Sandvik's new drill.
Sandvik's new drill.

The CoroDrill 870 is part of a new generation of exchangeable-tip drills and can be tailored to improve applications through diameter range, steps and length possibilities. Holes can be made more efficiently and closer to the specifications required, leaving them better suited to subsequent operations. A highly secure interface between drill body and tip ensures reliability and precision, while the quick and easy tip change procedure maximizes active machining time. 

The new cutting edge geometries and grades provide a safe cutting process, allowing for increased penetration rates while maintaining chip control and increasing tool life. Grade GC2234 includes a fine-grained, high-chromium substrate and a new PVD coating with optimized composition for ISO M drilling (stainless). The thin AlTiN PVD coating includes enhanced adhesion steps resulting in longer tool life and increased chipping resistance.
 
Sandvik's drill is available in diameter range 10.00–26.65 mm (0.394–1.049 inch) and lengths up to 8 × drill diameter as standard. Each drill body has an interface size with matching tips to achieve hole tolerances of H9–H10.