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The MICRO 100 BB-3601250 is a solid carbide boring bar designed for precision internal turning and bore finishing operations on CNC and manual lathes. It features a 0.36-inch minimum bore diameter, a maximum bore depth of 1.25 inches, and a right-hand cutting direction. The 3/8-inch shank diameter and 2.5-inch overall length make it suited for close-tolerance work in compact tooling setups. With a 0.006-inch corner radius and an offset of 0.1725 inches, this bar is built for consistent, repeatable cuts in tight bores. Machinists and tool-and-die tradespeople are the primary users of this tooling.
This boring bar fits typical applications in production machining, job shop turning, and maintenance machining environments where small-diameter internal bores require precise finishing. It is appropriate for residential and commercial machine shop use on lathes equipped with standard 3/8-inch tool holders. The uncoated solid carbide construction performs well in ferrous and non-ferrous materials where dimensional accuracy and surface finish are critical. It is sold individually, making it practical for single-tool replacement or initial tooling setup.
Designed as an OEM-style replacement or direct tooling addition for lathes and boring setups that accept a 3/8-inch shank boring bar with right-hand cut geometry.
Installation is performed by qualified machinists following standard lathe tooling setup procedures. The machine spindle must be fully stopped and the lathe powered down before inserting or adjusting the boring bar in the tool holder. Ensure the shank is clamped securely and that bar overhang is minimized to reduce chatter and deflection. Follow applicable shop safety standards and machine manufacturer guidelines during setup.
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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