Cutting tool and tooling system specialist Sandvik Coromant is releasing three grades for its CoroDrill 870 exchangeable-tip drill. GC4344, GC3334, and GC2334 have been developed to offer significant tool life improvements and more predictable wear patterns, all while maintaining the high penetration rates and productivity.
The GC4344, GC3334, and GC2334 grades for CoroDrill 870 are produced with Zertivo, a physical vapor deposition (PVD) production technology developed by Sandvik Coromant. Zertivo technology amplifies the benefits of the grades, maintaining the advantageous properties of its predecessors and bringing out significant improvements when it comes to properties such as edge line security, chipping resistance, and overall wear resistance.
Available in various geometries, the grades cover applications in most ISO materials, although they are optimized for ISO P (steel), ISO M (stainless steel) and ISO K (cast iron). All grades are PVD-coated using Zertivo and are designed to deliver specific enhancements related to common wear issues in drilling.
Designed for the intermediate hole-tolerance range of H9-H10, the CoroDrill 870 exchangeable-tip drills can be tailored to best support applications through a selection of diameter, length, step or chamfer possibilities. CoroDrill 870 is available in a diameter range from 10mm to 33mm (0.394" to 1.299") and a depth capacity from 3xD to 12 xD.