{"product_id":"promax-us362280-square-end-mill-3-4-in-3-flute-carbide","title":"Promax US362280 Square End Mill 3\/4 in 3 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PROMAX US362280 is a solid carbide square end mill designed for precision milling operations in metal fabrication and machining environments. With a 3\/4-inch mill diameter, 1-inch length of cut, and a 3-inch overall length, this tool handles slotting, profiling, and peripheral milling on a range of workpiece materials. The 46\/48 degree variable helix geometry reduces chatter and improves chip evacuation compared to standard fixed-helix tools. A ZrN (zirconium nitride) coating increases surface hardness and heat resistance, extending tool life in production runs. This end mill is installed and operated by machinists and CNC programmers working with vertical or horizontal milling machines and machining centers.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for use in job shops, production machining cells, and tool rooms handling ferrous and non-ferrous materials. The three-flute configuration balances chip clearance with cutting edge count, making it a practical choice for both roughing and semi-finishing passes. The variable index feature further suppresses harmonic vibration, which is especially useful in longer reach setups or when cutting harder alloys. The straight-cylindrical shank is compatible with standard ER collet chucks and end mill holders commonly found in CNC and manual milling setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/4-inch mill diameter with a matching 3\/4-inch straight-cylindrical shank for secure tool holding\u003c\/li\u003e\n\u003cli\u003e46\/48 degree variable helix with variable index for reduced chatter and improved surface finish\u003c\/li\u003e\n\u003cli\u003eZrN coating for elevated hardness and thermal resistance during cutting\u003c\/li\u003e\n\u003cli\u003eThree-flute design optimizes chip evacuation while maintaining cutting edge strength\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate provides rigidity and wear resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use solid carbide end mill for standard 3\/4-inch ER collet chucks and end mill holders on CNC machining centers and manual milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following the machine tool manufacturer's tooling and runout specifications. Confirm collet or holder bore size matches the 3\/4-inch shank before securing. Ensure the spindle is fully stopped and the machine is in a safe state before inserting or removing the tool. Follow applicable shop safety procedures and machine guarding requirements during setup and operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/4 inches (0.7500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1 inch (1.0000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/4 inches (0.7500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 46\/48 degrees variable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: ZrN (Zirconium Nitride)\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\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\u003eLength of Cut Range\u003c\/strong\u003e: 1.0000 - 1.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: US362\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.69 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: PROMAX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: US362280\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PROMAX","offers":[{"title":"Default Title","offer_id":52055089414450,"sku":"US362280","price":191.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/779b956a124b46d3eb42ddde21ff4d99_2fd159fd-bf44-47ab-8a96-d12bd5acbb21.jpg?v=1790037326","url":"https:\/\/voomisupply.com\/products\/promax-us362280-square-end-mill-3-4-in-3-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}