Accupro ACC-BB2901000G Boring Bar 0.29 in Min Bore Tin Carbide

Product Description

The ACCUPRO ACC-BB2901000G is a solid carbide boring bar designed for precision internal boring operations on CNC lathes, turning centers, and manual boring setups. Manufactured from micrograin solid carbide, this right-hand cut bar delivers tight tolerances and consistent surface finish in small-diameter bores. A titanium nitride (TiN) finish coating improves wear resistance and extends tool life in ferrous and non-ferrous materials. With a minimum bore diameter of 0.29 inches and a maximum bore depth of 1 inch, it is suited for short, small-bore finish and semi-finish passes where rigidity and accuracy are critical.

This boring bar is intended for use in production machining environments, toolrooms, and job shops. It suits applications in aerospace, automotive, and general metalworking where close-tolerance bores are required in steel, cast iron, aluminum, and similar materials. The 5/16-inch shank diameter fits standard boring bar holders and quick-change tooling systems common in light-duty turning and machining centers. It is installed and used by machinists and CNC operators working to precise dimensional requirements.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance in small-bore applications
• TiN finish coating reduces friction and extends cutting edge life
• Right-hand cutting direction for standard lathe and turning center setups
• 0.29 inch minimum bore diameter enables access to tight internal diameters
• 1 inch maximum bore depth suited for short-reach precision passes
• 5/16 inch shank diameter fits standard boring bar holders and quick-change systems

Compatibility

Designed as an OEM-style replacement and standard tooling option for boring bar holders accepting a 5/16 inch shank diameter in CNC and manual turning applications.

Installation Notes

Installation is performed by machinists and CNC operators. Ensure the machine spindle is fully stopped and locked out before mounting or removing the boring bar. Secure the shank firmly in the tool holder to the holder manufacturer's recommended clamping procedure to prevent chatter and deflection. Verify bore diameter and depth settings with a test pass before committing to final dimensions.