{"product_id":"scientific-cutting-tools-bb153-radial-relief-boring-bar","title":"Scientific Cutting Tools BB153 Radial Relief Boring Bar","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS BB153 is a radial relief boring bar designed for precision internal diameter machining in small-bore applications. Manufactured from submicron solid carbide in an uncoated finish, it delivers the rigidity and edge retention required for tight-tolerance work. The bar features a right-hand cutting direction, a minimum bore diameter of 0.155 inches, and a maximum bore depth of 0.375 inches. With a 3\/16-inch shank diameter and an overall length of 2 inches, it is sized for use in CNC lathes, manual lathes, and small boring setups where compact tooling is essential. Machinists and tool-and-die professionals are the primary users.\u003c\/p\u003e\u003cp\u003eThis boring bar is suited for small-bore finish and semi-finish turning operations in both production and job-shop environments. Its radial relief geometry reduces rubbing and improves chip clearance in confined bore profiles. The submicron carbide grade handles ferrous and non-ferrous workpieces where consistent surface finish and dimensional accuracy are required. Its compact overall length and small shank diameter make it appropriate for Swiss-style machines, turret lathes, and small CNC turning centers running internal diameter operations at shallow depths.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRadial relief geometry improves chip clearance and reduces tool pressure in small bores\u003c\/li\u003e\n\u003cli\u003eSubmicron solid carbide construction provides high edge retention and rigidity\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction for standard internal turning setups\u003c\/li\u003e\n\u003cli\u003eMinimum bore diameter of 0.155 inches suits tight, small-bore applications\u003c\/li\u003e\n\u003cli\u003eUncoated finish maintains sharp edge geometry for precision finishing cuts\u003c\/li\u003e\n\u003cli\u003eCompact 2-inch overall length fits confined tooling envelopes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for small-bore internal turning applications on CNC and manual lathes accepting a 3\/16-inch shank boring bar.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before securing the boring bar in the tool holder. Ensure the shank is clamped with adequate contact length to minimize overhang deflection. Follow the machine manufacturer's guidelines and applicable shop safety procedures when setting tool height and runout.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoring Bar Type\u003c\/strong\u003e: Radial Relief\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: 0.155 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Bore Depth\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1875 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: Uncoated\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: SCIENTIFIC CUTTING TOOLS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: BB153\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":52070640386354,"sku":"BB153","price":39.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/82ea10f6468af9486e7eb781a1339279.jpg?v=1790048611","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-bb153-radial-relief-boring-bar","provider":"Voomi Supply","version":"1.0","type":"link"}