Accupro ACC-BBL290750 Boring Bar Left Hand Carbide

Product Description

The ACCUPRO ACC-BBL290750 is a left-hand cut solid carbide boring bar designed for precision internal boring operations on CNC and manual lathes. Built from submicron-grade carbide with a bright finish coating, this bar delivers consistent dimensional accuracy in tight-tolerance bores. It accepts a minimum bore diameter of 0.29 inches and reaches a maximum bore depth of 0.75 inches. The 5/16-inch shank diameter and 2.5-inch overall length make it well-suited for small-bore work on production floors and job shops. Machinists and toolroom professionals working with hardened materials or fine finishes rely on submicron carbide for its wear resistance and edge stability.

This boring bar is intended for internal diameter turning and boring operations requiring a left-hand cutting direction. It fits standard boring bar holders sized for a 5/16-inch shank. Typical applications include finishing passes on small bores in steel, cast iron, aluminum, and other machinable materials. The compact overall length of 2.5 inches suits applications where tool reach and rigidity must be balanced in confined bore entry conditions.

Key Features

• Submicron solid carbide construction for superior wear resistance and edge retention
• Left-hand cutting direction for specific machine orientations and back-boring setups
• Bright finish coating reduces friction and aids chip evacuation
• 0.29-inch minimum bore diameter enables machining of small internal features
• 5/16-inch shank diameter fits standard lathe and boring bar toolholders
• 2.5-inch overall length provides rigidity in short-reach boring applications

Compatibility

Designed for use in standard boring bar toolholders accepting a 5/16-inch shank diameter. Suitable for CNC and manual lathes configured for left-hand cutting operations.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and lock out the machine before inserting or removing the boring bar from the toolholder. Ensure the shank is fully seated and the toolholder set screws are torqued according to the toolholder manufacturer specifications. Verify cutting direction and tool orientation before initiating a cut to prevent damage to the workpiece or tool.