{"product_id":"osg-4551211-corner-chamfer-end-mill-0-75in-3-flute-tialn","title":"Osg 4551211 Corner Chamfer End Mill 0.75in 3 Flute Tialn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 4551211 is a corner chamfer end mill designed for precision chamfering and edge-breaking operations in ferrous and hardened materials. Built from cobalt high-speed steel and coated with TiAlN, it handles elevated cutting temperatures and maintains edge integrity at higher speeds than uncoated tools. The 0.75 inch cutting diameter and 0.75 inch length of cut are suited to moderate-depth chamfer passes in a single setup. The three-flute geometry balances chip evacuation with rigidity, and the center-cutting design allows plunge entry when required. HVAC fabricators, tool-and-die shops, and general machining operations rely on this profile for consistent chamfer quality on structural and precision components.\u003c\/p\u003e\u003cp\u003eThe OSG 4551211 fits standard milling applications requiring a right-hand cut, right-hand helix, and fine-pitch geometry. It is appropriate for CNC vertical mills, knee mills, and machining centers accepting a 0.75 inch straight shank. The 30-degree helix angle promotes smooth chip flow on steel, stainless, and cast iron workpieces. At 2.875 inches overall length, it fits most standard tool holders without extended-reach adapters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTiAlN coating improves heat resistance and extends tool life in dry or minimal-lubrication cutting\u003c\/li\u003e\n\u003cli\u003eCobalt substrate provides toughness in interrupted cuts and harder workpiece materials\u003c\/li\u003e\n\u003cli\u003eCenter-cutting geometry permits direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003cli\u003eThree-flute design balances chip clearance and cutting stability\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand helix for use in standard CNC and manual mill spindles\u003c\/li\u003e\n\u003cli\u003eFine pitch for smooth surface finish on chamfer edges\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct substitute for 0.75 inch corner chamfer end mill applications in standard milling operations requiring a 0.75 inch straight shank and three-flute cobalt geometry.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a qualified machinist or toolroom technician. Secure the shank fully in a collet or end mill holder to the manufacturer-specified grip depth before engaging the spindle. Inspect the TiAlN coating and cutting edges for chips or wear before each use. Follow applicable shop safety procedures and machine guarding requirements when changing or running end mills.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut (LOC)\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.75 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: 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\u003ePitch\u003c\/strong\u003e: Fine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrate Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Cutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.7 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: 4551211\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728320299314,"sku":"4551211","price":190.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/16fe96e883211bcd0b1d6de476518ff7.jpg?v=1788690444","url":"https:\/\/voomisupply.com\/products\/osg-4551211-corner-chamfer-end-mill-0-75in-3-flute-tialn","provider":"Voomi Supply","version":"1.0","type":"link"}