Iscar 6491475 Solid Carbide Boring Bar 0.1969 in Min Bore

Product Description

The ISCAR 6491475 is a solid carbide boring bar designed for internal diameter boring operations on CNC lathes and turning centers. Built with a 5 mm shank diameter and a 40 mm overall length, it reaches a minimum bore diameter of 0.1969 inches (5.00 mm) and a maximum bore depth of 0.9449 inches (24.00 mm). The tool features a TiAlN finish coating and is manufactured to the IC908 grade, a submicron carbide grade suited for demanding cutting conditions. Right-hand cutting geometry makes this bar suitable for standard lathe orientation. Machinists and toolroom operators working with tight-tolerance bores at small diameters will find this bar appropriate for precision finish and semi-finish passes.

This boring bar is intended for small-diameter internal boring applications in precision machining environments, including production turning and toolroom work. Its compact shank and short overall length make it well-suited for shallow, tight bores where larger tooling will not fit. The IC908 grade and TiAlN coating support use on a range of workpiece materials, including steels and stainless steels under moderate to high cutting speeds.

Key Features

• Minimum bore diameter of 0.1969 inches (5.00 mm) for small-bore internal turning
• Maximum bore depth of 0.9449 inches (24.00 mm)
• Solid carbide construction for rigidity and vibration resistance in small overhangs
• TiAlN finish coating for extended tool life and heat resistance
• IC908 manufacturer grade for consistent performance in steel and stainless applications
• Right-hand cutting direction for standard lathe setup

Compatibility

Designed as a direct-fit solid carbide boring bar for CNC lathes and turning centers that accept a 5 mm shank diameter boring bar with right-hand cutting orientation.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machine spindle before mounting or removing tooling. Ensure the shank is clamped securely in a compatible boring bar holder to the full recommended grip length to minimize deflection. Do not exceed the machine tool manufacturer's recommended overhang ratio for the shank diameter.