{"product_id":"kennametal-1152689-indexable-boring-bar-left-hand-solid-carbide","title":"Kennametal 1152689 Indexable Boring Bar Left Hand Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1152689 is a solid carbide indexable boring bar designed for internal turning and boring operations on CNC lathes and machining centers. Part of the Top Notch series, it accepts N-style inserts held by a clamp-style insert holding method. The bar features a left-hand cut orientation, a 0.5-inch shank diameter, and an overall length of 8 inches. A built-in coolant-through capability with a 0.19-inch coolant hole diameter supports chip evacuation and tool life in demanding cutting conditions. Licensed machinists and CNC operators use this bar for precision bore finishing and roughing in tight-tolerance applications.\u003c\/p\u003e\u003cp\u003eThis boring bar is suited for shops running internal diameter operations where a minimum bore diameter of 0.73 inches is required. The E-NE toolholder style and 3-degree lead angle make it appropriate for general-purpose boring on ferrous and non-ferrous materials. The center-to-cutting-edge dimension of 0.437 inches provides the clearance geometry needed for consistent insert positioning. It is used in production machining environments as well as job shops handling repair and custom work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and vibration resistance in small-bore applications\u003c\/li\u003e\n\u003cli\u003eCoolant-through design with 0.19-inch coolant hole diameter for improved chip control and tool life\u003c\/li\u003e\n\u003cli\u003eLeft-hand cut orientation for specific machine setups and reverse-rotation operations\u003c\/li\u003e\n\u003cli\u003eClamp-style insert holding method for secure N-style insert retention\u003c\/li\u003e\n\u003cli\u003eTop Notch series toolholder style E-NE with 3-degree lead angle\u003c\/li\u003e\n\u003cli\u003eCenter-to-cutting-edge dimension of 0.437 inches for precise insert positioning\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with N-style indexable inserts as specified by the Top Notch series toolholder system. Designed for use in standard CNC lathe and boring applications requiring a minimum bore diameter of 0.73 inches and a 0.5-inch shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and all power is locked out before mounting or changing the boring bar or insert. Secure the shank in a properly sized tool block or turret pocket to the machine manufacturer torque specifications. Verify insert seating and clamp engagement before initiating a cutting cycle.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: E-NE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.73 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.437 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 3 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: N. style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Hole Diameter\u003c\/strong\u003e: 0.19 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.68 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1152689\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51738295206194,"sku":"1152689","price":1061.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/233251dacf23a6d14b2a94c09b6bffec.jpg?v=1788797869","url":"https:\/\/voomisupply.com\/products\/kennametal-1152689-indexable-boring-bar-left-hand-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}