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The MICRO 100 QBT-2301100X is a solid carbide boring bar designed for internal diameter turning and bore finishing operations on CNC lathes and manual turning centers. It accepts a minimum bore diameter of 0.230 inches and reaches a maximum bore depth of 1.100 inches, making it well suited for tight, deep-bore work where rigidity and dimensional accuracy are critical. The 5/16-inch shank diameter and 2.5-inch overall length give machinists a compact, stiff tool that resists deflection at depth. A 0.006-inch corner radius is ground into the insert geometry to balance fine surface finish with edge strength. Licensed machinists and toolroom technicians are the primary users.
This boring bar is intended for precision metal-cutting applications in job shops, production machining cells, and toolroom environments. The right-hand cutting direction suits standard spindle rotation on conventional CNC turning equipment. Its solid carbide construction makes it appropriate for hard materials, interrupted cuts, and applications where high-speed steel tools deflect or wear too quickly. It is a single-piece, non-insert bar, meaning the cutting edge is integral to the carbide body itself.
Designed as an OEM-style solid carbide boring bar for use in standard 5/16-inch boring bar holders on CNC and manual turning centers requiring a minimum bore entry of 0.230 inches.
Installation is performed by qualified machinists. Power down and lock out the machine spindle before mounting or removing the tool. Secure the shank fully within the holder to the recommended overhang length to minimize vibration and deflection. Inspect the cutting edge for chipping before each use, as solid carbide edges are brittle and sensitive to improper seating or interrupted-cut shock.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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