{"product_id":"accupro-12178721-corner-radius-end-mill-5-8-in-7-flute-altin","title":"Accupro 12178721 Corner Radius End Mill 5\/8 in 7 Flute Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12178721 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. It features a 5\/8-inch diameter, a 0.03-inch corner radius, and 7 variable-index flutes with a right-hand spiral and right-hand cutting direction. The 37-degree helix angle promotes efficient chip evacuation and reduces cutting forces. An AlTiN coating delivers excellent heat resistance and wear life, making this tool well suited for hard steels, stainless alloys, and other difficult-to-machine materials. This is a single-end, centercutting tool, meaning it can plunge directly into a workpiece as well as cut along the periphery.\u003c\/p\u003e\u003cp\u003eThis end mill is intended for use in CNC machining centers and manual mills where a corner radius is required to reduce stress concentrations, improve surface finish on part fillets, or meet tight dimensional tolerances on hardened or abrasive workpiece materials. The centercutting geometry supports slotting, profiling, and ramping operations. The 1-5\/8-inch length of cut accommodates moderate-depth passes in both roughing and finishing applications. The 5\/8-inch shank diameter fits standard ER collet chucks and end mill holders common in production and job-shop environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.03-inch corner radius reduces stress risers and improves fillet surface finish\u003c\/li\u003e\n\u003cli\u003e7-flute variable-index geometry minimizes chatter and supports high material removal rates\u003c\/li\u003e\n\u003cli\u003eAlTiN coating provides oxidation resistance and extended tool life at elevated cutting temperatures\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables plunging, slotting, ramping, and helical interpolation\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate delivers hardness and edge integrity in abrasive materials\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand spiral configuration compatible with standard CNC spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-mount replacement or new-install corner radius end mill for standard 5\/8-inch end mill holders, ER collet chucks, and hydraulic or shrink-fit toolholders accepting a 5\/8-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this tool should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool is secured to the specified torque of the toolholder manufacturer before starting any cut. Verify runout at the cutting edge after tool installation using a dial indicator, as excessive runout accelerates wear and can cause premature breakage. Follow the toolholder manufacturer guidelines and applicable shop safety standards when handling carbide cutting tools.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.625 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 or minus 0.0015 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.0025 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.625 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\u003eHelix Angle\u003c\/strong\u003e: 37 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\u003eSingle or Double End\u003c\/strong\u003e: Single End\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\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.561 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: 12178721\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51735466508594,"sku":"12178721","price":178.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6926aca9de6f8d00683d53c91af9e391_d84e5ce1-de0b-4f6d-a358-026bccf2813f.jpg?v=1788772588","url":"https:\/\/voomisupply.com\/products\/accupro-12178721-corner-radius-end-mill-5-8-in-7-flute-altin","provider":"Voomi Supply","version":"1.0","type":"link"}