{"product_id":"walter-prototyp-8417750-corner-radius-end-mill-5-flute","title":"Walter-prototyp 8417750 Corner Radius End Mill 5 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER-PROTOTYP 8417750 is a solid carbide corner radius end mill engineered for demanding material removal in superalloys, titanium, stainless steel, and general steel applications. It features a 3\/4 inch cutting diameter, a 0.1900 inch corner radius, and 5 flutes with a 38-degree helix angle for aggressive chip evacuation and stable cutting performance. The nACRo (WJ30EN) coating provides thermal resistance and wear protection at elevated cutting temperatures common in hard-material machining. This tool is single-end, centercutting, and configured for both roughing and finishing operations. It is installed and run by machinists and CNC programmers in job shop, aerospace, and industrial manufacturing environments.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for full-slot and peripheral milling in tight-tolerance applications involving superalloys and titanium as the primary workpiece material, with secondary capability in stainless steel and carbon steel. The extended reach configuration, with a 4.3071 inch reach length and 3-1\/4 inch length of cut, allows access to deep pockets and stepped features where standard-reach tools cannot be used. The straight-cylindrical shank with h6 tolerance ensures consistent runout in standard collet and hydraulic chuck toolholding systems. It is part of the MA377.A-5-R series.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.1900 inch corner radius reduces stress concentration and improves tool life at the cutting edge\u003c\/li\u003e\n  \u003cli\u003enACRo coating (WJ30EN) provides high-temperature hardness and oxidation resistance for superalloy and titanium cutting\u003c\/li\u003e\n  \u003cli\u003e5-flute geometry supports both roughing and finishing in a single tool, reducing changeover time\u003c\/li\u003e\n  \u003cli\u003e38-degree helix angle promotes smooth chip flow and reduced cutting forces in long-reach applications\u003c\/li\u003e\n  \u003cli\u003eExtended reach with 4.3071 inch reach length enables deep-pocket and stepped-feature access\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 3\/4 inch straight-cylindrical collet chucks, hydraulic chucks, and shrink-fit toolholders accepting an h6-tolerance shank. Primary workpiece material is superalloys and titanium (ISO material code S); secondary materials include stainless steel (M) and steel (P).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool should be installed by a qualified machinist following the toolholder manufacturer specifications for clamping torque and runout verification. Always confirm spindle speed, feed rate, and depth of cut against the MA377.A-5-R series cutting data recommendations before operation. Inspect the shank and collet bore for contamination or damage before seating the tool. Extended-reach tools are more sensitive to vibration; verify setup rigidity and minimize overhang beyond the specified reach length.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.1900 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 4.3071 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\u003eCoating\u003c\/strong\u003e: nACRo (WJ30EN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eSingle or Double End\u003c\/strong\u003e: Single\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\u003eExtended Reach\u003c\/strong\u003e: Yes\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: Superalloys and Titanium (ISO code S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Stainless Steel (M), Steel (P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MA377.A-5-R\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Catalog Number\u003c\/strong\u003e: MA377.19.1A5L483K-WJ30EN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.11 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: 8417750\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":67912989114674,"sku":"8417750","price":802.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6fa04719102ff79ab267f20f8595f128.jpg?v=1791241366","url":"https:\/\/voomisupply.com\/products\/walter-prototyp-8417750-corner-radius-end-mill-5-flute","provider":"Voomi Supply","version":"1.0","type":"link"}