Scientific Cutting Tools HB240LA Helical Boring Bar Solid Carbide

Product Description

The SCIENTIFIC CUTTING TOOLS HB240LA is a helical boring bar ground from submicron solid carbide and finished with an AlTiN+ coating for extended tool life in demanding machining environments. It accepts a minimum bore diameter of 0.24 inches and reaches a maximum bore depth of 1 inch, making it well suited for small-diameter internal turning and finishing operations. The 7/32-inch shank diameter and 3-inch overall length give it a compact, rigid profile that reduces chatter and deflection at depth. Machinists and toolroom professionals working with CNC lathes or boring mills will find this bar appropriate for precision internal profiling where tight tolerances are required.

This boring bar is designed for small-bore internal turning applications in both production and job-shop environments. Its helical geometry promotes efficient chip evacuation, which is especially critical when working at depth in blind or through-bore features. The right-hand cutting direction suits standard lathe spindle rotation. It is appropriate for use in materials ranging from aluminum and mild steel to harder alloys where submicron carbide grade and AlTiN+ coating provide the necessary hardness and heat resistance.

Key Features

• Submicron solid carbide construction for high rigidity and wear resistance
• AlTiN+ finish coating improves heat resistance and extends cutting edge life
• Helical boring bar geometry promotes chip evacuation at depth
• 0.24-inch minimum bore diameter suits small-diameter internal operations
• Right-hand cutting direction for standard spindle rotation
• 3-inch overall length with 7/32-inch shank for compact, low-deflection setup

Compatibility

Designed for use in CNC lathes, manual lathes, and boring mills that accept a 7/32-inch shank boring bar with right-hand cutting direction.

Installation Notes

A qualified machinist should install and set this boring bar following the machine tool manufacturer's toolholding specifications. Ensure the machine spindle is fully stopped and the control is in an idle or locked state before mounting or adjusting the bar. Verify shank clamp torque per the toolholder manufacturer's guidelines and confirm bar extension is minimized to reduce deflection. Inspect the cutting edge for chips or wear before each use.