{"product_id":"accupro-b120500r-corner-radius-boring-bar-solid-carbide","title":"Accupro B120500R Corner Radius Boring Bar Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO B120500R is a corner radius boring bar machined from submicron-grade solid carbide for precision internal boring operations. Designed for right-hand cutting, this bar produces a controlled corner radius ranging from 0.005 to 0.008 inches at the base of a bore, reducing stress concentrations in finished parts. The 3\/16-inch shank diameter and 2-inch overall length make it suited for small-bore applications where rigidity and dimensional accuracy are critical. A bright finish coating is applied to the flute and shank surfaces. Licensed machinists and CNC tooling technicians typically install and run this bar on lathes, boring mills, and machining centers requiring fine internal geometry control.\u003c\/p\u003e\u003cp\u003eThis boring bar is intended for small-diameter internal turning where a radiused corner is required at the bore floor or step transition. With a minimum bore diameter of 0.12 inches and a maximum bore depth of 0.5 inches, it is well matched to tight-tolerance work in aerospace, medical, and precision mechanical component machining. The submicron carbide grade supports higher cutting speeds and longer tool life compared to standard carbide grades in abrasive or hardened workpiece materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSubmicron solid carbide construction for enhanced wear resistance and edge retention\u003c\/li\u003e\n\u003cli\u003eCorner radius range of 0.005 to 0.008 inches for controlled stress-relief geometry at bore transitions\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction compatible with standard lathe and boring mill spindle rotation\u003c\/li\u003e\n\u003cli\u003eMinimum bore diameter of 0.12 inches suitable for small and micro-bore applications\u003c\/li\u003e\n\u003cli\u003eBright finish coating on shank and cutting surfaces\u003c\/li\u003e\n\u003cli\u003e3\/16-inch shank diameter with 2-inch overall length for compact tool holding setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style precision boring bar for use in tool holders and boring head systems that accept a 3\/16-inch round shank, commonly found on manual lathes, CNC turning centers, and small boring mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully powered down and the tool turret or holder is locked before inserting or removing the boring bar. The bar should be clamped securely in a compatible tool holder with minimal overhang beyond the holder face to reduce chatter and deflection. Confirm corner radius requirements against part print tolerances before beginning the cut, as this bar produces a fixed radius range and cannot be adjusted after grinding.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoring Bar Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.12 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\u003eCorner Radius Range\u003c\/strong\u003e: 0.005 to 0.008 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 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: 0.0625 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: B120500R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51752884175154,"sku":"B120500R","price":58.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1ddbf7f1c3520c51c815808613ff7955.jpg?v=1788930824","url":"https:\/\/voomisupply.com\/products\/accupro-b120500r-corner-radius-boring-bar-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}