{"product_id":"hertel-72308307-chucking-reamer-size-30-cobalt-steel","title":"Hertel 72308307 Chucking Reamer Size 30 Cobalt Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 72308307 is a wire-gauge chucking reamer designed to finish-ream drilled holes to a precise diameter of 0.1285 inches, corresponding to wire size No. 30. Constructed from cobalt steel with a bright, uncoated finish, this reamer delivers the hardness and heat resistance needed for production and maintenance machining applications. The straight-cylindrical shank allows direct mounting in drill chucks, collets, or machine tool holders. With a 3.5-inch overall length and a 0.875-inch straight flute, it is suited for controlled material removal on through-holes and blind holes where tight tolerances are required. Machinists and tool-and-die technicians are the primary users of this tool.\u003c\/p\u003e\u003cp\u003eThis chucking reamer is used in manual drilling setups, CNC machining centers, and turret lathes wherever accurate hole sizing in the 0.1000 to 0.1499-inch decimal range is needed. It is a practical choice for repair shops, toolrooms, and production environments that require consistent, repeatable hole geometry in ferrous and non-ferrous metals. The cobalt steel construction provides added durability when working with harder workpiece materials compared to standard high-speed steel reamers.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire size No. 30 diameter: 0.1285 inches, within the 0.1000 to 0.1499-inch range\u003c\/li\u003e\n\u003cli\u003eCobalt steel construction for improved hardness and heat resistance\u003c\/li\u003e\n\u003cli\u003eStraight flute geometry suitable for through-hole and blind-hole reaming\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — ready to use out of the box\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank for compatibility with standard drill chucks and collets\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction, standard for conventional machine tool setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style chucking reamer for use in drill presses, CNC machining centers, turret lathes, and hand-held drilling equipment accepting straight-cylindrical shank tooling in the applicable diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist or toolroom technician. Secure the straight-cylindrical shank firmly in a drill chuck or collet before operation, and verify runout before reaming to tolerance-critical holes. Power down and de-energize the machine spindle before loading or removing the reamer. Follow applicable shop safety procedures and ANSI machining standards when operating cutting tools at speed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Wire Size)\u003c\/strong\u003e: No. 30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Decimal Inch)\u003c\/strong\u003e: 0.1285 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter Range\u003c\/strong\u003e: 0.1000 to 0.1499 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\u003eFlute Length\u003c\/strong\u003e: 0.875 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: 72308307\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728992436530,"sku":"72308307","price":42.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/09858ac7a4699b50513997f6c7a95830_cd616f5a-5949-46ee-a8cc-ccb8a633015b.jpg?v=1788698524","url":"https:\/\/voomisupply.com\/products\/hertel-72308307-chucking-reamer-size-30-cobalt-steel","provider":"Voomi Supply","version":"1.0","type":"link"}