Accupro ACC-HB040187 Helical Boring Bar Solid Carbide

Product Description

The ACCUPRO ACC-HB040187 is a helical boring bar designed for small-diameter internal boring operations in machining environments. Manufactured from submicron-grade solid carbide with a bright finish coating, this bar delivers the rigidity and edge retention needed for precise bore work at tight tolerances. It accepts a minimum bore diameter of 0.04 inches and reaches a maximum bore depth of 0.1875 inches (3/16 inches). With a 1/8-inch shank diameter and an overall length of 1.5 inches, the ACC-HB040187 is sized for compact setups on CNC lathes, live tooling heads, and small-bore turning applications. Right-hand cutting orientation is standard.

This boring bar is suited for precision machining shops, toolrooms, and production environments where small internal diameters require consistent finish and dimensional accuracy. Its submicron carbide construction makes it a reliable choice for ferrous and non-ferrous materials where tool deflection and chatter must be minimized. Machinists and CNC operators working on small-bore components such as hydraulic fittings, valve bodies, and instrumentation parts will find this tool well-matched to those requirements.

Key Features

• Submicron solid carbide construction for high rigidity and extended tool life
• Minimum bore diameter of 0.04 inches enables work on extremely small internal features
• Maximum bore depth of 0.1875 inches (3/16 inches) for shallow internal passes
• Right-hand cutting direction for standard lathe and CNC turning setups
• Bright finish coating reduces built-up edge on non-ferrous and light ferrous materials
• Compact 1/8-inch shank diameter fits common small-bore toolholders and collet systems

Compatibility

Designed as an OEM-style replacement and standard tooling option for 1/8-inch shank boring bar holders used in CNC lathes, live tooling, and manual turning setups requiring right-hand helical boring bars.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the control is in an E-stop or locked-out state before mounting or removing the boring bar. Secure the shank fully within the toolholder to the manufacturer-specified minimum clamping engagement to prevent pullout during cutting. Verify correct tool offset entry in the control before initiating any bore cycle.