{"product_id":"helical-solutions-83077-corner-radius-end-mill-1-4-in-5-fl","title":"Helical Solutions 83077 Corner Radius End Mill 1\/4 in 5 Fl","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELICAL SOLUTIONS 83077 is a 5-flute solid carbide corner radius end mill designed for high-performance material removal in ferrous and difficult-to-machine materials. It carries a 0.2500 inch mill diameter, a 0.7500 inch length of cut, and a 0.0300 inch corner radius that reduces stress concentration at the cutting edge. The APLUS PVD coating improves wear resistance and heat dissipation, extending tool life in demanding cuts. Variable index flute spacing reduces harmonic chatter during aggressive passes, making this tool well suited for roughing operations where stability and surface finish both matter. Overall length is 2.5 inches with a 0.2500 inch straight-cylindrical shank.\u003c\/p\u003e\u003cp\u003eThis end mill is built for machining steel, cast iron, stainless steel, superalloys, and titanium. It fits into the HEV-C-5 series, which targets high-efficiency roughing strategies in job shop and production environments. The centercutting geometry allows plunge entry, giving machinists flexibility in toolpath programming without requiring a pre-drilled pilot hole. The tool is rated for use in high-precision toolholders that minimize runout, which is especially important given the tight TIR maximum of 0.0005 inch. Primary material applications include low-alloy steel, medium alloy steel, tool steel, and cast iron.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5-flute variable-index geometry reduces chatter and supports higher feed rates during roughing\u003c\/li\u003e\n\u003cli\u003e0.0300 inch corner radius extends edge life and reduces corner chipping on pockets and slots\u003c\/li\u003e\n\u003cli\u003eAPLUS PVD coating enhances hardness and oxidation resistance for steel and cast iron applications\u003c\/li\u003e\n\u003cli\u003eCentercutting design permits direct plunge entry without a pilot hole\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand spiral flute configuration compatible with standard CNC milling setups\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction maintains rigidity and dimensional accuracy at elevated cutting speeds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eThe 83077 is part of the HELICAL SOLUTIONS HEV-C-5 series and is rated for primary use in steel and cast iron (ISO material codes P and K) and secondary use in stainless steel, superalloys, and titanium (ISO codes M and S). Recommended for use with high-precision toolholders to maintain TIR within the 0.0005 inch maximum specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified CNC machinist or tooling technician. Seat the 0.2500 inch shank fully into a high-precision collet or toolholder and torque the retention mechanism per the toolholder manufacturer specification. Confirm runout at the tip does not exceed the 0.0005 inch TIR maximum before beginning a cut. Inspect the corner radius and cutting edges for chips or coating damage before each use, and replace the tool if edge integrity is compromised.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.2500 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: 0.7500 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\u003eOverall Length\u003c\/strong\u003e: 2.5000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: APLUS (PVD)\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\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Removal Type\u003c\/strong\u003e: Roughing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTIR Maximum\u003c\/strong\u003e: 0.0005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: -0.0020 to 0.0020 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: -0.0020 \/ 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: -0.0620 \/ 0.0620 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Superalloys, Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HEV-C-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.055 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: HELICAL SOLUTIONS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 83077\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51731896369458,"sku":"83077","price":80.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/849e1bc8f17c8d1b72cda339a8db205a_a9425352-ad5a-4584-be46-c0c68661cbed.jpg?v=1788736231","url":"https:\/\/voomisupply.com\/products\/helical-solutions-83077-corner-radius-end-mill-1-4-in-5-fl","provider":"Voomi Supply","version":"1.0","type":"link"}