Iscar 6403794 Chamfering Boring Bar Solid Carbide

Product Description

The ISCAR 6403794 is a solid carbide chamfering boring bar designed for small-bore internal chamfering operations on CNC lathes and machining centers. With a minimum bore diameter of 0.0394 inches and a maximum bore depth of 0.1772 inches, this bar is built for tight, precise work in miniature and small-diameter bores. The right-hand cutting direction suits standard spindle configurations. A TiCN and TiN finish coating over the IC228 carbide grade provides wear resistance and extended tool life in a range of ferrous and non-ferrous workpiece materials. A corner radius of 0.002 inches supports sharp, controlled chamfer geometry.

This chamfering boring bar is suited for precision machining applications where small bore entry and shallow depth requirements demand a compact, rigid tool. Typical applications include chamfering pre-drilled holes, deburring bore entries, and producing internal chamfers on small components in aerospace, medical device, and precision mechanical industries. It is installed and operated by machinists and CNC tooling technicians working with live tooling or turret-based setups on lathes and multi-axis machining centers.

Key Features

• Solid carbide construction provides rigidity and vibration resistance in small-bore applications
• TiCN and TiN dual finish coating extends cutting edge life and reduces built-up edge
• IC228 manufacturer grade carbide suited for a range of cutting conditions
• Minimum bore diameter of 0.0394 inches enables access to very small bore entries
• Right-hand cut configuration compatible with standard spindle rotation
• Corner radius of 0.002 inches for precise chamfer geometry control

Compatibility

Designed as an OEM-style solid carbide chamfering boring bar for use in CNC lathes and machining centers with tooling systems accommodating a 4.00 mm shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Secure the shank firmly in the appropriate tool holder and verify runout before commencing cuts. Power down the machine and lock out energy sources before changing or adjusting tooling. Follow the machine tool manufacturer guidelines for speeds, feeds, and depth of cut when using small-diameter carbide boring bars to avoid tool breakage.