Iscar 6403681 Chamfering Boring Bar Solid Carbide

Product Description

The ISCAR 6403681 is a solid carbide chamfering boring bar designed for internal chamfering operations on CNC lathes and boring machines. It cuts right hand and reaches a minimum bore diameter of 0.2677 inches, making it suitable for small-bore finish work. The bar has an overall length of 2.1654 inches and a maximum bore depth of 1.5354 inches. A corner radius of 0.0059 inches contributes to controlled chamfer geometry. The TiCN and TiN finish coatings improve wear resistance and extend tool life in demanding cutting applications. Machining professionals and toolroom technicians install this bar as a precision insert-style solution for chamfering tight bores.

This chamfering boring bar is intended for use in precision machining environments where small internal diameters require accurate chamfer profiles. It is suited to production turning, prototype work, and toolroom applications involving ferrous and non-ferrous materials. The ISCAR manufacturer grade IC228 indicates suitability for a range of ISO turning applications. The 7.00 mm shank diameter fits standard small-bore tool holders and quick-change turret systems commonly found on CNC turning centers.

Key Features

• Solid carbide construction for rigidity and vibration resistance in small-bore applications
• Right hand cut geometry for standard lathe rotation setups
• Minimum bore diameter of 0.2677 inches enables work in tight internal features
• TiCN and TiN dual-layer coating improves surface hardness and lubricity
• ISCAR manufacturer grade IC228 for consistent performance across a range of workpiece materials
• Corner radius of 0.0059 inches for precise chamfer edge definition

Compatibility

Designed as a direct-fit chamfering boring bar for tool holders accepting a 7.00 mm shank diameter. Verify holder bore tolerance and clamping method before installation. No specific machine or system compatibility was stated in the product data.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with CNC lathe tooling setup. Power down and lock out the machine spindle before inserting or removing any boring bar. Secure the shank to the specified clamping torque of the tool holder manufacturer and confirm runout with a dial indicator before cutting. Do not exceed the maximum bore depth of 1.5354 inches stated for this tool.