Accupro ACC-BB2901250 Boring Bar Right Hand Carbide

Product Description

The ACCUPRO ACC-BB2901250 is a solid carbide boring bar designed for precision internal boring operations on CNC and manual lathes. Built from submicron-grade carbide with a bright finish coating, it delivers consistent cutting performance in tight-tolerance bores. The bar handles a minimum bore diameter of 0.29 inches and reaches a maximum bore depth of 1.25 inches, making it well suited for shallow to mid-depth internal finishing passes. With a 5/16-inch shank diameter and an overall length of 2.5 inches, the compact form factor fits standard boring bar holders commonly found in production and job shop environments. Right-hand cutting geometry keeps chip evacuation predictable on conventional lathe setups.

This boring bar is intended for machinists and toolmakers performing internal diameter work on metals and similar machinable materials. Its submicron carbide construction handles interrupted cuts and abrasive workpiece materials better than standard-grade carbide. The bright finish reduces built-up edge in non-ferrous applications. Typical use cases include finish boring, sizing pre-drilled holes, and refining cast or turned internal features to close tolerances. The compact 2.5-inch OAL suits bench-top and small-format CNC turning centers where clearance is limited.

Key Features

• Submicron solid carbide construction for extended tool life in demanding cuts
• Minimum bore diameter of 0.29 inches enables work in small internal features
• Maximum bore depth of 1.25 inches suits shallow to mid-depth boring applications
• Right-hand cutting direction compatible with standard lathe spindle rotation
• Bright finish coating reduces built-up edge in non-ferrous and soft material applications
• 5/16-inch shank diameter fits commonly available boring bar holders and quick-change tooling

Compatibility

Designed as an OEM-style replacement and standard tooling option for boring bar holders accepting a 5/16-inch round shank in right-hand orientation on manual and CNC turning equipment.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine powered down and the spindle fully stopped. Secure the shank firmly in the boring bar holder to the full recommended clamp engagement depth to minimize overhang-induced vibration. Verify bore depth clearance before initiating a cut to prevent tool-to-workpiece interference. Follow applicable shop safety procedures and machine manufacturer guidelines when setting cutting parameters.