{"product_id":"accupro-310100-corner-radius-end-mill-1-4-inch-4-flute","title":"Accupro 310100 Corner Radius End Mill 1\/4 Inch 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 310100 is a solid carbide corner radius end mill designed for precision milling in metalworking and machining applications. It features a 1\/4 inch diameter with a 0.0200 inch corner radius, a 4-flute configuration, and a 38-degree helix angle. The cutting edges are coated with AlCrTiN for improved heat and wear resistance at elevated cutting speeds. With a 1\/2 inch length of cut and 2-1\/2 inch overall length, this centercutting tool handles both plunge and peripheral milling. The micrograin solid carbide substrate supports tighter tolerances and longer tool life in ferrous and hardened materials. It is sold as a single-end tool with right-hand flute direction and right-hand cutting direction.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for use on CNC machining centers and manual mills in job shops, toolrooms, and production environments. Typical applications include profiling, slotting, and contouring where a controlled edge radius is required to reduce stress concentrations in the finished workpiece. The variable index geometry helps suppress chatter during aggressive cuts. The 1\/4 inch shank fits standard ER collet chucks and end mill holders common in both vertical and horizontal machining setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlCrTiN coating provides oxidation resistance and extends tool life in high-speed dry or near-dry cutting\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate for superior hardness and edge retention\u003c\/li\u003e\n\u003cli\u003e4-flute, variable index design reduces harmonic vibration and chatter\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003e0.0200 inch corner radius reduces edge chipping and stress risers in profiled features\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand spiral suitable for conventional CNC milling setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for 1\/4 inch shank end mill holders, ER collet systems, and compatible CNC or manual milling machine spindles requiring a corner radius end mill in the HS series.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully powered down and at rest before changing tooling. Seat the shank fully into the collet or end mill holder to the recommended engagement depth per the holder manufacturer guidelines, and torque the retention hardware with the appropriate spanner or pull-stud wrench. Verify runout with a dial indicator before beginning a production cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1\/2 inch (0.5000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/2 inches (63.5 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0200 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 38 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlCrTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\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\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 310100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51755190550834,"sku":"310100","price":60.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c4e367406d5afec29bc14070a67a0fdc.jpg?v=1788952010","url":"https:\/\/voomisupply.com\/products\/accupro-310100-corner-radius-end-mill-1-4-inch-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}