{"product_id":"accupro-312082-corner-radius-end-mill-1-4-in-5-flute-carbide","title":"Accupro 312082 Corner Radius End Mill 1\/4 in 5 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 312082 is a solid carbide corner radius end mill designed for precision milling in demanding production environments. It carries a 1\/4 inch diameter, a 0.030 inch corner radius, and an AlCrTiN coating that extends tool life in high-heat, abrasive cutting conditions. The 5-flute, right-hand spiral geometry with a 38-degree helix angle promotes efficient chip evacuation and smooth surface finishes. The extended reach design accommodates deeper cavities and features a reduced neck diameter of 0.237 inches for clearance in tight workpiece geometries. This end mill is a centercutting single-end tool, appropriate for machinists and CNC operators working in tool and die, mold making, aerospace component machining, and general metalworking.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for use in CNC machining centers and manual mills requiring a long-reach, corner radius profile tool. The 3\/8 inch length of cut, 3\/4 inch reach length, and 4 inch overall length make it well-matched for cavity milling, profiling, and finishing operations where standard-length end mills lack adequate reach. It is intended for cutting ferrous and non-ferrous materials where AlCrTiN coatings provide thermal and oxidation resistance. Variable index fluting reduces chatter and harmonic vibration during side milling passes. Installation and use require a compatible 1\/4 inch collet or end mill holder.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAlCrTiN coating provides high-temperature resistance and extended tool life in abrasive materials\u003c\/li\u003e\n  \u003cli\u003e5-flute variable index geometry reduces chatter and improves surface finish quality\u003c\/li\u003e\n  \u003cli\u003eExtended reach with 0.237 inch neck diameter allows access to deep pockets and tight cavity walls\u003c\/li\u003e\n  \u003cli\u003e0.030 inch corner radius reduces stress concentration at the cutting edge and improves workpiece corner geometry\u003c\/li\u003e\n  \u003cli\u003e38-degree helix angle promotes efficient chip evacuation during aggressive side milling\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide construction delivers rigidity and wear resistance across a broad range of materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers and manual mills with a 1\/4 inch collet or end mill holder. Fits standard 1\/4 inch shank tool holders commonly used in production and job shop environments.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed by a machinist or CNC operator using a 1\/4 inch precision collet or shrink-fit end mill holder. Ensure the machine spindle is fully stopped and locked out before installing or removing the end mill. Verify runout at the tool tip before beginning the cut, as extended-reach tools are sensitive to holder concentricity. Do not exceed the manufacturer-rated depth of cut for the listed length of cut and neck diameter combination.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch (6.35 mm)\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: 0.3750 inches (9.53 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 0.7500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.0000 inches (101.6 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.2370 inches (0.23 mm listed as 0.23 in supplier data)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0300 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 38 degrees\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\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\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\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.001000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: 312082\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51732456472882,"sku":"312082","price":107.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/218a9bb0ec85e0bcef2be0718319066c_ff598f55-b624-4cc5-a234-1f5e62a086bb.jpg?v=1788742957","url":"https:\/\/voomisupply.com\/products\/accupro-312082-corner-radius-end-mill-1-4-in-5-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}