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The ACCUPRO ACC-BB2901000A is a solid carbide boring bar designed for precision internal boring operations on CNC lathes and manual turning centers. Built from micrograin solid carbide with a TiAlN finish coating, this bar delivers the rigidity and wear resistance needed for tight-tolerance bores in ferrous and non-ferrous materials. It features a right-hand cutting direction, a minimum bore diameter of 0.29 inches, a maximum bore depth of 1 inch, a 5/16-inch shank diameter, and an overall length of 2.5 inches. Machinists and tool-and-die professionals rely on this class of tooling for small-diameter internal finishing work where deflection must be minimized.
The ACC-BB2901000A is suited for small-bore internal turning applications in job shops, production machining environments, and maintenance repair operations. The 5/16-inch shank fits standard boring bar holders and quick-change tool posts sized for that shank diameter. Its 1-inch maximum bore depth makes it appropriate for through-holes and blind bores in short-run and production workpieces. The micrograin carbide substrate supports interrupted cuts and harder workpiece materials better than standard-grain carbide grades.
Designed as a standard-shank boring bar for use in tool holders and quick-change systems that accept a 5/16-inch shank diameter on CNC and manual turning centers.
Installation is performed by qualified machinists following standard lathe tooling procedures. Ensure the machine spindle is fully stopped and the machine is powered down or in a safe locked-out state before installing or removing tooling. Secure the shank firmly in the tool holder to the appropriate clamping specification for your holder make and model. Verify boring bar overhang is minimized to reduce deflection and chatter during the cut.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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