{"product_id":"hertel-72308315-chucking-reamer-size-31-cobalt-steel","title":"Hertel 72308315 Chucking Reamer Size 31 Cobalt Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 72308315 is a straight-flute chucking reamer manufactured from cobalt steel for finishing drilled holes to a precise diameter. Sized to wire gauge 31, it produces a 0.1200-inch finished bore with consistent accuracy across production and maintenance applications. The bright, uncoated cobalt steel construction provides good heat resistance and edge retention when reaming ferrous and harder alloy materials. At 3.5 inches overall length with a 0.875-inch flute length and a straight-cylindrical shank, the tool mounts directly in drill chucks, collet chucks, or floating holders on drill presses, lathes, and CNC machining centers. Right-hand cutting direction follows standard reaming practice.\u003c\/p\u003e\u003cp\u003eThis reamer is suited for light-stock-removal finishing operations where a close-tolerance hole is required in metal fabrication, maintenance repair, and production machining environments. The straight-cylindrical shank allows secure clamping in standard drill chucks without the need for specialty toolholders. It is appropriate for use in both manual machine operations and low-to-moderate-speed CNC applications. Machinists and tool-room technicians working with wire-gauge-sized holes in the 0.1000-inch to 0.1499-inch decimal range will find this size category directly applicable.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire size 31 reamer producing a 0.1200-inch finished bore diameter\u003c\/li\u003e\n\u003cli\u003eCobalt steel construction for improved heat and wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eStraight flute geometry for clean chip evacuation in through-hole and short blind-hole applications\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish — no coating buildup to affect dimensional tolerance\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank for direct chuck mounting without adapters\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction compatible with standard machine spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard chucking reamer for use in drill presses, engine lathes, turret lathes, and CNC machining centers equipped with drill chucks or collet holders accepting a straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed machinist or tool-room technician should verify spindle speed and feed rate are appropriate for the workpiece material before use. Power down and lock out the machine before mounting or removing the reamer from the holder. Secure the straight-cylindrical shank fully within the chuck jaws or collet to prevent pullout under cutting load. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Wire Size)\u003c\/strong\u003e: 31\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter (Decimal Inch)\u003c\/strong\u003e: 0.1200 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReamer Diameter Range\u003c\/strong\u003e: 0.1000 - 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\u003eTool Material\u003c\/strong\u003e: Cobalt Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: 72308315\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51736782930226,"sku":"72308315","price":54.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/09858ac7a4699b50513997f6c7a95830_708768bd-7717-4fb1-90f0-f32d0aee037f.jpg?v=1788780331","url":"https:\/\/voomisupply.com\/products\/hertel-72308315-chucking-reamer-size-31-cobalt-steel","provider":"Voomi Supply","version":"1.0","type":"link"}