{"product_id":"accupro-312130-corner-radius-end-mill-3-8-in-5-flute-carbide","title":"Accupro 312130 Corner Radius End Mill 3\/8 in 5 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 312130 is a solid carbide corner radius end mill designed for precision milling operations in demanding machining environments. Built from micrograin solid carbide and coated with AlCrTiN for heat and wear resistance, this end mill features a 3\/8 inch diameter, a 1\/2 inch length of cut, and a 4 inch overall length. The corner radius measures 0.030 inches, reducing stress concentration at the cutting edge and extending tool life in finishing and semi-finishing applications. With 5 flutes and a 38-degree helix, it delivers smooth chip evacuation and improved surface finish. The extended reach design, with a 1-1\/8 inch reach length and reduced neck diameter of 0.356 inches, allows access to deep features without sacrificing rigidity.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for machining hardened steels, stainless steels, and high-temperature alloys in aerospace, die and mold, and general precision machining applications. The centercutting geometry allows plunge entry, giving machinists flexibility in toolpath strategies. The variable index flute spacing reduces harmonic chatter, making it a practical choice for high-speed and high-feed programs on modern CNC machining centers. Single-end construction keeps the tool profile compact for toolchanger compatibility.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlCrTiN coating for high heat resistance and extended tool life in ferrous and hardened materials\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate for superior hardness and edge retention\u003c\/li\u003e\n\u003cli\u003e0.030 inch corner radius reduces edge chipping and improves workpiece surface finish\u003c\/li\u003e\n\u003cli\u003e5-flute, 38-degree helix geometry promotes efficient chip evacuation and reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing minimizes chatter during high-speed machining\u003c\/li\u003e\n\u003cli\u003eExtended reach with 1-1\/8 inch reach length and reduced 0.356 inch neck diameter for deep-feature access\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables plunge milling and ramping entry moves\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for CNC machining centers requiring a 3\/8 inch shank, single-end corner radius end mill with extended reach geometry.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tool should be installed by a qualified machinist following standard CNC toolsetting procedures. Secure the shank in a collet or end mill holder torqued to the machine spindle manufacturer specifications. Verify runout with a dial indicator before cutting. Always confirm spindle speed, feed rate, and depth of cut are appropriate for the workpiece material before engaging the cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 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: 1\/2 inch (0.5000 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\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.030 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 1-1\/8 inch (1.1250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.356 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 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\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\u003eExtended Reach\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\u003eWeight\u003c\/strong\u003e: 0.04 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: 312130\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51753449554226,"sku":"312130","price":119.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/218a9bb0ec85e0bcef2be0718319066c_20224d43-82fd-4ee4-a0ec-c7149f7c585d.jpg?v=1788936901","url":"https:\/\/voomisupply.com\/products\/accupro-312130-corner-radius-end-mill-3-8-in-5-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}