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The MICRO 100 BB-230800 is a solid carbide boring bar designed for internal diameter machining operations on lathes and boring mills. It delivers a minimum bore diameter of 0.2300 inches and a maximum bore depth of 0.8000 inches, making it well suited for tight-tolerance finish boring in small-diameter workpieces. The 5/16-inch shank diameter provides rigid tool holding in standard boring bar holders, and the 0.0060-inch corner radius supports controlled surface finishes in ferrous and non-ferrous materials. Machinists and tool room operators running production or job shop work install this bar where repeatable bore geometry is critical.
This boring bar is intended for use on CNC lathes, manual engine lathes, and boring mills where small-diameter internal bores are required. The right-hand cutting direction suits conventional setups. With an overall length of 2.5 inches and a compact 0.2300-inch minimum bore diameter, it fits tight workpiece geometries where larger tooling cannot reach. It is appropriate for both production machining environments and precision tool room applications.
Designed as an OEM-style replacement or direct-use solid carbide boring bar for lathes and boring mills accepting a 5/16-inch shank diameter boring bar holder.
Installation is performed by qualified machinists following standard tool room practices. Ensure the machine spindle is fully stopped and locked out before mounting or removing tooling. Secure the shank firmly in the boring bar holder to the recommended clamping torque specified by the holder manufacturer. Verify tool overhang does not exceed the maximum bore depth of 0.8000 inches to prevent deflection or chatter during cutting.
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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