Dormer Offers Replaceable-Head Drilling Solution Dormer Tools has added a replaceable-head drilling solution to its programme of solid-carbide tooling. Offering high productivity across a range of materials, the range - branded Hydra - represents a cost-effective alternative to solid-carbide drills. Two head types are available. The Hydra-M (R960) has been developed to give optimum performance in stainless steel and cast iron, but is also recommended for drilling operations in titanium and nickel. The Hydra-P (R950), meanwhile, is suitable for machining carbon and alloy steels. All drilling heads are manufactured from micrograin carbide and feature a titanium aluminum nitride-based coating for high toughness and oxidation stability, enabling high speeds and feeds while resisting built-up edge. The self-centring 140-degree four-facet split point means that required thrust forces are low, while the need for pre-drilling is eliminated entirely. Heads are held in place by two screws;...
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