{"product_id":"guhring-9055240057900-cobalt-stub-drill-bit-size-1","title":"Guhring 9055240057900 Cobalt Stub Drill Bit Size 1","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9055240057900 is a cobalt screw machine length (stub) drill bit in wire gauge Size 1, equivalent to 0.2280 inches in diameter. Built to DIN 1897 standards from M35 cobalt steel, it features a 118-degree four facet split point and a web-thinned, tapered web configuration that reduces entry force and improves chip evacuation. The straight-cylindrical shank measures 5.79 mm (0.2280 inches) in diameter and the overall length is 66 mm (2.5984 inches). Right-hand spiral flutes and a bright uncoated finish make this bit well-suited for production drilling applications where rigidity and accurate hole entry matter.\u003c\/p\u003e\u003cp\u003eThis stub-length drill bit is designed for screw machine and short-hole drilling work where reduced length improves rigidity and minimizes deflection. It is a common choice for metalworking operations in aluminum and similar non-ferrous materials. The 3xD flute-to-diameter ratio keeps the bit compact for close-tolerance work in CNC lathes, turret lathes, and automatic screw machines. Maximum drilling depth is 19.32 mm (0.7610 inches). Machinists, tool-and-die shops, and precision manufacturing operations typically stock this series for high-cycle production runs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM35 cobalt steel construction for heat resistance during high-speed drilling\u003c\/li\u003e\n\u003cli\u003e118-degree four facet split point with web thinning for reduced thrust and self-centering entry\u003c\/li\u003e\n\u003cli\u003eDIN 1897 stub length for maximum rigidity and minimal deflection\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute, regular helix for efficient chip removal in aluminum and non-ferrous metals\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish — compatible with cutting fluids and standard machining lubricants\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks and collets without modification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct stock drill bit for screw machines, CNC turning centers, and turret lathes that accept straight-shank tooling in the 0.2280-inch diameter range conforming to DIN 1897 stub-length specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist following applicable shop safety procedures. Ensure the machine spindle is fully stopped and the chuck or collet is properly cleaned before seating the shank. Verify runout after chucking to avoid premature bit wear or oversized holes. Do not exceed the rated maximum drilling depth of 0.7610 inches per pass without retracting to clear chips.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2280 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 66 mm (2.5984 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 28 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 19.32 mm (0.7610 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5.79 mm (0.2280 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 38 mm (1.4961 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt (M35)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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 Helix\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 Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.000 to -0.018 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 5524\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.022 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: 9055240057900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51735053271346,"sku":"9055240057900","price":17.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e72341f1067e885a78170716b4f536e9_6c69cb1d-95f1-4b3b-85ab-5cf90e8606ce.jpg?v=1788769705","url":"https:\/\/voomisupply.com\/products\/guhring-9055240057900-cobalt-stub-drill-bit-size-1","provider":"Voomi Supply","version":"1.0","type":"link"}