{"product_id":"kennametal-1152768-indexable-boring-bar-left-hand-e-stlp","title":"Kennametal 1152768 Indexable Boring Bar Left Hand E-stlp","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1152768 is a left-hand indexable boring bar in the E-STLP toolholder style, designed for internal turning and boring operations on CNC and manual lathes. Built from solid carbide, the bar accepts TP-series inserts secured by a screw-clamp holding method. It carries a minimum bore diameter of 12.19mm (0.480 inches) and an overall length of 152.4mm (6.000 inches). A 3\/8-inch (9.53mm) shank diameter and a -5 degree lead angle define the cutting geometry. Through-coolant capability, via a 0.125-inch coolant hole, supports chip evacuation and tool life in deep-bore applications. This bar is suited for machinists and toolroom technicians working tight-tolerance bores in production or job-shop environments.\u003c\/p\u003e\u003cp\u003eThe 1152768 is applied in precision boring operations where left-hand cutting orientation is required, such as back-boring or specific fixturing setups on turning centers and engine lathes. Its through-coolant channel is particularly useful when machining deep cavities or difficult-to-machine alloys where heat buildup and chip packing are concerns. The neutral rake angle and 0-degree rake provide predictable cutting performance across a range of workpiece materials. A center-to-cutting-edge distance of 0.250 inches supports accurate bore sizing during setup.\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\u003eLeft-hand cutting orientation for back-boring and specialized workholding setups\u003c\/li\u003e\n\u003cli\u003eThrough-coolant design with a 0.125-inch coolant hole for chip flushing and thermal management\u003c\/li\u003e\n\u003cli\u003eScrew-clamp insert holding for secure, repeatable insert indexing\u003c\/li\u003e\n\u003cli\u003eAccepts TP-series inserts with a 1\/4-inch inscribed circle and 3\/32-inch insert thickness\u003c\/li\u003e\n\u003cli\u003e-5 degree lead angle with neutral rake for stable, controlled cutting action\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned to accept TP-series (TP..) indexable inserts with a 1\/4-inch inscribed circle and 3\/32-inch thickness, as specified for the E-STLP toolholder style.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tooling changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out per shop safety procedures. Confirm shank clamping torque meets the machine tool manufacturer specifications for a 3\/8-inch boring bar holder before engaging the cut. Connect the through-coolant supply line to the shank inlet and verify flow before initiating the bore cycle. Insert indexing should follow the insert manufacturer seating procedure to ensure proper depth-of-cut and surface finish results.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 12.19mm (0.480 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 152.4mm (6.000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 9.53mm (3\/8 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: E-STLP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: TP series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: -5 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.250 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 Diameter\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2844 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241601\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: 1152768\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51748113252658,"sku":"1152768","price":623.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/38bfe5092bcee1b75242b3ddb3ae73d6.jpg?v=1788889215","url":"https:\/\/voomisupply.com\/products\/kennametal-1152768-indexable-boring-bar-left-hand-e-stlp","provider":"Voomi Supply","version":"1.0","type":"link"}