{"product_id":"walter-prototyp-7254995-corner-radius-end-mill-5mm","title":"Walter-prototyp 7254995 Corner Radius End Mill 5mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WALTER-PROTOTYP 7254995 is a solid carbide corner radius end mill designed for high-performance milling in steel and hard materials. Running a 5 mm diameter with a 0.5 mm corner radius and a 13 mm length of cut, this three-flute tool operates as a single-end, centercutting end mill with a right-hand flute direction and right-hand cutting direction. The TiAlSiN PVD coating provides thermal resistance and wear protection suited to demanding steel applications. The helical flute geometry and coarse pitch support both roughing and finishing passes in a single tool, reducing changeovers on the shop floor. A licensed machinist or CNC setup technician handles installation and toolpath programming for this type of end mill.\u003c\/p\u003e\u003cp\u003eThe 7254995 fits into a straight-cylindrical toolholder at a 6 mm shank diameter with an h6 shank tolerance, making it compatible with standard collet chucks and precision toolholders used in CNC machining centers. The extended reach geometry includes a 21 mm reach length, useful for accessing deeper features without interference. Primary workpiece materials are steel and hard materials under ISO material codes P and H. Secondary workpiece material is steel. The MC388 series targets fine-grain carbide grade construction for consistent performance in production environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTiAlSiN PVD coating for thermal and abrasion resistance in steel and hard-material cutting\u003c\/li\u003e\n\u003cli\u003eThree helical flutes with high helix style for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows plunge entry into workpieces\u003c\/li\u003e\n\u003cli\u003eExtended reach with 21 mm reach length for deeper feature access\u003c\/li\u003e\n\u003cli\u003eCoarse pitch supports both roughing and finishing in a single tool\u003c\/li\u003e\n\u003cli\u003eh9 mill diameter tolerance and h6 shank tolerance for precise toolholder fit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard collet-style or precision toolholders accepting a 6 mm straight-cylindrical shank. Primary applications are in steel and hard materials (ISO codes P and H) on CNC vertical or horizontal machining centers.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a qualified CNC machinist or toolroom technician. Power down and lock out the spindle drive before loading or removing the tool from the toolholder. Seat the shank fully in the collet or holder and torque the retention mechanism per the toolholder manufacturer specifications. Verify runout with a dial indicator before engaging the workpiece, as excessive runout accelerates flute wear on small-diameter carbide tools.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5 mm (0.1969 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 13 mm (0.4724 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 57 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 21 mm (0.5120 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Style\u003c\/strong\u003e: High\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\u003eFlute Type\u003c\/strong\u003e: Helical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Configuration\u003c\/strong\u003e: Single End\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Fine Grain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlSiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Classification\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: h9\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 Material\u003c\/strong\u003e: Steel; Hard Material (ISO P; H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MC388\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 2.56 inches L x 0.47 inches W x 0.47 inches H\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 7254995\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":67909733024050,"sku":"7254995","price":143.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/92c4d630a867c00572c363f2b154d046_8fdc070d-35d2-47e4-b165-eba8701db488.jpg?v=1791190587","url":"https:\/\/voomisupply.com\/products\/walter-prototyp-7254995-corner-radius-end-mill-5mm","provider":"Voomi Supply","version":"1.0","type":"link"}