Internal Tool 56-1160 Profile Boring Bar Solid Carbide

Product Description

The INTERNAL TOOL 56-1160 is a solid carbide profile boring bar designed for internal turning and bore finishing operations on CNC lathes and manual turning centers. It accepts a minimum bore diameter of 0.36 inches and reaches a maximum bore depth of 1.25 inches, making it well suited for shallow-to-mid-depth bores in tight-tolerance work. The right-hand cutting direction and 0.015-inch corner radius deliver consistent surface finish on profiled internal features. With a 3/8-inch shank diameter and a 2.5-inch overall length, this bar fits standard boring bar holders used in production and job-shop turning environments.

This boring bar is used in precision turning applications where a profiled internal surface is required. It is appropriate for both prototype runs and production environments where consistent bore geometry and surface finish are critical. The solid carbide construction maintains rigidity in short-overhang setups, reducing chatter in materials ranging from aluminum to hardened steels. Machinists and CNC programmers working on small-bore components will find the 0.36-inch minimum bore useful for restricted-diameter work. The bright, uncoated finish allows direct inspection of the cutting edge before and after use.

Key Features

• Solid carbide construction for rigidity and wear resistance in small-bore turning
• 0.36-inch minimum bore diameter for restricted internal geometries
• 1.25-inch maximum bore depth suitable for shallow-to-mid-depth profiling
• 0.015-inch corner radius for controlled surface finish on profiled features
• Right-hand cutting direction compatible with standard lathe spindle rotation
• Bright, uncoated finish for easy edge inspection and regrind verification

Compatibility

Designed for use in standard 3/8-inch boring bar holders on CNC and manual turning centers capable of accommodating a 2.5-inch overall length tool.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Power down and lock out the machine spindle before seating or adjusting the boring bar in the tool holder. Ensure the shank is fully seated and clamped to the holder manufacturer's specification before running. Verify tool overhang does not exceed the minimum required for the bore depth to maintain rigidity and prevent chatter.