{"product_id":"accupro-314128-corner-radius-end-mill-3-4in-zrn-coated","title":"Accupro 314128 Corner Radius End Mill 3\/4in Zrn Coated","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 314128 is a solid carbide, center-cutting corner radius end mill designed for high-performance milling operations where precise corner geometry and extended reach are required. It features a 3\/4-inch mill diameter, a 1-5\/8-inch length of cut (1.6250 inches), and a 6-inch overall length, making it well suited for deep-pocket and long-reach applications. The ZrN (zirconium nitride) coating improves hardness and heat resistance, extending tool life in demanding cutting conditions. With a 45-degree helix angle and two right-hand spiral flutes, this end mill delivers efficient chip evacuation and smooth cutting action on a wide range of materials. Micrograin carbide substrate provides rigidity and wear resistance at the cutting edge.\u003c\/p\u003e\n\u003cp\u003eThis end mill is used in precision machining environments including job shops, tool-and-die operations, aerospace component manufacturing, and mold and die work. The extended reach design, with a 3-3\/8-inch reach length (3.3750 inches) and a neck diameter of 0.7125 inches, allows access to deep cavities and complex profiles where standard-length tools cannot reach. It is a single-end tool with a 3\/4-inch shank diameter, compatible with standard collet chucks and end mill holders in that bore size. The 0.030-inch corner radius reduces stress concentration at the tool tip and leaves a controlled radius on inside corners of machined features.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid micrograin carbide construction for superior rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eZrN coating for improved heat resistance and extended tool life\u003c\/li\u003e\n  \u003cli\u003eExtended reach design: 3.3750-inch reach length with 0.7125-inch neck diameter\u003c\/li\u003e\n  \u003cli\u003e0.030-inch corner radius with tight tolerance of +0.00200 to -0.00200 inches\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting capability allows direct plunge entry\u003c\/li\u003e\n  \u003cli\u003e45-degree helix angle with right-hand cutting direction for efficient chip removal\u003c\/li\u003e\n  \u003cli\u003eTwo-flute spiral design suited for slotting, profiling, and deep-pocket milling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit cutting tool for standard 3\/4-inch bore collet chucks and end mill holders used in CNC machining centers and manual milling machines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is powered down before loading or changing tooling. Secure the 3\/4-inch shank in a properly sized, clean collet or end mill holder to the torque specifications of the holder manufacturer. Verify runout with a dial indicator before initiating a cutting program, particularly given the extended reach geometry of this tool.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.7500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.6250 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 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\u003eNeck Diameter\u003c\/strong\u003e: 0.7125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 3.3750 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: +0.00200 to -0.00200 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.003000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0004 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 degrees\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 Type\u003c\/strong\u003e: Corner Radius\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: ZrN (Zirconium Nitride)\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 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\u003eWeight\u003c\/strong\u003e: 1 pound\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: 314128\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51749343789362,"sku":"314128","price":489.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f6693bc0288ec5ba4ebb4aacb65ea9d1_38fcdbd5-1897-4105-80c0-13da9a976e1e.jpg?v=1788904739","url":"https:\/\/voomisupply.com\/products\/accupro-314128-corner-radius-end-mill-3-4in-zrn-coated","provider":"Voomi Supply","version":"1.0","type":"link"}