{"product_id":"guhring-9038990011500-micro-drill-bit-1-15mm-carbide","title":"Guhring 9038990011500 Micro Drill Bit 1.15mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9038990011500 is a solid carbide micro drill bit designed for precision drilling in ferrous and cast iron workpieces. It carries a TiAlN coating that resists heat and wear during high-speed cutting operations. The bit features a 140-degree faceted point with web thinning for improved centering and reduced thrust at entry. With an overall length of 38 mm and a flute length of 10 mm, it is sized for tight-tolerance work in machining, toolroom, and production environments. A right-hand spiral flute clears chips efficiently in short-cycle drilling applications. The h7 diameter tolerance on the 1.15 mm cutting edge supports consistent hole quality without secondary finishing in many applications.\u003c\/p\u003e\n\u003cp\u003eThis micro drill bit is suited for drilling cast iron and steel in CNC machining centers, drill presses, and precision manual setups. The straight-cylindrical shank measures 3 mm in diameter, making it compatible with standard collet chucks and drill chucks used in toolroom and production machining. The 5xD flute-to-diameter ratio and 8.28 mm maximum drilling depth fit shallow-hole drilling cycles typical in component manufacturing, fixture work, and precision part production. It is installed and used by machinists, toolroom technicians, and CNC operators working to close tolerances.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction with K40 material grade for rigidity and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003eTiAlN coating provides thermal barrier and extends tool life in dry or near-dry cutting\u003c\/li\u003e\n  \u003cli\u003e140-degree faceted point with web thinning reduces entry thrust and improves self-centering\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute with regular spiral type promotes efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eh7 diameter tolerance on 1.15 mm cutting diameter supports tight-tolerance hole requirements\u003c\/li\u003e\n  \u003cli\u003e3 mm straight-cylindrical shank fits standard collet and drill chuck toolholding systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in drilling cast iron and steel workpieces as noted by primary workpiece material codes K and P. The 3 mm straight-cylindrical shank fits standard collet chucks and drill chucks accepting that shank diameter. Part of GUHRING Series 3899 micro drill tooling.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by a qualified machinist or CNC operator familiar with micro-diameter tooling. Always confirm spindle runout and collet condition before use, as concentricity errors are amplified at small diameters and can cause premature breakage. Ensure the machine spindle is fully stopped and the toolholder is de-energized before changing or inspecting the bit. Follow the machine tool manufacturer guidelines for speed and feed parameters appropriate to the workpiece material and drill diameter.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1.15 mm (0.0453 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 38 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 10 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 8.28 mm (0.326 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Faceted\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: K40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3899\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.003 pounds\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: GUHRING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9038990011500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51752615903538,"sku":"9038990011500","price":48.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a3b1ff8f610a0e8d8a5a6079767ab2b1_d151b726-6310-468c-b7e0-48c8df1f2a7c.jpg?v=1788929383","url":"https:\/\/voomisupply.com\/products\/guhring-9038990011500-micro-drill-bit-1-15mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}