Accupro ACC-BB4901250 Boring Bar Submicron Solid Carbide

Product Description

The ACCUPRO ACC-BB4901250 is a solid carbide boring bar designed for precision internal diameter machining on lathes and boring mills. Manufactured from submicron-grade carbide with a bright finish coating, this bar delivers tight dimensional control in demanding cutting applications. It accepts a 1/2-inch shank diameter, reaches a minimum bore diameter of 0.49 inches, and handles a maximum bore depth of 1.25 inches. The right-hand cutting direction suits standard spindle rotation setups. Overall length is 3 inches. This tool is suited for machinists and toolroom operators working in production or job-shop environments where bore tolerance and surface finish are critical.

This boring bar is used in CNC lathe, manual lathe, and boring mill setups where small-diameter internal features require precise stock removal. Typical applications include finishing bores in ferrous and non-ferrous workpieces, producing close-tolerance holes, and cleaning up drilled or rough-bored cavities. The submicron carbide grade performs well at higher surface speeds and in interrupted or continuous cut scenarios where wear resistance is important. It is appropriate for both production runs and prototype work requiring repeatable bore geometry.

Key Features

• Submicron solid carbide construction for high wear resistance and dimensional stability
• Minimum bore diameter of 0.49 inches suits small-bore internal machining
• Maximum bore depth of 1.25 inches (1-1/4 inches) for reach in deeper cavities
• Right-hand cut orientation for standard spindle rotation compatibility
• Bright finish coating on the bar body
• 1/2-inch shank diameter fits common boring bar holders and quick-change tooling systems

Compatibility

Designed for use with standard 1/2-inch boring bar holders on CNC lathes, manual lathes, and boring mills where right-hand internal cutting tools are required.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the toolpost or boring bar holder is clean and free of chips before seating the shank. Torque the holder set screws according to the toolholder manufacturer specifications, not the boring bar specifications. Confirm correct tool height and overhang minimization before taking a first cut to reduce chatter and deflection.