Accupro ACC-BBL290900 Boring Bar Submicron Solid Carbide

Product Description

The ACCUPRO ACC-BBL290900 is a solid carbide boring bar designed for internal diameter boring operations on CNC lathes and turning centers. Built from submicron-grade carbide with a bright finish, it delivers consistent cutting performance in tight-tolerance bores. The left-hand cutting direction suits specific toolholder orientations and back-boring setups. With a minimum bore diameter of 0.29 inches and a maximum bore depth of 0.9 inches, this bar is well suited to small-diameter, shallow-bore applications where rigidity and dimensional accuracy are critical. Machinists and tool-and-die professionals working in production or job-shop environments rely on solid carbide construction for its vibration resistance and edge retention.

This boring bar fits applications requiring precise internal finishing or roughing in small bores. The 5/16-inch shank diameter and 2.5-inch overall length make it compatible with standard boring bar toolholders used on manual lathes and CNC turning centers in light to medium-duty cutting conditions. It is appropriate for machining ferrous and non-ferrous materials where a left-hand cut geometry is specified by the setup. No specific compatible machine models are listed by the manufacturer for this part.

Key Features

• Submicron solid carbide construction for high rigidity and extended tool life
• Left-hand cutting direction for back-boring and specific toolholder orientations
• Minimum bore diameter of 0.29 inches suits small internal diameter work
• Maximum bore depth of 0.9 inches
• Bright finish coating with no additional surface treatment buildup
• Compact 2.5-inch overall length for use in confined setups

Compatibility

Designed as a standard-shank replacement or tooling addition for lathes and turning centers that accept 5/16-inch shank boring bars with left-hand cut geometry.

Installation Notes

Installation is performed by machinists or tooling technicians. Power down and lock out the machine spindle before securing the bar in the toolholder. Ensure the shank is clamped to the recommended engagement depth per the toolholder manufacturer's specification. Verify correct cutting direction orientation before initiating any cut to avoid tool damage or workpiece scrap.