{"product_id":"osg-8556280-corner-radius-end-mill-12mm-4-flute-carbide","title":"Osg 8556280 Corner Radius End Mill 12mm 4-flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 8556280 is a solid carbide corner radius end mill designed for high-performance material removal across a broad range of workpiece materials. Built to Series 8215 specifications, it features a 12 mm cutting diameter, a 1 mm corner radius, and a 26 mm length of cut. The variable helix geometry reduces chatter and harmonics during aggressive cuts, making this tool suitable for both roughing and finishing operations in a single setup. A Duarise PVD coating enhances wear resistance and surface lubricity. Four flutes provide an efficient balance of chip evacuation and cutting edge engagement. Centercutting capability allows plunge entry without a pre-drilled hole.\u003c\/p\u003e\u003cp\u003eThe OSG 8556280 is intended for use in CNC machining centers and milling operations where consistent edge geometry and tight tolerances are required. Its material application range covers steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials, placing it in ISO material groups P, M, K, N, S, and H. It is well suited for die and mold work, aerospace component machining, and general precision milling where corner geometry integrity is critical. The straight-cylindrical 12 mm shank mounts directly into standard collet chucks or toolholders.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eVariable helix design reduces vibration and chatter during roughing and finishing cuts\u003c\/li\u003e\n\u003cli\u003eDuarise PVD coating provides elevated wear resistance across hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003e1 mm corner radius protects cutting edges and improves surface finish at part corners\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge milling without pilot drilling\u003c\/li\u003e\n\u003cli\u003eFour-flute configuration balances chip clearance with cutting edge contact\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute direction for standard CNC milling spindle compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard collet-style toolholders accepting a 12 mm straight-cylindrical shank. Compatible with CNC machining centers running steel, stainless steel, cast iron, non-ferrous metal, superalloys, titanium, and hard material workpieces (ISO material codes P, M, K, N, S, H).\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 changing tooling. Seat the shank fully into the toolholder and torque the collet nut to the toolholder manufacturer's specification. Verify runout at the cutting edge after clamping before beginning a cut, as excessive runout will accelerate edge wear and compromise corner radius tolerance.\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\u003eLength of Cut\u003c\/strong\u003e: 26 mm (1.0236 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 90 mm (3.543 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 12 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1 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\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\u003eCentercutting\u003c\/strong\u003e: Yes\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\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\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\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\u003ePackage Dimensions\u003c\/strong\u003e: 3.65 inches L x 0.75 inches W x 0.65 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.455 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: 8556280\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51754423615794,"sku":"8556280","price":207.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/01c785dee25ce39b4e07acdecb3ad634_93cb5fa2-f95e-42c3-b869-65d0d70eb12c.jpg?v=1788945219","url":"https:\/\/voomisupply.com\/products\/osg-8556280-corner-radius-end-mill-12mm-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}