{"product_id":"accupro-315256-ball-end-mill-3-8-in-3-flute-solid-carbide","title":"Accupro 315256 Ball End Mill 3\/8 in 3 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 315256 is a single-end ball end mill designed for contouring, profiling, and finishing operations in machining applications. Built from micrograin solid carbide, it delivers the rigidity and wear resistance required for cutting hardened steels, stainless, cast iron, and non-ferrous alloys. The tool features a 3\/8 inch cutting diameter, a 1\/2 inch length of cut, and a 37-degree helix angle that promotes efficient chip evacuation and smooth surface finish. A ZrN (zirconium nitride) coating adds lubricity and thermal resistance, extending tool life in high-speed and dry cutting conditions. Installed by machinists and CNC tool-and-die professionals, this end mill fits standard 3\/8 inch collets and tool holders.\u003c\/p\u003e\n\u003cp\u003eThis ball end mill is suited for 3-axis and multi-axis CNC machining centers handling mold and die work, complex curved surfaces, and finish passes on hardened workpieces. The 37-degree right-hand spiral flute geometry reduces cutting forces and chatter on light-to-moderate depths of cut. The micrograin carbide substrate supports tighter tolerances and sharper edges compared to standard carbide grades, making it a practical choice for precision shops working in steel, titanium, and high-temperature alloys.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMicrograin solid carbide construction for extended tool life and edge retention\u003c\/li\u003e\n  \u003cli\u003eZrN coating provides thermal resistance and reduced friction in dry or semi-dry cutting\u003c\/li\u003e\n  \u003cli\u003e37-degree right-hand helix promotes efficient chip evacuation and reduces cutting forces\u003c\/li\u003e\n  \u003cli\u003e3 flutes balance chip clearance with surface finish quality on finishing passes\u003c\/li\u003e\n  \u003cli\u003eSingle-end design with 3\/8 inch shank fits standard ER and shrink-fit collet systems\u003c\/li\u003e\n  \u003cli\u003eMill diameter tolerance of +0.000 \/ -0.002 inches supports close-tolerance profiling work\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 accepting a 3\/8 inch shank diameter. Suitable for cutting ferrous and non-ferrous materials including hardened steels, stainless steel, cast iron, and aluminum alloys.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Seat the shank fully in a clean, properly sized collet or tool holder and torque the retention nut to the tool holder manufacturer specification. Confirm runout with a dial indicator before initiating a cutting program, as excessive runout accelerates edge wear on carbide tooling.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1\/2 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: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 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 Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.002 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\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: 315256\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51731199721778,"sku":"315256","price":111.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f67839a2698d0e834b8904714c6dc78f.jpg?v=1788728207","url":"https:\/\/voomisupply.com\/products\/accupro-315256-ball-end-mill-3-8-in-3-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}