Cemented Carbide Counterbore Drill Introduction

Cemented carbide counterbore drill generally used for the hole of the semi-finishing or finishing for hinge or grinding before the expansion of the pre-processing or blank hole, a 3-4 edge with no chisel edge, the rake angle and a rear angle along the cutting edge of a small change in the machining guide effect, the axial resistance is small, the cutting conditions than drilling.