{"product_id":"accupro-acc-bb290500g-boring-bar-0-29-in-solid-carbide-tin","title":"Accupro ACC-BB290500G Boring Bar 0.29 in Solid Carbide Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO ACC-BB290500G is a right-hand cut boring bar machined from micrograin solid carbide and finished with a TiN coating. It is designed for internal boring operations on CNC lathes, manual lathes, and boring heads where precision and rigidity are critical. The bar handles a minimum bore diameter of 0.29 inches and a maximum bore depth of 0.5 inches. With a 5\/16-inch shank diameter and an overall length of 2.5 inches, this compact bar is suited for small-bore applications that demand tight tolerances and clean surface finishes. Machinists and toolroom professionals install this bar in standard boring bar holders as a direct working tool.\u003c\/p\u003e\n\u003cp\u003eThis boring bar is well suited for small-diameter internal turning and finishing passes in ferrous and non-ferrous materials. The micrograin carbide substrate supports the rigidity needed for precision boring in tight bores where chatter and deflection must be minimized. Its compact overall length makes it a practical choice for short-reach setups on production lathes and manual toolroom machines. The TiN finish coating adds surface hardness and reduces friction at the cutting edge, supporting longer tool life in general-purpose boring applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMinimum bore diameter of 0.29 inches for small-bore internal operations\u003c\/li\u003e\n  \u003cli\u003eMaximum bore depth of 0.5 inches suits shallow-bore and finish-boring work\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eTiN finish coating increases edge hardness and reduces friction\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting direction for standard lathe setup\u003c\/li\u003e\n  \u003cli\u003e5\/16-inch shank diameter fits common boring bar holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct toolroom selection for standard 5\/16-inch boring bar holders used in small-bore internal turning applications on CNC and manual lathes.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis boring bar is installed and set up by machinists familiar with lathe tooling and boring bar holders. Always power down and lock out the machine before mounting or removing tooling. Secure the shank fully within the holder to the minimum recommended engagement length to reduce overhang and the risk of deflection or chatter. Confirm cutting direction and tool height before initiating a cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\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: 0.5 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: 2.5 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: Micrograin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.125 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-BB290500G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51974143803698,"sku":"ACC-BB290500G","price":70.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/591581ca73cd18679949a4487607b102.jpg?v=1789976036","url":"https:\/\/voomisupply.com\/products\/accupro-acc-bb290500g-boring-bar-0-29-in-solid-carbide-tin","provider":"Voomi Supply","version":"1.0","type":"link"}