Iscar 6403914 Boring Bar 0.2362 in Solid Carbide

Product Description

The ISCAR 6403914 is a solid carbide boring bar designed for small-diameter internal turning and boring operations on CNC and manual lathes. It accepts a right-hand cutting direction and delivers a minimum bore diameter of 0.2362 inches (6.00 mm) with a maximum bore depth of 0.1181 inches (3.00 mm). The bar measures 1.378 inches overall length and features a dual-layer TiAlN and TiN finish coating combined with ISCAR grade IC1008, making it well suited for hard and abrasive workpiece materials at higher cutting speeds. Machinists and toolroom technicians working with tight-tolerance bores on small components will find this bar a practical OEM-grade option.

This boring bar is intended for precision internal machining applications where small bore diameters and controlled depth are required. Typical use cases include bore finishing on hydraulic valve bodies, medical components, instrument housings, and other small-part machining setups. The 6.00 mm shank diameter and compact 35.00 mm overall length allow it to fit standard small-bore toolholders and live tooling turrets on CNC turning centers. It is equally applicable on manual lathes equipped with appropriate boring bar holders.

Key Features

• Solid carbide construction for rigidity and vibration resistance in small-diameter bores
• TiAlN and TiN dual-layer coating for extended tool life in hard and abrasive materials
• ISCAR IC1008 grade optimized for high cutting speeds and hard workpiece materials
• Right-hand cutting direction for standard bore orientation
• Compact 1.378 inches overall length suits tight-clearance setups
• Minimum bore diameter of 0.2362 inches supports precision small-bore finishing

Compatibility

Designed as an OEM-style solid carbide boring bar for use in standard 6.00 mm shank boring bar holders and compatible CNC or manual lathe tooling systems.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians familiar with lathe tooling setup. Ensure the machine spindle is fully stopped and all motion is locked out before changing or seating the boring bar. Verify shank diameter compatibility with the toolholder bore before clamping, and confirm tool overhang does not exceed the holder manufacturer recommendations for the bore depth required. Follow applicable shop safety procedures and machine manufacturer guidelines during setup.