Suitable for machining a variety of materials including steel, stainless steel, cast iron, copper and aluminium, the R459 from Dormer Pramet has been specifically developed to overcome problems typically associated with deep-hole drilling. Created within the Dormer product portfolio, the R459 broadens the existing MP-X range, which already consists of 3xD and 5xD solid carbide multi-material drills. A key feature of the new drill is its Continuously Thinned Web geometry which increases both flute volume and cross sectional strength.

Ricky Payling, Dormer Pramet's application specialist for rotary tools, explains: "The combination of these elements ensures consistent forces throughout the drilling cycle, with little or no increase in power requirement as the drill penetrates deeper into the hole. This, in turn, allows increased cutting speeds and greater performance reliability without compromising tool life."

A special outer corner design provides added protection against wear and chipping, especially when under extreme conditions, such as cross drilling applications, while a specially designed 140º point angle makes for easier centring and reduces thrust requirements.

The R459 also incorporates a consistent edge preparation which protects against premature chipping and flaking. In addition, internal coolant holes allow for effective cooling of the cutting area and efficient swarf removal, minimising machine downtime. The R459 is available in diameters from 3mm to 16mm, including 0.1mm increments up to 10.0mm, and features a titanium aluminium nitride (TiAlN) coating.

Payling added: "Including an 8xD drilling option to the current MP-X range enhances our customer offer and provides a reliable, versatile and cost-effective solution."