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The MICRO 100 BB-140600 is a solid carbide boring bar designed for internal bore finishing and sizing operations on lathes and boring machines. With a minimum bore diameter of 0.140 inches (9/64 inches) and a maximum bore depth of 0.600 inches, this bar handles tight, shallow bores where precision matters. The 3/16-inch shank diameter and 2-inch overall length keep the tool compact and rigid. A bright, uncoated carbide construction delivers sharp cutting performance and good chip visibility. Right-hand cut geometry makes this bar compatible with standard lathe setups. Machinists and toolroom operators working on small-bore applications will find this tool well suited to close-tolerance work.
This boring bar is intended for small-bore internal turning operations in production and toolroom environments. It is suited for use in CNC lathes, manual lathes, and boring mills where bore diameters in the 0.140-inch to approximately 0.600-inch depth range are required. The 0.006-inch corner radius produces a controlled surface finish at the bore wall and bottom. Applications include precision bore sizing, finish passes on through-holes and blind bores, and similar close-tolerance lathe work on ferrous and non-ferrous materials.
Designed as a standard shank boring bar for use in lathes and boring machines accepting a 3/16-inch shank diameter tool holder.
Installation and tool changes should be performed with the machine powered down and the spindle fully stopped. Secure the 3/16-inch shank firmly in the tool holder to the recommended clamping depth to minimize overhang and vibration. Verify that cutting direction and tool orientation match the machine setup before engaging the workpiece. Handle carbide tooling carefully to avoid chipping the cutting edge 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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