"1.0","type":"link"}