{"product_id":"accupro-311204-ball-end-mill-1-2-in-4-flute-solid-carbide","title":"Accupro 311204 Ball End Mill 1\/2 in 4 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 311204 is a solid carbide ball end mill designed for precision milling operations in metalworking and machining applications. It features a 1\/2 inch (0.5000 inch) mill diameter with a 5\/8 inch length of cut and a 2-1\/2 inch overall length. The four-flute configuration combined with a 38-degree helix angle promotes efficient chip evacuation and smooth cutting action. An AlTiCrN coating provides thermal resistance and extended tool life in demanding materials. The micrograin carbide substrate offers rigidity and wear resistance. This tool is installed and operated by machinists and CNC programmers in job shops, production facilities, and tool rooms.\u003c\/p\u003e\u003cp\u003eThe 311204 is suited for profiling, slotting, and contouring operations on ferrous and non-ferrous metals where a ball-nose geometry is required for 3D surface work or radius floor features. The straight cylindrical shank measures 1\/2 inch in diameter, making it compatible with standard ER collet chucks, end mill holders, and shrink-fit tooling systems. Right-hand cutting and right-hand flute direction are standard. The variable index geometry helps reduce harmonic vibration during cut, improving surface finish at higher feed rates. This is a single-end, standard-length tool in the ACCUPRO HS series.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/2 inch mill diameter with 5\/8 inch length of cut for controlled radial engagement\u003c\/li\u003e\n\u003cli\u003e4-flute, right-hand cut and flute direction for efficient material removal\u003c\/li\u003e\n\u003cli\u003e38-degree helix angle promotes chip flow and reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eAlTiCrN coating for elevated heat resistance and extended tool life\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing reduces chatter and improves surface finish\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate delivers rigidity and edge retention\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank for compatibility with standard toolholding systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard 1\/2 inch straight-bore end mill holders, ER collet chucks, and shrink-fit toolholding systems commonly used in CNC machining centers and manual mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following the toolholder manufacturer's torque and runout specifications. Ensure the machine spindle is fully stopped and locked out before loading or changing tooling. Verify tool projection and runout with a dial indicator before initiating a cut. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.5000 inches (12.70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.625 inches (15.87 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5000 inches (63.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 38 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiCrN\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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\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\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.001 inches\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: 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: 311204\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51753879929138,"sku":"311204","price":133.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fa10e8721d689449dae3c06beb6209d0.jpg?v=1788941780","url":"https:\/\/voomisupply.com\/products\/accupro-311204-ball-end-mill-1-2-in-4-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}