Building on the technology behind the high-performance solid-carbide MP-X 3xD and 5xD drills, the new Dormer R459 coolant-through 8xD drill reportedly reduces machining time for operators by eliminating the pecking process, according to Dormer Pramet, Elgin, Ill.

With fast and efficient chip evacuation, the MP-X 8xD drill is said to reduce the cost per hole and increase overall throughput for users. The microgram carbide material provides a combination of hardness and toughness, resulting in high wear resistance and longer tool life, according to a company news release issued Jan. 7.

With multi-layer Titanium Aluminum Nitride (TiAIN-Top) coating, the Dormer MP-X drill is said to deliver:

• improved stability to the cutting edges,
• outstanding wear protection, and
• high hardness/toughness and oxidation stability.

Ensuring consistent forces throughout the drilling cycle, the CTW™ (Continually Thinned Web) flute geometry optimizes flute volume and breaks the chips into small, manageable pieces to ensure efficient chip evacuation in deep-hole applications. The combination of the split four facet point and the CTW™ flute delivers precise centering and low thrust forces.

Video demonstration shows the Dormer R459 drilling 8xD holes in tool steel (P20/AMG 1.5) at speeds of Vc 80m/min. at 0.14mm/rev.