{"product_id":"hertel-72309156-chucking-reamer-letter-o-6-in-cobalt","title":"Hertel 72309156 Chucking Reamer Letter O 6 in Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 72309156 is a chucking reamer designed for precision hole finishing in metalworking applications. Ground to a Letter O diameter of 0.3160 inches, this reamer is manufactured from cobalt steel for improved hardness and heat resistance compared to standard high-speed steel. The straight flute geometry and bright uncoated finish suit it for use in a wide range of ferrous and non-ferrous materials. With an overall length of 6 inches and a 1.5-inch flute length, the tool is sized for use in manual or CNC chucking setups where consistent bore sizing and surface finish are required.\u003c\/p\u003e\u003cp\u003eThis chucking reamer is intended for machine-tool use in job shop, production, and maintenance environments. It is suited for sizing holes that have been pre-drilled or bored to near-final diameter. The straight-cylindrical shank allows direct mounting in drill chucks, collet chucks, or floating reamer holders. Right-hand cutting direction is standard for conventional spindle rotation. Machinists, toolmakers, and maintenance technicians working in fabrication, tooling, or repair applications are the typical end users of this style of reamer.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter O diameter: 0.3160 inches, falling within the 0.3000 to 0.3499 inch decimal range\u003c\/li\u003e\n\u003cli\u003eCobalt steel construction for elevated heat resistance and tool life in harder materials\u003c\/li\u003e\n\u003cli\u003eStraight flute design for smooth cutting action and easier chip evacuation in through-hole applications\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish — ready to use as ground, without additional surface treatment\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank for direct mounting in standard chucking setups\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction for use with conventional 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 machine-tool applications requiring a Letter O diameter bore finish with a straight-cylindrical shank interface.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this reamer should be performed by a qualified machinist or toolmaker. Ensure the machine spindle is fully stopped and the tool is securely clamped in the holder before starting the cut. Use appropriate cutting fluid for the workpiece material to maximize tool life and hole finish quality. Follow standard shop practices and applicable safety codes when operating machine tools.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Letter)\u003c\/strong\u003e: O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Decimal Inch)\u003c\/strong\u003e: 0.3160 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter Range\u003c\/strong\u003e: 0.3000 to 0.3499 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.5 inches\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: Cobalt Steel\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: 0.15 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: 72309156\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51746387624242,"sku":"72309156","price":73.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/acab5d520777aa0c60a932f66ce96a62_82da775a-f0f1-4613-807e-b7de730ac534.jpg?v=1788869339","url":"https:\/\/voomisupply.com\/products\/hertel-72309156-chucking-reamer-letter-o-6-in-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}