Accupro ACC-BBL120800 Boring Bar Left Hand Carbide

Product Description

The ACCUPRO ACC-BBL120800 is a solid carbide boring bar designed for precision internal boring operations on CNC lathes and manual turning centers. Built from submicron-grade carbide with a bright finish coating, it delivers consistent cutting performance in small-diameter bore applications. The bar features a left-hand cutting direction, a minimum bore diameter of 0.12 inches, a maximum bore depth of 0.8 inches, a 3/16-inch shank diameter, and an overall length of 2 inches. It is suited for machinists and toolroom technicians working with tight tolerances in small-bore finishing and semi-finishing passes.

This boring bar is used in precision turning applications where small internal diameters must be held to close tolerances. Its submicron carbide construction makes it appropriate for harder workpiece materials and high-speed finishing cuts. Typical applications include bore sizing on small hydraulic fittings, valve bodies, small-diameter sleeves, and similar components. The left-hand cut configuration suits specific toolholder orientations and spindle-direction setups where a right-hand bar is not practical.

Key Features

• Submicron solid carbide construction for wear resistance and edge retention in small-bore work
• Left-hand cutting direction for compatibility with specific toolholder and spindle configurations
• Minimum bore diameter of 0.12 inches enables access to very small internal features
• Maximum bore depth of 0.8 inches suits typical small-component bore lengths
• Bright finish coating reduces built-up edge tendency on ferrous and non-ferrous materials
• 3/16-inch shank diameter fits standard small-bore toolholder blocks and boring head adapters

Compatibility

Designed as an OEM-style replacement and standard tooling option for small-diameter boring operations on CNC and manual lathes equipped with 3/16-inch shank boring toolholders.

Installation Notes

Installation and tool changes should be performed with the machine at a complete stop and in a locked-out, tagged-out state per standard lockout/tagout procedures. Ensure the shank is clamped securely in a compatible toolholder with sufficient engagement length to resist cutting forces. Avoid overhang beyond the recommended depth-to-diameter ratio to minimize deflection and chatter. Consult the machine tool manufacturer guidelines and applicable shop safety standards when setting tool offsets and depth of cut.