{"product_id":"guhring-9006590060400-cobalt-stub-drill-bit-0-2378-in","title":"Guhring 9006590060400 Cobalt Stub Drill Bit 0.2378 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9006590060400 is a stub-length, screw machine cobalt drill bit designed for high-performance drilling in demanding metalworking applications. Built to DIN 1897 standards, this Series 659 bit features a parabolic flute geometry and web-thinned point that work together to improve chip evacuation and reduce thrust load. The 130-degree split point improves self-centering on entry and minimizes walking on hard or slippery workpiece surfaces. At 0.2378 inches in diameter with an overall length of 2.7559 inches, this bit is sized for stub-length rigidity in close-clearance setups. It is installed and used by machinists and tool-room technicians on CNC drilling centers, drill presses, and manual machines.\u003c\/p\u003e\u003cp\u003eThis bit is rated for drilling titanium alloy as its primary workpiece material, making it appropriate for aerospace, medical, and precision machining applications where tool life and hole quality in difficult alloys are critical. The cobalt construction provides heat resistance needed for work-hardening materials. The parallel web configuration and 3xD flute-to-diameter ratio support consistent performance across short-depth holes. Maximum drilling depth is 0.864 inches. The straight-cylindrical shank at 0.2378 inches diameter seats cleanly in standard drill chucks and collet holders.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt tool material for heat resistance in titanium alloy and other hard metals\u003c\/li\u003e\n\u003cli\u003eParabolic flute design with web thinning improves chip flow and reduces thrust\u003c\/li\u003e\n\u003cli\u003e130-degree standard point angle with web-thinned geometry for positive self-centering\u003c\/li\u003e\n\u003cli\u003eStub length (DIN 1897) provides added rigidity in short-reach drilling setups\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank compatible with standard chucks and collet systems\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, 2-flute configuration for general-purpose hole-making in metalwork\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a DIN 1897 stub-length replacement drill bit suitable for use in standard drill chucks and collet holders accepting a 0.2378-inch straight-cylindrical shank. Primary workpiece material rating is titanium alloy per manufacturer specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists or toolroom technicians familiar with cutting tool setup and machine operation. Ensure the machine spindle is fully stopped and locked out before mounting or removing the bit from its holder. Verify chuck or collet grip is within the shank diameter tolerance range before operation. Follow shop-standard speeds and feeds for cobalt tooling in titanium alloy to avoid work-hardening or premature tool wear.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.2378 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.7559 inches (70.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 31.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2378 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.5354 inches (39.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.864 inches (21.94 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Parabolic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.022 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 659\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 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: 9006590060400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51730812961074,"sku":"9006590060400","price":54.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cbb2a437840fdd7598593e3901f4ff10.jpg?v=1788723271","url":"https:\/\/voomisupply.com\/products\/guhring-9006590060400-cobalt-stub-drill-bit-0-2378-in","provider":"Voomi Supply","version":"1.0","type":"link"}