{"product_id":"hertel-79889838-chucking-reamer-0-249-in-solid-carbide","title":"Hertel 79889838 Chucking Reamer 0.249 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 79889838 is a solid carbide chucking reamer designed for precision hole finishing in machining applications. With a reamer diameter of 0.249 inches and a tight diameter tolerance of 0.0000 to 0.0002 inches, this tool delivers accurate, repeatable bore sizing in production and job-shop environments. It features a straight flute geometry and a straight cylindrical shank for secure chuck mounting. The 3-inch overall length and 1-inch flute length suit a range of through-hole and shallow blind-hole finishing operations. Machinists and CNC operators use this reamer where consistent bore geometry and surface finish are critical requirements.\u003c\/p\u003e\n\u003cp\u003eThis reamer is classified as an undersize reamer, with a listed undersize designation of 0.2490 U\/S, making it well-suited for applications requiring a close undersize fit or press-fit bore preparation. The right-hand cutting direction is compatible with standard CNC machining centers, knee mills, and drill presses. It performs in ferrous and non-ferrous materials where solid carbide tooling provides the rigidity and wear resistance needed to hold tight tolerances over extended production runs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in demanding machining applications\u003c\/li\u003e\n  \u003cli\u003eReamer diameter of 0.249 inches with a tolerance of 0.0000 to 0.0002 inches for precise bore sizing\u003c\/li\u003e\n  \u003cli\u003eUndersize designation of 0.2490 U\/S for press-fit and close-tolerance bore preparation\u003c\/li\u003e\n  \u003cli\u003eStraight flute design with 4 flutes for smooth cutting action\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish suitable for use with standard cutting fluids\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting direction compatible with standard machine setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a straight-shank chucking reamer for use in standard drill chucks, collet chucks, and CNC tool holders accepting a cylindrical shank. No specific OEM system compatibility was stated in the product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this reamer should be performed by a qualified machinist. Secure the straight cylindrical shank firmly in a drill chuck or collet before operation and verify runout is within acceptable limits before cutting. Always apply appropriate cutting fluid for the workpiece material to maximize tool life and bore finish quality. Do not exceed the tool manufacturer's recommended speeds and feeds for solid carbide reamers in the material being machined.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReamer Diameter\u003c\/strong\u003e: 0.249 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReamer Diameter Tolerance\u003c\/strong\u003e: 0.0000 to 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver\/Under Size\u003c\/strong\u003e: Undersize (0.2490 U\/S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241611\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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 79889838\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51744664289586,"sku":"79889838","price":100.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e4f488b96bc970da92fb22670b1c7c2b.jpg?v=1788859728","url":"https:\/\/voomisupply.com\/products\/hertel-79889838-chucking-reamer-0-249-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}