Iscar 6405289 Chamfering Boring Bar Submicron Carbide

Product Description

The ISCAR 6405289 is a chamfering boring bar designed for internal chamfering and bore finishing operations on CNC lathes and machining centers. Built from submicron-grade solid carbide with a TiAlN and TiN dual coating, this bar delivers consistent edge integrity at elevated cutting speeds. It features a right-hand cutting direction, a 20-degree bar end angle, and a 0.004-inch corner radius. The overall length is 1.4961 inches with a shank diameter of 4.00 mm, making it suitable for tight-bore applications starting at a minimum bore diameter of 0.1378 inches. Machinists and CNC operators working in precision machining environments are the primary installers.

This chamfering boring bar is suited for small-bore internal chamfering on ferrous and non-ferrous workpieces in production and job-shop environments. The 0.9449-inch maximum bore depth allows it to reach into deep features relative to its compact form factor. The IC908 manufacturer grade indicates it is optimized for tough cutting conditions where edge retention and thermal resistance are critical. It is packaged as a single unit and is appropriate for use in both roughing and finishing passes on bores requiring precise chamfer geometry.

Key Features

• Submicron solid carbide construction with TiAlN and TiN finish coating for extended tool life
• Right-hand cutting direction for standard lathe and machining center setups
• 20-degree bar end angle for consistent chamfer geometry
• 0.004-inch corner radius for controlled edge definition
• Minimum bore diameter of 0.1378 inches enables access to small, tight bores
• IC908 manufacturer grade optimized for high-speed and interrupted cutting conditions

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC lathes and machining centers accepting 4.00 mm shank boring bars in small-bore internal chamfering applications.

Installation Notes

Installation and tool setup should be performed by a qualified machinist or CNC operator with the machine powered down and all axes at rest before tool changes. Ensure the shank is properly secured in a compatible tool holder torqued to the machine manufacturer's specifications. Verify bore clearance and runout before initiating a cutting pass. Follow the tooling manufacturer's recommended surface footage and feed rates for the IC908 carbide grade and workpiece material combination.