Accupro ACC-BB3201250A Boring Bar Solid Carbide Tialn

Product Description

The ACCUPRO ACC-BB3201250A is a micrograin solid carbide boring bar designed for precision internal boring operations on CNC lathes and manual turning centers. It features a 0.32-inch minimum bore diameter and a maximum bore depth of 1.25 inches, making it well suited for tight-tolerance small-bore work. The 3/8-inch shank diameter and 2.5-inch overall length provide a compact, rigid setup that minimizes deflection. A TiAlN finish coating improves heat resistance and tool life when machining ferrous and hardened materials. This bar is installed and used by machinists and toolroom operators working in production or job-shop environments.

This boring bar is appropriate for small-bore internal diameter finishing and semi-finishing operations in both production and prototype settings. The right-hand cutting direction suits standard lathe spindle rotation. Its micrograin carbide substrate handles interrupted cuts and hard materials better than standard carbide grades. Typical applications include close-tolerance bore sizing in steel, cast iron, stainless, and similar ferrous workpiece materials where surface finish and dimensional accuracy are critical.

Key Features

• Micrograin solid carbide construction for improved rigidity and edge retention
• TiAlN coating for elevated heat resistance and extended tool life in ferrous machining
• 0.32-inch minimum bore diameter for small-bore internal operations
• 1.25-inch maximum bore depth suitable for shallow-to-moderate bore depths
• 3/8-inch shank diameter for compatibility with standard boring bar holders
• Right-hand cutting direction for standard lathe spindle rotation

Compatibility

Designed for use in standard boring bar holders accepting a 3/8-inch shank diameter on CNC and manual turning centers configured for right-hand internal boring.

Installation Notes

Installation is performed by machinists using a qualified boring bar holder or toolpost with a 3/8-inch bore. The machine spindle must be stopped and the toolholder fully secured before inserting or removing the bar. Ensure the bar is clamped at adequate engagement depth to prevent pullout under cutting loads. Follow machine manufacturer torque specifications for set screws and consult applicable shop safety procedures before operation.