Accupro ACC-BBL2901350 Boring Bar Submicron Solid Carbide

Product Description

The ACCUPRO ACC-BBL2901350 is a left-hand cut boring bar ground from submicron-grade solid carbide. It is designed for internal boring operations on CNC lathes and manual turning centers where tight tolerances and clean surface finishes are required. With a minimum bore diameter of 0.29 inches and a maximum bore depth of 1.35 inches, this bar suits small-diameter bore work where rigidity and edge retention are critical. The 5/16-inch shank diameter and 2.5-inch overall length make it a compact, high-stiffness tool suited for production and toolroom environments alike. A bright finish coating is applied, indicating no additional surface treatment that could affect critical dimensions.

This boring bar is used in metalworking and machining applications where left-hand cutting geometry is required, such as back-boring operations or setups where the tool feeds in the opposite direction from a conventional right-hand bar. It fits small-bore applications in ferrous and non-ferrous materials. Machinists and CNC operators in job shops, production facilities, and toolrooms are the primary users. The compact overall length supports use in confined bore entries and close-tolerance applications where chatter control and dimensional accuracy are priorities.

Key Features

• Submicron solid carbide construction for high edge retention and dimensional stability
• Left-hand cutting direction for back-boring and reverse-feed setups
• Minimum bore diameter of 0.29 inches for small-diameter internal work
• Maximum bore depth of 1.35 inches
• 5/16-inch shank diameter for standard boring bar holders and tool blocks
• Bright finish coating preserves critical shank and cutting dimensions

Compatibility

Designed as an OEM-style replacement and standard fit for boring bar holders accepting a 5/16-inch round shank in CNC lathes and manual turning centers.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before seating or removing the boring bar from the tool holder. Ensure the shank is clamped with adequate contact length in the holder to minimize overhang and reduce chatter. Verify cutting direction and tool orientation match the programmed feed direction before initiating a cut.