{"product_id":"kennametal-7070649-micro-drill-bit-1-60mm-solid-carbide","title":"Kennametal 7070649 Micro Drill Bit 1.60mm Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 7070649 is a solid carbide micro drill bit designed for high-precision drilling in demanding industrial applications. Measuring 1.60 mm (0.0630 inches) in diameter with a 139-degree drill point angle, this bit delivers accurate entry geometry for tight-tolerance holes. A multi-layer TiAlCrN, TiAlCrSiN, and TiSiN coating system provides heat resistance and extended tool life when cutting through hardened steels, stainless, and other difficult materials. The 57.00 mm overall length and 4.00 mm straight-cylindrical shank make it compatible with standard precision toolholders used in CNC machining centers and drill presses. Installation and setup are performed by machinists and toolroom technicians.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for precision drilling in aerospace, medical device, mold and die, and general metalworking operations where small-diameter, high-accuracy holes are required. The Kendrill series is engineered for deep-hole micro drilling, with a 7xD flute-to-diameter ratio supporting a maximum drilling depth of 11.50 mm. Coolant-through capability makes it appropriate for high-speed wet drilling cycles where chip evacuation and thermal management are critical. It is most commonly run in CNC machining centers with through-spindle coolant delivery.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1.60 mm (0.0630 inch) cutting diameter with 139-degree split-point geometry for accurate hole entry\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and tool life in hard and abrasive workpiece materials\u003c\/li\u003e\n  \u003cli\u003eMulti-layer TiAlCrN, TiAlCrSiN, and TiSiN coating for elevated heat resistance and wear reduction\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design supports chip evacuation in deep micro-drilling applications\u003c\/li\u003e\n  \u003cli\u003e7xD flute-to-diameter ratio enables drilling to 11.50 mm maximum depth\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting direction with 2-flute spiral geometry for efficient chip removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers and precision drill presses equipped with standard straight-cylindrical 4.00 mm shank toolholders. Part of the Kendrill series for micro-diameter drilling applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Secure the 4.00 mm straight-cylindrical shank in a properly sized collet or chuck, ensuring full shank engagement to the specified depth before tightening. Verify spindle speed and feed rate settings match the workpiece material before initiating a drilling cycle. Engage coolant-through supply before the spindle contacts the workpiece to prevent thermal damage at the cutting edge.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1.60 mm (0.0630 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 57.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 19.20 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 11.50 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 38.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 139 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 Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 7xD\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\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlCrN, TiAlCrSiN, TiSiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Kendrill\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 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: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7070649\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51743115215154,"sku":"7070649","price":244.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed8aee763ba417e699c16b18af25fd7f.jpg?v=1788842857","url":"https:\/\/voomisupply.com\/products\/kennametal-7070649-micro-drill-bit-1-60mm-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}