{"product_id":"helical-solutions-81308-corner-radius-end-mill-3-4in-3-flute-carbide","title":"Helical Solutions 81308 Corner Radius End Mill 3\/4in 3 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELICAL SOLUTIONS 81308 is a solid carbide corner radius end mill designed for high-efficiency material removal in aluminum and non-ferrous metal applications. It features a 3\/4 inch cutting diameter, 2 inch length of cut, and a 0.0300 inch corner radius that reduces edge chipping and extends tool life on contoured surfaces. The 3-flute, right-hand spiral geometry paired with a 45-degree helix angle promotes aggressive chip evacuation. A Zplus PVD coating applied via physical vapor deposition enhances lubricity and heat resistance. This tool is single-end, center-cutting, and sized on a 3\/4 inch straight-cylindrical shank, making it compatible with high-precision toolholders used in CNC milling operations.\u003c\/p\u003e\u003cp\u003eThis end mill is built for roughing operations in aluminum and non-ferrous metals as its primary application, and is also rated for use in steel, stainless steel, cast iron, high temperature alloys, and hard materials as secondary workpiece materials. The Series H45AL-C-3 designation identifies it as part of a family optimized for aluminum at high spindle speeds and feed rates. Typical use scenarios include profiling, slotting, and peripheral milling on CNC machining centers in job shop, aerospace, and general metalworking environments. The chipbreaker geometry reduces cutting forces and helps manage chip load during extended roughing passes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/4 inch cutting diameter with h6 tolerance on both mill and shank diameter\u003c\/li\u003e\n\u003cli\u003e0.0300 inch corner radius with tolerance of -0.0020 to +0.0020 inches for consistent edge geometry\u003c\/li\u003e\n\u003cli\u003e3-flute right-hand spiral with 45-degree high helix angle for efficient chip evacuation in aluminum\u003c\/li\u003e\n\u003cli\u003eZplus PVD coating optimized for aluminum and non-ferrous cutting\u003c\/li\u003e\n\u003cli\u003eCenter-cutting and chipbreaker-equipped for versatile roughing and entry cuts\u003c\/li\u003e\n\u003cli\u003eTIR maximum of 0.0003 inches for tight runout control in precision toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with high-precision toolholders in CNC milling applications. Primary workpiece material is aluminum and non-ferrous metal; secondary workpiece materials include steel, stainless steel, cast iron, high temperature alloys, and hard materials. Series H45AL-C-3.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified CNC machinist or toolroom professional. Secure the shank fully into a high-precision toolholder to maintain runout within the specified TIR maximum. Confirm spindle is fully stopped and machine is in a safe state before changing tooling. Do not exceed the rated depth of cut for the flute length or operate without appropriate coolant strategy for the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/4 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\u003eCorner Radius Tolerance\u003c\/strong\u003e: -0.0020 to +0.0020 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 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\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Zplus (PVD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\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\u003eTIR Maximum\u003c\/strong\u003e: 0.0003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Cutting\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\u003eMaterial Removal Type\u003c\/strong\u003e: Roughing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum, Non-Ferrous Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, High Temperature Alloy, Hard Material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: H45AL-C-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.672 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: 81308\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51737082429746,"sku":"81308","price":473.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d32bd40e8cc1887b967ed33fedffffab_d59a52ec-3348-401d-a57f-4ab98e75910d.jpg?v=1788784023","url":"https:\/\/voomisupply.com\/products\/helical-solutions-81308-corner-radius-end-mill-3-4in-3-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}