{"product_id":"osg-8556300-corner-radius-end-mill-12-mm-4-flute-carbide","title":"Osg 8556300 Corner Radius End Mill 12 Mm 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 8556300 is a solid carbide corner radius end mill designed for high-performance milling across a wide range of workpiece materials. Built to Series 8215 specifications, it features a 12 mm cutting diameter, a 2 mm corner radius, and a 26 mm length of cut. The variable helix geometry reduces harmonic vibration during cutting, supporting both roughing and finishing operations in a single tool. A Duarise PVD coating provides thermal and wear resistance, extending tool life in demanding applications. The straight-cylindrical shank measures 12 mm in diameter with an h6 tolerance, ensuring accurate fitment in standard toolholders. Installed by machinists and tool-and-die professionals, this end mill suits CNC machining centers and manual mills alike.\u003c\/p\u003e\u003cp\u003eThe OSG 8556300 is suited for milling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. Its centercutting design allows plunge entry, making it effective for slot milling, profiling, contouring, and pocket milling. The corner radius geometry distributes cutting forces away from sharp corners, reducing edge chipping and improving surface finish in both roughing and finishing passes. This end mill is well-matched to applications where tool life and dimensional consistency across mixed-material workloads are priorities.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e12 mm cutting diameter with 2 mm corner radius and 26 mm length of cut\u003c\/li\u003e\n\u003cli\u003eVariable helix flute geometry reduces vibration and chatter during aggressive cuts\u003c\/li\u003e\n\u003cli\u003eDuarise PVD coating for enhanced wear resistance and heat management\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003cli\u003eHandles roughing and finishing in a single tool, reducing changeover time\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute direction for standard CNC toolholder compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard straight-bore toolholders accepting a 12 mm shank diameter (h6 tolerance). Compatible with CNC machining centers and manual mills configured for right-hand rotation. Suitable for workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials (ISO material codes P, M, K, N, S, H).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the tool-change cycle is complete before handling. Seat the shank fully into the toolholder and torque the retention mechanism to the toolholder manufacturer's specification. Verify runout at the tool tip before beginning production cuts, as excessive runout accelerates wear on a corner radius end mill and degrades dimensional accuracy.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 12 mm (0.4724 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 26 mm (0.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 90 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 12 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Duarise (PVD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Type\u003c\/strong\u003e: Variable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\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: 0.00 to -0.02 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: 0.00 to -0.02 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\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\u003eCoolant Through\u003c\/strong\u003e: No\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\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metal, Superalloys and Titanium, Hard Material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 8215\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.46 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: 8556300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51753055912242,"sku":"8556300","price":206.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/01c785dee25ce39b4e07acdecb3ad634_f02ae32f-82f1-442c-a045-21df382438e6.jpg?v=1788932480","url":"https:\/\/voomisupply.com\/products\/osg-8556300-corner-radius-end-mill-12-mm-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}