{"product_id":"accupro-42419788-ball-end-mill-1-4-in-4-flute-solid-carbide","title":"Accupro 42419788 Ball End Mill 1\/4 in 4 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 42419788 is a single-end ball end mill designed for precision milling operations in ferrous and non-ferrous metals, stainless steel, and hardened workpiece materials. Built from solid carbide, it delivers the rigidity and wear resistance required for high-speed finishing and semi-finishing passes. The AlTiCrN coating provides thermal stability and oxidation resistance, extending tool life in demanding cut conditions. With a 1\/4 inch mill diameter, a 0.2130 inch length of cut, and a 4-flute geometry featuring a variable index design, this end mill is suited for machinists and tool-and-die professionals running CNC mills and machining centers.\u003c\/p\u003e\u003cp\u003eThis end mill is used in shop environments where tight-tolerance 3D contouring, profiling, and slotting operations are required. The ball-nose geometry makes it well suited for finishing curved surfaces, mold cavities, and contoured part features. The 1\/4 inch shank diameter fits standard ER collets and end mill holders commonly found in vertical machining centers and CNC routers. The single-end configuration is standard for tool change efficiency in production and prototype machining workflows.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and extended tool life in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eAlTiCrN coating provides oxidation resistance and thermal hardness at elevated cutting temperatures\u003c\/li\u003e\n\u003cli\u003e4-flute, variable index geometry reduces harmonic vibration and improves surface finish\u003c\/li\u003e\n\u003cli\u003eBall-nose tip geometry enables accurate 3D contouring and curved surface finishing\u003c\/li\u003e\n\u003cli\u003eSingle-end design with 1\/4 inch shank for compatibility with standard collet and tool holder systems\u003c\/li\u003e\n\u003cli\u003e2.5 inch overall length provides reach for moderate-depth cavity and profile work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers and manual mills equipped with 1\/4 inch collets or end mill holders. No specific machine model compatibility was stated in the product data.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully de-energized and locked out before loading or unloading the tool. Seat the shank fully into the holder to the recommended gauge line and torque the collet nut per the tool holder manufacturer specification. Verify runout with a dial indicator before initiating a cut, as excessive runout accelerates wear on carbide end mills and degrades surface finish.\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\u003eLength of Cut\u003c\/strong\u003e: 0.2130 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 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\u003eNeck Length\u003c\/strong\u003e: 0.1250 inches\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\u003c\/strong\u003e: AlTiCrN\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\u003eEnd Configuration\u003c\/strong\u003e: Single End\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: 42419788\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51727219982642,"sku":"42419788","price":80.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6ed0781a6f8a539a4437480f07b10787.jpg?v=1788674885","url":"https:\/\/voomisupply.com\/products\/accupro-42419788-ball-end-mill-1-4-in-4-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}