Accupro ACC-HB2101250 Helical Boring Bar Solid Carbide

Product Description

The ACCUPRO ACC-HB2101250 is a helical boring bar machined from submicron-grade solid carbide and designed for right-hand cutting operations in small-bore applications. It accepts a minimum bore diameter of 0.21 inches and reaches a maximum bore depth of 1.25 inches, making it well suited for tight, precise internal turning work. The 0.25-inch shank diameter and 2.5-inch overall length keep the tool compact and rigid. A bright finish coating is applied to the flute geometry. This tool is installed and operated by machinists and CNC tooling specialists working on manual or CNC lathes and boring mills.

This helical boring bar fits standard toolholding setups that accept a 0.25-inch shank. It is intended for precision internal boring of small-diameter features in metals and similar materials on production or job-shop machinery. The right-hand cut direction makes it compatible with conventional spindle rotation on most lathes. The submicron carbide grade provides consistent edge life in demanding cutting conditions where dimensional accuracy in the bore is required.

Key Features

• Submicron solid carbide construction for extended edge life and rigidity in small-bore work
• Minimum bore diameter of 0.21 inches enables machining of tight internal features
• Maximum bore depth of 1.25 inches suits a wide range of shallow to moderate bore depths
• Right-hand cutting direction for standard spindle rotation compatibility
• Bright finish coating on cutting geometry
• Compact 0.25-inch shank diameter fits common small-bore toolholding systems

Compatibility

Designed for use in toolholding systems that accept a 0.25-inch shank diameter; suitable for right-hand internal boring operations on manual lathes, CNC turning centers, and boring mills requiring a minimum bore diameter of 0.21 inches.

Installation Notes

Installation and setup should be performed by a qualified machinist. Ensure the machine spindle is fully stopped and all stored energy is cleared before mounting or removing the boring bar. Secure the shank firmly in a compatible toolholder to the holder manufacturer's specified clamping procedure to prevent chatter and tool pullout. Verify bore diameter and depth clearances before engaging the cut.