{"product_id":"accupro-315394-corner-radius-end-mill-1-4-in-solid-carbide","title":"Accupro 315394 Corner Radius End Mill 1\/4 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 315394 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 1\/4 inch mill diameter, a 3\/8 inch length of cut, and a 0.030 inch corner radius that reduces stress concentrations at the base of pocketed features. The ZrN (zirconium nitride) coating provides a hard, low-friction surface that extends tool life at elevated cutting temperatures. With a 37-degree variable-geometry helix and three right-hand spiral flutes, it evacuates chips efficiently and delivers a clean finish on floor and wall surfaces. This is a centercutting tool, making it capable of plunge entry without a pre-drilled pilot hole.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for die and mold work, deep-pocket milling, and profile operations where extended reach is required. The extended reach design — with a 1-1\/8 inch reach length and a reduced neck diameter of 0.2375 inches — allows access to recessed floors and stepped features that standard-length tools cannot reach. It is used in CNC machining centers and manual knee mills by machinists working in tool rooms, job shops, and production environments. Single-end configuration means it is replaced rather than reindexed when worn.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid micrograin carbide construction for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eZrN coating reduces friction and extends tool life in demanding cuts\u003c\/li\u003e\n\u003cli\u003e0.030 inch corner radius minimizes stress risers at pocket floors\u003c\/li\u003e\n\u003cli\u003eExtended reach with 1-1\/8 inch reach length and 0.2375 inch neck diameter for deep-feature access\u003c\/li\u003e\n\u003cli\u003eThree right-hand spiral flutes with centercutting capability for direct plunge entry\u003c\/li\u003e\n\u003cli\u003eTight corner radius tolerance of plus or minus 0.002 inches for consistent radius geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 1\/4 inch collets and end mill holders on CNC machining centers and manual milling machines. Intended for right-hand spindle rotation. Compatible with tool holders accepting a 1\/4 inch straight shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or CNC setup technician using an appropriate collet or end mill holder rated for 1\/4 inch shanks. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Confirm runout at the shank before engaging the cut, as excessive runout accelerates wear and can fracture the carbide. Do not exceed the recommended depth of cut for the material and coating — consult the cutting data for ZrN-coated solid carbide tools at the applicable spindle speed and feed rate.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/8 inch (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.2375 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\u003eCorner Radius\u003c\/strong\u003e: 0.030 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: plus 0.002 to minus 0.002 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: plus 0.000000 \/ minus 0.003000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: minus 0.0001 \/ minus 0.0004 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 37 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: ZrN (Zirconium Nitride)\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\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\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\u003eWeight\u003c\/strong\u003e: 0.02 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: 315394\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51732496941362,"sku":"315394","price":92.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5f9a5e93365f944e19ec00310e8ce869.jpg?v=1788743601","url":"https:\/\/voomisupply.com\/products\/accupro-315394-corner-radius-end-mill-1-4-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}