Micro 100 BMR-023-2X 0.023in 2-Flute Ball Nose Carbide End Mill

The Micro 100 BMR-023-2X is a new, USA-made solid carbide ball nose end mill from Micro 100's "Super Carbide" line, designed for micro-precision milling of ferrous and non-ferrous materials. Decoding the part number: BMR = Ball nose end Mill, Reduced neck (long-reach/tapered neck geometry); 023 = 0.023 in (0.584 mm) cutter diameter; 2X = 2-flute configuration with a 2× diameter depth-of-cut capability. The tool features a long tapered neck that reduces to the micro cutting diameter, extending reach while maintaining rigidity and minimizing deflection at micro scales — a design particularly suited to die/mold work, precision engraving, and micro-pocket machining in hardened steels, stainless, titanium, and aluminum. The dark PVD-like coating visible in the photo (consistent with Micro 100's standard AlTiN or TiN-series treatment on BMR-series tools) improves heat resistance and lubricity. The straight shank is sized at 1/8 in (3.175 mm), compatible with standard ER11/ER16 collet chucks and micro-tool holders. Overall length is 1.500 in per Micro 100's published catalog dimensions for this series.

Product Specifications