Micro 100 QBT-180750X Boring Bar Solid Carbide Right Hand

Product Description

The MICRO 100 QBT-180750X is a solid carbide boring bar designed for precision internal turning and boring operations on metalworking lathes and machining centers. It features a 0.180-inch minimum bore diameter, a 0.750-inch maximum bore depth, and a 1/4-inch shank diameter, making it well suited for small-bore work where rigidity and dimensional accuracy are critical. The 0.006-inch corner radius delivers a controlled finishing edge, and the solid carbide construction resists deflection and wear at elevated cutting speeds. Overall length is 2.0 inches. Right-hand cutting orientation is standard.

This boring bar is intended for use in precision machining environments where small-diameter internal bores must be held to tight tolerances. Typical applications include finish boring of bearing seats, bushings, ports, and similar features in ferrous and non-ferrous workpieces. It is sized for use on manual engine lathes, CNC turning centers, and mill-turn machines equipped with appropriate boring bar holders. Machinists and toolroom operators working in production and job-shop settings are the primary users of this tooling.

Key Features

• Solid carbide construction provides rigidity and wear resistance in demanding bore conditions
• 0.180-inch minimum bore diameter suits tight, small-diameter internal features
• 0.750-inch maximum bore depth allows sufficient reach for most small-bore applications
• 1/4-inch shank diameter fits standard boring bar holders and quick-change toolposts
• 0.006-inch corner radius supports controlled surface finish on bore walls
• Right-hand cutting direction for standard lathe and turning center setups

Compatibility

Designed as a direct-fit boring bar for use with 1/4-inch boring bar holders on manual and CNC lathes or turning centers that accommodate solid carbide boring bars in this shank diameter range.

Installation Notes

Installation should be performed by a qualified machinist familiar with turning tooling setup. Power down and lock out the machine spindle before securing or removing the boring bar from the holder. Ensure the shank is fully supported in the holder to minimize overhang and reduce chatter risk. Verify bore diameter and depth clearances against workpiece geometry before initiating a cut.