{"product_id":"cleveland-c52157-square-end-mill-5-16-in-2-flute-cobalt","title":"Cleveland C52157 Square End Mill 5\/16 in 2 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C52157 is a cobalt square end mill designed for high-performance metal removal in demanding machining applications. Built to M42 cobalt material grade, this double-end tool delivers extended tool life when cutting high temperature alloys, stainless steel, and steel. The C52157 measures 0.3125 inches in cutting diameter with a 0.5625-inch length of cut and a 0.375-inch straight-cylindrical shank that also accepts a Weldon flat drive. A 30-degree helix angle promotes efficient chip evacuation and reduces heat buildup at the cutting edge. This is a centercutting design, allowing direct plunge entry into workpieces without a pre-drilled pilot hole.\u003c\/p\u003e\u003cp\u003eThe C52157 belongs to Cleveland's HDC-2 series and is intended for use in CNC machining centers, manual knee mills, and similar setups where high-alloy and stainless materials are regularly machined. The right-hand cut and right-hand spiral flute geometry suits standard spindle rotation without modification. At 3.5 inches overall length and a regular length classification, this end mill is well-suited for general-purpose side milling, slotting, and profiling operations in tool rooms and production environments. Machinists and toolroom operators working with aerospace alloys, medical-grade stainless, and structural steel are the primary users.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction for elevated heat and wear resistance in high-alloy materials\u003c\/li\u003e\n\u003cli\u003eDouble-end design provides a second usable cutting end, extending tool service life\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry enables direct plunge cuts without pre-drilling\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle supports efficient chip flow and reduced cutting temperatures\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank with Weldon flat option for positive tool holding\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute for standard CNC and manual machine compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 3\/8-inch tool holders and collets. Primary workpiece materials include high temperature alloys, stainless steel, and steel, consistent with HDC-2 series application intent.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following standard toolroom practices. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before securing the end mill. Verify runout after installation using a dial indicator before beginning cuts. Consult machine manufacturer torque recommendations for set screw engagement on Weldon flat holders.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 9\/16 inches (0.5625 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches (0.375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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 with Weldon Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HDC-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: High Temperature Alloy, Stainless Steel, Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: CLEVELAND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C52157\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51692449562930,"sku":"C52157","price":54.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bf5ad13587c6264858184646987a008b.jpg?v=1788297668","url":"https:\/\/voomisupply.com\/products\/cleveland-c52157-square-end-mill-5-16-in-2-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}