{"product_id":"hertel-7000018-indexable-boring-bar-left-hand-a-mdun","title":"Hertel 7000018 Indexable Boring Bar Left Hand A-mdun","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 7000018 is a left-hand indexable boring bar designed for precision internal turning and boring operations on CNC lathes and manual boring machines. Built to the A-MDUN toolholder style, it accepts DN.. series inserts held by screw or clamp and applies a negative rake geometry with a 5-degree rake angle and a -3-degree lead angle. The 1-1\/4-inch shank diameter and 14-inch overall length make this bar suited for deep-reach applications where rigidity and coolant delivery are critical. Through-coolant capability with a 1\/4-18 NPT coolant hole thread keeps the cutting zone clear of chips during extended boring passes. This bar is installed by machinists and toolroom technicians in metalworking production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis boring bar is used in applications requiring a minimum bore diameter of 1.705 inches. The left-hand configuration positions the cutting edge for specific spindle rotation and approach directions common in certain turret or back-turning setups. The back-of-bar to cutting edge and center-to-cutting edge measurements are both 1.000 inch, supporting precise offset calculations during setup. It is suited to steel, cast iron, and similar materials where a negative-rake, DN.. insert geometry is the preferred choice for finish or semi-finish boring cuts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMinimum bore diameter of 1.705 inches for deep internal boring reach\u003c\/li\u003e\n\u003cli\u003eLeft-hand holder orientation for compatible spindle and turret configurations\u003c\/li\u003e\n\u003cli\u003eThrough-coolant design with 1\/4-18 NPT coolant port for chip evacuation and heat control\u003c\/li\u003e\n\u003cli\u003eAccepts DN.. series inserts with 1\/2-inch inscribed circle and 3\/16-inch thickness\u003c\/li\u003e\n\u003cli\u003eNegative rake geometry at 5-degree rake angle and -3-degree lead angle for controlled cutting action\u003c\/li\u003e\n\u003cli\u003eScrew or clamp insert holding method for secure, repeatable insert seating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with DN.. series indexable inserts with a 1\/2-inch inscribed circle and 3\/16-inch thickness in A-MDUN style toolholding systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall and service this boring bar only when the machine spindle is fully stopped and the machine is locked out per applicable safety procedures. Verify insert seating and clamp torque according to the insert manufacturer specifications before beginning a cut. Confirm coolant line connection to the 1\/4-18 NPT port is leak-free before running through-coolant. Proper shank clamping length in the turret or tool block should follow the machine tool builder guidelines to maintain rigidity during the boring operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 1.705 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 14 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: A-MDUN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: DN..\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw or Clamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Negative\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 5 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: -3 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 1.000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 1.000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Hole Thread Size\u003c\/strong\u003e: 1\/4-18 NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.5 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7000018\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51749702598962,"sku":"7000018","price":777.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0292522635261444313698cbef962ab0.jpg?v=1788909392","url":"https:\/\/voomisupply.com\/products\/hertel-7000018-indexable-boring-bar-left-hand-a-mdun","provider":"Voomi Supply","version":"1.0","type":"link"}