{"product_id":"hertel-e2020032-ball-end-mill-0-5in-4-flute-cobalt","title":"Hertel E2020032 Ball End Mill 0.5in 4 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL E2020032 is a cobalt ball end mill designed for milling operations that require a radiused cutting profile on the end of the tool. Built from M42 cobalt high-speed steel, it offers good heat and wear resistance in ferrous and non-ferrous materials. The 4-flute, single-end configuration with a 30-degree helix angle supports efficient chip evacuation and smooth cutting action. At 0.5 inches in diameter with a 1.25-inch length of cut, this tool is well-suited for profiling, contouring, and slotting passes where a ball-nose geometry is required. Right-hand cutting and right-hand flute direction are standard. The tool arrives uncoated with no variable helix or variable index.\u003c\/p\u003e\u003cp\u003eThis end mill is intended for use in CNC machining centers and manual knee mills across job shop, toolroom, and production environments. It handles profiling cuts in steel, alloy steel, stainless, and similar materials where cobalt tooling is the preferred grade. The regular-length body and 0.5-inch shank diameter allow direct installation in standard ER collet chucks, end mill holders, and Weldon-style holders without extended-reach adapters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction provides elevated red hardness compared to standard M2 HSS\u003c\/li\u003e\n\u003cli\u003eBall-nose geometry for radius profiling, contouring, and 3D surface milling\u003c\/li\u003e\n\u003cli\u003e4-flute design balances chip clearance with edge strength\u003c\/li\u003e\n\u003cli\u003e30-degree right-hand helix with right-hand cutting direction\u003c\/li\u003e\n\u003cli\u003eUncoated finish — suitable for re-sharpening and compatible with most cutting fluids\u003c\/li\u003e\n\u003cli\u003eSingle-end configuration; shank diameter matches cutter diameter at 0.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use cobalt ball end mill for standard 0.5-inch toolholders including ER collet systems, end mill holders, and Weldon-flat holders used in vertical and horizontal milling applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Power down and lock out the spindle before inserting or removing the tool from the holder. Ensure the shank is fully seated to the recommended engagement depth in the holder and that all set screws or collet nuts are torqued to the holder manufacturer's specification. Inspect the cutting edges for chips or damage before each use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 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: 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\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single End\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\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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: E2020032\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51736301404466,"sku":"E2020032","price":57.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66a105ce071bf5c8c6937d8aa9afe62b.jpg?v=1788777094","url":"https:\/\/voomisupply.com\/products\/hertel-e2020032-ball-end-mill-0-5in-4-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}