Accupro ACC-BB290500A Boring Bar 0.29 in Min Bore Solid Carbide

Product Description

The ACCUPRO ACC-BB290500A is a solid carbide boring bar designed for precision internal boring operations on CNC lathes and manual turning centers. Built from micrograin solid carbide stock and finished with a TiAlN coating, it delivers consistent tool life and dimensional accuracy in demanding cutting environments. The bar handles a minimum bore diameter of 0.29 inches and a maximum bore depth of 0.50 inches, making it well suited for small, shallow bores where rigidity and edge retention are critical. The 5/16-inch shank diameter and 2.50-inch overall length keep the setup compact and reduce overhang-related deflection.

This boring bar is intended for right-hand cut operations on ferrous and non-ferrous workpieces in production and job-shop environments. Machinists and toolroom technicians use it for finish boring operations where tight tolerances and smooth surface finish are required. The TiAlN coating supports dry or semi-dry cutting and extends tool life in higher-temperature cutting conditions. It fits standard boring bar holders and tool blocks that accept a 5/16-inch round shank, making it straightforward to integrate into existing setups.

Key Features

• Micrograin solid carbide construction for high rigidity and edge sharpness in small-diameter bores
• TiAlN finish coating for extended tool life and heat resistance during high-speed cutting
• Right-hand cut orientation for standard CNC lathe and manual turning center applications
• 0.29-inch minimum bore diameter suits tight, small-bore finish operations
• 0.50-inch maximum bore depth keeps the bar in its optimal rigidity range, reducing deflection
• 5/16-inch shank diameter fits standard round-shank boring bar holders

Compatibility

Designed for use in standard boring bar holders and tool blocks accepting a 5/16-inch round shank on CNC turning centers and manual lathes requiring right-hand internal boring capability.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the machine is in a safe state before mounting or removing tooling. Secure the shank firmly in the boring bar holder to the full recommended engagement depth to minimize overhang and vibration. Inspect the cutting edge and TiAlN coating for chips or wear before each use and replace the bar if edge integrity is compromised.