Micro 100 QBB-200750X Boring Bar Solid Carbide Right Hand

Product Description

The MICRO 100 QBB-200750X is a solid carbide boring bar designed for precision internal turning and boring operations on CNC and manual lathes. It accepts a minimum bore diameter of 0.2 inches and reaches a maximum bore depth of 0.75 inches, making it suited for small-diameter, close-tolerance work where rigidity and surface finish are critical. The 0.25-inch shank diameter provides a compact, secure tool-holder interface. A 0.005-inch corner radius reduces stress concentration at the cutting edge while maintaining dimensional accuracy on finished bores. Machinists and tool-and-die professionals select this bar when tight bore tolerances and controlled chip evacuation matter most.

This boring bar is intended for use in precision machining environments including job shops, manufacturing cells, and tool rooms. It is well suited for boring small through-holes and blind bores in ferrous and non-ferrous workpieces. The right-hand cutting direction is standard for conventional lathe and boring applications. With a 2-inch overall length and 0.25-inch shank, it fits standard small-bore tool holders and quick-change systems commonly used in production and prototype work.

Key Features

• Solid carbide construction for maximum rigidity and wear resistance in small-bore applications
• Minimum bore diameter of 0.2 inches enables work in tight, small-diameter bores
• Maximum bore depth of 0.75 inches accommodates typical through and blind bore requirements
• 0.005-inch corner radius for improved surface finish and reduced edge stress
• Right-hand cutting direction for standard lathe and boring machine setups
• Compact 0.25-inch shank diameter fits standard small-bore tool holders

Compatibility

Designed as an OEM-style replacement or direct-fit boring bar for standard 0.25-inch shank tool holders used in small-bore CNC turning and manual lathe applications.

Installation Notes

Installation and operation should be performed by a qualified machinist familiar with lathe tooling and boring bar setup. Secure the shank fully in the tool holder with proper clamping torque per the tool-holder manufacturer's specification before engaging the workpiece. Ensure the cutting edge is set to the correct center height before beginning the bore. Power down and lock out the machine before changing or adjusting tooling.