Accupro ACC-BBL2901100 Boring Bar Left Hand Solid Carbide

Product Description

The ACCUPRO ACC-BBL2901100 is a left-hand cut boring bar manufactured from submicron-grade solid carbide. It is designed for precision internal boring operations on CNC lathes, manual lathes, and boring mills. The minimum bore diameter is 0.29 inches, with a maximum bore depth of 1.1 inches. The shank diameter measures 5/16 inches and the overall length is 2.5 inches. A bright finish coating reduces friction and helps maintain dimensional accuracy during cutting. This tool is suited for machinists and tool-and-die professionals working to tight tolerances on small-diameter bores in steel, cast iron, aluminum, and similar materials.

This boring bar is intended for small-bore internal finishing and semi-finishing applications in both job-shop and production environments. Its submicron carbide grade provides the hardness and edge retention needed for consistent performance on ferrous and non-ferrous workpieces. The left-hand cutting direction makes it appropriate for specific spindle orientations or back-boring operations where a standard right-hand tool cannot be used. Machinists requiring precise bore geometry on small components will find this bar a direct-fit solution.

Key Features

• Submicron solid carbide construction for superior hardness and edge retention
• Left-hand cutting direction for back-boring or reverse-spindle applications
• Minimum bore diameter of 0.29 inches for small-bore precision work
• Maximum bore depth of 1.1 inches
• Bright finish coating reduces built-up edge and friction
• Compact 2.5-inch overall length for use in tight setups

Compatibility

Designed as an OEM-style replacement or direct tooling addition for lathes and boring mills accepting a 5/16-inch round shank boring bar.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's setup procedures. Secure the shank firmly in the tool holder to the specified clamping torque listed in the machine documentation, ensuring minimal overhang to reduce vibration. Confirm spindle direction matches the left-hand cutting orientation before engaging the workpiece. Always power down and lock out the machine before changing tooling.