{"product_id":"osg-hp441-7874-bn-ball-end-mill-4-flute-solid-carbide","title":"Osg HP441-7874-BN Ball End Mill 4 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG HP441-7874-BN is a solid carbide ball end mill from the HP441BN Hy-Pro-Carb series, engineered for extended tool life in demanding machining environments. It features a 0.7874-inch (20 mm) cutting diameter, a 1.4961-inch (38 mm) length of cut, and four helical flutes at a 35-degree helix angle. The cutting geometry is right-hand with a single-end configuration and a straight-cylindrical shank. A TiAlN (Titanium Aluminum Nitride) PVD coating adds heat and wear resistance, making this tool well-suited for aggressive material removal and finish passes in one tool.\u003c\/p\u003e\u003cp\u003eThis end mill is designed for use across a broad range of workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials. It handles both roughing and finishing operations, making it a versatile choice for tool-and-die shops, aerospace component machining, and general precision machining centers. The submicron carbide grade substrate supports edge integrity at elevated cutting speeds typical in these applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide submicron-grade substrate for superior edge retention\u003c\/li\u003e\n\u003cli\u003eTiAlN PVD coating for extended tool life in high-heat cutting conditions\u003c\/li\u003e\n\u003cli\u003e4 right-hand helical flutes with 35-degree helix angle for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eBall nose geometry supports both roughing and finishing in a single tool\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank with h6 tolerance for consistent runout in standard toolholders\u003c\/li\u003e\n\u003cli\u003eCompatible with steel, stainless steel, cast iron, superalloys, titanium, and hard materials\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eRated for use on workpiece materials coded P (steel), M (stainless steel), K (cast iron), S (superalloys and titanium), and H (hard materials) per ISO material classification. Suitable for CNC machining centers with standard straight-bore toolholders accepting a 20 mm shank diameter.\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 stopped and the machine is in a safe state before tool changes. Use a properly sized collet or toolholder with adequate clamping force to minimize runout; excessive runout accelerates edge wear on carbide tooling. Confirm cutting parameters against the material being machined and the machine spindle rating before operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.7874 inches (20 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.4961 inches (38 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.0157 inches (102 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.7874 inches (20 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Radius\u003c\/strong\u003e: 0.3937 inches (10 mm)\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: 35 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Helical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Configuration\u003c\/strong\u003e: Single End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.0015 inches (+0.000 \/ -0.038 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide (Submicron Grade)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN (PVD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Removal Type\u003c\/strong\u003e: Roughing and Finishing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\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\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HP441BN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Metric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.9 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HP441-7874-BN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51749038686514,"sku":"HP441-7874-BN","price":411.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/56432cd64a29a5f776d0271edf7a7b19_f11e8c9a-063e-49fe-82c0-8333053bb883.jpg?v=1788901238","url":"https:\/\/voomisupply.com\/products\/osg-hp441-7874-bn-ball-end-mill-4-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}