{"product_id":"guhring-9055200019800-cobalt-stub-drill-bit-5-64-in","title":"Guhring 9055200019800 Cobalt Stub Drill Bit 5\/64 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9055200019800 is a cobalt screw machine length (stub) drill bit designed for high-speed drilling in demanding shop and field applications. It measures 5\/64 inch (0.0781 inch decimal) in diameter with an overall length of 1.4173 inches and a flute length of approximately 0.433 inches. The 118-degree four facet split point geometry promotes accurate entry and reduces walking on startup. The web-thinned, tapered web construction reduces cutting thrust, making this bit well suited for production drilling environments where cycle time and tool life both matter. Licensed machinists, tool-and-die techs, and maintenance professionals are the typical users.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is built for stub-length applications where rigidity matters more than reach, such as close-tolerance work in fixtures, multi-spindle setups, and tight-clearance drilling. The Series 5520 designation follows DIN 1897 standards. Primary workpiece material is listed as aluminum, though the cobalt construction also handles harder materials that would wear out standard HSS bits. The straight-cylindrical shank fits standard drill chucks without adaptation. Maximum drilling depth is 0.356 inch (9.03 mm), consistent with a 3xD flute-to-diameter ratio.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt tool material for improved heat resistance and tool life versus standard HSS\u003c\/li\u003e\n  \u003cli\u003e118-degree four facet split point with web thinning for reduced thrust and accurate positioning\u003c\/li\u003e\n  \u003cli\u003eStub (screw machine) length per DIN 1897 for maximum rigidity in short-reach applications\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting, regular spiral flute, straight-cylindrical shank\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance held to +0.000 to -0.014 mm for consistent hole sizing\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through requirement — suitable for dry or flood-coolant setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a DIN 1897 Series 5520 stub drill bit fitting standard straight-cylindrical chuck systems; consult tooling setup documentation for spindle speed and feed recommendations specific to the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or maintenance technicians using a standard drill chuck or collet system. Ensure the shank is fully seated and the chuck is tightened securely before operation. Power down and lock out the spindle before changing bits. Do not exceed the rated maximum drilling depth of 0.356 inch per pass without retracting to clear chips.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 5\/64 inch (0.0781 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.4173 inches (36 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 11 mm (approximately 0.433 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0781 inch (1.98 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 0.9843 inch (25 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.356 inch (9.03 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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: Spiral, Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.014 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\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 (Screw Machine Length)\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: 9055200019800\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51728507896114,"sku":"9055200019800","price":87.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/905a5006a23292a1fffffa23d3b1b98c_1951ae12-c452-4a7e-83ea-aee061d197f5.jpg?v=1788692353","url":"https:\/\/voomisupply.com\/products\/guhring-9055200019800-cobalt-stub-drill-bit-5-64-in","provider":"Voomi Supply","version":"1.0","type":"link"}