{"product_id":"accupro-12183017-corner-radius-end-mill-1-4-in-4-flute-altin","title":"Accupro 12183017 Corner Radius End Mill 1\/4 in 4 Flute Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12183017 is a solid carbide corner radius end mill designed for precision milling of ferrous and non-ferrous metals. It features a 1\/4 inch diameter, a 1-1\/8 inch length of cut, and a 0.03 inch corner radius that reduces stress concentration at the cutting edge and extends tool life in aggressive side-milling and slotting operations. The AlTiN coating provides high-temperature oxidation resistance, making this end mill well-suited for dry or near-dry cutting conditions. With a 40-degree helix angle and four right-hand spiral flutes, it delivers efficient chip evacuation and smooth surface finishes. Machinists and CNC operators in job shops, tool rooms, and production environments install this tool for finishing and semi-finishing passes where edge integrity is critical.\u003c\/p\u003e\n\u003cp\u003eThis end mill is intended for use in vertical machining centers, CNC mills, and manual knee mills where a 1\/4 inch shank is compatible with the spindle toolholder. The long-length configuration, with a 3 inch overall length, provides additional reach for deeper cavities and pockets. The centercutting design allows direct plunge entry, expanding its utility across profiling, contouring, and pocket milling operations. Micrograin carbide substrate supports the tight tolerances required for precision die, mold, and fixture work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.03 inch corner radius reduces edge chipping and workpiece stress risers\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating supports high-temperature dry and semi-dry cutting\u003c\/li\u003e\n  \u003cli\u003e40-degree helix angle promotes efficient chip evacuation in deep cuts\u003c\/li\u003e\n  \u003cli\u003eCentercutting geometry enables direct plunge milling without a pilot hole\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide substrate for dimensional stability and edge retention\u003c\/li\u003e\n  \u003cli\u003eSingle-end, right-hand cutting with right-hand flute direction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in 1\/4 inch toolholders including collet chucks, end mill holders, and shrink-fit holders compatible with standard 1\/4 inch shank diameters. Shank diameter tolerance is -0.0001 to -0.0004 inches for consistent runout in precision holders.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator following the machine tool manufacturer's toolholder torque and retention specifications. Ensure the spindle is fully stopped and locked out before loading or changing the tool. Seat the shank to the recommended engagement depth in the holder to avoid deflection during cutting. Verify runout with a dial indicator before production cuts when tolerances are critical.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch\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\u003eCorner Radius\u003c\/strong\u003e: 0.0300 inches\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\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\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\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\u003eLength Type\u003c\/strong\u003e: Long\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 to -0.002500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 to -0.0004 inches\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\u003eWeight\u003c\/strong\u003e: 0.14 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: 12183017\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51749408276786,"sku":"12183017","price":64.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1deaa95a07a461e992d291ecf8908f64.jpg?v=1788905706","url":"https:\/\/voomisupply.com\/products\/accupro-12183017-corner-radius-end-mill-1-4-in-4-flute-altin","provider":"Voomi Supply","version":"1.0","type":"link"}