{"product_id":"kennametal-3331090-indexable-boring-bar-0-44-in-right-hand","title":"Kennametal 3331090 Indexable Boring Bar 0.44 in Right Hand","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 3331090 is a heavy metal indexable boring bar designed for precision internal turning operations on CNC lathes and boring machines. Built to the L-MNE toolholder style under the Top Notch series, it features a right-hand cut orientation and accepts N.1L inserts secured by a clamp-style holding method. The shank diameter is 5\/16 inches, minimum bore diameter is 0.44 inches, and overall length (OAL) is 6 inches. The center-to-cutting-edge dimension is 0.258 inches. Heavy metal construction provides high mass and vibration damping in small-bore applications where chatter control is critical.\u003c\/p\u003e\u003cp\u003eThis boring bar is suited for small-diameter internal boring work on production or job-shop turning centers. It is typically used in applications requiring tight tolerances in short-reach bores where rigidity and insert stability are priorities. The coolant-through design, with a 0.094-inch coolant hole diameter, supports directed coolant delivery to the cutting zone, extending insert life and improving chip evacuation in ferrous and non-ferrous materials. Machinists and tooling technicians working with Swiss-style or conventional CNC lathes will find this bar applicable to a range of finish and semi-finish boring passes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop Notch series L-MNE toolholder style for rigid, repeatable insert seating\u003c\/li\u003e\n\u003cli\u003eClamp-style insert holding method compatible with N.1L inserts\u003c\/li\u003e\n\u003cli\u003eCoolant-through design with 0.094-inch coolant hole for directed chip and heat management\u003c\/li\u003e\n\u003cli\u003eHeavy metal shank construction for enhanced vibration damping in small-bore work\u003c\/li\u003e\n\u003cli\u003eRight-hand cut orientation for standard lathe setup\u003c\/li\u003e\n\u003cli\u003eCenter-to-cutting-edge of 0.258 inches for precise bore geometry control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with N.1L series inserts in KENNAMETAL Top Notch tooling systems. Insert clamping is mechanical clamp-style; no additional adapter is required for standard N.1L insert profiles.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power isolated per shop lockout\/tagout procedures. Ensure the shank is clamped securely in a compatible boring bar holder sized for a 5\/16-inch shank before operation. Coolant-through connections should be verified for proper sealing before running the coolant system. Follow the insert manufacturer torque and seating guidelines when indexing or replacing N.1L inserts.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: L-MNE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.44 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.258 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: N.1L\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: 0.094 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Material\u003c\/strong\u003e: Heavy Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.23 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: 3331090\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51737544884530,"sku":"3331090","price":376.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c6e9eece22f0c015308acb51e651e42e.jpg?v=1788790153","url":"https:\/\/voomisupply.com\/products\/kennametal-3331090-indexable-boring-bar-0-44-in-right-hand","provider":"Voomi Supply","version":"1.0","type":"link"}