{"product_id":"walter-prototyp-7266772-corner-radius-end-mill-1-8-in-4-flute","title":"Walter-prototyp 7266772 Corner Radius End Mill 1\/8 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER-PROTOTYP 7266772 is a solid carbide corner radius end mill designed for high-performance machining of hard materials. Built to the MC187 series specification, it features a 1\/8 inch diameter cutting edge with a 0.015 inch corner radius and four helical flutes in a right-hand cutting direction. The tool carries a TiAlSiN (AlTiN) PVD coating applied over a fine-grain carbide substrate, which extends tool life when cutting hardened steels and other difficult alloys. With an overall length of 2.5 inches and a 1\/4 inch straight cylindrical shank, it mounts directly into standard toolholders. This end mill is intended for use by machinists and CNC operators in job shop, die-mold, and production environments.\u003c\/p\u003e\n\u003cp\u003eThe 7266772 is suited for roughing and finishing operations on hard materials, designated under material code H. Its extended reach design, with a reach length of approximately 1.083 inches, makes it appropriate for cutting pockets, slots, and contoured surfaces where tool clearance is a factor. The 1\/2 inch length of cut and high helix style support chip evacuation in demanding cuts. This tool fits standard toolholder setups and is used in CNC machining centers running high-speed or hard-milling strategies on hardened workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction with fine-grain substrate for rigidity and wear resistance in hard material applications\u003c\/li\u003e\n  \u003cli\u003eTiAlSiN PVD coating (AlTiN classification) extends tool life in hardened steel and abrasive alloy cuts\u003c\/li\u003e\n  \u003cli\u003e0.015 inch corner radius reduces stress concentration at the cutting edge and improves surface finish\u003c\/li\u003e\n  \u003cli\u003eHigh helix, four-flute geometry supports efficient chip removal during roughing and finishing passes\u003c\/li\u003e\n  \u003cli\u003eExtended reach with 1.083 inch reach length accommodates deeper pocket and contour work\u003c\/li\u003e\n  \u003cli\u003eRight-hand flute direction and right-hand cutting direction for standard CNC spindle compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard straight-shank toolholders accepting a 1\/4 inch shank diameter. Suited for CNC machining centers performing hard milling, die-mold work, or finish machining on hardened materials classified under material group H.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and tool changes should be performed by qualified machinists with the spindle powered down and the machine in a safe, locked-out state. The 1\/4 inch straight cylindrical shank with h6 tolerance is intended for collet or shrink-fit toolholders; verify runout after installation to maximize tool life. Do not use this tool on non-center-cutting applications that require plunging without a pre-drilled entry point, as this end mill is not center-cutting. Follow the toolholder manufacturer torque specifications and machine tool guidelines for proper clamping force.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/8 inch (0.1250 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.015 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 (0.1181 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 1.083 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 50 degrees, High Helix style\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Fine Grain\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlSiN (AlTiN), PVD applied\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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: h10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\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\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 Material\u003c\/strong\u003e: Hard Material (Code H)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MC187\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: WALTER-PROTOTYP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7266772\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":67913163637042,"sku":"7266772","price":184.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/410be47b1ef832faf71da9f84dcfb8d6_2b56978a-6027-489a-8fb1-01252d191cf7.jpg?v=1791243154","url":"https:\/\/voomisupply.com\/products\/walter-prototyp-7266772-corner-radius-end-mill-1-8-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}