{"product_id":"accupro-acc-bb290500-boring-bar-submicron-solid-carbide","title":"Accupro ACC-BB290500 Boring Bar Submicron Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO ACC-BB290500 is a solid carbide boring bar designed for precision internal boring operations on CNC lathes and manual turning centers. Built from submicron-grade carbide with a bright finish, it delivers consistent cutting performance in tight-tolerance bore applications. The right-hand cutting geometry and rigid 5\/16-inch shank provide stable tool engagement with minimal deflection. With a minimum bore diameter of 0.29 inches and a maximum bore depth of 0.50 inches, this bar is suited for small-diameter, shallow-bore work where rigidity and dimensional accuracy are critical. Machinists and toolroom technicians rely on this tool class for finishing passes and close-tolerance sizing cuts.\u003c\/p\u003e\u003cp\u003eThis boring bar is intended for use on small-bore internal diameter turning applications in production and toolroom environments. Its submicron solid carbide construction makes it appropriate for harder workpiece materials where high-speed steel tooling would wear prematurely. Typical applications include bore finishing on hydraulic valve bodies, pneumatic components, and precision machined housings requiring tight roundness and surface finish tolerances. The 2.50-inch overall length keeps the tool compact and suitable for short-reach setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSubmicron solid carbide construction for extended tool life in demanding materials\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction for standard lathe spindle rotation\u003c\/li\u003e\n\u003cli\u003eBright finish coating for smooth chip evacuation and reduced built-up edge\u003c\/li\u003e\n\u003cli\u003e0.29-inch minimum bore diameter enables access to small internal diameters\u003c\/li\u003e\n\u003cli\u003e0.50-inch maximum bore depth suited for shallow through and blind bore finishing\u003c\/li\u003e\n\u003cli\u003e5\/16-inch shank diameter fits standard boring bar holders and quick-change toolposts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or supplemental boring bar for standard 5\/16-inch boring bar holders used on CNC and manual lathes in toolroom and production machining applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the machine in a full stop, spindle off, and controls in a safe state before handling. Secure the shank firmly in the boring bar holder to the holder manufacturer's clamping specifications to prevent tool pull-out under cutting forces. Verify tool overhang is minimized to reduce deflection before taking finishing passes. Always verify bore diameter with calibrated gauging before committing to final depth of cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoring Bar Type\u003c\/strong\u003e: Boring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.29 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Bore Depth\u003c\/strong\u003e: 0.50 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3125 inches (5\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.50 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: 0.125 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ACC-BB290500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51755629740338,"sku":"ACC-BB290500","price":58.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/80e96863c6841f45dee0f7760c6ce2f6.jpg?v=1788957254","url":"https:\/\/voomisupply.com\/products\/accupro-acc-bb290500-boring-bar-submicron-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}