Iscar 6402279 Solid Carbide Boring Bar 0.1969 in Min Bore

Product Description

The ISCAR 6402279 is a solid carbide boring bar designed for internal diameter boring operations on CNC lathes and turning centers. With a minimum bore diameter of 0.1969 inches (5.00 mm) and a maximum bore depth of 0.748 inches (19.00 mm), this bar is suited for small-bore finishing and semi-finishing work. The right-hand cutting direction and 0.1500-inch corner radius make it compatible with standard right-hand tooling setups. A TiN finish coating helps extend tool life in ferrous and non-ferrous applications. Machining professionals and toolroom technicians select this bar when tight bore tolerances and consistent chip evacuation are priorities.

This boring bar is intended for use in small-bore internal turning applications on machining centers, CNC lathes, and manual lathes capable of holding a 5.00 mm shank. The 35.00 mm overall length suits compact toolholders and Swiss-style or gang-tool setups where minimal overhang is required. The solid carbide construction provides rigidity and vibration resistance in tight-bore configurations where steel shanks would deflect. It is appropriate for both production environments and job-shop applications requiring repeatable bore geometry.

Key Features

• Minimum bore diameter: 0.1969 inches (5.00 mm) for small-bore internal operations
• Maximum bore depth: 0.748 inches (19.00 mm)
• Solid carbide construction for rigidity and reduced deflection in small-bore applications
• TiN finish coating for improved wear resistance and tool life
• Right-hand cutting direction for standard lathe and turning center setups
• ISCAR manufacturer grade IC228 insert or substrate designation
• Corner radius: 0.1500 inches for consistent surface finish control

Compatibility

Designed as an OEM-style replacement or direct-fit boring bar for toolholding systems accepting a 5.00 mm round shank with a 35.00 mm overall length.

Installation Notes

Installation of boring bars should be performed by a qualified machinist with the machine fully powered down and the spindle locked before tool changes. The bar shank must be clamped securely in a compatible boring head or toolholder to the manufacturer-specified clamping length to prevent chatter and tool pull-out during cutting. Verify shank runout with a dial indicator before commencing cuts. Always confirm bore clearance and depth stop settings before initiating the first pass.