In applications ranging to 30×D, solid-carbide Widia-Rubig deep-hole drills are said to remove between three and four times more metal than gun drills. Designed to deliver excellent hole quality and cycle times, the drills are available in length ratios measuring 15, 20, 25 and 30×D and diameters ranging from 3 to 13 mm. Along with increased performance, the solid-carbide deep-hole drills do not require special drivers or guide bushings, which increases process versatility. Unlike gun drills, which are dedicated to gun drilling machines only, the company says its deep-hole drills can be used in machining centers.
With 132-degree, cone-point geometry, the low-thrust drills’ centering ability increases hole quality, the company says. It adds that the drills’ four-margin design improves stability in the cut. Additionally, the drills feature an advanced PVD coating and highly polished surfaces to increase wear resistance and tool life and reduce friction on margins and cutting edges.