Accupro ACC-HB3001500 Helical Boring Bar Solid Carbide

Product Description

The ACCUPRO ACC-HB3001500 is a helical boring bar machined from submicron-grade solid carbide, designed for internal turning and boring operations on a variety of materials. With a minimum bore diameter of 0.3 inches and a maximum bore depth of 1.5 inches, this bar handles tight-tolerance small-bore work where rigidity and vibration resistance are critical. The bright finish coating protects the substrate and reduces built-up edge. A 5/16-inch shank diameter and 2.5-inch overall length make it compatible with standard boring bar holders and small-bore tool blocks. Machinists and tool-and-die professionals use this bar on CNC lathes and manual turning centers where precise, repeatable finish cuts are required.

This helical boring bar is suited for small-diameter internal boring in production machining, toolroom, and job-shop environments. The right-hand cutting direction makes it appropriate for conventional lathe setups where the spindle rotates counterclockwise when viewed from the tailstock. It is commonly selected for ferrous and non-ferrous materials where submicron carbide grain structure delivers extended tool life and consistent surface finish in finishing and light semi-finishing passes.

Key Features

• Submicron-grade solid carbide construction for superior hardness and wear resistance
• Helical boring bar geometry reduces chatter and improves chip evacuation in small bores
• Minimum bore diameter of 0.3 inches for tight small-bore applications
• Maximum bore depth of 1.5 inches suits typical shallow-to-medium internal turning jobs
• Bright finish coating minimizes friction and resists built-up edge
• Right-hand cutting direction for standard lathe and CNC turning center setups

Compatibility

Designed as an OEM-style replacement and standard toolroom boring bar for use in turning centers and manual lathes equipped with 5/16-inch boring bar holders or compatible small-bore tool blocks.

Installation Notes

Installation is typically performed by a machinist or toolroom technician. Ensure the machine spindle is fully stopped and the tool turret or holder is locked before installing or removing the bar. Secure the shank firmly in the holder to the depth recommended by the holder manufacturer to minimize overhang and reduce vibration. Do not exceed the maximum bore depth specification, as excessive overhang increases deflection and risk of tool breakage.