Iscar 6403667 Corner Radius Boring Bar Solid Carbide

Product Description

The ISCAR 6403667 is a solid carbide corner radius boring bar designed for precision internal turning and boring operations on CNC lathes and machining centers. Built for right-hand cutting, it produces a controlled 0.0079-inch corner radius at the cutting edge, making it suitable for tight-tolerance bores where edge geometry consistency is critical. The bar has a minimum bore diameter of 0.2756 inches and a maximum bore depth of 1.142 inches, with an overall length of 1.772 inches. A TiCN and TiN finish coating in manufacturer grade IC228 provides wear resistance and extended tool life in a range of workpiece materials.

This boring bar is intended for small-diameter internal boring applications in production and job-shop environments. It is well suited for CNC turning centers where consistent corner geometry and close bore tolerances are required. The solid carbide construction and dual-layer coating make it appropriate for use on steel, stainless, and cast iron workpieces under stable cutting conditions. Machinists and CNC setup technicians are the primary installers and operators of this tooling.

Key Features

• Solid carbide construction for rigidity and wear resistance in small-diameter bores
• 0.0079-inch corner radius for controlled edge geometry on finish boring passes
• TiCN and TiN dual-layer coating in grade IC228 for extended tool life
• Right-hand cutting direction for standard CNC lathe toolpost orientation
• Minimum bore diameter of 0.2756 inches enables use in tight, small-diameter applications
• Maximum bore depth of 1.142 inches with an overall length of 1.772 inches

Compatibility

Designed as an OEM-style solid carbide boring bar for small-diameter internal turning applications on CNC lathes and turning centers accepting a 7.00 mm shank diameter.

Installation Notes

Installation and setup should be performed by a qualified CNC machinist or tooling technician. Ensure the machine spindle is fully stopped and the turret or toolpost is locked before inserting or adjusting the boring bar. Confirm proper shank seating and overhang length before running any cutting program. Follow the machine tool manufacturer guidelines for tool projection limits to avoid chatter and tool deflection in small-diameter bores.