{"product_id":"guhring-9055250069000-extra-length-drill-bit-6-9mm-carbide","title":"Guhring 9055250069000 Extra Length Drill Bit 6.9mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9055250069000 is a solid carbide extra length drill bit engineered for high-performance drilling in demanding production and machining environments. The bit measures 6.9 mm in diameter with a 146 mm overall length and a 108 mm flute length, giving it the reach needed for deeper-hole applications beyond the range of standard-length tooling. It carries a FIREX coating for extended tool life and heat resistance, and the 140-degree point geometry with RT100 U point type supports self-centering and facet point grinding. Coolant-through capability is built in, making it suitable for high-speed CNC operations where heat management is critical. This tool is sized to the h7 diameter tolerance standard.\u003c\/p\u003e\u003cp\u003eThis drill bit is designed for machinists, tool-and-die technicians, and CNC operators working in job shop, production, or aerospace environments. Primary workpiece materials include cast iron and steel. Secondary materials include aluminum and titanium alloys. The 2-flute spiral configuration with a regular spiral type and web-thinned geometry promotes chip evacuation in deep-hole passes. At 12xD flute-to-diameter ratio, it handles drilling depths up to approximately 97.65 mm. The straight-cylindrical shank at 8 mm diameter seats into standard ER or straight-shank toolholders without adapters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003eFIREX coating provides thermal and oxidation resistance for extended tool life\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports high-speed, deep-hole drilling with active chip and heat management\u003c\/li\u003e\n\u003cli\u003e140-degree point angle with RT100 U geometry enables self-centering entry and reduces thrust force\u003c\/li\u003e\n\u003cli\u003eWeb-thinned design reduces cutting resistance at the chisel edge\u003c\/li\u003e\n\u003cli\u003e12xD flute-to-diameter ratio supports drilling depths up to 97.65 mm\u003c\/li\u003e\n\u003cli\u003eh7 diameter tolerance ensures consistent fit in precision toolholding systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003ePart of the GUHRING Series 5525 extra length drill program. Rated for primary workpiece materials cast iron and steel (ISO material codes K and P), with secondary compatibility for aluminum, titanium alloy, and other materials under ISO codes H, M, N, and S. Conforms to DIN 6537 standards.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist or CNC technician with the machine powered down and spindle locked before toolholder access. Seat the straight-cylindrical shank fully and evenly in a properly sized collet or toolholder to the specified clamping depth before torquing. Verify coolant-through passages are clear and coolant pressure is set to the machine and toolholder specification before initiating a drilling cycle. Consult applicable shop safety standards and machine manufacturer guidelines for runout verification and tool-change procedures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 6.9 mm (0.2717 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 146 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 108 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 36 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 97.65 mm (3.844 inches)\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: RT100 U\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 12xD\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\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: FIREX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\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\u003eSecondary Workpiece Material\u003c\/strong\u003e: Aluminum, Titanium Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 5525\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: DIN 6537, California Prop 65\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.054 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 9055250069000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51743353340210,"sku":"9055250069000","price":450.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1352c183cb118ac15910430ee87d152b_2dd773a5-b09b-4505-b5b1-3342eadd670f.jpg?v=1788846055","url":"https:\/\/voomisupply.com\/products\/guhring-9055250069000-extra-length-drill-bit-6-9mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}