Accupro ACC-BBL2901000 Boring Bar Left Hand Solid Carbide

Product Description

The ACCUPRO ACC-BBL2901000 is a left-hand cut boring bar machined from submicron-grade solid carbide, designed for precision internal bore operations on CNC lathes and manual turning centers. It holds a minimum bore diameter of 0.29 inches and a maximum bore depth of 1 inch, making it well-suited for small, tight-tolerance bores where rigidity and surface finish are critical. The 5/16-inch shank diameter and 2.5-inch overall length give machinists a compact, balanced tool that fits standard boring bar holders without modification. The bright finish coating reduces built-up edge and aids chip evacuation. Installed by machinists and tool-room technicians, this bar is a practical choice wherever submicron carbide grade is required for hard or abrasive workpiece materials.

This boring bar fits applications in precision machining environments including tool-and-die shops, production turning operations, and maintenance machining. Its left-hand cutting direction suits specific spindle rotation setups or back-boring operations where a standard right-hand bar cannot be used. The compact geometry makes it effective for small-diameter internal features in ferrous and non-ferrous workpieces. At 0.125 pounds, the bar is lightweight enough for quick tool changes during high-mix, low-volume runs.

Key Features

• Minimum bore diameter of 0.29 inches for tight, small-diameter bores
• Maximum bore depth of 1 inch suits short to medium internal features
• Submicron solid carbide grade provides superior hardness and wear resistance
• Left-hand cutting direction for back-boring or reverse-spindle setups
• 5/16-inch shank diameter fits standard small-bore tool holders
• Bright finish coating reduces friction and inhibits built-up edge

Compatibility

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

Installation Notes

Installation is performed by qualified machinists or tool-room personnel. Secure the shank firmly in the boring bar holder to the holder manufacturer's recommended clamping procedure before operation. Power down and lock out the machine spindle before setting or changing tooling. Verify cutting direction matches spindle rotation and programmed feed direction before engaging the workpiece.