Accupro ACC-BB290750 Boring Bar Submicron Solid Carbide

Product Description

The ACCUPRO ACC-BB290750 is a solid carbide boring bar engineered for precision internal boring operations on CNC lathes and manual turning centers. Built from submicron-grade solid carbide with a bright finish, it delivers tight dimensional control and extended tool life in demanding machining environments. The bar accepts a minimum bore diameter of 0.29 inches and reaches a maximum bore depth of 0.75 inches. With a 5/16-inch shank diameter and an overall length of 2.5 inches, this is a compact tooling solution suited for small-bore applications where rigidity and concentricity are critical. Machinists and tool-and-die professionals are the primary users.

This boring bar is used in job shops, production machining cells, and maintenance departments where small internal diameters need to be finished or roughed to close tolerances. Right-hand cutting direction makes it compatible with standard spindle rotation on most conventional and CNC turning equipment. The compact overall length of 2.5 inches minimizes overhang, which reduces chatter and deflection during the cut. It is appropriate for use in steel, aluminum, cast iron, and other machinable materials where submicron carbide grade provides the necessary wear resistance.

Key Features

• Submicron solid carbide construction for wear resistance and dimensional stability
• Minimum bore diameter of 0.29 inches for tight small-bore applications
• Maximum bore depth of 0.75 inches
• Right-hand cutting direction for standard spindle rotation
• Bright finish coating for smooth chip flow and reduced built-up edge
• Compact 2.5-inch overall length minimizes overhang and chatter

Compatibility

Designed as a standard right-hand boring bar for use in turning centers and lathes with toolholders accepting a 5/16-inch round shank.

Installation Notes

Installation is performed by a machinist or tooling technician. Secure the shank firmly in a compatible boring bar holder, ensuring adequate clamping length to minimize deflection. Power down and lock out the machine spindle before changing or adjusting tooling. Follow shop safety procedures and machine manufacturer guidelines when setting tool offsets and depth of cut.