{"product_id":"hertel-e7020016-ball-end-mill-0-25in-4-flute-cobalt-ticn","title":"Hertel E7020016 Ball End Mill 0.25in 4 Flute Cobalt Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL E7020016 is a single-end ball end mill designed for precision milling operations in metalworking and machining applications. Built from M42 cobalt high-speed steel, it offers superior heat and wear resistance compared to standard HSS tooling. The cutting end is finished with a TiCN (Titanium Carbonitride) coating, which further extends tool life and reduces friction at the cutting edge. At 0.25 inches in diameter with a 0.625-inch length of cut and a 30-degree right-hand helix, this mill is suited for profiling, slotting, and contouring passes requiring a ball-nose geometry. Licensed machinists and toolroom professionals are the primary installers and operators.\u003c\/p\u003e\u003cp\u003eThis end mill fits standard CNC machining centers, vertical mills, and manual knee mills equipped with an ER or collet chuck sized for a 3\/8-inch shank. The 0.25-inch ball nose diameter makes it a practical choice for finishing passes on curved surfaces, cavities, and three-dimensional contour work in ferrous and nonferrous metals. Its regular-length configuration at 2.4375 inches overall length provides adequate reach for most production and toolroom setups without sacrificing rigidity.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction for elevated heat resistance and extended tool life in demanding cuts\u003c\/li\u003e\n\u003cli\u003eTiCN coating reduces friction and improves wear resistance over uncoated HSS tooling\u003c\/li\u003e\n\u003cli\u003e4-flute spiral design provides a smooth finish and efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003e30-degree right-hand helix balances cutting forces and surface finish quality\u003c\/li\u003e\n\u003cli\u003eSingle-end ball nose geometry suited for 3D contouring and profiling operations\u003c\/li\u003e\n\u003cli\u003e3\/8-inch shank diameter for broad compatibility with standard collet and chuck systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC and manual milling machines accepting a 3\/8-inch round shank. Suitable for cutting ferrous and nonferrous metals where cobalt tooling is specified.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down or in a safe lockout state before changing tooling. Seat the shank fully in the collet or chuck and torque the retention nut to the machine and toolholder specification. Verify runout with a dial indicator before beginning a production cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.4375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\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\u003eVariable Index\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: E7020016\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51755206246706,"sku":"E7020016","price":37.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ebc84f06cf508eee8d2058ef9abb6394.jpg?v=1788952170","url":"https:\/\/voomisupply.com\/products\/hertel-e7020016-ball-end-mill-0-25in-4-flute-cobalt-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}