{"product_id":"accupro-12184958-ball-end-mill-5-16-in-4-flute-solid-carbide","title":"Accupro 12184958 Ball End Mill 5\/16 in 4 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12184958 is a solid carbide ball end mill designed for precision milling in metal, composite, and hard material applications. With a 5\/16-inch cutting diameter and a 1-1\/2-inch length of cut, this four-flute tool generates smooth contoured surfaces and complex 3D profiles. The extra-long 6-inch overall length provides extended reach into deep cavities and pockets where standard-length tooling cannot access. The 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces. A bright, uncoated finish makes this mill well suited to non-ferrous metals, cast iron, and applications where coating adhesion may not be preferred.\u003c\/p\u003e\u003cp\u003eThis end mill is used in CNC machining centers and manual milling machines for finishing passes, contour milling, and die-and-mold work requiring a ball-nose geometry. The extra-long reach configuration is particularly useful in aerospace, automotive, and tooling applications where deep-cavity access is required. Right-hand cut and right-hand flute direction are standard for conventional CNC spindle configurations. The micrograin carbide substrate supports higher cutting speeds and longer tool life compared to standard carbide grades in hardened and abrasive materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBall nose geometry for 3D contouring, profiling, and finishing passes\u003c\/li\u003e\n\u003cli\u003eFour-flute, spiral flute design for improved surface finish and feed rates\u003c\/li\u003e\n\u003cli\u003e40-degree helix angle promotes efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eExtra-long 6-inch OAL provides deep-cavity reach\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate for wear resistance in demanding materials\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish suitable for non-ferrous and general-purpose milling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use solid carbide ball end mill for CNC machining centers and manual mills accepting a 5\/16-inch round shank with right-hand cutting direction.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or CNC tooling technician. Ensure the spindle is fully powered down and locked out before changing tooling. Verify the collet or tool holder bore matches the 5\/16-inch shank diameter and torque the retention nut to the tool holder manufacturer specification. Inspect runout after installation; excessive runout will accelerate wear and degrade surface finish.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/16 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: 40 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\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eLength Type\u003c\/strong\u003e: Extra Long\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\u003eWeight\u003c\/strong\u003e: 0.12 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: 12184958\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51748694294834,"sku":"12184958","price":100.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b430e61febc1b7fe29586949bc63bb77.jpg?v=1788896855","url":"https:\/\/voomisupply.com\/products\/accupro-12184958-ball-end-mill-5-16-in-4-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}