Accupro ACC-BBL2301250 Boring Bar Left Hand Solid Carbide

Product Description

The ACCUPRO ACC-BBL2301250 is a left-hand cutting boring bar machined from submicron-grade solid carbide. It is designed for internal boring operations on CNC lathes, manual lathes, and boring mills where precise hole finishing is required. The bar has a minimum bore diameter of 0.23 inches and a maximum bore depth of 1.25 inches, making it well suited for small, tight-tolerance bores. A bright finish coating is applied to the carbide body. The 5/16-inch shank diameter and 2.5-inch overall length keep the tool compact for close-clearance setups. Machinists and toolroom technicians working on precision components are the primary users of this style of bar.

This boring bar is appropriate for production and job-shop environments requiring left-hand cutting geometry, typically used when the spindle rotation or workholding orientation demands a reverse-cut direction. It fits toolholders and boring bar sleeves sized for a 5/16-inch shank. Applications include finishing drilled or reamed holes to a precise final diameter in metals and similar machinable materials where surface finish and dimensional accuracy are critical.

Key Features

• Left-hand cutting direction for reverse-spindle or specific fixturing applications
• Submicron solid carbide construction for rigidity and extended tool life
• Minimum bore diameter of 0.23 inches enables work in small-diameter bores
• Maximum bore depth of 1.25 inches suits shallow to medium-depth boring passes
• Bright finish coating on carbide body
• Compact 5/16-inch shank diameter and 2.5-inch overall length for close-clearance setups

Compatibility

Designed for use in toolholders and boring bar sleeves accepting a 5/16-inch shank diameter. Confirm holder bore size and cutting direction requirements before installation.

Installation Notes

This boring bar is installed by qualified machinists in lathe or boring mill toolholders. Ensure the machine spindle is fully stopped and locked out before mounting or removing the tool. Secure the shank firmly in the holder to the toolholder manufacturer's recommended clamping procedure to prevent chatter or pullout. Verify cutting direction matches spindle rotation before beginning a pass.