{"product_id":"hertel-79890307-chucking-reamer-5-16-inch-solid-carbide","title":"Hertel 79890307 Chucking Reamer 5\/16 Inch Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 79890307 is a solid carbide chucking reamer designed for precision hole finishing in metalworking and machining applications. With a 5\/16 inch (0.3125 inch) diameter and a tight tolerance of 0.0000 to 0.0003 inches, it delivers accurate, repeatable bore sizing in a single pass. The bright, uncoated carbide construction handles hardened and abrasive materials where high-speed steel tooling falls short. At 3-1\/4 inches overall length with a 1-1\/8 inch flute length and 6 straight flutes, this reamer suits general-purpose through-hole and blind-hole finishing on CNC machining centers, knee mills, and drill presses. Machinists and tool-and-die professionals specify this style for tight-tolerance bore work.\u003c\/p\u003e\u003cp\u003eThis chucking reamer is suited for production and job-shop environments requiring consistent hole quality in ferrous and non-ferrous metals. The straight cylindrical shank seats directly in standard drill chucks, collets, or floating reamer holders without special adapters. The right-hand cutting direction is compatible with conventional machine spindle rotation. Applications include finishing drilled or bored holes to precise diameter for press-fit pins, bushings, and close-tolerance assemblies in general machining, mold and die work, and light manufacturing.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in abrasive or hardened materials\u003c\/li\u003e\n\u003cli\u003eDiameter tolerance of 0.0000 to 0.0003 inches for precise hole sizing\u003c\/li\u003e\n\u003cli\u003e6 straight flutes for smooth cutting action and consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for a wide range of metals and cutting fluids\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard chucks and collet systems without adapters\u003c\/li\u003e\n\u003cli\u003eRight-hand cut compatible with conventional machine spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style chucking reamer for use in standard drill chucks, ER collet systems, or floating holders on CNC machining centers, knee mills, and drill presses accepting a straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eChucking reamers are installed and operated by machinists in machine shop environments. Secure the shank fully in a clean, true-running chuck or collet and verify runout before cutting. Power down the machine spindle completely before mounting or removing the tool. Always use appropriate cutting fluid for the workpiece material, and never hand-ream with a power-tool chucking reamer as it is designed for machine use only.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter\u003c\/strong\u003e: 5\/16 inch (0.3125 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter Range\u003c\/strong\u003e: 0.3000 to 0.3499 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: 0.0000 to 0.0003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting 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\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDowel Pin Reamer\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver\/Under Size Reamer\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241611\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 79890307\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51754011984178,"sku":"79890307","price":142.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4a35b350c3cf3809a633e63deebd68aa.jpg?v=1788942888","url":"https:\/\/voomisupply.com\/products\/hertel-79890307-chucking-reamer-5-16-inch-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}