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The MICRO 100 BB-120350S is a solid carbide boring bar designed for precision internal diameter machining on lathes and turning centers. With a minimum bore diameter of 0.12 inches and a maximum bore depth of 0.35 inches, this bar is built for tight, small-bore applications where rigidity and dimensional accuracy are critical. The solid carbide construction provides superior stiffness and wear resistance compared to steel-bodied alternatives, making it well-suited for consistent, repeatable cuts in production and job-shop environments. The right-hand cutting direction follows standard lathe setup conventions. Machinists and tool-and-die professionals are the primary users of this tool.
This boring bar is intended for small-bore internal turning operations on CNC and manual lathes. The 3/16-inch shank diameter fits standard small-bore toolholders and quick-change systems commonly used in precision machining setups. At 2 inches overall length, it is sized for compact, close-clearance boring applications. It is appropriate for use in materials where carbide tooling is preferred, such as hardened steels, stainless, and cast iron, in both light finishing and moderate material removal passes.
Designed as an OEM-style replacement or direct-use solid carbide boring bar for lathes and turning centers accepting a 3/16-inch shank boring bar toolholder.
Installation is performed by qualified machinists. Before mounting, power down and lock out the lathe or turning center per facility lockout/tagout procedures. Secure the shank firmly in the toolholder to the recommended clamping depth to minimize overhang and chatter. Do not exceed the maximum bore depth of 0.35 inches, as overextension can cause tool deflection or breakage in solid carbide tooling.
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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