Iscar 6403795 Chamfering Boring Bar Solid Carbide

Product Description

The ISCAR 6403795 is a solid carbide chamfering boring bar designed for internal chamfering operations on small-bore workpieces. It cuts right-hand and reaches a minimum bore diameter of 0.0394 inches (1.00 mm), making it suitable for precision work in tight bores. The bar has a maximum bore depth of 0.2559 inches (6.50 mm) and an overall length of 0.8661 inches. A TiCN finish coating — titanium carbonitride — improves surface hardness and wear resistance. Manufactured to ISCAR grade IC228, this bar suits high-speed finishing and chamfering passes where dimensional accuracy is critical. Licensed machinists and CNC operators are the primary users.

This chamfering boring bar is suited for small-bore internal chamfering on turned or milled parts, particularly where bore entry geometry requires a precise angular cut. The compact shank diameter of 4.00 mm and short overall length of 0.8661 inches make it appropriate for swiss-type lathes, CNC turning centers, and small-bore boring operations in both production and job-shop environments. The 0.002-inch corner radius supports clean transitions at the chamfer edge without chipping on hardened or abrasive materials.

Key Features

• Solid carbide construction for rigidity and wear resistance in small-bore applications
• TiCN (Titanium Carbonitride) coating for extended tool life and reduced friction
• Right-hand cutting direction for standard CNC turning and boring setups
• 0.0394-inch minimum bore diameter enables work in very small internal features
• 0.002-inch corner radius for controlled chamfer geometry and clean edge transitions
• ISCAR grade IC228 substrate suited for finishing and light chamfering passes

Compatibility

Designed as an OEM-style solid carbide chamfering boring bar for use in toolholders and boring systems that accept a 4.00 mm shank diameter.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or removing the bar from its holder. Ensure the shank is fully seated and the toolholder bore is clean and free of chips before clamping. Follow the machine tool manufacturer's recommended runout and extension guidelines for small-diameter boring bars to minimize chatter.