{"product_id":"accupro-311931-corner-radius-end-mill-1-in-5-flute-carbide","title":"Accupro 311931 Corner Radius End Mill 1 in 5 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 311931 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. It carries a 1 inch diameter with a 4.25 inch length of cut and a 7 inch overall length. The AlCrTiN coating provides heat and wear resistance suited for hardened steels, stainless alloys, and other difficult-to-machine materials. With 5 flutes, a 38-degree helix angle, and a variable index, this tool is built for efficient chip evacuation and reduced chatter during deep-reach profiling and finishing cuts. Centercutting geometry allows direct plunge entry without a pre-drilled pilot hole.\u003c\/p\u003e\u003cp\u003eThis end mill is used in CNC machining centers for profiling, slotting, and contouring operations where a controlled corner radius is required to reduce stress concentrations at part features. The 0.030 inch corner radius makes it suitable for semi-finish and finish passes on molds, dies, aerospace components, and precision mechanical parts. The single-end, right-hand cutting and right-hand spiral configuration is the standard setup for conventional vertical and horizontal milling applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlCrTiN coating for extended tool life in high-heat cutting conditions\u003c\/li\u003e\n\u003cli\u003e5-flute, 38-degree helix design promotes smooth chip flow and reduced vibration\u003c\/li\u003e\n\u003cli\u003eVariable index spacing minimizes harmonic chatter during aggressive cuts\u003c\/li\u003e\n\u003cli\u003e0.030 inch corner radius reduces edge chipping and part stress concentrations\u003c\/li\u003e\n\u003cli\u003eCentercutting capable — supports direct plunge milling without a pilot hole\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide construction provides rigidity and edge retention\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use end mill for CNC machining centers accepting a 1 inch shank diameter toolholder in the HS series configuration.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Secure the 1 inch shank in a properly sized collet or end mill holder torqued to the toolholder manufacturer specification. Verify runout with a dial indicator before initiating a cut. Follow shop-specific speeds and feeds data for carbide end mills when setting spindle RPM and feed rate.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1 inch\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: 4.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.030 inch\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\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\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\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2 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: 311931\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51753081274674,"sku":"311931","price":844.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a8254d0ae7b10182ca163db3aac307e6_8caa857d-acec-4e79-86c1-11ee9b44063a.jpg?v=1788932631","url":"https:\/\/voomisupply.com\/products\/accupro-311931-corner-radius-end-mill-1-in-5-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}