Iscar 6402760 Boring Bar 0.315 in Min Bore Solid Carbide

Product Description

The ISCAR 6402760 is a solid carbide boring bar designed for internal diameter machining operations requiring tight tolerances and consistent surface finish. With a minimum bore diameter of 0.315 inches (8.00 mm) and an overall length of 1.378 inches (35.00 mm), this bar is built for small-bore applications where rigidity and precision are critical. The right-hand cutting direction suits standard CNC and manual lathe setups. The TiCN and TiN finish coatings, combined with ISCAR grade IC228 carbide, provide wear resistance and thermal stability during interrupted or continuous cuts in a range of workpiece materials.

This boring bar is suited for use in CNC turning centers, manual lathes, and gang-tool setups where small internal diameters must be machined to close tolerances. The 7.00 mm shank diameter fits standard small-bore tooling blocks and holders. With a maximum bore depth of 0.0984 inches (2.50 mm), it is best applied to shallow internal features such as counterbores, recesses, and short through-bore finishing passes. Machinists and CNC operators in precision machining, tool rooms, and production shops are the primary users.

Key Features

• Minimum bore diameter: 0.315 inches (8.00 mm) for small internal ID applications
• Maximum bore depth: 0.0984 inches (2.50 mm)
• Solid carbide construction for rigidity and vibration resistance in small-bore work
• Dual TiCN and TiN finish coating for wear resistance and extended tool life
• ISCAR grade IC228 carbide substrate suited for a wide range of machining conditions
• Right-hand cutting direction for standard lathe and turning center orientation

Compatibility

Designed for use with standard 7.00 mm shank boring bar holders and tooling blocks on CNC turning centers and manual lathes configured for right-hand internal boring operations.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the tooling block is properly secured before mounting or removing the boring bar. The bar must be clamped at the correct overhang length to minimize deflection; excessive overhang beyond the shank diameter recommendation will reduce accuracy and increase chatter risk. Confirm holder bore and clamping screw torque per the tooling system manufacturer specifications before running cuts.