KEUE CNC Black High Coating MNR Small Aperture Internal Hole Rod Micro Boring Cutter Carbide Precision 0.001mm 4-8mm Diameter
This MNR small-bore boring tool is made of high-grade solid tungsten carbide with advanced black high-hardness coating. Its robust tool shank delivers excellent rigidity, effectively suppresses cutting chatter, and ensures stable precision micro inner-hole machining on Swiss-type CNC automatic lathes.
The precision-ground sharp cutting edge effectively minimizes built-up edge during long-time continuous boring operations. The wear-resistant black hard coating delivers excellent heat resistance, achieving fine surface finish and stable dimensional accuracy for steel and stainless steel workpieces.
Specially engineered for tiny aperture internal boring tasks, it fits perfectly in confined inner cavity spaces. It extends tool service life, reduces tool-change downtime, and significantly boosts overall production efficiency for mass manufacturing of miniature precision parts.
