Iscar 6403783 Chamfering Boring Bar Solid Carbide

Product Description

The ISCAR 6403783 is a solid carbide chamfering boring bar designed for internal chamfering and small-bore finishing operations on CNC lathes and machining centers. With a minimum bore diameter of 0.1969 inches (5.00 mm) and a maximum bore depth of 0.5512 inches (14.00 mm), this bar handles tight-tolerance small-bore work where rigidity and precision are critical. The 5.00 mm shank diameter and 1.1811 inch overall length make it well-suited for confined tooling envelopes. A TiCN and TiN finish coating in ISCAR grade IC908 provides wear resistance and thermal stability across a range of workpiece materials. Machining professionals and toolroom technicians working with small-diameter bores will find this bar suited for production and job-shop environments alike.

This chamfering boring bar is intended for right-hand cutting operations in small-bore applications on lathes and turning centers. It is applicable in production machining of steel, stainless steel, and similar materials where a fine chamfer or internal profile is required at bore diameters starting at 0.1969 inches. The compact geometry and solid carbide construction make it appropriate for high-rpm finishing passes where deflection must be minimized. It is typically used by machinists and CNC operators working with precision components in aerospace, medical, and general manufacturing contexts.

Key Features

• Solid carbide construction for maximum rigidity in small-bore applications
• Minimum bore diameter of 0.1969 inches (5.00 mm) enables work in very tight bores
• TiCN and TiN dual finish coating for extended tool life and heat resistance
• ISCAR grade IC908 for consistent performance across ferrous and hard materials
• 0.0059 inch corner radius for controlled chamfer geometry
• Right-hand cutting direction for standard lathe and turning center setup

Compatibility

Designed as an OEM-style replacement and standard tooling solution for CNC lathes and turning centers requiring right-hand chamfering boring bars with a 5.00 mm shank diameter.

Installation Notes

Installation and setup should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the toolholder is properly clamped before inserting or adjusting the bar. Confirm shank seating depth and runout with a dial indicator before initiating a cut. Follow the machine tool manufacturer guidelines for toolholder torque and overhang limits to avoid chatter or premature tool wear.