{"product_id":"guhring-9055200031000-cobalt-stub-drill-bit-0-122-in","title":"Guhring 9055200031000 Cobalt Stub Drill Bit 0.122 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9055200031000 is a cobalt stub-length (screw machine length) drill bit designed for high-speed drilling in production and shop environments. Built to DIN 1897 standards, it measures 0.122 inches (3.10 mm) in diameter with an overall length of 49.00 mm and a flute length of 18.00 mm. The 118-degree four-facet split point reduces walking at entry and lowers thrust force, making it well suited for precision drilling in soft to medium-hardness materials. The two-flute spiral design with a web-thinned, tapered web configuration promotes efficient chip evacuation and consistent cutting performance. Licensed machinists, tool-and-die makers, and general metalworking shops are the primary installers and users of this bit.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for primary use in aluminum and similar non-ferrous workpiece materials, though its cobalt construction supports use across a range of applications where heat resistance is a factor. The straight-cylindrical shank accepts standard drill chucks without adapters. The stub-length body offers greater rigidity than jobber-length bits, reducing deflection in short-hole drilling operations. Maximum drilling depth is 0.526 inches (13.35 mm), and the flute-to-diameter ratio is 3xD. This makes it appropriate for CNC machining centers, drill presses, and hand-held power tools used in production environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt tool material provides elevated heat resistance for demanding cutting cycles\u003c\/li\u003e\n  \u003cli\u003e118-degree four-facet split point reduces drill walking and lowers entry thrust\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web improves chip flow and reduces cutting resistance\u003c\/li\u003e\n  \u003cli\u003eDIN 1897 stub-length body increases rigidity and minimizes deflection\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute with straight-cylindrical shank for universal chuck compatibility\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance of +0.000 to -0.018 mm for consistent hole sizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-specification replacement or new-installation stub-length drill bit for use in standard drill chucks accepting a 3.10 mm straight-cylindrical shank, conforming to DIN 1897.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and used by machinists, toolmakers, and metalworking technicians. Secure the straight-cylindrical shank fully in the drill chuck and verify chuck key tightening before operation. Always use appropriate cutting fluid or coolant when drilling metal, even though this bit does not support through-coolant delivery. Inspect the cutting edges and point geometry before each use and replace the bit if chipping or wear is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.122 inches (3.10 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 49.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 18.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.526 inches (13.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Four Facet Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3.10 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.018 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 5520\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.004 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: 9055200031000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51749535777074,"sku":"9055200031000","price":17.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/905a5006a23292a1fffffa23d3b1b98c_5aeac565-9fdf-4bcc-9897-28cae60dbb31.jpg?v=1788907336","url":"https:\/\/voomisupply.com\/products\/guhring-9055200031000-cobalt-stub-drill-bit-0-122-in","provider":"Voomi Supply","version":"1.0","type":"link"}