{"product_id":"robbjack-c1-201-18-square-end-mill-9-16-in-2-flute-carbide","title":"Robbjack C1-201-18 Square End Mill 9\/16 in 2 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROBBJACK C1-201-18 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. With a 9\/16-inch diameter, 1-1\/4-inch length of cut, and 3-1\/2-inch overall length, this tool handles slotting, profiling, and peripheral milling in ferrous and non-ferrous materials. The 2-flute geometry and 30-degree helix angle promote efficient chip evacuation, reducing heat buildup and tool wear. Centercutting capability allows plunge entry directly into the workpiece. This end mill is uncoated solid carbide in material grade C2, offering rigidity and wear resistance for general-purpose milling applications. Machinists and CNC operators in job shops and production environments are the primary users.\u003c\/p\u003e\n\u003cp\u003eThe C1-201-18 fits standard milling applications where a regular-length, right-hand cut, right-hand flute end mill is required. The 9\/16-inch shank diameter matches the mill diameter for direct collet or end mill holder mounting in milling machines and machining centers. Its 2-flute design suits softer metals and materials where chip clearance is a priority, as well as general steel milling at appropriate feed and speed parameters. The uncoated finish makes it a cost-effective choice for shops running general-purpose material removal without requiring specialized coatings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e9\/16-inch cutting diameter with 1-1\/4-inch length of cut for standard milling reach\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction, material grade C2, for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003e2-flute spiral geometry with 30-degree helix angle for effective chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge entry into the workpiece\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand flute configuration for standard spindle rotation\u003c\/li\u003e\n  \u003cli\u003eUncoated finish suited for general-purpose milling without specialty coating requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style solid carbide square end mill in the ROBBJACK C1-201 series, compatible with collet chucks and end mill holders accepting a 9\/16-inch shank diameter on standard vertical and horizontal milling machines and CNC machining centers.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation of this end mill should be performed by qualified machinists familiar with CNC or manual milling equipment. Power down and lock out the spindle before mounting or removing the tool. Ensure the collet or tool holder is clean, undamaged, and properly torqued to the machine manufacturer's specification before running. Do not exceed the tool's rated depth of cut or length of cut for the material being machined.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 9\/16 inch (0.5625 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/4 inch (1.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 9\/16 inch (0.5625 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.003 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: +0.060 \/ -0.060 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: C1-201\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 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: ROBBJACK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C1-201-18\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROBBJACK","offers":[{"title":"Default Title","offer_id":52047196848434,"sku":"C1-201-18","price":300.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0bb36773a7ee8f071e2f90fa4a8a2998.jpg?v=1790031776","url":"https:\/\/voomisupply.com\/products\/robbjack-c1-201-18-square-end-mill-9-16-in-2-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}