{"product_id":"sumitomo-u101277-extra-length-drill-bit-0-1719-in-solid-carbide","title":"Sumitomo U101277 Extra Length Drill Bit 0.1719 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U101277 is a solid carbide extra length drill bit engineered for deep hole drilling applications in demanding metalworking environments. With a diameter of 0.1719 inches and an overall length of 4.607 inches, this bit is built for reaching depth without sacrificing rigidity. The 140-degree split point reduces thrust and improves self-centering on entry. DEX coating provides enhanced wear resistance and heat dissipation during high-cycle operations. The straight-cylindrical shank and tapered web configuration contribute to stable cutting geometry and chip evacuation. This is a production-grade tooling component installed by machinists and tool-and-die professionals.\u003c\/p\u003e\u003cp\u003eThe U101277 is designed for deep hole drilling into ductile iron and hardened steel at a flute-by-diameter ratio of 12xD. The 2.52-inch flute length handles a maximum drilling depth of 2.638 inches, making it well suited for through-hole and blind-hole work on CNC machining centers and drill presses where coolant-through capability is utilized. It fits applications where tight diameter tolerance control is critical, with a drill bit diameter tolerance of -0.00080 to -0.00145 inches.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for extended tool life in ferrous materials\u003c\/li\u003e\n\u003cli\u003eDEX coating reduces friction and extends wear resistance in high-cycle drilling\u003c\/li\u003e\n\u003cli\u003e140-degree drill point angle improves self-centering and reduces entry thrust\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports chip flushing in deep hole operations\u003c\/li\u003e\n\u003cli\u003eTapered web configuration promotes efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003e12xD flute-to-diameter ratio enables deep reach in a compact shank\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers and drill presses accepting a 0.2360-inch straight-cylindrical shank, targeting deep hole drilling operations in ductile iron and hardened steel workpieces per MDW-XHV series specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by qualified machinists following standard machine lockout and spindle-stop procedures before handling. Confirm shank diameter and collet or chuck specifications match before seating the bit. Coolant-through setups should be verified for adequate pressure and flow before running at production feed and speed rates. Avoid side loading or using the bit as a reamer, as solid carbide is brittle under lateral force.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.1719 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 4.607 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.52 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2360 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.969 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.638 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 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 by Diameter Ratio\u003c\/strong\u003e: 12xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.00080 to -0.00145 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: DEX\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Ductile Iron, Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Deep Hole Drilling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MDW-XHV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241637\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SUMITOMO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: U101277\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":67909270077746,"sku":"U101277","price":397.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1840fbce8bc58119ba1a493e4c44fc6b_f085ae45-8ff6-4242-9a16-8a0e13132f78.jpg?v=1791185916","url":"https:\/\/voomisupply.com\/products\/sumitomo-u101277-extra-length-drill-bit-0-1719-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}