{"product_id":"guhring-9055200074900-cobalt-stub-drill-bit-7-49mm","title":"Guhring 9055200074900 Cobalt Stub Drill Bit 7.49mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9055200074900 is a cobalt screw machine length (stub) drill bit designed for high-speed drilling applications in metalworking and industrial environments. Built to DIN 1897 standards, this bit features a 7.49mm diameter with a 118-degree four facet split point for accurate self-centering and reduced thrust. The web-thinned, tapered web construction improves chip evacuation and cutting efficiency. With a straight-cylindrical shank and two regular spiral flutes, this bit seats securely in standard drill chucks. It is intended for use by machinists, tool and die technicians, and maintenance professionals requiring a compact, rigid drill profile.\u003c\/p\u003e\n\u003cp\u003eThis stub-length drill bit is suited for close-tolerance drilling in applications where a shorter flute length provides increased rigidity and reduced deflection. The cobalt construction gives it elevated heat resistance compared to standard high-speed steel, making it appropriate for harder workpieces and sustained cutting cycles. The primary workpiece material rating is aluminum, though the cobalt composition supports use across a range of non-ferrous and ferrous materials. A 3xD flute-to-diameter ratio and 22.77mm maximum drilling depth make this bit well matched to shallow-hole production work on CNC machines, drill presses, and manual lathes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt tool material for superior heat resistance and wear life compared to standard HSS\u003c\/li\u003e\n  \u003cli\u003e118-degree four facet split point with web thinning for self-centering and reduced drill thrust\u003c\/li\u003e\n  \u003cli\u003eDIN 1897 stub length for increased rigidity and reduced deflection in tight clearance setups\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n  \u003cli\u003eTwo regular spiral flutes with tapered web configuration for efficient chip removal\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance of +0.000 to -0.022mm for consistent hole sizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard production drill bit for use in drill presses, CNC machining centers, and manual lathes accepting a 7.49mm straight-cylindrical shank. Conforms to DIN 1897 stub drill specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with rotary cutting tools. Ensure the machine spindle and chuck are fully stopped and de-energized before inserting or removing the bit. Confirm the shank is fully seated and the chuck is tightened to the machine manufacturer's specification before beginning any drilling operation. Do not exceed the recommended maximum drilling depth of 22.77mm 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: 7.49mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 74.00mm (2.91 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 34.00mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 22.77mm (0.896 inches)\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 Point\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: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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: 7.49mm\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\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\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 -0.022mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.51 inches\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: 9055200074900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51727366095154,"sku":"9055200074900","price":27.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/905a5006a23292a1fffffa23d3b1b98c_910063d1-89df-455b-9f4a-a2b58049c3b1.jpg?v=1788676804","url":"https:\/\/voomisupply.com\/products\/guhring-9055200074900-cobalt-stub-drill-bit-7-49mm","provider":"Voomi Supply","version":"1.0","type":"link"}