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The MICRO 100 BB-120500 is a solid carbide boring bar designed for internal diameter machining in tight-bore applications. With a minimum bore diameter of 0.1200 inches and a maximum bore depth of 0.5000 inches, it handles small, precise holes where rigidity and tool life are critical. The 3/16-inch shank diameter and 2-inch overall length make it compatible with standard boring bar holders and CNC turning setups. A 0.0060-inch corner radius supports fine surface finish requirements. This bar is intended for use by machinists and tooling professionals working with lathes and CNC turning centers.
This boring bar suits precision internal turning operations in small-bore work, including part features such as bores, counterbores, and internal grooves in metal components. Right-hand cutting direction means it is configured for standard forward-feed lathe operation. The solid carbide construction makes it well suited for interrupted cuts, hard materials, and applications where high wear resistance is required. It is typically used in production machine shops, toolrooms, and job shops.
Designed as an OEM-style replacement or direct-use solid carbide boring bar for lathes and CNC turning centers equipped with toolholders accepting a 3/16-inch shank diameter.
Installation and setup should be performed by a qualified machinist familiar with lathe or CNC turning center tooling. Power down and lock out the machine before mounting or removing tooling. Ensure the boring bar is seated securely in the toolholder to the recommended minimum shank engagement depth to prevent deflection and chatter. Verify cutting direction and tool offset settings in the machine control before taking any cut.
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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