Accupro ACC-BBL320900 Boring Bar Left Hand Solid Carbide

Product Description

The ACCUPRO ACC-BBL320900 is a left-hand cut solid carbide boring bar designed for precision internal diameter machining. Built from submicron-grade carbide with a bright finish, it delivers consistent cutting performance in tight-tolerance bore applications. The bar features a 3/8 inch shank diameter and an overall length of 2.5 inches, with a minimum bore diameter of 0.32 inches and a maximum bore depth of 0.9 inches. It is suited for machinists and toolmakers working on CNC lathes or manual turning centers where fine surface finish and dimensional accuracy are required.

This boring bar is intended for left-hand cut internal boring operations on small-diameter workpieces. Its submicron solid carbide construction handles hard and abrasive materials with reduced deflection compared to high-speed steel alternatives. The bright (uncoated) finish makes it well suited for non-ferrous metals and plastics where coating adhesion could affect chip evacuation or dimensional consistency. Typical applications include production turning, toolroom work, and prototype machining where bore geometry must be held to close tolerances.

Key Features

• Left-hand cut geometry for specific lathe setups and back-boring operations
• Submicron solid carbide construction for rigidity and wear resistance
• Bright (uncoated) finish suitable for non-ferrous and plastic materials
• Minimum bore diameter of 0.32 inches enables work in small-diameter bores
• Maximum bore depth of 0.9 inches provides sufficient reach for typical short-bore applications
• 3/8 inch shank diameter for compatibility with standard boring bar holders

Compatibility

Designed for use in standard 3/8 inch boring bar holders on CNC lathes and manual turning centers. No specific machine model compatibility data was provided by the manufacturer for this part.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine is powered off and in a locked-out state before changing tooling. The bar should be secured firmly in the tool holder with minimal overhang to reduce chatter and deflection. Consult the machine tool manufacturer guidelines for recommended clamping torque and tool stick-out limits.