{"product_id":"accupro-acc-bbl4902750-boring-bar-submicron-solid-carbide","title":"Accupro ACC-BBL4902750 Boring Bar Submicron Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO ACC-BBL4902750 is a left-hand cut boring bar machined from submicron-grade solid carbide with a bright finish coating. It is designed for precision internal boring operations on CNC lathes, manual lathes, and boring mills. The bar accepts a minimum bore diameter of 0.49 inches and reaches a maximum bore depth of 2.75 inches, making it well suited for moderate-depth finish and semi-finish boring work. The 1\/2-inch shank diameter and 4-inch overall length fit standard toolholders commonly found in production and job-shop environments. Machinists and CNC operators install and qualify this tooling.\u003c\/p\u003e\n\u003cp\u003eThis boring bar is applied in ferrous and non-ferrous material machining where dimensional accuracy and surface finish consistency are required. Left-hand cut geometry suits specific spindle rotation setups and back-boring applications where a right-hand bar cannot engage the workpiece correctly. The submicron carbide substrate provides wear resistance suited to continuous cutting passes at tighter tolerances. It is appropriate for use in both production and prototype machining contexts where repeatable bore geometry is critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSubmicron-grade solid carbide substrate for extended tool life and dimensional consistency\u003c\/li\u003e\n  \u003cli\u003eLeft-hand cutting direction for back-boring and reverse-spindle applications\u003c\/li\u003e\n  \u003cli\u003eMinimum bore diameter of 0.49 inches enables access to small-bore workpieces\u003c\/li\u003e\n  \u003cli\u003eMaximum bore depth of 2.75 inches (2-3\/4 inches) for moderate-depth internal features\u003c\/li\u003e\n  \u003cli\u003eBright finish coating — no added coating buildup that would affect shank fitment tolerances\u003c\/li\u003e\n  \u003cli\u003e1\/2-inch shank diameter fits standard boring bar toolholders and quick-change systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a replacement or addition to standard boring bar sets for lathes and boring mills accepting a 1\/2-inch shank diameter toolholder.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tooling is installed by machinists and CNC setup technicians. Power down and lock out the machine spindle before changing or adjusting boring bar toolholders. Secure the shank fully within the toolholder to the manufacturer-specified engagement depth and confirm runout with a dial indicator before cutting. Verify that left-hand cutting geometry matches the intended spindle rotation direction before initiating a bore pass.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoring Bar Type\u003c\/strong\u003e: Boring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.49 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Bore Depth\u003c\/strong\u003e: 2.75 inches (2-3\/4 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches (1\/2 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Submicron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Bright\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.40625 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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ACC-BBL4902750\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730422137138,"sku":"ACC-BBL4902750","price":110.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b81aa0dfcedf9e0bdb7f18758bfc5747.jpg?v=1788717171","url":"https:\/\/voomisupply.com\/products\/accupro-acc-bbl4902750-boring-bar-submicron-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}