{"product_id":"guhring-9085210120000-carbide-jobber-drill-bit-12-mm","title":"Guhring 9085210120000 Carbide Jobber Drill Bit 12 Mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9085210120000 is a solid carbide jobber-length drill bit engineered for high-performance drilling in demanding materials. Built to Series 8521 specifications, it carries a 140-degree split point with an HF point geometry and a nano-SI coating for extended tool life. The 12 mm diameter bit features a straight-cylindrical shank, right-hand spiral flutes, and coolant-through capability, making it a precision instrument for production machining environments. The web-thinned tip promotes self-centering entry, reducing the need for a pilot hole and improving hole position accuracy on hard-to-drill substrates. It is typically installed and operated by machinists and CNC tooling specialists working with aerospace and structural alloys.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for titanium alloy as its primary workpiece material, with a workpiece material classification of P and S grades. The 5xD flute-to-diameter ratio and 53 mm maximum drilling depth make it well suited for through-holes and moderate-depth blind holes in production or job-shop settings. The 118 mm overall length with a 71 mm flute length and 45 mm shank length provides rigid tool engagement in standard drill chucks and collet-style toolholders. It conforms to DIN 6535 and DIN 6537 L standards, confirming dimensional interchangeability with other DIN-compliant toolholders.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction with nano-SI coating for heat and wear resistance in titanium and hard alloys\u003c\/li\u003e\n  \u003cli\u003e140-degree HF point geometry with web thinning for self-centering entry and reduced thrust force\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design supports internal coolant delivery to the cutting zone\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute with regular helix for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank conforms to DIN 6535 and DIN 6537 L for broad toolholder compatibility\u003c\/li\u003e\n  \u003cli\u003e5xD flute ratio provides rigidity for consistent hole quality at depths up to 53 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in DIN 6535 and DIN 6537 L compliant toolholders with a 12 mm bore. Rated for primary workpiece materials classified as titanium alloy under P and S material groups per DIN designation standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit should be installed by a qualified machinist familiar with carbide tooling requirements. Ensure the machine spindle and toolholder are fully stopped and de-energized before loading the bit. Carbide tooling is brittle and should never be used in a worn or improperly balanced holder, as lateral shock loads can cause chipping or fracture. When running coolant-through operation, verify that the machine's internal coolant system pressure and flow rate are appropriate for the tool diameter before engaging the spindle.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 12 mm (0.4724 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 118 mm (4.646 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 71 mm (2.795 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 53 mm (2.087 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 12 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 45 mm (1.772 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\u003ePoint Type\u003c\/strong\u003e: HF\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: nano-SI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Self-Centering\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: m7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 8521\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: DIN 6535, DIN 6537 L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification Designation\u003c\/strong\u003e: DIN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.138 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: 9085210120000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51732809744690,"sku":"9085210120000","price":507.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/204da00ca3732dde5c08d450c731edbe.jpg?v=1788747073","url":"https:\/\/voomisupply.com\/products\/guhring-9085210120000-carbide-jobber-drill-bit-12-mm","provider":"Voomi Supply","version":"1.0","type":"link"}