{"product_id":"osg-hp441-4331-bn-ball-end-mill-4-flute-solid-carbide","title":"Osg HP441-4331-BN Ball End Mill 4 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG HP441-4331-BN is a solid carbide ball end mill engineered for demanding material removal in both roughing and finishing operations. Part of the OSG Hy-Pro-Carb HP441BN series, it features a 0.4331-inch (11 mm) cutting diameter, a 35-degree helix angle, and a TiAlN (titanium aluminum nitride) PVD coating that supports elevated cutting speeds and extended tool life. The four-flute, right-hand helical geometry promotes efficient chip evacuation while maintaining surface finish quality. This tool is built from submicron carbide grade stock, making it suitable for high-productivity applications where consistency across tool changes is critical.\u003c\/p\u003e\n\u003cp\u003eThis end mill is intended for use on CNC machining centers and milling machines in job shop, production, and die-mold environments. Its geometry and coating make it well suited for cutting steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The single-end, straight-cylindrical shank seats directly in standard collet chucks or end mill holders. With a 0.9843-inch (25 mm) length of cut and 70 mm overall length, it handles moderate-depth pocketing, contouring, and profile milling without excessive overhang.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid submicron carbide construction for rigidity and wear resistance in hard and abrasive materials\u003c\/li\u003e\n  \u003cli\u003eTiAlN PVD coating extends tool life at elevated cutting temperatures\u003c\/li\u003e\n  \u003cli\u003e4-flute right-hand helical geometry supports both roughing and finishing passes\u003c\/li\u003e\n  \u003cli\u003e35-degree medium helix angle balances cutting force and chip flow\u003c\/li\u003e\n  \u003cli\u003e5.50 mm nose radius provides a true ball-end profile for 3D contouring\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank with h6 tolerance for secure, repeatable runout in standard toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for secondary workpiece materials including steel (P), stainless steel (M), cast iron (K), superalloys and titanium (S), and hard materials (H) per ISO material classification. Part of the OSG HP441BN series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool changer or drawbar is de-energized before inserting or removing the tool. Seat the shank fully into a properly sized collet or end mill holder and torque the retention mechanism to the toolholder manufacturer's specification. Verify runout with a dial indicator before beginning a production cut, particularly when machining hard or abrasive materials where edge integrity is critical.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.4331 inches (11.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\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\u003eLength of Cut\u003c\/strong\u003e: 0.9843 inches (25.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 0.9843 inches (25.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.7559 inches (70.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.4331 inches (11.00 mm)\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 \/ -0.038 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNose Radius\u003c\/strong\u003e: 5.50 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 35 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Style\u003c\/strong\u003e: Medium\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\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single End\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\u003ePackage Weight\u003c\/strong\u003e: 0.4 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: HP441-4331-BN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51731365462322,"sku":"HP441-4331-BN","price":130.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/974d9ebe77cbbee654bd00a43461eca3_7666b2ff-3072-4e5f-8f76-e876e5550f08.jpg?v=1788730028","url":"https:\/\/voomisupply.com\/products\/osg-hp441-4331-bn-ball-end-mill-4-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}