{"product_id":"accupro-39802434-ball-end-mill-1-4-in-4-flute-carbide","title":"Accupro 39802434 Ball End Mill 1\/4 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 39802434 is a solid carbide ball end mill designed for precision milling operations in ferrous and hardened materials. Built with a 1\/4 inch cutting diameter and a 2-1\/2 inch overall length, this single-end tool features four flutes and an AlTiCrN coating that provides excellent heat resistance and extended tool life at elevated cutting temperatures. The 0.2130 inch length of cut and 0.0780 inch neck length make it well suited for detailed profiling, contouring, and finishing passes in tight-clearance areas. Solid carbide construction delivers rigidity and wear resistance that high-speed steel tools cannot match in demanding applications.\u003c\/p\u003e\u003cp\u003eThis ball end mill is used in CNC machining centers and manual milling machines for 3D contouring, die and mold work, and complex profiling cuts. The variable index geometry helps reduce harmonic chatter during cutting, which is especially valuable when machining hardened steels, stainless alloys, and similar difficult materials. The 1\/4 inch shank diameter fits standard collets and end mill holders found on most benchtop and full-size vertical machining centers. It is a single-end tool, so the full cutting geometry is concentrated at one end for maximum rigidity.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlTiCrN coating improves heat resistance and extends tool life in high-temperature cutting environments\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing reduces chatter and vibration during profiling passes\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction provides rigidity and wear resistance for hardened and abrasive materials\u003c\/li\u003e\n\u003cli\u003eFour-flute design increases material removal rate compared to two-flute equivalents at the same chip load\u003c\/li\u003e\n\u003cli\u003eBall nose geometry enables 3D contouring, ramp milling, and radius floor finishing\u003c\/li\u003e\n\u003cli\u003eSingle-end configuration maximizes shank engagement and minimizes deflection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 1\/4 inch shank ball end mill compatible with collet chucks, end mill holders, and shrink-fit toolholders accepting 1\/4 inch straight shanks on CNC machining centers and conventional vertical mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the machine in a full stop and the spindle locked. Ensure the collet or holder is clean and free of chips before seating the shank to the recommended engagement depth. Verify runout with a dial indicator after installation, as excessive runout will accelerate wear and degrade surface finish. Tool selection, speeds, and feeds should be confirmed against the workpiece material and machine capability before beginning a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.2500 inches (1\/4 inch)\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\u003eLength of Cut\u003c\/strong\u003e: 0.2130 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.0780 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 inches (1\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiCrN\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\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.066 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: 39802434\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51753403089202,"sku":"39802434","price":80.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/715f51715300c832b6e384787b93aeb5.jpg?v=1788936372","url":"https:\/\/voomisupply.com\/products\/accupro-39802434-ball-end-mill-1-4-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}