Iscar 6403848 Chamfering Boring Bar Solid Carbide

Product Description

The ISCAR 6403848 is a solid carbide chamfering boring bar designed for internal chamfering and bore finishing operations on CNC turning centers and manual lathes. Built from solid carbide with a TiAlN finish coating and manufactured to ISCAR grade IC908, it delivers consistent cutting performance in hardened and difficult-to-machine materials. The bar features a right-hand cutting direction, a minimum bore diameter of 0.2677 inches, and a maximum bore depth of 1.7323 inches. Overall length is 2.3622 inches with a corner radius of 0.0059 inches. Machinists and tool-room technicians working in precision boring applications will find this bar suited to tight-tolerance internal chamfer work.

This chamfering boring bar is intended for use in small-bore internal machining applications where access is restricted and precision geometry is required. The 7.00 mm shank diameter fits standard boring bar holders and quick-change tooling systems compatible with that shank size. Typical applications include chamfering the entry of bored holes, deburring internal edges, and producing consistent chamfer angles in production runs on CNC turning or mill-turn equipment.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding materials
• TiAlN finish coating improves heat resistance and tool life in dry or semi-dry cutting
• ISCAR grade IC908 substrate suited for hardened steels and difficult alloys
• Right-hand cutting direction for standard lathe and CNC turning setups
• Corner radius of 0.0059 inches supports sharp, controlled chamfer geometry
• Compact 2.3622-inch overall length for use in confined boring bar holders

Compatibility

Designed for use in boring bar holders with a 7.00 mm shank bore. Verify holder clearance and minimum bore diameter capability before installation to confirm fitment with your specific tooling system.

Installation Notes

Installation should be performed by a qualified machinist familiar with boring bar setup and CNC tooling systems. Ensure the machine spindle is fully stopped and the turret or tool post is locked before inserting or removing the bar. Confirm the boring bar holder is clean and free of chips before seating the shank to maintain runout tolerances. Do not exceed the recommended maximum bore depth of 1.7323 inches to avoid deflection or tool breakage.